FN Thomson Reuters Web of Science™ VR 1.0 PT J AU Steele, A McCubbin, FM Fries, M Kater, L Boctor, NZ Fogel, ML Conrad, PG Glamoclija, M Spencer, M Morrow, AL Hammond, MR Zare, RN Vicenzi, EP Siljestrom, S Bowden, R Herd, CDK Mysen, BO Shirey, SB Amundsen, HEF Treiman, AH Bullock, ES Jull, AJT AF Steele, A. McCubbin, F. M. Fries, M. Kater, L. Boctor, N. Z. Fogel, M. L. Conrad, P. G. Glamoclija, M. Spencer, M. Morrow, A. L. Hammond, M. R. Zare, R. N. Vicenzi, E. P. Siljestrom, S. Bowden, R. Herd, C. D. K. Mysen, B. O. Shirey, S. B. Amundsen, H. E. F. Treiman, A. H. Bullock, E. S. Jull, A. J. T. TI A Reduced Organic Carbon Component in Martian Basalts SO SCIENCE LA English DT Article ID ALLAN HILLS 84001; POLYCYCLIC AROMATIC-HYDROCARBONS; METEORITE ALH84001; ISOTOPIC EVIDENCE; OXYGEN FUGACITY; MARS; ORIGIN; MANTLE; GRAPHITE; IMPACT AB The source and nature of carbon on Mars have been a subject of intense speculation. We report the results of confocal Raman imaging spectroscopy on 11 martian meteorites, spanning about 4.2 billion years of martian history. Ten of the meteorites contain abiotic macromolecular carbon (MMC) phases detected in association with small oxide grains included within high-temperature minerals. Polycyclic aromatic hydrocarbons were detected along with MMC phases in Dar al Gani 476. The association of organic carbon within magmatic minerals indicates that martian magmas favored precipitation of reduced carbon species during crystallization. The ubiquitous distribution of abiotic organic carbon in martian igneous rocks is important for understanding the martian carbon cycle and has implications for future missions to detect possible past martian life. C1 [Steele, A.; McCubbin, F. M.; Boctor, N. Z.; Fogel, M. L.; Glamoclija, M.; Bowden, R.; Mysen, B. O.] Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA. [McCubbin, F. M.] Univ New Mexico, Inst Meteorit, Dept Earth & Planetary Sci, Albuquerque, NM 87131 USA. [Fries, M.] Planetary Sci Inst, Tucson, AZ 85719 USA. [Kater, L.] Witec GmbH, D-89081 Ulm, Germany. [Conrad, P. G.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Spencer, M.; Morrow, A. L.; Hammond, M. R.; Zare, R. N.] Stanford Univ, Dept Chem, Stanford, CA 94305 USA. [Vicenzi, E. P.] Smithsonian Inst, Museum Conservat Inst, Suitland, MD 20746 USA. [Siljestrom, S.] Stockholm Univ, Dept Geol Sci, S-10691 Stockholm, Sweden. [Siljestrom, S.] SP Tech Res Inst Sweden, Dept Chem & Mat, S-50115 Boras, Sweden. [Herd, C. D. K.] Univ Alberta, Dept Earth & Atmospher Sci, Edmonton, AB T6G 2E3, Canada. [Shirey, S. B.] Carnegie Inst Sci, Dept Terr Magnetism, Washington, DC 20015 USA. [Amundsen, H. E. F.] Earth Explorat Serv, N-0364 Oslo, Norway. [Amundsen, H. E. F.] Planetary Explorat Serv, N-0364 Oslo, Norway. [Treiman, A. H.] Lunar & Planetary Inst, Houston, TX 77058 USA. [Bullock, E. S.] Smithsonian Inst, Dept Mineral Sci, Washington, DC 20013 USA. [Jull, A. J. T.] Univ Arizona, Tucson, AZ 85721 USA. RP Steele, A (reprint author), Carnegie Inst Sci, Geophys Lab, 5251 Broad Branch Rd NW, Washington, DC 20015 USA. EM asteele@ciw.edu RI Steele, Andrew/A-3573-2013; McCubbin, Francis/D-1698-2009; Fogel, Marilyn/M-2395-2015 OI Fogel, Marilyn/0000-0002-1176-3818 FU NASA Astrobiology Science and Technology for Exploring Planets [NNX09AB74G]; NASA Mars Fundamental Research Program [NNX08AN61G]; W. M. Keck Foundation [2007-6-29]; NASA Astrobiology Institute [NNA09DA81A]; Carnegie Institution of Washington; NASA Cosmochemistry [NNX11AG76G]; Natural Science and Engineering Research Council of Canada [261740] FX This work was funded by NASA Astrobiology Science and Technology for Exploring Planets (NNX09AB74G to A. S., P. G. C., A. H. T., and M. L. F.), NASA Mars Fundamental Research Program (NNX08AN61G to A. S.), the W. M. Keck Foundation (2007-6-29 to M. L. F. and A. S.), NASA Astrobiology Institute (NNA09DA81A to A. S., S. B. S., N.Z.B., B.O.M., and M. L. F.), and the Carnegie Institution of Washington. F. M. M. acknowledges financial support from NASA Cosmochemistry (NNX11AG76G to F. M. M.). A. S. thanks J. Strope for identification of suitable meteorite samples, C. Agee (University of New Mexico) for the Tissint sample, and L. Welzenbach, T. Gooding, and T. Rose for their assistance in thin-sectioning the meteorites and the use of the Scanning Electron Microscope in the Department of Mineral Sciences, National Museum of Natural History, Smithsonian Institution, Washington, DC. C. D. K. H. thanks D. Hnatyshin for assistance with oxygen fugacity calculations. This work was supported by Natural Science and Engineering Research Council of Canada grant 261740 "The Geology of Mars from Studies of Martian Meteorites" to C. D. K. H. L2MS, 14C, and additional Raman data have been included in the supplementary materials. NR 38 TC 74 Z9 77 U1 6 U2 107 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD JUL 13 PY 2012 VL 337 IS 6091 BP 212 EP 215 DI 10.1126/science.1220715 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 973AN UT WOS:000306323500053 PM 22628557 ER PT J AU Koskelo, AI Fisher, TR Utz, RM Jordan, TE AF Koskelo, Antti I. Fisher, Thomas R. Utz, Ryan M. Jordan, Thomas E. TI A new precipitation-based method of baseflow separation and event identification for small watersheds (< 50 km(2)) SO JOURNAL OF HYDROLOGY LA English DT Article DE Baseflow separation; Precipitation; Quickflow; Hydrochemical; UKIH; Hydrograph ID CHOPTANK RIVER-BASIN; RECESSION ANALYSIS; CHESAPEAKE BAY; STREAMFLOW; HYDROCHEMISTRY; CATCHMENT; FOREST AB Baseflow separation methods are often impractical, require expensive materials and time-consuming methods, and/or are not designed for individual events in small watersheds. To provide a simple baseflow separation method for small watersheds, we describe a new precipitation-based technique known as the Sliding Average with Rain Record (SARR). The SARR uses rainfall data to justify each separation of the hydrograph. SARR has several advantages such as: it shows better consistency with the precipitation and discharge records, it is easier and more practical to implement, and it includes a method of event identification based on precipitation and quickflow response. SARR was derived from the United Kingdom Institute of Hydrology (UKIH) method with several key modifications to adapt it for small watersheds (<50 km(2)). We tested SARR on watersheds in the Choptank Basin on the Delmarva Peninsula (US Mid-Atlantic region) and compared the results with the UKIH method at the annual scale and the hydrochemical method at the individual event scale. Annually, SARR calculated a baseflow index that was similar to 10% higher than the UKIH method due to the finer time step of SARR (1 d) compared to UKIH (5 d). At the watershed scale, hydric soils were an important driver of the annual baseflow index likely due to increased groundwater retention in hydric areas. At the event scale, SARR calculated less baseflow than the hydrochemical method, again because of the differences in time step (hourly for hydrochemical) and different definitions of baseflow. Both SARR and hydrochemical baseflow increased with event size, suggesting that baseflow contributions are more important during larger storms. To make SARR easy to implement, we have written a MatLab program to automate the calculations which requires only daily rainfall and daily flow data as inputs. (c) 2012 Elsevier B.V. All rights reserved. C1 [Koskelo, Antti I.; Fisher, Thomas R.] Univ Maryland, Ctr Environm Sci, Horn Point Lab, Cambridge, MD 21613 USA. [Utz, Ryan M.] Univ Maryland, Ctr Environm Sci, Appalachian Lab, Frostburg, MD 21532 USA. [Jordan, Thomas E.] Smithsonian Environm Res Ctr, Edgewater, MD 21037 USA. RP Koskelo, AI (reprint author), EA Engn Sci & Technol Inc, 15 Loveton Circle, Sparks, MD 21152 USA. EM akoskelo@hpl.umces.edu; fisher@umces.edu; rutz@al.umces.edu; jordanth@si.edu FU USDA CSREES Program; USDA CEAP Program; NSF Ecosystem Studies Program FX This research was supported by the USDA CSREES Program, USDA CEAP Program, and NSF Ecosystem Studies Program. We acknowledge the field assistance of Dave Whitall (NOAA), Peter Downey (USDA), Anne Gustafson (HPL UMCES), and Rebecca Fox (HPL UMCES). Keith Eshleman (AL UMCES) provided helpful comments on an earlier draft of this manuscript. NR 33 TC 6 Z9 7 U1 2 U2 40 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-1694 J9 J HYDROL JI J. Hydrol. PD JUL 11 PY 2012 VL 450 BP 267 EP 278 DI 10.1016/j.jhydrol.2012.04.055 PG 12 WC Engineering, Civil; Geosciences, Multidisciplinary; Water Resources SC Engineering; Geology; Water Resources GA 973GU UT WOS:000306349000026 ER PT J AU Dohrmann, M Gocke, C Reed, J Janussen, D AF Dohrmann, Martin Goecke, Christian Reed, John Janussen, Dorte TI Integrative taxonomy justifies a new genus, Nodastrella gen. nov., for North Atlantic "Rossella" species (Porifera: Hexactinellida: Rossellidae) SO ZOOTAXA LA English DT Article DE Asconema; cold-water coral reefs; glass sponges; molecular systematics; new genus; North Atlantic Ocean; Rossella nodastrella ID GLASS SPONGES PORIFERA; PHYLOGENY; EVOLUTION; BOOTSTRAP; SYSTEMATICS; CONFIDENCE; MODELS; RATES AB Molecular systematic studies have indicated that the hexactinellid sponge species Rossella nodastrella Topsent (Lyssacinosida, Rossellidae), previously only known from the NE Atlantic, is only distantly related to its congeners, which are restricted to the Southern Ocean, representing the only case thus far reported of a diphyletic genus in the class Hexactinellida. Here we describe new material of "Rossella" nodastrella from cold-water coral reefs in the NW Atlantic (Florida). Morphological comparison with the holotype from the Azores and specimens recently reported from off Ireland reveal at least two distinct species, which we corroborate with molecular data. Because the diphyletic nature of "Rossella" is further supported with inclusion of the new specimens in the molecular phylogeny, we erect a new genus, Nodastrella gen. nov., for these two species. The Irish specimens are synonymized with our new species Nodastrella asconemaoida sp. nov. Subtle morphological and molecular differences between the E and W Atlantic specimens are for the time being ascribed to intraspecific geographic variation, but indicate that Nodastrella might contain more (sub) species, pending investigation of additional specimens, especially from intermediate locations. C1 [Dohrmann, Martin] Smithsonian Inst, Natl Museum Nat Hist, Dept Invertebrate Zool, Washington, DC 20013 USA. [Goecke, Christian; Janussen, Dorte] Forsch Inst, D-60325 Frankfurt, Germany. [Goecke, Christian; Janussen, Dorte] Nat Museum Senckenberg, D-60325 Frankfurt, Germany. [Reed, John] Florida Atlantic Univ, Oceanog Inst, Harbor Branch, Ft Pierce, FL 34946 USA. RP Dohrmann, M (reprint author), Feldbergstr 6, D-55118 Mainz, Germany. EM mdohrma@gmail.com; Dorte.Janussen@senckenberg.de; Jreed12@hboi.fau.edu; Christian.Goecke@senckenberg.de FU DFG [JA 1063/14-2]; SYNTHESYS project [GB-TAF-885]; European Community; Postdoctoral Fellowship of the Smithsonian Institution; NSF Porifera Tree of Life project FX We thank R. van Soest for important discussions and for providing us with a specimen identified by him as R. nodastrella from Rockall Bank, Ireland, and K. R. Tabachnick for important discussions on the taxonomy of Rossella. Technicians H. Szmutka and T. Bollinger are thanked for skeletal measurements and SEM documentation. We further thank Lauren van Thiel for preparing the initial spicule slides of USNM 1150045 and USNM 1150046, K. Haen for providing the sample of HBOI 5-VIII-05-1-004 to MD, S. Pomponi for Fig. 4, S. Vargas for providing DJ and CG with a sample of the A. mitsukurii specimen used in Dohrmann et al. (2008, 2012), and O. Voigt for suggestions on bleach protocols. Gert Worheide is acknowledged for providing access to computational resources at the Molecular Geo- & Palaeobiology Lab at LMU Munich. DJ thanks the DFG for financing projects of the study on Antarctic sponges (JA 1063/14-2), and for getting access to the Rossella types in the NHM London, supported by SYNTHESYS project GB-TAF-885 (financed by European Community Research Infrastructure Action under the FP7 Integrating Activities Programme). MD was supported by a Postdoctoral Fellowship of the Smithsonian Institution and further acknowledges Allen G. Collins for providing additional funding through the NSF Porifera Tree of Life project (www.portol.org). Allen G. Collins and 2 anonymous reviewers are thanked for helpful comments on earlier versions of this manuscript. NR 30 TC 12 Z9 12 U1 2 U2 9 PU MAGNOLIA PRESS PI AUCKLAND PA PO BOX 41383, AUCKLAND, ST LUKES 1030, NEW ZEALAND SN 1175-5326 EI 1175-5334 J9 ZOOTAXA JI Zootaxa PD JUL 10 PY 2012 IS 3383 BP 1 EP 13 PG 13 WC Zoology SC Zoology GA 970XQ UT WOS:000306166000001 ER PT J AU Bogdan, A Forman, WR Zhuravleva, I Mihos, JC Kraft, RP Harding, P Guo, Q Li, ZY Churazov, E Vikhlinin, A Nulsen, PEJ Schindler, S Jones, C AF Bogdan, Akos Forman, William R. Zhuravleva, Irina Mihos, J. Christopher Kraft, Ralph P. Harding, Paul Guo, Qi Li, Zhiyuan Churazov, Eugene Vikhlinin, Alexey Nulsen, Paul E. J. Schindler, Sabine Jones, Christine TI EXPLORING THE UNUSUALLY HIGH BLACK-HOLE-TO-BULGE MASS RATIOS IN NGC 4342 AND NGC 4291: THE ASYNCHRONOUS GROWTH OF BULGES AND BLACK HOLES SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: bulges; galaxies: elliptical and lenticular, cD; galaxies: evolution; galaxies: individual (NGC 4291, NGC 4342); X-rays: galaxies; X-rays: ISM ID EARLY-TYPE GALAXIES; DARK-MATTER HALOES; ACTIVE GALACTIC NUCLEI; DIGITAL SKY SURVEY; HOST GALAXIES; VIRGO-CLUSTER; FUNDAMENTAL RELATION; SCALING RELATIONS; STELLAR MASS; LIGHT AB We study two nearby early-type galaxies, NGC 4342 and NGC 4291, that host unusually massive black holes relative to their low stellar mass. The observed black-hole-to-bulge mass ratios of NGC 4342 and NGC 4291 are 6.9(-2.3)(+3.8)% and 1.9% +/- 0.6%, respectively, which significantly exceed the typical observed ratio of similar to 0.2%. As a consequence of the exceedingly large black-hole-to-bulge mass ratios, NGC 4342 and NGC 4291 are approximate to 5.1 sigma and approximate to 3.4 sigma outliers from the M-center dot-M-bulge scaling relation, respectively. In this paper, we explore the origin of the unusually high black-hole-to-bulge mass ratio. Based on Chandra X-ray observations of the hot gas content of NGC 4342 and NGC 4291, we compute gravitating mass profiles, and conclude that both galaxies reside in massive dark matter halos, which extend well beyond the stellar light. The presence of dark matter halos around NGC 4342 and NGC 4291 and a deep optical image of the environment of NGC 4342 indicate that tidal stripping, in which greater than or similar to 90% of the stellar mass was lost, cannot explain the observed high black-hole-to-bulge mass ratios. Therefore, we conclude that these galaxies formed with low stellar masses, implying that the bulge and black hole did not grow in tandem. We also find that the black hole mass correlates well with the properties of the dark matter halo, suggesting that dark matter halos may play a major role in regulating the growth of the supermassive black holes. C1 [Bogdan, Akos; Forman, William R.; Kraft, Ralph P.; Li, Zhiyuan; Vikhlinin, Alexey; Nulsen, Paul E. J.; Jones, Christine] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. [Zhuravleva, Irina; Churazov, Eugene] Max Planck Inst Astrophys, D-85741 Garching, Germany. [Mihos, J. Christopher; Harding, Paul] Case Western Reserve Univ, Dept Astron, Cleveland, OH 44106 USA. [Guo, Qi] Chinese Acad Sci, Partner Grp, Max Planck Inst Astrophys, Natl Astron Observ, Beijing 100012, Peoples R China. [Guo, Qi] Univ Durham, Dept Phys, Inst Computat Cosmol, Durham DH1 3LE, England. [Schindler, Sabine] Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria. RP Bogdan, A (reprint author), Smithsonian Astrophys Observ, 60 Garden St, Cambridge, MA 02138 USA. EM abogdan@cfa.harvard.edu RI Churazov, Eugene/A-7783-2013; OI Mihos, Chris/0000-0002-7089-8616; Nulsen, Paul/0000-0003-0297-4493 FU National Aeronautics and Space Administration [NAS8-03060]; National Science Foundation [AST-0607526, AST-0707793, AST-1108964]; NASA through Chandra X-ray Center [PF1-120081]; Smithsonian Institution; National basic research program of China (973 program) [2009CB24901]; CAS; NSFC [11143005]; Max Planck Society FX We thank the anonymous referee for constructive comments. A.B. and W. R. F. are grateful to Debora Sijacki, Mark Vogelsberger, Frank van den Bosch, Kevin Schawinski, and Charlie Conroy for helpful discussions and to Hans Bohringer for his valuable contribution to the Chandra proposal. This research has made use of Chandra data provided by the Chandra X-ray Center. The publication makes use of software provided by the Chandra X-ray Center (CXC) in the application package CIAO. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. A.B. acknowledges support provided by NASA through Einstein Postdoctoral Fellowship grant number PF1-120081 awarded by the Chandra X-ray Center, which is operated by the Smithsonian Astrophysical Observatory for NASA under contract NAS8-03060. W. F. and C.J. acknowledge support from the Smithsonian Institution. G. Q. acknowledges support from the National basic research program of China (973 program under Grant No. 2009CB24901), the Young Researcher Grant of National Astronomical Observatories, CAS, the NSFC grants program (No. 11143005), and the Partner Group program of the Max Planck Society. J.C.M. appreciates support from the NSF through grants AST-0607526, AST-0707793, and AST-1108964. NR 64 TC 19 Z9 19 U1 1 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 2012 VL 753 IS 2 AR 140 DI 10.1088/0004-637X/753/2/140 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 967MR UT WOS:000305912700047 ER PT J AU Bowler, BP Liu, MC Shkolnik, EL Dupuy, TJ Cieza, LA Kraus, AL Tamura, M AF Bowler, Brendan P. Liu, Michael C. Shkolnik, Evgenya L. Dupuy, Trent J. Cieza, Lucas A. Kraus, Adam L. Tamura, Motohide TI PLANETS AROUND LOW-MASS STARS (PALMS). I. A SUBSTELLAR COMPANION TO THE YOUNG M DWARF 1RXS J235133.3+312720 SO ASTROPHYSICAL JOURNAL LA English DT Article DE brown dwarfs; stars: individual (1RXS J235133.3+312720); stars: low-mass ID ALL-SKY SURVEY; EXTRASOLAR GIANT PLANETS; PICTORIS MOVING GROUP; SOLAR-TYPE STARS; X-RAY-EMISSION; AB-DORADUS-C; ACTIVITY-ROTATION RELATIONSHIP; ANGULAR-MOMENTUM EVOLUTION; COLOR-MAGNITUDE DIAGRAMS; TW-HYDRAE ASSOCIATION AB We report the discovery of a brown dwarf companion to the young M dwarf 1RXS J235133.3+312720 as part of a high contrast imaging search for planets around nearby young low-mass stars with Keck-II/NIRC2 and Subaru/HiCIAO. The 2 ''.4 (similar to 120AU) pair is confirmed to be comoving from two epochs of high-resolution imaging. Follow-up low- and moderate-resolution near-infrared spectroscopy of 1RXS J2351+3127 B with IRTF/SpeX and Keck-II/OSIRIS reveals a spectral type of L0(-1)(+2). The M2 primary star 1RXS J2351+3127 A exhibits X-ray and UV activity levels comparable to young moving group members with ages of similar to 10-100 Myr. UVW kinematics based the measured radial velocity of the primary and the system's photometric distance (50 +/- 10 pc) indicate it is likely a member of the similar to 50-150 Myr AB Dor moving group. The near-infrared spectrum of 1RXS J2351+3127 B does not exhibit obvious signs of youth, but its H-band morphology shows subtle hints of intermediate surface gravity. The spectrum is also an excellent match to the similar to 200 MyrM9 brown dwarf LP 944-20. Assuming an age of 50-150 Myr, evolutionary models imply a mass of 32 +/- 6 M-Jup for the companion, making 1RXS J2351+3127 B the second lowest-mass member of the AB Dor moving group after the L4 companion CD-35 2722 B and one of the few benchmark brown dwarfs known at young ages. C1 [Bowler, Brendan P.; Liu, Michael C.; Cieza, Lucas A.; Kraus, Adam L.] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA. [Shkolnik, Evgenya L.] Lowell Observ, Flagstaff, AZ 86001 USA. [Dupuy, Trent J.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Tamura, Motohide] Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan. RP Bowler, BP (reprint author), Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA. EM bpbowler@ifa.hawaii.edu FU NASA [NNX11AC31G, NAS 5-26555]; NSF [AST09-09222]; NASA through STScI [51257.01]; MEXT; W. M. Keck Foundation FX We thank the referee for helpful comments, Joshua Schlieder for early access to his kinematic analysis of 1RXS J2351+3127 A, Katelyn Allers for helpful discussions about young brown dwarfs, Eric Nielsen for the background track predictions, and Carolin Liefke for providing us with the NEXXUS 2 catalog. It is a pleasure to thank the support astronomers and telescope operators at Keck and IRTF who helped make this work possible: Marc Kassis, Heather Hershley, Jim Lyke, Hien Tran, and John Rayner. B. P. B. and M. C. L. have been supported by NASA grant NNX11AC31G and NSF grant AST09-09222. T.J.D. A. L. K. have been supported by NASA through Hubble Fellowship grants 51257.01 and 51257.01 awarded by STScI, which is operated by AURA, Inc., for NASA under contract NAS 5-26555. M. T. is supported by Grant-In-Aid for Science Research in a Priority Area from MEXT. We utilized data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. NASA's Astrophysics Data System Bibliographic Services together with the VizieR catalogue access tool and SIMBAD database operated at CDS, Strasbourg, France, were invaluable resources for this work. Finally, mahalo nui loa to the kama'aina of Hawai'i for their support of Keck and the Mauna Kea observatories. We are grateful to conduct observations from this mountain.; Some of the data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. NR 143 TC 34 Z9 34 U1 1 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 2012 VL 753 IS 2 AR 142 DI 10.1088/0004-637X/753/2/142 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 967MR UT WOS:000305912700049 ER PT J AU Brodwin, M Gonzalez, AH Stanford, SA Plagge, T Marrone, DP Carlstrom, JE Dey, A Eisenhardt, PR Fedeli, C Gettings, D Jannuzi, BT Joy, M Leitch, EM Mancone, C Snyder, GF Stern, D Zeimann, G AF Brodwin, M. Gonzalez, A. H. Stanford, S. A. Plagge, T. Marrone, D. P. Carlstrom, J. E. Dey, A. Eisenhardt, P. R. Fedeli, C. Gettings, D. Jannuzi, B. T. Joy, M. Leitch, E. M. Mancone, C. Snyder, G. F. Stern, D. Zeimann, G. TI IDCS J1426.5+3508: SUNYAEV-ZEL'DOVICH MEASUREMENT OF A MASSIVE INFRARED-SELECTED CLUSTER AT z=1.75 SO ASTROPHYSICAL JOURNAL LA English DT Article DE cosmic background radiation; cosmology: observations; galaxies: clusters: individual (IDCS J1426.5+3508); galaxies: clusters: intracluster medium; galaxies: evolution ID SOUTH-POLE TELESCOPE; LUMINOUS GALAXY CLUSTER; IRAC SHALLOW SURVEY; WIDE-FIELD SURVEY; GREATER-THAN 1; COSMOLOGY; SAMPLE; EVOLUTION; DISCOVERY; ARRAY AB We report 31 GHz CARMA observations of IDCS J1426.5+3508, an infrared-selected galaxy cluster at z = 1.75. A Sunyaev-Zel'dovich (SZ) decrement is detected toward this cluster, indicating a total mass of M-200,M-m = (4.3 +/- 1.1) x 10(14) M-circle dot in agreement with the approximate X-ray mass of similar to 5 x 10(14) M-circle dot. IDCS J1426.5+3508 is by far the most distant cluster yet detected via the SZ effect, and the most massive z >= 1.4 galaxy cluster found to date. Despite the mere similar to 1% probability of finding it in the 8.82 deg(2) IRAC Distant Cluster Survey, IDCS J1426.5+3508 is not completely unexpected in Lambda CDM once the area of large, existing surveys is considered. IDCS J1426.5+3508 is, however, among the rarest, most extreme clusters ever discovered and indeed is an evolutionary precursor to the most massive known clusters at all redshifts. We discuss how imminent, highly sensitive SZ experiments will complement infrared techniques for statistical studies of the formation of the most massive galaxy clusters in the z > 1.5 universe, including potential precursors to IDCS J1426.5+3508. C1 [Brodwin, M.] Univ Missouri, Dept Phys & Astron, Kansas City, MO 64110 USA. [Brodwin, M.; Snyder, G. F.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA USA. [Gonzalez, A. H.; Fedeli, C.; Gettings, D.; Mancone, C.] Univ Florida, Dept Astron, Gainesville, FL 32611 USA. [Stanford, S. A.; Zeimann, G.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. [Stanford, S. A.] Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA. [Plagge, T.; Carlstrom, J. E.; Leitch, E. M.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA. [Plagge, T.; Carlstrom, J. E.; Leitch, E. M.] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA. [Marrone, D. P.] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. [Carlstrom, J. E.] Univ Chicago, Enrico Fermi Inst, Dept Phys, Chicago, IL 60637 USA. [Dey, A.; Jannuzi, B. T.] Natl Opt Astron Observ, Tucson, AZ 85719 USA. [Eisenhardt, P. R.; Stern, D.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Joy, M.] NASA, Dept Space Sci, George C Marshall Space Flight Ctr, Huntsville, AL 35812 USA. RP Brodwin, M (reprint author), Univ Missouri, Dept Phys & Astron, 5110 Rockhill Rd, Kansas City, MO 64110 USA. OI Marrone, Daniel/0000-0002-2367-1080 FU National Science Foundation [AST-0838187, PHY-0114422]; CARMA; NASA; NASA by JPL/Caltech; Smithsonian Astrophysical Observatory; NASA [G09-0150A, NAS 5-26555]; NASA through Space Telescope Science Institute [11663, 12203]; W. M. Keck Foundation; U.S. Department of Energy [W-7405-ENG-48]; CARMA construction; [SV4-74018, A31] FX Support for CARMA construction was derived from the states of California, Illinois, and Maryland, the James S. McDonnell Foundation, the Gordon and Betty Moore Foundation, the Kenneth T. and Eileen L. Norris Foundation, the University of Chicago, the Associates of the California Institute of Technology, and the National Science Foundation. Ongoing CARMA development and operations are supported by the National Science Foundation under a cooperative agreement, and by the CARMA partner universities. The work at Chicago is supported by NSF grants AST-0838187 and PHY-0114422.; This work is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Support for this work was provided by NASA through an award issued by JPL/Caltech. This work is based in part on observations obtained with the Chandra X-Ray Observatory (Chandra), under contract SV4-74018, A31 with the Smithsonian Astrophysical Observatory, which operates Chandra for NASA. Support for this research was provided by the NASA grant G09-0150A. Support for HST programs 11663 and 12203 were provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under the NASA contract NAS 5-26555. This work is based in part on data obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. This work makes use of image data from the NOAO DeepWide-Field Survey (NDWFS) as distributed by the NOAO Science Archive. NOAO is operated by the Association of Universities for Research in Astronomy (AURA), Inc., under a cooperative agreement with the National Science Foundation.; We thank the anonymous referee for suggestions that improved the manuscript, Bradford Benson for helpful discussions, F. Will High and Keith Vanderlinde for providing published SPT masses in a digital form, Matt Ashby for creating the IRAC catalogs for SDWFS, Michael Brown for combining the NDWFS with SDWFS catalogs, Alexey Vikhlinin for advice on the analysis of the Chandra data, and Daniel Holz for providing his predictions in an electronic format. This paper would not have been possible without the efforts of the support staffs of CARMA, the Keck Observatory, the Spitzer Space Telescope, the Hubble Space Telescope, and the Chandra X-Ray Observatory. Support for M.B. was provided by the W. M. Keck Foundation. A.H.G. acknowledges support from the National Science Foundation performed under the auspices of the U.S. Department of Energy under Contract No. W-7405-ENG-48. NR 59 TC 39 Z9 39 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 2012 VL 753 IS 2 AR 162 DI 10.1088/0004-637X/753/2/162 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 967MR UT WOS:000305912700069 ER PT J AU Drout, MR Soderberg, AM Gal-Yam, A Cenko, SB Fox, DB Leonard, DC Sand, DJ Moon, DS Arcavi, I Green, Y AF Drout, Maria R. Soderberg, Alicia M. Gal-Yam, Avishay Cenko, S. Bradley Fox, Derek B. Leonard, Douglas C. Sand, David J. Moon, Dae-Sik Arcavi, Iair Green, Yoav TI THE FIRST SYSTEMATIC STUDY OF TYPE Ibc SUPERNOVA MULTI-BAND LIGHT CURVES (vol 741, pg 97, 2011) SO ASTROPHYSICAL JOURNAL LA English DT Correction C1 [Drout, Maria R.; Soderberg, Alicia M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Drout, Maria R.] Univ Cambridge Churchhill Coll, Cambridge CB3 0DS, England. [Gal-Yam, Avishay; Arcavi, Iair; Green, Yoav] Weizmann Inst Sci, Fac Phys, Benoziyo Ctr Astrophys, IL-76100 Rehovot, Israel. [Cenko, S. Bradley] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Fox, Derek B.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA. [Leonard, Douglas C.] San Diego State Univ, Dept Astron, San Diego, CA 92182 USA. [Sand, David J.] Las Cumbres Observ Global Telescope Network, Santa Barbara, CA 93117 USA. [Sand, David J.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. [Moon, Dae-Sik] Univ Toronto, Dept Astron & Astrophys, Toronto, ON M5S 3H4, Canada. RP Drout, MR (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St,MS-51, Cambridge, MA 02138 USA. RI Green, Yoav/L-5874-2015 OI Green, Yoav/0000-0002-0809-6575 NR 1 TC 1 Z9 1 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 2012 VL 753 IS 2 AR 180 DI 10.1088/0004-637X/753/2/180 PG 1 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 967MR UT WOS:000305912700087 ER PT J AU Fu, H Jullo, E Cooray, A Bussmann, RS Ivison, RJ Perez-Fournon, I Djorgovski, SG Scoville, N Yan, L Riechers, DA Aguirre, J Auld, R Baes, M Baker, AJ Bradford, M Cava, A Clements, DL Dannerbauer, H Dariush, A De Zotti, G Dole, H Dunne, L Dye, S Eales, S Frayer, D Gavazzi, R Gurwell, M Harris, AI Herranz, D Hopwood, R Hoyos, C Ibar, E Jarvis, MJ Kim, S Leeuw, L Lupu, R Maddox, S Martinez-Navajas, P Michalowski, MJ Negrello, M Omont, A Rosenman, M Scott, D Serjeant, S Smail, I Swinbank, AM Valiante, E Verma, A Vieira, J Wardlow, JL van der Werf, P AF Fu, Hai Jullo, E. Cooray, A. Bussmann, R. S. Ivison, R. J. Perez-Fournon, I. Djorgovski, S. G. Scoville, N. Yan, L. Riechers, D. A. Aguirre, J. Auld, R. Baes, M. Baker, A. J. Bradford, M. Cava, A. Clements, D. L. Dannerbauer, H. Dariush, A. De Zotti, G. Dole, H. Dunne, L. Dye, S. Eales, S. Frayer, D. Gavazzi, R. Gurwell, M. Harris, A. I. Herranz, D. Hopwood, R. Hoyos, C. Ibar, E. Jarvis, M. J. Kim, S. Leeuw, L. Lupu, R. Maddox, S. Martinez-Navajas, P. Michalowski, M. J. Negrello, M. Omont, A. Rosenman, M. Scott, D. Serjeant, S. Smail, I. Swinbank, A. M. Valiante, E. Verma, A. Vieira, J. Wardlow, J. L. van der Werf, P. TI A COMPREHENSIVE VIEW OF A STRONGLY LENSED PLANCK-ASSOCIATED SUBMILLIMETER GALAXY SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: formation; galaxies: individual (HATLAS J114637.9-001132); galaxies: interactions ID SCIENCE DEMONSTRATION PHASE; STAR-FORMATION LAW; DIGITAL SKY SURVEY; HERSCHEL-ATLAS; MOLECULAR GAS; HIGH-REDSHIFT; EXTRAGALACTIC SOURCES; INTERSTELLAR-MEDIUM; CONVERSION FACTOR; MAJOR MERGERS AB We present high-resolution maps of stars, dust, and molecular gas in a strongly lensed submillimeter galaxy (SMG) at z = 3.259. HATLAS J114637.9-001132 is selected from the Herschel-Astrophysical Terahertz Large Area Survey (H-ATLAS) as a strong lens candidate mainly based on its unusually high 500 mu m flux density (similar to 300 mJy). It is the only high-redshift Planck detection in the 130 deg(2) H-ATLAS Phase-I area. Keck Adaptive Optics images reveal a quadruply imaged galaxy in the K band while the Submillimeter Array and the Jansky Very Large Array show doubly imaged 880 mu m and CO(1 -> 0) sources, indicating differentiated distributions of the various components in the galaxy. In the source plane, the stars reside in three major kpc-scale clumps extended over similar to 1.6 kpc, the dust in a compact (similar to 1 kpc) region similar to 3 kpc north of the stars, and the cold molecular gas in an extended (similar to 7 kpc) disk similar to 5 kpc northeast of the stars. The emissions from the stars, dust, and gas are magnified by similar to 17, similar to 8, and similar to 7 times, respectively, by four lensing galaxies at z similar to 1. Intrinsically, the lensed galaxy is a warm (T-dust similar to 40-65 K), hyperluminous (L-IR similar to 1.7 x 10(13) L-circle dot; star formation rate (SFR) similar to 2000 M-circle dot similar to yr(-1)), gas-rich (M-gas/M-baryon similar to 70%), young (M-stellar/SFR similar to 20 Myr), and short-lived (M-gas/SFR similar to 40 Myr) starburst. With physical properties similar to unlensed z > 2 SMGs, HATLAS J114637.9-001132 offers a detailed view of a typical SMG through a powerful cosmic microscope. C1 [Fu, Hai; Cooray, A.; Kim, S.; Wardlow, J. L.] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. [Jullo, E.] Observ Astrophys Marseille Provence, F-13388 Marseille, France. [Bussmann, R. S.; Gurwell, M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Ivison, R. J.; Ibar, E.] Royal Observ, UK Astron Technol Ctr, Edinburgh EH9 3HJ, Midlothian, Scotland. [Perez-Fournon, I.; Martinez-Navajas, P.] Inst Astrofis Canarias, E-38200 Tenerife, Spain. [Perez-Fournon, I.; Martinez-Navajas, P.] Univ La Laguna, Dept Astrofis, E-38205 Tenerife, Spain. [Djorgovski, S. G.; Scoville, N.; Yan, L.; Riechers, D. A.; Bradford, M.; Vieira, J.] CALTECH, Dept Astron, Pasadena, CA 91125 USA. [Djorgovski, S. G.] King Abdulaziz Univ, Jeddah 21413, Saudi Arabia. [Aguirre, J.; Lupu, R.; Rosenman, M.] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA. [Auld, R.; Eales, S.; Valiante, E.] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales. [Baes, M.] Univ Ghent, Sterrenkundig Observ, B-9000 Ghent, Belgium. [Baker, A. J.] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA. [Cava, A.] Univ Complutense Madrid, Dept Astrofis, Fac CC Fis, E-28040 Madrid, Spain. [Clements, D. L.] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Astrophys Grp, London SW7 2AZ, England. [Dannerbauer, H.] Univ Vienna, Inst Astron, A-1160 Vienna, Austria. [Dannerbauer, H.] Univ Paris Diderot, Irfu SAp, CEA Saclay, Lab AIM Paris Saclay,CEA DSM CNRS, F-91191 Gif Sur Yvette, France. [Dariush, A.; Hopwood, R.] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England. [De Zotti, G.; Negrello, M.] INAF Osservatorio Astron Padova, I-35122 Padua, Italy. [De Zotti, G.] SISSA, I-34136 Trieste, Italy. [Dole, H.] Univ Paris 11, IAS, F-91405 Orsay, France. [Dole, H.] CNRS, UMR 8617, F-91405 Orsay, France. [Frayer, D.] NRAO, Green Bank, WV 24944 USA. [Dunne, L.; Dye, S.; Hoyos, C.; Maddox, S.] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England. [Gavazzi, R.; Omont, A.] Univ Paris 06, Inst Astrophys Paris, UMR 7095, CNRS, F-75014 Paris, France. [Harris, A. I.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA. [Herranz, D.] Inst Fis Cantabria CSIC UC, E-39005 Santander, Spain. [Jarvis, M. J.] Univ Hertfordshire, Ctr Astrophys Res, Sci & Technol Res Inst, Hatfield AL10 9AB, Herts, England. [Jarvis, M. J.] Univ Western Cape, Dept Phys, ZA-7535 Cape Town, South Africa. [Leeuw, L.] Univ Johannesburg, Dept Phys, ZA-2006 Auckland Pk, South Africa. [Leeuw, L.] SETI Inst, Mountain View, CA 94043 USA. [Michalowski, M. J.] Univ Edinburgh, Royal Observ, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland. [Negrello, M.; Serjeant, S.] Open Univ, Dept Phys Sci, Milton Keynes MK7 6AA, Bucks, England. [Scott, D.] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada. [Smail, I.; Swinbank, A. M.] Univ Durham, Inst Computat Cosmol, Durham DH1 3LE, England. [Verma, A.] Univ Oxford, Oxford OX1 3RH, England. [van der Werf, P.] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands. RP Fu, H (reprint author), Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. EM haif@uci.edu RI Baes, Maarten/I-6985-2013; Smail, Ian/M-5161-2013; Herranz, Diego/K-9143-2014; Lupu, Roxana/P-9060-2014; Wardlow, Julie/C-9903-2015; Ivison, R./G-4450-2011; Cava, Antonio/C-5274-2017; OI De Hoyos Fernandez De Cordova, Carlos/0000-0003-3120-6856; Dye, Simon/0000-0002-1318-8343; Scott, Douglas/0000-0002-6878-9840; Baes, Maarten/0000-0002-3930-2757; Smail, Ian/0000-0003-3037-257X; Herranz, Diego/0000-0003-4540-1417; Lupu, Roxana/0000-0003-3444-5908; Wardlow, Julie/0000-0003-2376-8971; Ivison, R./0000-0001-5118-1313; Cava, Antonio/0000-0002-4821-1275; De Zotti, Gianfranco/0000-0003-2868-2595; Maddox, Stephen/0000-0001-5549-195X FU NSF [AST-0645427, AST-0909182]; Spanish grants [ESP2007-65812-C02-02, AYA2010-21697-C05-04]; ASI/INAF [I/072/09/0]; MIUR; W.M. Keck Foundation; NASA Herschel Science Center/JPL; ESA Member States; NASA FX We thank the anonymous referee for comments that helped improve the paper. H. F., A. C., J.L.W., and S. K. acknowledge support from NSF CAREER AST-0645427. I. P. F. is supported by the Spanish grants ESP2007-65812-C02-02 and AYA2010-21697-C05-04. S. G. D. acknowledges partial support from the NSF grant AST-0909182. G.D.Z. and M.N. acknowledge support from ASI/INAF agreement I/072/09/0 ("Planck LFI Activity of Phase E2") and from MIUR through the PRIN 2009. Some of the data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. The Herschel-ATLAS is a project with Herschel, which is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. The H-ATLAS Web site is http://www.h-atlas.org/. The US participants acknowledge support from the NASA Herschel Science Center/JPL. Partly based on observations obtained with Planck (http://www.esa.int/Planck), an ESA science mission with instruments and contributions directly funded by ESA Member States, NASA, and Canada. Support for CARMA construction was derived from the Gordon and Betty Moore Foundation, the Kenneth T. and Eileen L. Norris Foundation, the James S. McDonnell Foundation, the Associates of the California Institute of Technology, the University of Chicago, the states of California, Illinois, and Maryland, and the National Science Foundation. Ongoing CARMA development and operations are supported by the National Science Foundation under a cooperative agreement, and by the CARMA partner universities. The William Herschel Telescope is operated on the island of La Palma by the Issac Newton Group in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. NR 90 TC 47 Z9 47 U1 0 U2 14 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 2012 VL 753 IS 2 AR 134 DI 10.1088/0004-637X/753/2/134 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 967MR UT WOS:000305912700041 ER PT J AU Gonzalez, AH Stanford, SA Brodwin, M Fedeli, C Dey, A Eisenhardt, PRM Mancone, C Stern, D Zeimann, G AF Gonzalez, Anthony H. Stanford, S. Adam Brodwin, Mark Fedeli, Cosimo Dey, Arjun Eisenhardt, Peter R. M. Mancone, Conor Stern, Daniel Zeimann, Greg TI IDCS J1426.5+3508: COSMOLOGICAL IMPLICATIONS OF A MASSIVE, STRONG LENSING CLUSTER AT z=1.75 SO ASTROPHYSICAL JOURNAL LA English DT Article DE cosmological parameters; cosmology: observations; galaxies: clusters: individual (IDCS J1426.5+3508); gravitational lensing: strong ID GIANT-ARC STATISTICS; DARK-MATTER HALOES; GALAXY CLUSTERS; CROSS-SECTIONS; UNIVERSE; FIELD; POPULATION; POTENTIALS; SIMULATION; DEPENDENCE AB The galaxy cluster IDCS J1426.5+3508 at z = 1.75 is the most massive galaxy cluster yet discovered at z > 1.4 and the first cluster at this epoch for which the Sunyaev-Zel'Dovich effect has been observed. In this paper, we report on the discovery with Hubble Space Telescope imaging of a giant arc associated with this cluster. The curvature of the arc suggests that the lensing mass is nearly coincident with the brightest cluster galaxy, and the color is consistent with the arc being a star-forming galaxy. We compare the constraint on M-200 based upon strong lensing with Sunyaev-Zel'Dovich results, finding that the two are consistent if the redshift of the arc is z greater than or similar to 3. Finally, we explore the cosmological implications of this system, considering the likelihood of the existence of a strongly lensing galaxy cluster at this epoch in a Lambda CDM universe. While the existence of the cluster itself can potentially be accommodated if one considers the entire volume covered at this redshift by all current high-redshift cluster surveys, the existence of this strongly lensed galaxy greatly exacerbates the long-standing giant arc problem. For standard Lambda CDM structure formation and observed background field galaxy counts this lens system should not exist. Specifically, there should be no giant arcs in the entire sky as bright in F814W as the observed arc for clusters at z >= 1.75, and only similar to 0.3 as bright in F160W as the observed arc. If we relax the redshift constraint to consider all clusters at z >= 1.5, the expected number of giant arcs rises to similar to 15 in F160W, but the number of giant arcs of this brightness in F814W remains zero. These arc statistic results are independent of the mass of IDCS J1426.5+3508. We consider possible explanations for this discrepancy. C1 [Gonzalez, Anthony H.; Fedeli, Cosimo; Mancone, Conor] Univ Florida, Dept Astron, Gainesville, FL 32611 USA. [Stanford, S. Adam; Zeimann, Greg] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. [Stanford, S. Adam] Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA. [Brodwin, Mark] Univ Missouri, Dept Phys, Kansas City, MO 64110 USA. [Brodwin, Mark] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Dey, Arjun] Natl Opt Astron Observ, Tucson, AZ 85719 USA. [Eisenhardt, Peter R. M.; Stern, Daniel] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. RP Gonzalez, AH (reprint author), Univ Florida, Dept Astron, Gainesville, FL 32611 USA. FU Nancy Levenson; NASA through HST GO programs [11663, 12203]; National Science Foundation [AST-0708490]; U.S. Department of Energy [W-7405-ENG-48]; NOAO; NASA FX The authors thank the anonymous referee for suggestions that improved the quality of this paper. We are also grateful to the Gemini Observatory for allocating Director's Discretionary time to obtain a redshift for the giant arc. We appreciate the support provided by Nancy Levenson and the rest of the Gemini staff for this project. Gemini Observatory is operated by the Association of Universities for Research in Astronomy, Inc., under a cooperative agreement with the NSF on behalf of the Gemini partnership: the National Science Foundation (United States), the Science and Technology Facilities Council (United Kingdom), the National Research Council (Canada), CONICYT (Chile), the Australian Research Council (Australia), Ministerio da Ciencia, Tecnologia e Inovacao (Brazil), and Ministerio de Ciencia, Tecnologia e Innovacion Productiva (Argentina). This work is based in part on data obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. Support for this research was provided by NASA through HST GO programs 11663 and 12203. A.H.G. thanks Marusa Bradac for a useful discussion about the arc, and also acknowledges support from the National Science Foundation through the grant AST-0708490. The work by S.A.S. at LLNL was performed under the auspices of the U.S. Department of Energy under Contract No. W-7405-ENG-48, and support for M.B. was provided by the W. M. Keck Foundation. The work of P.R.M.E. and D.S. was carried out at Jet Propulsion Laboratory, California Institute of Technology, under a contract with NASA. The research activities of A.D. are supported by NOAO, which is operated by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation. NR 58 TC 22 Z9 22 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 2012 VL 753 IS 2 AR 163 DI 10.1088/0004-637X/753/2/163 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 967MR UT WOS:000305912700070 ER PT J AU Gu, WM AF Gu, Wei-Min TI RADIATION PRESSURE-SUPPORTED ACCRETION DISKS: VERTICAL STRUCTURE, ENERGY ADVECTION, AND CONVECTIVE STABILITY SO ASTROPHYSICAL JOURNAL LA English DT Article DE accretion, accretion disks; black hole physics; convection; hydrodynamics; instabilities ID BLACK-HOLE; DOMINATED ACCRETION; MAGNETOHYDRODYNAMIC SIMULATIONS; EDDINGTON LUMINOSITY; GAS-PRESSURE; SLIM; THICK; DISSIPATION; OUTFLOWS; MODELS AB By taking into account the local energy balance per unit volume between the viscous heating and the advective cooling plus the radiative cooling, we investigate the vertical structure of radiation pressure-supported accretion disks in spherical coordinates. Our solutions show that the photosphere of the disk is close to the polar axis and therefore the disk seems to be extremely thick. However, the density profile implies that most of the accreted matter exists in a moderate range around the equatorial plane. We show that the well-known polytropic relation between the pressure and the density is unsuitable for describing the vertical structure of radiation pressure-supported disks. More importantly, we find that the energy advection is significant even for slightly sub-Eddington accretion disks. We argue that the non-negligible advection may help us understand why the standard thin disk model is likely to be inaccurate above similar to 0.3 Eddington luminosity, which was found by some works on black hole spin measurement. Furthermore, the solutions satisfy the Solberg-Hoiland conditions, which indicate the disk to be convectively stable. In addition, we discuss the possible link between our disk model and ultraluminous X-ray sources. C1 [Gu, Wei-Min] Xiamen Univ, Dept Phys, Xiamen 361005, Fujian, Peoples R China. [Gu, Wei-Min] Xiamen Univ, Inst Theoret Phys & Astrophys, Xiamen 361005, Fujian, Peoples R China. [Gu, Wei-Min] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Gu, WM (reprint author), Xiamen Univ, Dept Phys, Xiamen 361005, Fujian, Peoples R China. EM guwm@xmu.edu.cn RI Gu, WM/G-3984-2010 FU National Natural Science Foundation of China [11073015, 10833002]; National Basic Research Program (973 Program) of China [2009CB824800]; China Scholarship Council [2009835057] FX The author is particularly grateful to Ramesh Narayan for constructive suggestions and beneficial discussions. The author also thanks Ivan Hubeny, Da-Bin Lin, Aleksander Sadowski, Lijun Gou, Yucong Zhu, and Shan-Shan Weng for helpful discussions, and the referee for providing useful comments to improve the paper. This work was supported by the National Natural Science Foundation of China under grants 11073015 and 10833002, the National Basic Research Program (973 Program) of China under grant 2009CB824800, and the scholarship from China Scholarship Council under grant 2009835057. NR 32 TC 12 Z9 13 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 2012 VL 753 IS 2 AR 118 DI 10.1088/0004-637X/753/2/118 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 967MR UT WOS:000305912700025 ER PT J AU Guarcello, MG Caramazza, M Micela, G Sciortino, S Drake, JJ Prisinzano, L AF Guarcello, M. G. Caramazza, M. Micela, G. Sciortino, S. Drake, J. J. Prisinzano, L. TI CHANDRA/ACIS-I STUDY OF THE X-RAY PROPERTIES OF THE NGC 6611 AND M16 STELLAR POPULATIONS SO ASTROPHYSICAL JOURNAL LA English DT Article DE open clusters and associations: individual (NGC 6611 and M16); stars: coronae; stars: massive; stars: pre-main sequence; X-rays: stars ID PRE-MAIN-SEQUENCE; ORION-NEBULA-CLUSTER; EMISSION-LINE DIAGNOSTICS; INTERMEDIATE-MASS STARS; VLT-FLAMES SURVEY; EAGLE-NEBULA; YOUNG STELLAR; OB STARS; SPATIAL-DISTRIBUTION; CIRCUMSTELLAR DISKS AB Mechanisms regulating the origin of X-rays in young stellar objects and the correlation with their evolutionary stage are under debate. Studies of the X-ray properties in young clusters allow us to understand these mechanisms. One ideal target for this analysis is the Eagle Nebula (M16), with its central cluster NGC 6611. At 1750 pc from the Sun, it harbors 93 OB stars, together with a population of low-mass stars from embedded protostars to disk-less Class III objects, with age <= 3Myr. We study an archival 78 ks Chandra/ACIS-I observation of NGC 6611 and two new 80 ks observations of the outer region of M16, one centered on the Column V and the other on a region of the molecular cloud with ongoing star formation. We detect 1755 point sources with 1183 candidate cluster members (219 disk-bearing and 964 disk-less). We study the global X-ray properties of M16 and compare them with those of the Orion Nebula Cluster. We also compare the level of X-ray emission of Class II and Class III stars and analyze the X-ray spectral properties of OB stars. Our study supports the lower level of X-ray activity for the disk-bearing stars with respect to the disk-less members. The X-ray luminosity function (XLF) of M16 is similar to that of Orion, supporting the universality of the XLF in young clusters. Eighty-five percent of the O stars of NGC 6611 have been detected in X-rays. With only one possible exception, they show soft spectra with no hard components, indicating that mechanisms for the production of hard X-ray emission in O stars are not operating in NGC 6611. C1 [Guarcello, M. G.; Drake, J. J.] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. [Caramazza, M.; Micela, G.; Sciortino, S.; Prisinzano, L.] INAF Osservatorio Astron Palermo, I-90134 Palermo, Italy. RP Guarcello, MG (reprint author), Smithsonian Astrophys Observ, MS-67,60 Garden St, Cambridge, MA 02138 USA. OI Prisinzano, Loredana/0000-0002-8893-2210; Micela, Giuseppina/0000-0002-9900-4751 FU Chandra Grant [GO0-11040X]; NASA [NAS8-39073]; PRIN-INAF FX We thank the anonymous referee for useful comments and suggestions. This work is based on observations performed with Chandra/ACIS-I. M. G. G. was supported by Chandra Grant GO0-11040X. J. J. D. was supported by the NASA contract NAS8-39073 to the Chandra X-ray Center and thanks the Director, H. Tananbaum, for continuing advice and support. G.M., S.S., M.C., and L.P. were supported by the contract PRIN-INAF 2009. NR 76 TC 9 Z9 9 U1 0 U2 7 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 2012 VL 753 IS 2 AR 117 DI 10.1088/0004-637X/753/2/117 PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 967MR UT WOS:000305912700024 ER PT J AU Meisner, AM Frebel, A Juric, M Finkbeiner, DP AF Meisner, Aaron M. Frebel, Anna Juric, Mario Finkbeiner, Douglas P. TI THE METALLICITY OF THE MONOCEROS STREAM SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: dwarf; galaxies: interactions; Galaxy: evolution; Galaxy: stellar content; Galaxy: structure; stars: abundances ID SAGITTARIUS DWARF GALAXY; MILKY-WAY TOMOGRAPHY; DIGITAL SKY SURVEY; ANTICENTER STELLAR STRUCTURE; CANIS-MAJOR; GIANT BRANCH; SURVEY VIEW; STARS; HALO; KINEMATICS AB We present low-resolution MMT Hectospec spectroscopy of 594 candidate Monoceros stream member stars. Based on strong color-magnitude diagram overdensities, we targeted three fields within the stream's footprint, with 178 degrees <= l <= 203 degrees and -25 degrees <= b <= 25 degrees. By comparing the measured iron abundances with those expected from smooth Galactic components alone, we measure, for the first time, the spectroscopic metallicity distribution function for Monoceros. We find the stream to be chemically distinct from both the thick disk and halo, with [Fe/H] = -1, and do not detect a trend in the stream's metallicity with Galactic longitude. Passing from b = +25 degrees to b = -25 degrees, the median Monoceros metallicity trends upward by 0.1 dex, though uncertainties in modeling sample contamination by the disk and halo make this a marginal detection. In each field, we find Monoceros to have an intrinsic [Fe/H] dispersion of 0.10-0.22 dex. From the Ca II K line, we measure [Ca/Fe] for a subsample of metal-poor program stars with -1.1 < [Fe/H] < -0.5. In two of three fields, we find calcium deficiencies qualitatively similar to previously reported [Ti/Fe] underabundances in Monoceros and the Sagittarius tidal stream. Further, using 90 spectra of thick disk stars in the Monoceros pointings with b approximate to +/-25 degrees, we detect a 0.22 dex north/south metallicity asymmetry coincident with known stellar density asymmetry at R-GC approximate to 12 kpc and vertical bar Z vertical bar approximate to 1.7 kpc. Our median Monoceros [Fe/H] = -1.0 and its relatively low dispersion naturally fit the expectation for an appropriately luminous M-V similar to -13 dwarf galaxy progenitor. C1 [Meisner, Aaron M.; Finkbeiner, Douglas P.] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA. [Meisner, Aaron M.; Frebel, Anna; Juric, Mario; Finkbeiner, Douglas P.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Meisner, AM (reprint author), Harvard Univ, Dept Phys, 17 Oxford St, Cambridge, MA 02138 USA. EM ameisner@fas.harvard.edu; afrebel@mit.edu; mjuric@cfa.harvard.edu; dfinkbeiner@cfa.harvard.edu OI Meisner, Aaron/0000-0002-1125-7384 FU National Defense Science & Engineering Graduate fellowship; Clay Fellowship; NASA [HF-51255.01-A, NAS 5-26555]; Space Telescope Science Institute FX We warmly thank Nelson Caldwell for his advice on MMT observations, Hectospec details, and queue scheduling, as well as Evan Kirby and John Norris for fruitful discussions. We furthermore thank the queue observers and the SAO Telescope Data Center for reducing the data. This research made extensive use of the Vienna Atomic Line Database (VALD). A.M.M. is supported by a National Defense Science & Engineering Graduate fellowship. A.F. is supported by a Clay Fellowship administered by the Smithsonian Astrophysical Observatory. M.J. acknowledges support by NASA through Hubble Fellowship grant No. HF-51255.01-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under the contract NAS 5-26555. NR 40 TC 12 Z9 12 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 2012 VL 753 IS 2 AR 116 DI 10.1088/0004-637X/753/2/116 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 967MR UT WOS:000305912700023 ER PT J AU Morales-Calderon, M Stauffer, JR Stassun, KG Vrba, FJ Prato, L Hillenbrand, LA Terebey, S Covey, KR Rebull, LM Terndrup, DM Gutermuth, R Song, I Plavchan, P Carpenter, JM Marchis, F Garcia, EV Margheim, S Luhman, KL Angione, J Irwin, JM AF Morales-Calderon, M. Stauffer, J. R. Stassun, K. G. Vrba, F. J. Prato, L. Hillenbrand, L. A. Terebey, S. Covey, K. R. Rebull, L. M. Terndrup, D. M. Gutermuth, R. Song, I. Plavchan, P. Carpenter, J. M. Marchis, F. Garcia, E. V. Margheim, S. Luhman, K. L. Angione, J. Irwin, J. M. TI YSOVAR: SIX PRE-MAIN-SEQUENCE ECLIPSING BINARIES IN THE ORION NEBULA CLUSTER SO ASTROPHYSICAL JOURNAL LA English DT Article DE binaries: eclipsing; open clusters and associations: individual (Orion); stars: pre-main sequence; stars: variables: general ID LOW-MASS STARS; SPITZER-SPACE-TELESCOPE; UPPER CENTAURUS-LUPUS; YOUNG BROWN DWARFS; X-RAY OBSERVATIONS; KECK-II-TELESCOPE; SPECTROSCOPIC BINARY; 2MASS J05352184-0546085; ECHELLE SPECTROGRAPH; EVOLUTIONARY TRACKS AB Eclipsing binaries (EBs) provide critical laboratories for empirically testing predictions of theoretical models of stellar structure and evolution. Pre-main-sequence (PMS) EBs are particularly valuable, both due to their rarity and the highly dynamic nature of PMS evolution, such that a dense grid of PMS EBs is required to properly calibrate theoretical PMS models. Analyzing multi-epoch, multi-color light curves for similar to 2400 candidate Orion Nebula Cluster (ONC) members from our Warm Spitzer Exploration Science Program YSOVAR, we have identified 12 stars whose light curves show eclipse features. Four of these 12 EBs are previously known. Supplementing our light curves with follow-up optical and near-infrared spectroscopy, we establish two of the candidates as likely field EBs lying behind the ONC. We confirm the remaining six candidate systems, however, as newly identified ONC PMS EBs. These systems increase the number of known PMS EBs by over 50% and include the highest mass (theta(1) Ori E, for which we provide a complete set of well-determined parameters including component masses of 2.807 and 2.797 M-circle dot) and longest-period (ISOY J053505.71-052354.1, P similar to 20 days) PMS EBs currently known. In two cases (theta(1) Ori E and ISOY J053526.88-044730.7), enough photometric and spectroscopic data exist to attempt an orbit solution and derive the system parameters. For the remaining systems, we combine our data with literature information to provide a preliminary characterization sufficient to guide follow-up investigations of these rare, benchmark systems. C1 [Morales-Calderon, M.; Stauffer, J. R.; Rebull, L. M.] CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA. [Morales-Calderon, M.] Ctr Astrobiol INTA CSIC, E-28691 Villanueva De La Canada, Spain. [Stassun, K. G.] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. [Stassun, K. G.] Fisk Univ, Dept Phys, Nashville, TN 37208 USA. [Stassun, K. G.] MIT, Dept Phys, Cambridge, MA 02139 USA. [Vrba, F. J.] USN Observ, Flagstaff Stn, Flagstaff, AZ 86001 USA. [Prato, L.] Lowell Observ, Flagstaff, AZ 86001 USA. [Hillenbrand, L. A.; Carpenter, J. M.] CALTECH, Dept Astron, Pasadena, CA 91125 USA. [Terebey, S.; Angione, J.] Calif State Univ Los Angeles, Dept Phys & Astron, Los Angeles, CA 90032 USA. [Covey, K. R.] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA. [Terndrup, D. M.] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA. [Terndrup, D. M.] Natl Sci Fdn, Arlington, VA 22230 USA. [Gutermuth, R.] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA. [Song, I.] Univ Georgia, Dept Phys & Astron, Athens, GA 30602 USA. [Plavchan, P.] CALTECH, NASA Exoplanet Sci Inst, Pasadena, CA 91125 USA. [Marchis, F.] Carl Sagan Ctr, SETI Inst, Mountain View, CA 94043 USA. [Margheim, S.] So Operat Ctr, Gemini Observ, La Serena, Chile. [Luhman, K. L.] So Operat Ctr, Gemini Observ, La Serena, Chile. [Luhman, K. L.] Penn State Univ, Ctr Exoplanets & Habitable Worlds, University Pk, PA 16802 USA. [Irwin, J. M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Morales-Calderon, M (reprint author), CALTECH, Spitzer Sci Ctr, 1200 E Calif Blvd, Pasadena, CA 91125 USA. EM mariamc@cab.inta-csic.es RI Marchis, Franck/H-3971-2012; Morales-Calderon, Maria/C-8384-2017; OI Morales-Calderon, Maria/0000-0001-9526-9499; Rebull, Luisa/0000-0001-6381-515X; Covey, Kevin/0000-0001-6914-7797 FU NASA through JPL/Caltech; National Aeronautics and Space Administration; National Science Foundation [AST-0544588, AST-1009136]; Pennsylvania State University; Eberly College of Science; Pennsylvania Space Grant Consortium; Gemini Observatory, Argentina; Gemini Observatory, Australia; Gemini Observatory, Brazil; Gemini Observatory, Canada; Gemini Observatory, Chile; Gemini Observatory, United Kingdom; Gemini Observatory, United States of America FX We are grateful to the anonymous referee for a helpful report. This work is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Support for this work was provided by NASA through an award issued by JPL/Caltech. This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. K.L. was supported by grant AST-0544588 and L.P. by grant AST-1009136 from the National Science Foundation. The Center for Exoplanets and Habitable Worlds is supported by the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium. S.M. was supported by the Gemini Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., on behalf of the international Gemini partnership of Argentina, Australia, Brazil, Canada, Chile, the United Kingdom, and the United States of America. NR 73 TC 22 Z9 22 U1 1 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 2012 VL 753 IS 2 AR 149 DI 10.1088/0004-637X/753/2/149 PG 17 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 967MR UT WOS:000305912700056 ER PT J AU Munoz-Jaramillo, A Sheeley, NR Zhang, J DeLuca, EE AF Munoz-Jaramillo, Andres Sheeley, Neil R., Jr. Zhang, Jie DeLuca, Edward E. TI CALIBRATING 100 YEARS OF POLAR FACULAE MEASUREMENTS: IMPLICATIONS FOR THE EVOLUTION OF THE HELIOSPHERIC MAGNETIC FIELD SO ASTROPHYSICAL JOURNAL LA English DT Article DE solar-terrestrial relations; Sun: activity; Sun: dynamo; Sun: faculae, plages; Sun: surface magnetism ID CYCLE 23; SOLAR; FLUX AB Although the Sun's polar magnetic fields are thought to provide important clues for understanding the 11 year sunspot cycle, including the observed variations of its amplitude and period, the current database of high-quality polar field measurements spans relatively few sunspot cycles. In this paper, we address this deficiency by consolidating Mount Wilson Observatory polar faculae data from four data reduction campaigns, validating it through a comparison with facular data counted automatically from Michelson Doppler Imager (MDI) intensitygrams, and calibrating it against polar field measurements taken by the Wilcox Solar Observatory and average polar field and total polar flux calculated using MDI line-of-sight magnetograms. Our results show that the consolidated polar facular measurements are in excellent agreement with both polar field and polar flux estimates, making them an ideal proxy to study the evolution of the polar magnetic field. Additionally, we combine this database with sunspot area measurements to study the role of the polar magnetic flux in the evolution of the heliospheric magnetic field (HMF). We find that there is a strong correlation between HMF and polar flux at solar minimum and that, taken together, polar flux and sunspot area are better at explaining the evolution of the HMF during the last century than sunspot area alone. C1 [Munoz-Jaramillo, Andres; DeLuca, Edward E.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Munoz-Jaramillo, Andres] Univ Corp Atmospher Res, Boulder, CO 80307 USA. [Munoz-Jaramillo, Andres] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA. [Sheeley, Neil R., Jr.] USN, Div Space Sci, Res Lab, Washington, DC 20375 USA. [Zhang, Jie] George Mason Univ, Sch Phys Astron & Computat Sci, Fairfax, VA 22030 USA. RP Munoz-Jaramillo, A (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM amunoz@cfa.harvard.edu; neil.sheeley@nrl.navy.mil; jzhang7@gmu.edu; edeluca@cfa.harvard.edu RI DeLuca, Edward/L-7534-2013; OI DeLuca, Edward/0000-0001-7416-2895; Munoz-Jaramillo, Andres/0000-0002-4716-0840 FU NASA [NNX07AO72G]; University of Utah; Office of Naval Research; Lockheed Martin [SP02H1701R]; NSF [ATM-0748003] FX We are grateful to Steve Cranmer for the original suggestion which led to this collaboration, Georgios Cintzoglou for his invaluable help with the automatic detection algorithm, the anonymous referee for feedback which helped improved the quality of this paper, Aad Vanballegooijen and Yi-Ming Wang for useful discussions, Mike Lockwood and Leif Svalgaard for sharing their HMF data and discussing their usage with us, Laura Balmaceda and Sami Solanki for sharing their sunspot database with us, and Jeneen Sommers for her invaluable help in acquiring MDI intensitygram and LOS magnetogram data. This research is supported by the NASA Living With a Star Jack Eddy Postdoctoral Fellowship Program, administered by the UCAR Visiting Scientist Programs and has made extensive use of SAO/NASA's Astrophysics Data System. The computations required for this work were performed using the resources of the Harvard-Smithsonian Center for Astrophysics-we thank Jonathan Sattelberger and Alisdair Davey for much appreciated technical support. Wilcox Solar Observatory data used in this study were obtained via the Web site http://wso.stanford.edu at 2011:11:7 courtesy of J. Todd Hoeksema. The Wilcox Solar Observatory is currently supported by NASA. The MDI instrument is part of SOHO, which is a project of international cooperation between ESA and NASA. OMNI data were obtained from the Space Physics Data Facility at NASA's Goddard Space flight center http://omniweb.gsfc.nasa.gov/. Andres Munoz-Jaramillo is very grateful to David Kieda for his support and sponsorship at the University of Utah. Neil R. Sheeley is grateful to Roger K. Ulrich (UCLA) for permission to examine the historical collection of Mount Wilson white light images, and to his colleagues J. E. Boyden and S. Padilla for help during the most recent data reduction campaign. At NRL, financial support was provided by NASA and the Office of Naval Research. Ed DeLuca was supported by contract SP02H1701R from Lockheed Martin to SAO. Jie Zhang is supported by NSF Grant ATM-0748003 and NASA Grant NNX07AO72G. NR 29 TC 26 Z9 26 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 2012 VL 753 IS 2 AR 146 DI 10.1088/0004-637X/753/2/146 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 967MR UT WOS:000305912700053 ER PT J AU Nyland, K Marvil, J Wrobel, JM Young, LM Zauderer, BA AF Nyland, Kristina Marvil, Josh Wrobel, J. M. Young, Lisa M. Zauderer, B. Ashley TI THE INTERMEDIATE-MASS BLACK HOLE CANDIDATE IN THE CENTER OF NGC 404: NEW EVIDENCE FROM RADIO CONTINUUM OBSERVATIONS SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: active; galaxies: dwarf; galaxies: individual (NGC 404); galaxies: nuclei; galaxies: star formation; radio continuum: galaxies ID ACTIVE GALACTIC NUCLEI; HUBBLE-SPACE-TELESCOPE; DWARF STARBURST GALAXY; GLOBULAR-CLUSTER G1; X-RAY-PROPERTIES; FUNDAMENTAL PLANE; STAR-CLUSTERS; LINER GALAXIES; CENTRAL ENGINE; HENIZE 2-10 AB We present the results of deep, high-resolution, 5 GHz Expanded Very Large Array (EVLA) observations of the nearby, dwarf lenticular galaxy and intermediate-mass black hole candidate (M-BH similar to 4.5 x 10(5) M-circle dot), NGC 404. For the first time, radio emission at frequencies above 1.4 GHz has been detected in this galaxy. We found a modestly resolved source in the NGC 404 nucleus with a total radio luminosity of 7.6 +/- 0.7 x 10(17) W Hz(-1) at 5 GHz and a spectral index from 5 to 7.45 GHz of alpha = -0.88 +/- 0.30. NGC 404 is only the third central intermediate-mass black hole candidate detected in the radio regime with subarcsecond resolution. The position of the radio source is consistent with the optical center of the galaxy and the location of a known, hard X-ray point source (L-X similar to 1.2 x 10(37) erg s(-1)). The faint radio and X-ray emission could conceivably be produced by an X-ray binary, star formation, a supernova remnant, or a low-luminosity active galactic nucleus powered by an intermediate-mass black hole. In light of our new EVLA observations, we find that the most likely scenario is an accreting intermediate-mass black hole, with other explanations being either incompatible with the observed X-ray and/or radio luminosities or statistically unlikely. C1 [Nyland, Kristina; Marvil, Josh; Young, Lisa M.] New Mexico Inst Min & Technol, Dept Phys, Socorro, NM 87801 USA. [Nyland, Kristina; Marvil, Josh; Wrobel, J. M.] Natl Radio Astron Observ, Socorro, NM 87801 USA. [Zauderer, B. Ashley] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Nyland, K (reprint author), New Mexico Inst Min & Technol, Dept Phys, 801 Leroy Pl, Socorro, NM 87801 USA. EM knyland@nmt.edu FU NRAO; NSF [1109803] FX We thank the anonymous referee for helpful suggestions that have improved the clarity and strength of this work. We also thank Anil Seth for helpful comments and for providing us with coordinate frame-corrected Hubble Legacy Archive images. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. This research was partially funded by the NRAO Graduate Summer Student Research Assistantship Program. We would also like to acknowledge funding support from NSF grant 1109803. NR 72 TC 10 Z9 10 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 2012 VL 753 IS 2 AR 103 DI 10.1088/0004-637X/753/2/103 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 967MR UT WOS:000305912700010 ER PT J AU Offner, SSR Robitaille, TP Hansen, CE McKee, CF Klein, RI AF Offner, Stella S. R. Robitaille, Thomas P. Hansen, Charles E. McKee, Christopher F. Klein, Richard I. TI OBSERVING SIMULATED PROTOSTARS WITH OUTFLOWS: HOW ACCURATE ARE PROTOSTELLAR PROPERTIES INFERRED FROM SEDs? SO ASTROPHYSICAL JOURNAL LA English DT Article DE infrared: stars; polarization; radiative transfer; stars: formation; stars: low-mass; stars: pre-main sequence; stars: winds, outflows ID YOUNG STELLAR OBJECTS; SPECTRAL ENERGY-DISTRIBUTIONS; MASS STAR-FORMATION; SELF-GRAVITATIONAL HYDRODYNAMICS; ADAPTIVE MESH REFINEMENT; RADIATIVE-TRANSFER; TURBULENT FRAGMENTATION; ACCRETION; EVOLUTION; OPHIUCHUS AB The properties of unresolved protostars and their local environment are frequently inferred from spectral energy distributions (SEDs) using radiative transfer modeling. In this paper, we use synthetic observations of realistic star formation simulations to evaluate the accuracy of properties inferred from fitting model SEDs to observations. We use ORION, an adaptive mesh refinement (AMR) three-dimensional gravito-radiation-hydrodynamics code, to simulate low-mass star formation in a turbulent molecular cloud including the effects of protostellar outflows. To obtain the dust temperature distribution and SEDs of the forming protostars, we post-process the simulations using HYPERION, a state-of-the-art Monte Carlo radiative transfer code. We find that the ORION and HYPERION dust temperatures typically agree within a factor of two. We compare synthetic SEDs of embedded protostars for a range of evolutionary times, simulation resolutions, aperture sizes, and viewing angles. We demonstrate that complex, asymmetric gas morphology leads to a variety of classifications for individual objects as a function of viewing angle. We derive best-fit source parameters for each SED through comparison with a pre-computed grid of radiative transfer models. While the SED models correctly identify the evolutionary stage of the synthetic sources as embedded protostars, we show that the disk and stellar parameters can be very discrepant from the simulated values, which is expected since the disk and central source are obscured by the protostellar envelope. Parameters such as the stellar accretion rate, stellar mass, and disk mass show better agreement, but can still deviate significantly, and the agreement may in some cases be artificially good due to the limited range of parameters in the set of model SEDs. Lack of correlation between the model and simulation properties in many individual instances cautions against overinterpreting properties inferred from SEDs for unresolved protostellar sources. C1 [Offner, Stella S. R.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Robitaille, Thomas P.] Max Planck Inst Astron, D-69117 Heidelberg, Germany. [Hansen, Charles E.; McKee, Christopher F.; Klein, Richard I.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [McKee, Christopher F.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Klein, Richard I.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Offner, SSR (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM soffner@cfa.harvard.edu OI Robitaille, Thomas/0000-0002-8642-1329 FU NSF [AST-0901055, AST-0908553]; NASA; ATFP [NNX09AK31G]; U.S. Department of Energy at LLNL [DE-AC52-07NA]; Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231] FX The authors thank the anonymous referee for constructive suggestions and Andrew Cunningham for helpful discussions of protostellar outflows. This research has been supported by the NSF through grants AST-0901055 (S.S.R.O.) and AST-0908553 (C.F.M. and R.I.K.), by NASA through the Spitzer Space Telescope Fellowship Program (T.P.R.) and ATFP grant NNX09AK31G (R.I.K., C.F.M.), and by the U.S. Department of Energy at LLNL under contract DE-AC52-07NA (R.I.K.). The ORION simulations were performed on resources managed by the National Energy Research Scientific Computing Center, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. The HYPERION calculations and other data analysis were performed on the Odyssey cluster, which is supported by the Harvard FAS Sciences Division Research Computing Group. Figure 2 was rendered using yt (Turk et al. 2011). NR 61 TC 26 Z9 26 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 2012 VL 753 IS 2 AR 98 DI 10.1088/0004-637X/753/2/98 PG 17 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 967MR UT WOS:000305912700005 ER PT J AU Pe'er, A Markoff, S AF Pe'er, Asaf Markoff, Sera TI X-RAY EMISSION FROM TRANSIENT JET MODEL IN BLACK HOLE BINARIES SO ASTROPHYSICAL JOURNAL LA English DT Article DE radiation mechanisms: non-thermal; stars: winds, outflows; X-rays: binaries; X-rays: bursts; X-rays: individual (XTE J1118+480) ID BROAD-BAND SPECTRUM; NOVA XTE J1118+480; SGR-A-ASTERISK; PARTICLE-ACCELERATION; HARD STATE; GRB 970508; MULTIWAVELENGTH OBSERVATIONS; SYNCHROTRON EMISSION; ASTROPHYSICAL SHOCKS; RELATIVISTIC JETS AB While the non-thermal radio through at least near-infrared emission in the hard state in X-ray binaries (XRBs) is known to originate in jets, the source of the non-thermal X-ray component is still uncertain. We introduce a new model for this emission, which takes into account the transient nature of outflows, and show that it can explain the observed properties of the X-ray spectrum. Rapid radiative cooling of the electrons naturally accounts for the break often seen below around 10 keV, and for the canonical spectral slope F-nu alpha nu(-1/2) observed below the break. We derive the constraints set by the data for both synchrotron- and Compton-dominated models. We show that for the synchrotron-dominated case, the jet should be launched at radii comparable to the inner radius of the disk (similar to few 100 r(s) for the 2000 outburst of XTE J1118+480), with typical magnetic field B greater than or similar to 10(6) G. We discuss the consequences of our results for the possible connection between the inflow and outflow in the hard state of XRBs. C1 [Pe'er, Asaf] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Markoff, Sera] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1090 GE Amsterdam, Netherlands. RP Pe'er, A (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. FU Netherlands Organization for Scientific Research (NWO); European Community [ITN 215212] FX We thank Dipankar Maitra, Shmulik Balberg, Ramesh Narayan, Jorn Wilms, and Piergiorgio Casella for useful discussions and comments. A special thank for Dipankar Maitra for providing us with the reduced data from the 2000 outburst of XTE J1118+480 (from Hynes et al. 2000). S. M. is grateful for support from a Netherlands Organization for Scientific Research (NWO) Vidi Fellowship, and the European Community's Seventh Framework Programme (FP7/2007-2013) under grant agreement number ITN 215212, "Black Hole Universe." NR 78 TC 15 Z9 15 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 2012 VL 753 IS 2 AR 177 DI 10.1088/0004-637X/753/2/177 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 967MR UT WOS:000305912700084 ER PT J AU Shen, Y Liu, X AF Shen, Yue Liu, Xin TI COMPARING SINGLE-EPOCH VIRIAL BLACK HOLE MASS ESTIMATORS FOR LUMINOUS QUASARS SO ASTROPHYSICAL JOURNAL LA English DT Article DE black hole physics; galaxies: active; quasars: general ID ACTIVE GALACTIC NUCLEI; DIGITAL SKY SURVEY; BROAD-LINE REGION; AGN MONITORING PROJECT; HOST-GALAXY STARLIGHT; HIGH-REDSHIFT QUASARS; SURVEY DATA RELEASE-3; EMISSION-LINE; EDDINGTON RATIO; ASTRONOMICAL DATA AB Single-epoch virial black hole (BH) mass estimators utilizing broad emission lines have been routinely applied to high-redshift quasars to estimate their BH masses. Depending on the redshift, different line estimators (H alpha, H beta, MgII lambda 2798, CIV lambda 1549) are often used with optical/near-infrared spectroscopy. Here, we use a homogeneous sample of 60 intermediate-redshift (z similar to 1.5-2.2) Sloan Digital Sky Survey quasars with optical and near-infrared spectra covering CIV through H alpha to investigate the consistency between different single-epoch virial BH mass estimators. We critically compare rest-frame UV line estimators (CIV lambda 1549, CIII] lambda 1908, and MgII lambda 2798) with optical estimators (H beta and H alpha) in terms of correlations between line widths and between continuum/line luminosities, for the high-luminosity regime (L-5100 > 10(45.4) erg s(-1)) probed by our sample. The continuum luminosities of L-1350 and L-3000, and the broad-line luminosities are well correlated with L5100, reflecting the homogeneity of quasar spectra in the rest-frame UV-optical, among which L-1350 and the line luminosities for CIV and CIII] have the largest scatter in the correlation with L-5100. We found that the MgII FWHM correlates well with the FWHMs of the Balmer lines and that the MgII line estimator can be calibrated to yield consistent virial mass estimates with those based on the H beta/H alpha estimators, thus extending earlier results on less luminous objects. The CIV FWHM is poorly correlated with the Balmer line FWHMs, and the scatter between the CIV and H beta FWHMs consists of an irreducible part (similar to 0.12 dex), and a part that correlates with the blueshift of the CIV centroid relative to that of H beta, similar to earlier studies comparing CIV with MgII. The CIII] FWHM is found to correlate with the CIV FWHM, and hence is also poorly correlated with the H beta FWHM. While the CIV and CIII] lines can be calibrated to yield consistent virial mass estimates as H beta on average, the scatter is substantially larger than MgII, and the usage of CIV/CIII] FWHM in the mass estimators does not improve the agreement with the H beta estimator. We discuss controversial claims in the literature on the correlation between CIV and H beta FWHMs, and suggest that the reported correlation is either a result based on small samples or only valid for low-luminosity objects. C1 [Shen, Yue; Liu, Xin] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Shen, Y (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St,MS-51, Cambridge, MA 02138 USA. FU Smithsonian Astrophysical Observatory; NASA through Chandra X-ray Center [PF0-110076]; NASA [NAS8-03060]; Alfred P. Sloan Foundation; National Science Foundation; U.S. Department of Energy; Japanese Monbukagakusho; Max Planck Society; Higher Education Funding Council for England FX We thank the anonymous referee for constructive comments that led to improvement of the manuscript, and Michael Strauss, Benny Trakhtenbrot, Roberto Assef, Kelly Denney, Chris Kochanek, Brad Peterson, and Jenny Greene for insightful comments on the draft. We also thank Brandon Kelly, Jenny Greene, and Gordon Richards for useful discussions during the course of the work, Rob Simcoe for help with the FIRE data reduction pipeline, and Michael Crushing for help with the TripleSpec data reduction pipeline. Y.S. acknowledges support from the Smithsonian Astrophysical Observatory through a Clay Postdoctoral Fellowship. Support for the work of X. L. was provided by NASA through Einstein Postdoctoral Fellowship grant number PF0-110076 awarded by the Chandra X-ray Center, which is operated by the Smithsonian Astrophysical Observatory for NASA under contract NAS8-03060.; Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England. The SDSS Web site is http://www.sdss.org/. NR 88 TC 72 Z9 72 U1 1 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 2012 VL 753 IS 2 AR 125 DI 10.1088/0004-637X/753/2/125 PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 967MR UT WOS:000305912700032 ER PT J AU Stanford, SA Brodwin, M Gonzalez, AH Zeimann, G Stern, D Dey, A Eisenhardt, PR Snyder, GF Mancone, C AF Stanford, S. A. Brodwin, M. Gonzalez, Anthony H. Zeimann, Greg Stern, Daniel Dey, Arjun Eisenhardt, P. R. Snyder, Gregory F. Mancone, C. TI IDCS J1426.5+3508: DISCOVERY OF A MASSIVE, INFRARED-SELECTED GALAXY CLUSTER AT z=1.75 SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: clusters: individual; galaxies: distances and redshifts; galaxies: evolution ID IRAC SHALLOW SURVEY; WIDE-FIELD SURVEY; PROBE; DEEP; CONSTRAINTS; EXTRACTION; RESOLUTION; SOFTWARE; XBOOTES; PROFILE AB We report the discovery of an IR-selected massive galaxy cluster in the IRAC Deep Cluster Survey (IDCS). We present new data from the Hubble Space Telescope and the W. M. Keck Observatory that spectroscopically confirm IDCS J1426.5+3508 at z = 1.75. Moreover, the cluster is detected in archival Chandra data as an extended X-ray source, comprising 53 counts after the removal of point sources. We calculate an X-ray luminosity of L0.5-2 keV = (5.4 +/- 1.2) x 10(44) erg s(-1) within r = 60 arcsec (similar to 1 Mpc diameter), which implies M-200,M- Lx = (5.3 +/- 1.6) x 10(14) M-circle dot. IDCS J1426.5+3508 appears to be an exceptionally massive cluster for its redshift. C1 [Stanford, S. A.; Zeimann, Greg] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. [Stanford, S. A.] Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA. [Brodwin, M.] Univ Missouri, Dept Phys & Astron, Kansas City, MO 64110 USA. [Stanford, S. A.; Snyder, Gregory F.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Gonzalez, Anthony H.; Mancone, C.] Univ Florida, Dept Astron, Gainesville, FL 32611 USA. [Stern, Daniel; Eisenhardt, P. R.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Dey, Arjun] Natl Opt Astron Observ, Tucson, AZ 85719 USA. RP Stanford, SA (reprint author), Univ Calif Davis, Dept Phys, 1 Shields Ave, Davis, CA 95616 USA. EM stanford@physics.ucdavis.edu FU NASA [G09-0150A, NAS 5-26555]; National Science Foundation [AST-0708490]; NASA by JPL/Caltech; NASA through a grant from the Space Telescope Science Institute [11663, 12203]; W. M. Keck Foundation; U. S. Department of Energy [W-7405-ENG-48]; [SV4-74018, A31] FX This work is based in part on observations obtained with the Chandra X-Ray Observatory (Chandra), under contract SV4-74018, A31 with the Smithsonian Astrophysical Observatory which operates Chandra for NASA. Support for this research was provided by the NASA grant G09-0150A. A.H.G. acknowledges support from the National Science Foundation through grant AST-0708490. This work is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Support for this work was provided by NASA through an award issued by JPL/Caltech. Support for HST programs 11663 and 12203 was provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. Some of the data presented here were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. This work makes use of image data from the NOAO Deep Wide-Field Survey (NDWFS) as distributed by the NOAO Science Archive. NOAO is operated by the Association of Universities for Research in Astronomy (AURA), Inc., under a cooperative agreement with the National Science Foundation.; We thank Matt Ashby for creating the IRAC catalogs for SDWFS, Buell Jannuzi for his work on the NDWFS, Michael Brown for combining the NDWFS with SDWFS catalogs, Steve Murray and his XBootes team for obtaining the Chandra data in the Bootes field, and Alexey Vihklinin for advice on the analysis of the Chandra data. We also thank the referee for a report which helped to improve the presentation and interpretation of the results. This paper would not have been possible without the efforts of the support staffs of the Keck Observatory, the Spitzer Space Telescope, the Hubble Space Telescope, and the Chandra X-Ray Observatory. Support for M. B. was provided by the W. M. Keck Foundation. The work by S.A.S. at LLNL was performed under the auspices of the U. S. Department of Energy under Contract No. W-7405-ENG-48. NR 47 TC 71 Z9 71 U1 0 U2 7 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 2012 VL 753 IS 2 AR 164 DI 10.1088/0004-637X/753/2/164 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 967MR UT WOS:000305912700071 ER PT J AU Yuan, Y Neufeld, DA Sonnentrucker, P Melnick, GJ Watson, DM AF Yuan, Yuan Neufeld, David A. Sonnentrucker, Paule Melnick, Gary J. Watson, Dan M. TI SPITZER OBSERVATIONS OF SHOCK-EXCITED HYDROGEN DEUTERIDE IN IC 443C, HH 7, AND HH 54: PROBING THE GAS-PHASE DEUTERIUM ABUNDANCE IN THE DENSE INTERSTELLAR MEDIUM SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM: abundances; ISM: clouds; ISM: molecules; molecular processes; shock waves ID MOLECULAR-HYDROGEN; GALACTIC DISK; HD MOLECULES; ROTATIONAL-EXCITATION; BARYON DENSITY; HIGH-REDSHIFT; BASIC DATA; LINE; RATIO; IC-443 AB We present and analyze observations-carried out using the Infrared Spectrograph (IRS) on the Spitzer Space Telescope-of the R(3) and R(4) pure rotational lines of hydrogen deuteride (HD) detected from shock-heated material associated with the supernova remnant IC 443C and with the Herbig-Haro objects HH 7 and HH 54. Assuming a continuous temperature distribution for gas observed along the sight lines, we have constrained the gas density to be in the similar to 10(3)-10(4) cm(-3) range, using both spectroscopic data for H-2, HD, and CO from IRS and from the Infrared Space Observatory (ISO), as well as photometric data from Spitzer's Infrared Array Camera. The derived HD abundance relative to H-2 is quite sensitive to the assumed excitation conditions in the emitting gas. Assuming that HD accounts for all gas-phase deuterium in the emitting material, and using all the available spectroscopic data to constrain the excitation conditions, we obtained gas-phase deuterium abundances [D/H](gas) of 0.95(-0.27)(+0.54) x 10(-5) and 0.87(-0.27)(+0.31) x 10(-5) (statistical errors only) for IC 443C and HH 54, respectively. The uncertainties in the HD abundance are dominated by systematic effects related to the poorly known excitation conditions, and more accurate estimates of the HD abundance in shocked molecular clouds will require measurements of the emission in additional HD rotational transitions. C1 [Yuan, Yuan; Neufeld, David A.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. [Sonnentrucker, Paule] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Melnick, Gary J.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Watson, Dan M.] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA. RP Yuan, Y (reprint author), Johns Hopkins Univ, Dept Phys & Astron, 3400 N Charles St, Baltimore, MD 21218 USA. NR 55 TC 3 Z9 3 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 2012 VL 753 IS 2 AR 126 DI 10.1088/0004-637X/753/2/126 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 967MR UT WOS:000305912700033 ER PT J AU Zappacosta, L Nicastro, F Krongold, Y Maiolino, R AF Zappacosta, L. Nicastro, F. Krongold, Y. Maiolino, R. TI AN X-RAY WHIM METAL ABSORBER FROM A Mpc-SCALE EMPTY REGION OF SPACE SO ASTROPHYSICAL JOURNAL LA English DT Article DE BL Lacertae objects: individual (H 2356-309); intergalactic medium; large-scale structure of universe; quasars: absorption lines; techniques: spectroscopic; X-rays: galaxies: clusters ID HOT INTERGALACTIC MEDIUM; BL LACERTAE OBJECTS; ABSORPTION-LINES; SCULPTOR WALL; BARYONS; FILAMENT; GALAXIES; CLUSTERS; FOREST; MASS AB We report a detection of an absorption line at similar to 44.8 angstrom in a > 500 ks Chandra HRC-S/LETG X-ray grating spectrum of the blazar H 2356-309. This line can be identified as intervening Cv-K alpha absorption, at z approximate to 0.112, produced by a warm (log T = 5.1 K) intergalactic absorber. The feature is significant at a 2.9 sigma level (accounting for the number of independent redshift trials). We estimate an equivalent hydrogen column density of log N-H = 19.05(Z/Z(circle dot))(-1) cm(-2). Unlike other previously reported FUV/X-ray metal detections of warm-hot intergalactic medium (WHIM), this C v absorber lies in a region with locally low galaxy density, at similar to 2.2 Mpc from the closest galaxy at that redshift, and therefore is unlikely to be associated with an extended galactic halo. We instead tentatively identify this absorber with an intervening WHIM filament possibly permeating a large-scale, 30 Mpc extended, structure of galaxies whose redshift centroid, within a cylinder of 7.5 Mpc radius centered on the line of sight to H 2356-309, is marginally consistent (at a 1.8 sigma level) with the redshift of the absorber. C1 [Zappacosta, L.; Nicastro, F.] INAF Osservatorio Astron Roma, I-00040 Monte Porzio Catone, Italy. [Nicastro, F.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Krongold, Y.] Univ Nacl Autonoma Mexico, Inst Astron, Mexico City 04510, DF, Mexico. [Maiolino, R.] Cavendish Lab, Astrophys Grp, Cambridge CB3 OHE, England. RP Zappacosta, L (reprint author), INAF Osservatorio Astron Roma, Via Frascati 33, I-00040 Monte Porzio Catone, Italy. EM luca.zappacosta@oa-roma.inaf.it OI Nicastro, Fabrizio/0000-0002-6896-1364 NR 27 TC 8 Z9 8 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 2012 VL 753 IS 2 AR 137 DI 10.1088/0004-637X/753/2/137 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 967MR UT WOS:000305912700044 ER PT J AU Fletcher, RJ Orrock, JL Robertson, BA AF Fletcher, Robert J., Jr. Orrock, John L. Robertson, Bruce A. TI How the type of anthropogenic change alters the consequences of ecological traps SO PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES LA English DT Article DE attractive sink; evolutionary trap; habitat selection; maladaptation; Price equation; rapid evolution ID HABITAT SELECTION; UNDERVALUED RESOURCES; POPULATION-DYNAMICS; EVOLUTIONARY TRAPS; QUANTITATIVE TRAIT; CLIMATE-CHANGE; CONSERVATION; ENVIRONMENT; COVARIANCE; EXTINCTION AB Understanding altered ecological and evolutionary dynamics in novel environments is vital for predicting species responses to rapid environmental change. One fundamental concept relevant to such dynamics is the ecological trap, which arises from rapid anthropogenic change and can facilitate extinction. Ecological traps occur when formerly adaptive habitat preferences become maladaptive because the cues individuals preferentially use in selecting habitats lead to lower fitness than other alternatives. While it has been emphasized that traps can arise from different types of anthropogenic change, the resulting consequences of these different types of traps remain unknown. Using a novel model framework that builds upon the Price equation from evolutionary genetics, we provide the first analysis that contrasts the ecological and evolutionary consequences of ecological traps arising from two general types of perturbations known to trigger traps. Our model suggests that traps arising from degradation of existing habitats are more likely to facilitate extinction than those arising from the addition of novel trap habitat. Importantly, our framework reveals the mechanisms of these outcomes and the substantial scope for persistence via rapid evolution that may buffer many populations from extinction, helping to resolve the paradox of continued persistence of many species in dramatically altered landscapes. C1 [Fletcher, Robert J., Jr.] Univ Florida, Dept Wildlife Ecol & Conservat, Gainesville, FL 32611 USA. [Orrock, John L.] Univ Wisconsin, Dept Zool, Madison, WI 53706 USA. [Robertson, Bruce A.] Smithsonian Conservat Biol Inst, Migratory Bird Ctr, Washington, DC 20008 USA. RP Fletcher, RJ (reprint author), Univ Florida, Dept Wildlife Ecol & Conservat, POB 110430,110 Newins Ziegler Hall, Gainesville, FL 32611 USA. EM robert.fletcher@ufl.edu OI Fletcher, Robert/0000-0003-1717-5707 FU USDA-NRI [2006-55101-17158]; PPL-Montana FX R.J.F. was supported by grants from the USDA-NRI (no. 2006-55101-17158) and PPL-Montana. M. Patten, C. W. Miller and anonymous reviewers provided valuable comments on previous versions of this manuscript, which improved the ideas presented here. NR 47 TC 28 Z9 28 U1 5 U2 95 PU ROYAL SOC PI LONDON PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND SN 0962-8452 EI 1471-2954 J9 P ROY SOC B-BIOL SCI JI Proc. R. Soc. B-Biol. Sci. PD JUL 7 PY 2012 VL 279 IS 1738 BP 2546 EP 2552 DI 10.1098/rspb.2012.0139 PG 7 WC Biology; Ecology; Evolutionary Biology SC Life Sciences & Biomedicine - Other Topics; Environmental Sciences & Ecology; Evolutionary Biology GA 947TF UT WOS:000304453000008 PM 22378802 ER PT J AU Barkley, MP Kurosu, TP Chance, K De Smedt, I Van Roozendael, M Arneth, A Hagberg, D Guenther, A AF Barkley, Michael P. Kurosu, Thomas P. Chance, Kelly De Smedt, Isabelle Van Roozendael, Michel Arneth, Almut Hagberg, Daniel Guenther, Alex TI Assessing sources of uncertainty in formaldehyde air mass factors over tropical South America: Implications for top-down isoprene emission estimates SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID OZONE MONITORING INSTRUMENT; RETRIEVAL; MODEL; PHOTOOXIDATION; SCIAMACHY; COLUMNS; SPACE; MEGAN; BAND; NM AB We use a nested-grid version of the GEOS-Chem chemistry transport model, constrained by isoprene emissions from the Model of Emissions of Gases and Aerosols from Nature (MEGAN), and the Lund-Potsdam-Jena General Ecosystem Simulator (LPJ-GUESS) bottom-up inventories, to evaluate the impact that surface isoprene emissions have on formaldehyde (HCHO) air-mass factors (AMFs) and vertical column densities (VCDs) over tropical South America during 2006, as observed by the Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY) and Ozone Monitoring Instrument (OMI). Although the large-scale seasonal variability of monthly mean HCHO VCDs is typically unaffected by the choice of bottom-up inventory, large relative differences of up to +/- 45% in the HCHO VCD can occur for individual regions and months, but typically most VCD differences are of order +/- 20%. These relative changes are comparable to those produced by other sources of uncertainty in the AMF including aerosols and surface albedo, but less than those from clouds. In a sensitivity test, we find that top-down annual isoprene emissions inferred from SCIAMACHY and OMI HCHO vertical columns can vary by as much as +/- 30-50% for each instrument respectively, depending on the region studied and the a priori isoprene emissions used. Our analysis suggests that the influence of the a priori isoprene emissions on HCHO AMFs and VCDs is therefore non-negligible and must be carefully considered when inferring top-down isoprene emissions estimates over this, or potentially any other, region. C1 [Barkley, Michael P.] Univ Leicester, Dept Phys & Astron, EOS Grp, Leicester LE1 7RH, Leics, England. [Kurosu, Thomas P.; Chance, Kelly] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [De Smedt, Isabelle; Van Roozendael, Michel] Belgian Inst Space Aeron BIRA IASB, Brussels, Belgium. [Arneth, Almut; Hagberg, Daniel] Lund Univ, Dept Phys Geog & Ecosyst Anal, Geobiosphere Sci Ctr, Lund, Sweden. [Arneth, Almut] Karlsruhe Inst Technol, Inst Meteorol & Climate Res, Karlsruhe, Germany. [Guenther, Alex] Natl Ctr Atmospher Res, Boulder, CO 80307 USA. RP Barkley, MP (reprint author), Univ Leicester, Dept Phys & Astron, EOS Grp, Univ Rd, Leicester LE1 7RH, Leics, England. EM mpb14@le.ac.uk RI Arneth, Almut/B-2702-2013; Chem, GEOS/C-5595-2014; OI Chance, Kelly/0000-0002-7339-7577 FU Natural Environment Research Council [NE/GE013810/2]; Swedish Research Council Formas FX This work was supported by the Natural Environment Research Council (grant NE/GE013810/2). A. A. and D. H. acknowledge support from the Swedish Research Council Formas. NR 32 TC 13 Z9 13 U1 1 U2 32 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-897X J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD JUL 6 PY 2012 VL 117 AR D13304 DI 10.1029/2011JD016827 PG 13 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 971WX UT WOS:000306237700002 ER PT J AU Toth, LT Aronson, RB Vollmer, SV Hobbs, JW Urrego, DH Cheng, H Enochs, IC Combosch, DJ van Woesik, R Macintyre, IG AF Toth, Lauren T. Aronson, Richard B. Vollmer, Steven V. Hobbs, Jennifer W. Urrego, Dunia H. Cheng, Hai Enochs, Ian C. Combosch, David J. van Woesik, Robert Macintyre, Ian G. TI ENSO Drove 2500-Year Collapse of Eastern Pacific Coral Reefs SO SCIENCE LA English DT Article ID NINO-SOUTHERN-OSCILLATION; EL-NINO; CLIMATE-CHANGE; TROPICAL PACIFIC; OCEAN ACIDIFICATION; HOLOCENE; RECORD; GROWTH; SEA; DISTURBANCES AB Cores of coral reef frameworks along an upwelling gradient in Panama show that reef ecosystems in the tropical eastern Pacific collapsed for 2500 years, representing as much as 40% of their history, beginning about 4000 years ago. The principal cause of this millennial-scale hiatus in reef growth was increased variability of the El Nino-Southern Oscillation (ENSO) and its coupling with the Intertropical Convergence Zone. The hiatus was a Pacific-wide phenomenon with an underlying climatology similar to probable scenarios for the next century. Global climate change is probably driving eastern Pacific reefs toward another regional collapse. C1 [Toth, Lauren T.; Aronson, Richard B.; Hobbs, Jennifer W.; Urrego, Dunia H.; van Woesik, Robert] Florida Inst Technol, Dept Biol Sci, Melbourne, FL 32901 USA. [Aronson, Richard B.; Macintyre, Ian G.] Smithsonian Inst, Dept Paleobiol, Natl Museum Nat Hist, Washington, DC 20560 USA. [Vollmer, Steven V.; Combosch, David J.] Northeastern Univ, Ctr Marine Sci, Nahant, MA 01908 USA. [Urrego, Dunia H.] Univ Bordeaux 1, UMR CNRS EPOC 5805, F-33405 Talence, France. [Cheng, Hai] Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China. [Cheng, Hai] Univ Minnesota, Dept Geol & Geophys, Minneapolis, MN 55455 USA. [Enochs, Ian C.] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Cooperat Inst Marine & Atmospher Sci, Miami, FL 33149 USA. [Enochs, Ian C.] NOAA, Atlantic Oceanog & Meteorol Labs, Miami, FL 33149 USA. RP Aronson, RB (reprint author), Florida Inst Technol, Dept Biol Sci, 150 W Univ Blvd, Melbourne, FL 32901 USA. EM raronson@fit.edu RI Enochs, Ian/B-8051-2014; Chen, Hua/B-7664-2014; OI Enochs, Ian/0000-0002-8867-0361; Chen, Hua/0000-0002-9493-6939; Combosch, David/0000-0001-7004-7435 FU Smithsonian Institution; NSF; Florida Institute of Technology FX We thank M. Bush, A. Correa-Metrio, P. Glynn, H. Lessios, D. Manzello, W. Precht, and P. Reimer for advice and V. Brandtneris, L. Camilli, M. Dardeau, K. Hendrickson, A. Lam, A. Moesinger, R. Muthukrishnan, E. Ochoa, J. Reynolds, B. Valencia, and A. Velarde for assistance. Supported by the Smithsonian Institution, NSF, and the Florida Institute of Technology. This research was carried out under permits from the Republic of Panama. Data are available online in NOAA's Paleoclimatology database (www.ncdc.noaa.gov/paleo/). NR 34 TC 44 Z9 45 U1 1 U2 80 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD JUL 6 PY 2012 VL 337 IS 6090 BP 81 EP 84 DI 10.1126/science.1221168 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 969KC UT WOS:000306053100048 PM 22767927 ER PT J AU Dasmahapatra, KK Walters, JR Briscoe, AD Davey, JW Whibley, A Nadeau, NJ Zimin, AV Hughes, DST Ferguson, LC Martin, SH Salazar, C Lewis, JJ Adler, S Ahn, SJ Baker, DA Baxter, SW Chamberlain, NL Chauhan, R Counterman, BA Dalmay, T Gilbert, LE Gordon, K Heckel, DG Hines, HM Hoff, KJ Holland, PWH Jacquin-Joly, E Jiggins, FM Jones, RT Kapan, DD Kersey, P Lamas, G Lawson, D Mapleson, D Maroja, LS Martin, A Moxon, S Palmer, WJ Papa, R Papanicolaou, A Pauchet, Y Ray, DA Rosser, N Salzberg, SL Supple, MA Surridge, A Tenger-Trolander, A Vogel, H Wilkinson, PA Wilson, D Yorke, JA Yuan, FR Balmuth, AL Eland, C Gharbi, K Thomson, M Gibbs, RA Han, Y Jayaseelan, JC Kovar, C Mathew, T Muzny, DM Ongeri, F Pu, LL Qu, JX Thornton, RL Worley, KC Wu, YQ Linares, M Blaxter, ML Ffrench-Constant, RH Joron, M Kronforst, MR Mullen, SP Reed, RD Scherer, SE Richards, S Mallet, J McMillan, WO Jiggins, CD AF Dasmahapatra, Kanchon K. Walters, James R. Briscoe, Adriana D. Davey, John W. Whibley, Annabel Nadeau, Nicola J. Zimin, Aleksey V. Hughes, Daniel S. T. Ferguson, Laura C. Martin, Simon H. Salazar, Camilo Lewis, James J. Adler, Sebastian Ahn, Seung-Joon Baker, Dean A. Baxter, Simon W. Chamberlain, Nicola L. Chauhan, Ritika Counterman, Brian A. Dalmay, Tamas Gilbert, Lawrence E. Gordon, Karl Heckel, David G. Hines, Heather M. Hoff, Katharina J. Holland, Peter W. H. Jacquin-Joly, Emmanuelle Jiggins, Francis M. Jones, Robert T. Kapan, Durrell D. Kersey, Paul Lamas, Gerardo Lawson, Daniel Mapleson, Daniel Maroja, Luana S. Martin, Arnaud Moxon, Simon Palmer, William J. Papa, Riccardo Papanicolaou, Alexie Pauchet, Yannick Ray, David A. Rosser, Neil Salzberg, Steven L. Supple, Megan A. Surridge, Alison Tenger-Trolander, Ayse Vogel, Heiko Wilkinson, Paul A. Wilson, Derek Yorke, James A. Yuan, Furong Balmuth, Alexi L. Eland, Cathlene Gharbi, Karim Thomson, Marian Gibbs, Richard A. Han, Yi Jayaseelan, Joy C. Kovar, Christie Mathew, Tittu Muzny, Donna M. Ongeri, Fiona Pu, Ling-Ling Qu, Jiaxin Thornton, Rebecca L. Worley, Kim C. Wu, Yuan-Qing Linares, Mauricio Blaxter, Mark L. Ffrench-Constant, Richard H. Joron, Mathieu Kronforst, Marcus R. Mullen, Sean P. Reed, Robert D. Scherer, Steven E. Richards, Stephen Mallet, James McMillan, W. Owen Jiggins, Chris D. CA Heliconius Genome Consortium TI Butterfly genome reveals promiscuous exchange of mimicry adaptations among species SO NATURE LA English DT Article ID HELICONIUS BUTTERFLIES; ADAPTIVE RADIATION; PATTERN MIMICRY; BOMBYX-MORI; GENE FLOW; EVOLUTION; HYBRIDIZATION; SYNTENY; LEPIDOPTERA; SPECIATION AB The evolutionary importance of hybridization and introgression has long been debated(1). Hybrids are usually rare and unfit, but even infrequent hybridization can aid adaptation by transferring beneficial traits between species. Here we use genomic tools to investigate introgression in Heliconius, a rapidly radiating genus of neotropical butterflies widely used in studies of ecology, behaviour, mimicry and speciation(2-5). We sequenced the genome of Heliconius melpomene and compared it with other taxa to investigate chromosomal evolution in Lepidoptera and gene flow among multiple Heliconius species and races. Among 12,669 predicted genes, biologically important expansions of families of chemosensory and Hox genes are particularly noteworthy. Chromosomal organization has remained broadly conserved since the Cretaceous period, when butterflies split from the Bombyx (silkmoth) lineage. Using genomic resequencing, we show hybrid exchange of genes between three co-mimics, Heliconius melpomene, Heliconius timareta and Heliconius elevatus, especially at two genomic regions that control mimicry pattern. We infer that closely related Heliconius species exchange protective colour-pattern genes promiscuously, implying that hybridization has an important role in adaptive radiation. C1 [Dasmahapatra, Kanchon K.; Rosser, Neil; Mallet, James] UCL, Dept Genet Evolut & Environm, London WC1E 6BT, England. [Walters, James R.; Nadeau, Nicola J.; Martin, Simon H.; Salazar, Camilo; Baxter, Simon W.; Surridge, Alison; Jiggins, Chris D.] Univ Cambridge, Dept Zool, Cambridge CB2 3EJ, England. [Briscoe, Adriana D.; Lewis, James J.; Martin, Arnaud; Yuan, Furong; Reed, Robert D.] Univ Calif Irvine, Dept Ecol & Evolutionary Biol, Irvine, CA 92697 USA. [Davey, John W.; Blaxter, Mark L.] Univ Edinburgh, Inst Evolutionary Biol, Ashworth Labs, Edinburgh EH9 3JT, Midlothian, Scotland. [Whibley, Annabel; Jones, Robert T.; Joron, Mathieu] Museum Natl Hist Nat, CNRS UMR 7205, F-75005 Paris, France. [Zimin, Aleksey V.; Yorke, James A.] Univ Maryland, Inst Phys Sci & Technol, College Pk, MD 20742 USA. [Hughes, Daniel S. T.; Kersey, Paul; Lawson, Daniel; Wilson, Derek] European Bioinformat Inst, Hinxton CB10 1SD, England. [Ferguson, Laura C.; Holland, Peter W. H.] Univ Oxford, Dept Zool, Oxford OX1 3PS, England. [Salazar, Camilo; McMillan, W. Owen; Jiggins, Chris D.] Smithsonian Trop Res Inst, Panama City, Panama. [Adler, Sebastian; Hoff, Katharina J.] Ernst Moritz Arndt Univ Greifswald, Inst Math & Informat, D-17487 Greifswald, Germany. [Ahn, Seung-Joon; Heckel, David G.; Pauchet, Yannick; Vogel, Heiko] Max Planck Inst Chem Biol, D-07745 Jena, Germany. [Baker, Dean A.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England. [Chamberlain, Nicola L.; Tenger-Trolander, Ayse; Kronforst, Marcus R.] Harvard Univ, FAS Ctr Syst Biol, Cambridge, MA 02138 USA. [Chauhan, Ritika; Ffrench-Constant, Richard H.] Univ Exeter, Sch Biosci, Ctr Ecol & Conservat, Penryn TR10 9EZ, England. [Counterman, Brian A.] Mississippi State Univ, Dept Biol, Mississippi State, MS 39762 USA. [Dalmay, Tamas] Univ E Anglia, Sch Biol Sci, Norwich NR4 7TJ, Norfolk, England. [Gilbert, Lawrence E.] Univ Texas Austin, Sect Integrat Biol, Austin, TX 78712 USA. [Gilbert, Lawrence E.] Univ Texas Austin, Brackenridge Field Lab, Austin, TX 78712 USA. [Gordon, Karl; Papanicolaou, Alexie] CSIRO Ecosyst Sci, Black Mt Labs, Canberra, ACT 2601, Australia. [Hines, Heather M.] N Carolina State Univ, Dept Genet, Raleigh, NC 27695 USA. [Jacquin-Joly, Emmanuelle] Univ Paris 06, INRA, UMR A 1272, F-78026 Versailles, France. [Jiggins, Francis M.; Palmer, William J.] Univ Cambridge, Dept Genet, Cambridge CB2 3EH, England. [Kapan, Durrell D.] Calif Acad Sci, Dept Entomol, Ctr Comparat Genom, San Francisco, CA 94118 USA. [Kapan, Durrell D.] Univ Hawaii Manoa, Pacific Biosci Res Ctr, Ctr Conservat & Res Training, Honolulu, HI 96822 USA. [Lamas, Gerardo] Univ Nacl Mayor San Marcos, Museo Hist Nat, Lima 14, Peru. [Mapleson, Daniel; Maroja, Luana S.] Univ E Anglia, Sch Comp Sci, Norwich NR4 7TJ, Norfolk, England. [Maroja, Luana S.] Williams Coll, Dept Biol, Williamstown, MA 01267 USA. [Moxon, Simon] Yale Univ, Sch Med, Dept Genet, New Haven, CT 06520 USA. [Papa, Riccardo] Univ Puerto Rico, Dept Biol, Rio Piedras, PR 00931 USA. [Ray, David A.] Mississippi State Univ, Dept Biochem Mol Biol Entomol & Plant Pathol, Mississippi State, MS 39762 USA. [Ray, David A.] Mississippi State Univ, Inst Genom Biocomp & Biotechnol, Mississippi State, MS 39759 USA. [Salzberg, Steven L.] Johns Hopkins Univ, McKusick Nathans Inst Genet Med, Baltimore, MD 21205 USA. [Supple, Megan A.] N Carolina State Univ, Biomath Program, Raleigh, NC 27695 USA. [Wilkinson, Paul A.] Univ Bristol, Sch Biol Sci, Bristol BS8 1UG, Avon, England. [Balmuth, Alexi L.; Eland, Cathlene; Gharbi, Karim; Thomson, Marian; Blaxter, Mark L.] Univ Edinburgh, Ashworth Labs, Edinburgh EH9 3JT, Midlothian, Scotland. [Gibbs, Richard A.; Han, Yi; Jayaseelan, Joy C.; Kovar, Christie; Mathew, Tittu; Muzny, Donna M.; Ongeri, Fiona; Pu, Ling-Ling; Qu, Jiaxin; Thornton, Rebecca L.; Worley, Kim C.; Wu, Yuan-Qing; Scherer, Steven E.; Richards, Stephen] Baylor Coll Med, Human GenomeSequencing Ctr, Houston, TX 77030 USA. [Linares, Mauricio] Univ Nacl Rosario, Fac Ciencias Nat & Matemat, Bogota, Colombia. [Linares, Mauricio] Univ Los Andes, Inst Genet, Bogota, Colombia. [Mullen, Sean P.] Boston Univ, Dept Biol, Boston, MA 02215 USA. [Mallet, James] Harvard Univ, Dept Organism & Evolutionary Biol, Cambridge, MA 02138 USA. RP Mallet, J (reprint author), UCL, Dept Genet Evolut & Environm, Gower St, London WC1E 6BT, England. EM jmallet@oeb.harvard.edu RI JAYASEELAN, JOY CHRISTINA/F-9824-2015; Blaxter, Mark/B-4113-2010; Linares, Mauricio/I-3509-2016; Salzberg, Steven/F-6162-2011; Gordon, Karl/A-1976-2008; Moxon, Simon/A-5385-2010; mallet, james/B-5114-2008; Briscoe, Adriana/E-8963-2010; GenePool, The/D-8812-2012; Joron, Mathieu/C-9178-2009; Papanicolaou, Alexie/A-1618-2011; Jiggins, Chris/B-9960-2008; Nadeau, Nicola/E-1149-2011; Davey, John/B-5075-2013; Gharbi, Karim/C-5771-2012; Salazar, camilo/A-1647-2010; Heckel, David/K-2138-2013 OI Lamas, Gerardo/0000-0002-3664-6730; Ahn, Seung-Joon/0000-0002-5980-106X; Jiggins, Francis Michael/0000-0001-7470-8157; Holland, Peter/0000-0003-1533-9376; Kersey, Paul/0000-0002-7054-800X; Pauchet, Yannick/0000-0002-2918-8946; Dasmahapatra, Kanchon Kumar/0000-0002-2840-7019; JAYASEELAN, JOY CHRISTINA/0000-0002-7759-0139; Blaxter, Mark/0000-0003-2861-949X; Linares, Mauricio/0000-0002-1021-0226; Salzberg, Steven/0000-0002-8859-7432; Gordon, Karl/0000-0002-4371-0454; ffrench-Constant, Richard/0000-0001-5385-9888; Lawson, Daniel/0000-0001-7765-983X; Davey, John/0000-0002-1017-9775; Mallet, James/0000-0002-3370-0367; Briscoe, Adriana/0000-0001-8514-4983; Joron, Mathieu/0000-0003-1043-4147; Papanicolaou, Alexie/0000-0002-3635-6848; Jiggins, Chris/0000-0002-7809-062X; Nadeau, Nicola/0000-0002-9319-921X; Gharbi, Karim/0000-0003-1092-4488; Salazar, camilo/0000-0001-9217-6588; Heckel, David/0000-0001-8991-2150 FU Leverhulme Trust; John Fell Fund; Christ Church College, Oxford; Royal Society; NSF; NIH; CNRS; ERC; Banco de la Republica; COLCIENCAS; BBSRC FX We thank the governments of Colombia, Peru and Panama for permission to collect the butterflies. Sequencing was funded by contributions from consortium members. We thank M. Abanto for assistance in raising the inbred line. Individual laboratories were funded by the Leverhulme Trust (C.D.J.), the John Fell Fund and Christ Church College, Oxford (L. C. F.), The Royal Society (M.J., C.D.J.), the NSF (W.O.M., M. R. K., R. D. R., S. M., A. D. B.), the NIH (M. R. K., S. L. S., J.A.Y.), the CNRS (M.J.), the ERC (M.J., P. W. H. H.), the Banco de la Republica and COLCIENCAS (M. L.) and the BBSRC (J.M., C.D.J., M.L.B. and R.H.f.-C.). NR 27 TC 371 Z9 468 U1 29 U2 382 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD JUL 5 PY 2012 VL 487 IS 7405 BP 94 EP 98 DI 10.1038/nature11041 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 968LM UT WOS:000305982900057 ER PT J AU Liertzer, M Feist, J Nagele, S Burgdorfer, J AF Liertzer, M. Feist, J. Nagele, S. Burgdoerfer, J. TI Multielectron Transitions Induced by Neutron Impact on Helium SO PHYSICAL REVIEW LETTERS LA English DT Article ID DOUBLE PHOTOIONIZATION; EXCITATION-IONIZATION; MULTIPLE IONIZATION; COMPTON-SCATTERING; CROSS-SECTIONS; PHOTON; ATOMS AB We explore excitation and ionization by neutron impact as a novel tool for the investigation of electron-electron correlations in helium. We present single-and double-ionization spectra calculated in accurate numerical ab initio simulations for incoming neutrons with kinetic energies of up to 150 keV. The resulting electron spectra are found to be fundamentally different from photoionization or charged particle impact due to the intrinsic many-body character of the interaction. In particular, doubly excited resonances that are strongly suppressed in electron or photon impact become prominent. The ratio of double to single ionization is found to differ significantly from those of photon and charged-particle impact. C1 [Liertzer, M.; Nagele, S.; Burgdoerfer, J.] Vienna Univ Technol, Inst Theoret Phys, A-1040 Vienna, Austria. [Feist, J.] Harvard Smithsonian Ctr Astrophys, ITAMP, Cambridge, MA 02138 USA. RP Liertzer, M (reprint author), Vienna Univ Technol, Inst Theoret Phys, A-1040 Vienna, Austria. EM matthias.liertzer@tuwien.ac.at RI Nagele, Stefan/E-6938-2011; Feist, Johannes/J-7394-2012 OI Nagele, Stefan/0000-0003-1213-0294; Feist, Johannes/0000-0002-7972-0646 FU FWF-Austria [SFB-041 VICOM, P23359-N16]; NSF; Vienna Science and Technology Fund (WWTF) [MA09-030]; TACC [TG-PHY090031] FX We thank B. deHarak for providing us with the data of the e--He scattering measurements. S. N. and J. B. acknowledge support by the FWF-Austria, SFB-041 VICOM, and P23359-N16. J. F. acknowledges support from the NSF through a grant to ITAMP. M. L. acknowledges funding by the Vienna Science and Technology Fund (WWTF) through Project No. MA09-030. The computational results have been achieved using the Vienna Scientific Cluster and NSF TeraGrid/XSEDE resources provided by NICS and TACC under Grant No. TG-PHY090031. NR 36 TC 4 Z9 4 U1 0 U2 13 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JUL 2 PY 2012 VL 109 IS 1 AR 013201 DI 10.1103/PhysRevLett.109.013201 PG 5 WC Physics, Multidisciplinary SC Physics GA 967GV UT WOS:000305895700004 PM 23031102 ER PT J AU Kabat, AR Hershler, R Gonzalez-Guillen, A AF Kabat, Alan R. Hershler, Robert Gonzalez-Guillen, Adrian TI Resolution of taxonomic problems associated with the complex publication history of the seminal Torre and Bartsch monograph on Cuban Urocoptidae (Gastropoda, Pulmonata) SO ZOOTAXA LA English DT Article DE Urocoptoidea; land snails; Caribbean; biodiversity; taxonomy; nomenclature ID CERION AB This paper clarifies the confusion relating to the publication of Carlos de la Torre & Paul Bartsch's taxonomic study of the Cuban Urocoptidae. This massive work, which described >500 new taxa, was completed in manuscript form in 1943, but was not published during the authors' lifetime. In 1972 Miguel Jaume and Alfredo de la Torre (a nephew of C. de la Torre) published a slightly modified version of a large portion of this manuscript in the Circulares del Museo y Biblioteca de Zoologa de la Habana, a mimeographed journal which is available for taxonomic purposes per ICZN Code Article 8. The 420 new taxa introduced in this paper were made available under the ICZN Code (even though many were differentiated only in identification keys) and should be attributed to C. de la Torre & Bartsch because the descriptions were copied from the 1943 manuscript and Jaume & A. de la Torre explicitly credited this work to the former two authors (per Article 50 of the 1964 edition of the ICZN Code). The 1972 paper does not delineate type material for most of the new species-group taxa; however the detailed information provided in the 1943 manuscript constitutes valid evidence of the type series per ICZN Code (1999) Article 72.2. The 1972 paper was republished by Jaume & A. de la Torre in 1976 in the Ciencias Biologicas of the Universidad de la Habana. In 1980 Jaume & A. de la Torre prepared a typescript describing the remaining new taxa from the 1943 manuscript, which was slated to be published in the Circulares; however we have not found any evidence that it was distributed or otherwise made available in a manner satisfying the ICZN Code criteria for availability. In 2008 Carolina de la Torre, grand-niece of C. de la Torre, published the entire 1943 manuscript in a book of more than 760 pages that was printed in Havana. The authorship of this book was credited to C. de la Torre & Bartsch. The book describes as new the taxa already treated in the 1972 paper as well as 130 additional taxa, which also should be attributed to C. de la Torre & Bartsch. We briefly discuss the disposition of the Cuban urocoptid material studied by C. de la Torre & Bartsch and the subsequent citations to their taxonomic study of this fauna. C1 [Hershler, Robert] Smithsonian Inst, Dept Invertebrate Zool, Washington, DC 20013 USA. [Kabat, Alan R.] Harvard Univ, Museum Comparat Zool, Cambridge, MA 02138 USA. RP Hershler, R (reprint author), Smithsonian Inst, Dept Invertebrate Zool, POB 37012, Washington, DC 20013 USA. EM alankabat@aol.com; hershlerr@si.edu; adrian.polymita@gmail.com NR 50 TC 0 Z9 0 U1 2 U2 3 PU MAGNOLIA PRESS PI AUCKLAND PA PO BOX 41383, AUCKLAND, ST LUKES 1030, NEW ZEALAND SN 1175-5326 EI 1175-5334 J9 ZOOTAXA JI Zootaxa PD JUL 2 PY 2012 IS 3362 BP 43 EP 53 PG 11 WC Zoology SC Zoology GA 967CB UT WOS:000305882600002 ER PT J AU Shurakov, A Seliverstov, S Kaurova, N Finkel, M Voronov, B Goltsman, G AF Shurakov, Alexander Seliverstov, Sergey Kaurova, Natalia Finkel, Matvey Voronov, Boris Goltsman, Gregory TI Input Bandwidth of Hot Electron Bolometer With Spiral Antenna SO IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY LA English DT Article DE Hot electron bolometer (HEB); terahertz (THz) region; ultra wideband antennas AB We report the results of our study of the input bandwidth of hot electron bolometers (HEB) embedded into the planar log-spiral antenna. The sensitive element is made of the ultrathin superconducting NbN film patterned as a bridge at the feed of the antenna. The contacts between the antenna and a sensitive element are made from in situ deposited gold (i.e., deposited over NbN film without breaking vacuum), which gives high quality contacts and makes the response of the HEB at higher frequencies less affected by the RF loss. An accurate experimental spectroscopic procedure is demonstrated that leads to the confirmation of the wide (similar to 8 THz) bandwidth in this antenna coupled device. C1 [Shurakov, Alexander; Kaurova, Natalia; Goltsman, Gregory] Moscow State Pedag Univ, Dept Phys & Informat Technol, Moscow 119435, Russia. [Shurakov, Alexander] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Seliverstov, Sergey] Moscow State Pedag Univ, Radio Phys Lab, Moscow 119435, Russia. [Finkel, Matvey] Moscow State Pedag Univ, Moscow 119435, Russia. [Voronov, Boris] Moscow State Pedag Univ, Proc Lab, Moscow 119435, Russia. RP Shurakov, A (reprint author), Moscow State Pedag Univ, Dept Phys & Informat Technol, Moscow 119435, Russia. EM matveyf@yahoo.com NR 13 TC 5 Z9 6 U1 0 U2 8 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 2156-342X J9 IEEE T THZ SCI TECHN JI IEEE Trans. Terahertz Sci. Technol. PD JUL PY 2012 VL 2 IS 4 BP 400 EP 405 DI 10.1109/TTHZ.2012.2194852 PG 6 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA 142AG UT WOS:000318767400006 ER PT J AU Clough, GW AF Clough, G. Wayne TI THE LATEST AND THE GREATEST SO SMITHSONIAN LA English DT Editorial Material C1 Smithsonian Inst, Washington, DC 20560 USA. RP Clough, GW (reprint author), Smithsonian Inst, Washington, DC 20560 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SMITHSONIAN ASSOC PI WASHINGTON PA 900 JEFFERSON DR, WASHINGTON, DC 20560 USA SN 0037-7333 J9 SMITHSONIAN JI Smithsonian PD JUL-AUG PY 2012 VL 43 IS 4 BP 8 EP 8 PG 1 WC Humanities, Multidisciplinary SC Arts & Humanities - Other Topics GA 126SP UT WOS:000317641800008 ER PT J AU Diogo, R Richmond, BG Wood, B AF Diogo, Rui Richmond, Brian G. Wood, Bernard TI Evolution and homologies of primate and modern human hand and forearm muscles, with notes on thumb movements and tool use SO JOURNAL OF HUMAN EVOLUTION LA English DT Article DE Phylogenetic analysis; Morphology; Extensor pollicis brevis; Flexor pollicis longus; Adductor pollicis accessorius ID PALMAR INTEROSSEOUS MUSCLE; SOFT-TISSUE ANATOMY; FORELIMB MUSCULATURE; FUNCTIONAL-ANATOMY; PHYLOGENY; ADAPTATIONS; MORPHOLOGY; TETRAPODS; MIOCENE; MYOLOGY AB In this paper, we explore how the results of a primate-wide higher-level phylogenetic analysis of muscle characters can improve our understanding of the evolution and homologies of the forearm and hand muscles of modern humans. Contrary to what is often suggested in the literature, none of the forearm and hand muscle structures usually present in modern humans are autapomorphic. All are found in one or more extant non-human primate taxa. What is unique is the particular combination of muscles. However, more muscles go to the thumb in modern humans than in almost all other primates, reinforcing the hypothesis that focal thumb movements probably played an important role in human evolution. What makes the modern human thumb myology special within the primate clade is not so much its intrinsic musculature but two extrinsic muscles, extensor pollicis brevis and flexor pollicis longus, that are otherwise only found in hylobatids. It is likely that these two forearm muscles play different functional roles in hylobatids and modern humans. In the former, the thumb is separated from elongated digits by a deep cleft and there is no pulp-to-pulp opposition, whereas modern humans exhibit powerful thumb flexion and greater manipulative abilities, such as those involved in the manufacture and use of tools. The functional and evolutionary significance of a third peculiar structure, the intrinsic hand structure that is often called the 'interosseous volaris primus of Henle' (and which we suggest is referred to as the musculus adductor pollicis accessorius) is still obscure. The presence of distinct contrahentes digitorum and intermetacarpales in adult chimpanzees is likely the result of prolonged or delayed development of the hand musculature of these apes. In relation to these structures, extant chimpanzees are more neotenic than modern humans. (c) 2012 Elsevier Ltd. All rights reserved. C1 [Diogo, Rui] Howard Univ, Coll Med, Dept Anat, Washington, DC 20059 USA. [Richmond, Brian G.; Wood, Bernard] George Washington Univ, Dept Anthropol, Ctr Adv Study Hominid Paleobiol, Washington, DC 20052 USA. [Richmond, Brian G.; Wood, Bernard] Smithsonian Inst, Natl Museum Nat Hist, Human Origins Program, Washington, DC 20560 USA. RP Diogo, R (reprint author), Howard Univ, Coll Med, Dept Anat, 520 W St NW, Washington, DC 20059 USA. EM rui.diogo@howard.edu OI Diogo, Rui/0000-0002-9008-1910 FU George Washington University (GW) Presidential Merit Fellowship; Howard University; GW University Professorship in Human Origins; GW Provost; GW Selective Excellence Program; National Science Foundation [BCS-0725122] FX We thank R. Walsh and F. Slaby (Department of Anatomy, George Washington University), R. Bernstein and S. McFarlin (Department of Anthropology, George Washington University), N. Rybczynski (Canadian Museum of Nature), H. Mays (Cincinnati Museum of Natural History), A. Aziz (Department of Anatomy, Howard University), F. Pastor (Department of Anatomy, University of Valladolid), A. Gorow, H. Fitch-Snyder and B. Rideout (San Diego Zoo) and J. Fritz and J. Murphy (Primate Foundation of Arizona) for kindly providing the non-primate and primate mammalian specimens dissected during this project. RD was supported by a George Washington University (GW) Presidential Merit Fellowship and by a Howard University start-up package. BW by the GW University Professorship in Human Origins, the GW Provost and the GW Selective Excellence Program, and BGR by the National Science Foundation (BCS-0725122). NR 132 TC 20 Z9 21 U1 11 U2 126 PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0047-2484 J9 J HUM EVOL JI J. Hum. Evol. PD JUL PY 2012 VL 63 IS 1 BP 64 EP 78 DI 10.1016/j.jhevol.2012.04.001 PG 15 WC Anthropology; Evolutionary Biology SC Anthropology; Evolutionary Biology GA 987NJ UT WOS:000307423900003 PM 22640954 ER PT J AU Garcia-Robledo, C Horvitz, CC AF Garcia-Robledo, Carlos Horvitz, Carol C. TI Parent-offspring conflicts, "optimal bad motherhood" and the "mother knows best" principles in insect herbivores colonizing novel host plants SO ECOLOGY AND EVOLUTION LA English DT Article DE Exotic plants; feeding preference; larval and adult survival; oviposition preference; parent and offspring performance ID ROLLED-LEAF BEETLES; HISPINE BEETLES; PHYTOPHAGOUS INSECTS; NATURAL ENEMIES; EVOLUTION; PERFORMANCE; PREFERENCE; CHRYSOMELIDAE; COMMUNITIES; GINGERS AB Specialization of insect herbivores to one or a few host plants stimulated the development of two hypotheses on how natural selection should shape oviposition preferences: The "mother knows best" principle suggests that females prefer to oviposit on hosts that increase offspring survival. The "optimal bad motherhood" principle predicts that females prefer to oviposit on hosts that increase their own longevity. In insects colonizing novel host plants, current theory predicts that initial preferences of insect herbivores should be maladaptive, leading to ecological traps. Ecological trap theory does not take into account the fact that insect lineages frequently switch hosts at both ecological and evolutionary time scales. Therefore, the behavior of insect herbivores facing novel hosts is also shaped by natural selection. Using a study system in which four Cephaloleia beetles are currently expanding their diets from native to exotic plants in the order Zingiberales, we determined if initial oviposition preferences are conservative, maladaptive, or follow the patterns predicted by the "mother knows best" or the "optimal badmotherhood" principles. Interactions with novel hosts generated parent-offspring conflicts. Larval survival was higher on native hosts. However, adult generally lived longer on novel hosts. In Cephaloleia beetles, oviposition preferences are usually associated with hosts that increase larval survival, female fecundity, and population growth. In most cases, Cephaloleia oviposition preferences follow the expectations of the "mothers knows best" principle. C1 [Garcia-Robledo, Carlos; Horvitz, Carol C.] Univ Miami, Dept Biol, Coral Gables, FL 33124 USA. RP Garcia-Robledo, C (reprint author), Smithsonian Inst, Natl Museum Nat Hist, Dept Bot, POB 37012, Washington, DC 20013 USA. EM garciac@si.edu FU J. McLamore Fellowship - University of Miami; OTS (Organization for Tropical Studies) - Donald and Beverly Stone; Christiane Fellowship; Christopher Tyson Fellowship; Smithsonian Postdoctoral Fellowship; National Geographic-Waitt Institute; Rubenstein Fellowship - Encyclopedia of Life to C. Garcia-Robledo; Cooper Fellowship, College of Arts and Sciences, University of Miami; National Institutes of Health, National Institute of Aging [P01 AG022500-01]; NSF [DEB-0614457] FX This research was funded by the J. McLamore Fellowship - University of Miami, the OTS (Organization for Tropical Studies) - Donald and Beverly Stone and the Christiane and Christopher Tyson Fellowships, the Smithsonian Postdoctoral Fellowship, a National Geographic-Waitt Institute grant and the Rubenstein Fellowship - Encyclopedia of Life to C. Garcia-Robledo and the Cooper Fellowship, College of Arts and Sciences, University of Miami, National Institutes of Health, National Institute of Aging P01 AG022500-01 and NSF DEB-0614457 grants to C. C. Horvitz. NR 38 TC 11 Z9 11 U1 2 U2 45 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 2045-7758 J9 ECOL EVOL JI Ecol. Evol. PD JUL PY 2012 VL 2 IS 7 BP 1446 EP 1457 DI 10.1002/ece3.267 PG 12 WC Ecology; Evolutionary Biology SC Environmental Sciences & Ecology; Evolutionary Biology GA 055WK UT WOS:000312448400011 PM 22957153 ER PT J AU Kroll, O Hershler, R Albrecht, C Terrazas, EM Apaza, R Fuentealba, C Wolff, C Wilke, T AF Kroll, Oliver Hershler, Robert Albrecht, Christian Terrazas, Edmundo M. Apaza, Roberto Fuentealba, Carmen Wolff, Christian Wilke, Thomas TI The endemic gastropod fauna of Lake Titicaca: correlation between molecular evolution and hydrographic history SO ECOLOGY AND EVOLUTION LA English DT Article DE Altiplano; Heleobia; molecular clock; phylogeography; species flock ID MITOCHONDRIAL SEQUENCE DIVERSITY; PHYLOGENETIC-RELATIONSHIPS; SPECIES FLOCK; HYDROLOGIC VARIATION; ANCIENT LAKES; CENTRAL ANDES; FRESH-WATER; ALTIPLANO; HYDROBIIDAE; RISSOOIDEA AB Lake Titicaca, situated in the Altiplano high plateau, is the only ancient lake in South America. This 2- to 3-My-old (where My ismillion years) water body has had a complex history that included at least five major hydrological phases during the Pleistocene. It is generally assumed that these physical events helped shape the evolutionary history of the lake's biota. Herein, we study an endemic species assemblage in Lake Titicaca, composed of members of the microgastropod genus Heleobia, to determine whether the lake has functioned as a reservoir of relic species or the site of local diversification, to evaluate congruence of the regional paleohydrology and the evolutionary history of this assemblage, and to assess whether the geographic distributions of endemic lineages are hierarchical. Our phylogenetic analyses indicate that the Titicaca/Altiplano Heleobia fauna (together with few extralimital taxa) forms a species flock. A molecular clock analysis suggests that the most recent common ancestor (MRCAs) of the Altiplano taxa evolved 0.53 (0.28-0.80) My ago and the MRCAs of the Altiplano taxa and their extralimital sister group 0.92 (0.46-1.52) My ago. The endemic species of Lake Titicaca are younger than the lake itself, implying primarily intralacustrine speciation. Moreover, the timing of evolutionary branching events and the ages of two precursors of Lake Titicaca, lakes Cabana and Ballivian, is congruent. Although Lake Titicaca appears to have been the principal site of speciation for the regional Heleobia fauna, the contemporary spatial patterns of endemism have been masked by immigration and/or emigration events of local riverine taxa, which we attribute to the unstable hydrographic history of the Altiplano. Thus, a hierarchical distribution of endemism is not evident, but instead there is a single genetic break between two regional clades. We also discuss our findings in relation to studies of other regional biota and suggest that salinity tolerance was the most likely limiting factor in the evolution of Altiplano species flocks. C1 [Kroll, Oliver; Albrecht, Christian; Wolff, Christian; Wilke, Thomas] Univ Giessen, Dept Anim Ecol & Systemat, D-35392 Giessen, Germany. [Hershler, Robert] Smithsonian Inst, Natl Museum Nat Hist, Washington, DC 20560 USA. [Terrazas, Edmundo M.] Univ Nacl Altiplano, Fac Ciencias Biol, Puno, Peru. [Apaza, Roberto] Univ Nacl Mayor San Marcos, Inst Ecol, La Paz, Bolivia. [Fuentealba, Carmen] Univ Concepcion, Dept Zool, Concepcion, Chile. RP Wilke, T (reprint author), Univ Giessen, Dept Anim Ecol & Systemat, Heinrich Buff Ring 26-32 IFZ, D-35392 Giessen, Germany. EM tom.wilke@allzool.bio.uni-giessen.de RI Wilke, Thomas/G-1517-2012 OI Wilke, Thomas/0000-0001-8263-7758 FU DAAD Center of Excellence in Marine Sciences (CEMarin) in Santa Marta, Colombia; Deutsche Forschungsgemeinschaft (DFG) [WI 1902/8-1, AL 1076/3-1] FX We would like to thank D. Aranibar and all employees of the Reserva Nacional del Titicaca (RNT) for their hospitality and support. We are very grateful to M. Bodon, U. Bossneck, S. Cianfanelli, G. M. Davis, A. Falniowski, C. Gamarra, H. Girardi, K. Gonzales, E. Gutierrez, J. Heller, E. Loro, W. Maldonado, E. Miranda, I. Niero, D. Pineda, M. Szarowska, and B. Werding for providing valuable materials and for supporting our fieldwork. We also thank S. Nachtigall for her help with the DNA work as well as R. Schultheiss, M. Haase, and an anonymous referee for their critical comments on a previous version of this paper. H.-P. Liu kindly provided two unpublished Heleobia sequences for this study. This study was inspired by the Diploma thesis of O. Kroll, supervised by S. Richter. Partial support for the study came from the DAAD Center of Excellence in Marine Sciences (CEMarin) in Santa Marta, Colombia and from the Deutsche Forschungsgemeinschaft (DFG) grants WI 1902/8-1 and AL 1076/3-1. NR 71 TC 16 Z9 16 U1 1 U2 23 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 2045-7758 J9 ECOL EVOL JI Ecol. Evol. PD JUL PY 2012 VL 2 IS 7 BP 1517 EP 1530 DI 10.1002/ece3.280 PG 14 WC Ecology; Evolutionary Biology SC Environmental Sciences & Ecology; Evolutionary Biology GA 055WK UT WOS:000312448400017 PM 22957159 ER PT J AU Attasopa, K Warrit, N AF Attasopa, Korrawat Warrit, Natapot TI Redescription, subgeneric position and distribution of the Oriental burrowing bee, Amegilla fimbriata (Hymenoptera: Apidae: Anthophorini) SO PAN-PACIFIC ENTOMOLOGIST LA English DT Article DE Amegilla fimbriata; Amegilla; Glossamegilla; burrowing bees; Thailand ID CHLOROCYANEA; POLLINATION AB Amegilla fimbriata (Smith, 1897) (Hymenoptera; Apidae; Anthophorini) is redescribed with detailed study of the male genitalia. Ambiguity concerning the subgeneric placement of A. fimbriata in the subgenus Glossamegilla is discussed. Lectotype of A. fimbriata is designated. C1 [Attasopa, Korrawat; Warrit, Natapot] Chulalongkorn Univ, Fac Sci, Dept Biol, Ctr Excellence Entomol, Bangkok 10330, Thailand. [Warrit, Natapot] Smithsonian Inst, Natl Museum Nat Hist, Dept Entomol, Washington, DC 20013 USA. RP Warrit, N (reprint author), Chulalongkorn Univ, Fac Sci, Dept Biol, Ctr Excellence Entomol, Bangkok 10330, Thailand. EM Natapot.W@chula.ac.th FU Chulalongkorn University; Thailand Research Fund (TRF) [MRG5380139] FX We would like to thank two anonymous reviewers and Dr. Charles D. Michener for providing insights and invaluable comments on the manuscript; Dr. Deborah R. Smith for help editing the manuscript, the staff at the Center of Excellence in Entomology, Chulalongkorn University, particularly Sureerat Deowanish and Chariya Lekprayoon, for providing research facilities; Yuvarin Boontop of the Ministry of Agriculture (MA) for her courtesy during our visit to the MA National Insect Collection. The authors also thank the following collection managers and their institutions for kindly providing access to specimens used in this study: Chariya Lekprayoon (NHMCU), Prachaval Sukumalanand and Sawai Buranapanichpan (ACMU), Araya Jatisatienr (SCMU), Virot Khipsuwon (KKU), and David G. Notton (NHM). The photographic equipment was provided by the Animal Systematics Research Unit (ASRU), Department of Biology, Chulalongkorn University, through assistance of Somsak Panha, Chirasak Sutcharit, and Natdanai Likhitrakarn. This study was funded by Grants for the Development of New Faculty Staff, Chulalongkorn University, and in part by the Thailand Research Fund (TRF# MRG5380139) to NW. NR 19 TC 0 Z9 0 U1 1 U2 2 PU PACIFIC COAST ENTOMOL SOC PI SAN FRANCISCO PA C/O CALIFORNIA ACADEMY SCIENCES, 875 HOWARD STREET, SAN FRANCISCO, CA 94103-3009 USA SN 0031-0603 J9 PAN-PAC ENTOMOL JI Pan-Pacific Entomol. PD JUL PY 2012 VL 88 IS 3 BP 281 EP 291 PG 11 WC Entomology SC Entomology GA 053NA UT WOS:000312278500001 ER PT J AU Flint, OS AF Flint, Oliver S., Jr. TI Two new Oecetis of the reticulata group from Micronesia (Trichoptera: Leptoceridae) SO PAN-PACIFIC ENTOMOLOGIST LA English DT Article DE Trichoptera; Leptoceridae; Oecetis; Caddisfly; Pohnpei; Micronesia; new species AB Two new species of the reticulata group of the widespread genus Oecetis McLachlan 1877 are described front Pohnpei. Oecetis mackenziei, sp. nov., and O. squamifera, sp. nov., are the first species described from Micronesia after the poorly known Triaenodes esakii Tsuda 1941, known from Koror and Babelthuap, Palau. Figures are presented of the male and female genitalia of O mackenziei, and the male only of O. squamifera: wing photographs of males of both species are included. C1 Smithsonian Inst, Natl Museum Nat Hist, Dept Entomol, Washington, DC 20013 USA. RP Flint, OS (reprint author), Smithsonian Inst, Natl Museum Nat Hist, Dept Entomol, MRC 169, Washington, DC 20013 USA. EM flinto@si.edu NR 5 TC 0 Z9 0 U1 0 U2 2 PU PACIFIC COAST ENTOMOL SOC PI SAN FRANCISCO PA C/O CALIFORNIA ACADEMY SCIENCES, 875 HOWARD STREET, SAN FRANCISCO, CA 94103-3009 USA SN 0031-0603 J9 PAN-PAC ENTOMOL JI Pan-Pacific Entomol. PD JUL PY 2012 VL 88 IS 3 BP 299 EP 303 PG 5 WC Entomology SC Entomology GA 053NA UT WOS:000312278500003 ER PT J AU Zahniser, JN McKamey, SH Dmitriev, DA AF Zahniser, J. N. McKamey, S. H. Dmitriev, D. A. TI Nomenclatural changes and notes in the Deltocephalinae (Hemiptera: Cicadellidae) SO PAN-PACIFIC ENTOMOLOGIST LA English DT Article DE Membracoidea; homonym; synonym; nomen novum; nomen protectum; nomen oblitum; new name; Drabescus; Osbornellus ID GENUS; LEAFHOPPERS; NAMES AB Nomenclatural changes and clarifications are provided for names in the leafhopper subfamily Deltocephalinae. The replacement names Cicadula vilbastei nom. nov., Eutettix harlani nom. nov.. Macrosteles raoi nom. nov., Maiestas chalami nom. nov., Maiestas viraktamathi nom. nov., Opsius emeljanovi nom. nov.. Paradorydium naudei nom. nov., Penthimia alba nom. nov., Penthimia evansi nom. nov., and Peuthimia walker nom. nov. are given for species-group homonyms. Four new synonyms are recognized for previous replacement names that are no longer valid. The status of Acinopterus angulatus Lawson nomen protectum is discussed. Paramacrosteles Dai, Li & Chen status reinstated is reinstated as valid on taxonomic grounds. Priority is clarified for two species of Deltocephalinae, five new combinations in Balclutha Kirkaldy are given, and two original spellings are fixed. C1 [Zahniser, J. N.; Dmitriev, D. A.] Univ Illinois, Prairie Res Inst, Illinois Nat Hist Survey, Champaign, IL 61820 USA. [McKamey, S. H.] USDA ARS, Systemat Entomol Lab, Natl Museum Nat Hist, Smithsonian Inst, Washington, DC 20013 USA. RP Zahniser, JN (reprint author), Univ Illinois, Prairie Res Inst, Illinois Nat Hist Survey, 1816 S Oak St, Champaign, IL 61820 USA. EM zahniser@illinois.edu; stuart.mckamey@ars.usda.gov; dmitriev@inhs.illinois.edu NR 35 TC 1 Z9 1 U1 0 U2 2 PU PACIFIC COAST ENTOMOL SOC PI SAN FRANCISCO PA C/O CALIFORNIA ACADEMY SCIENCES, 875 HOWARD STREET, SAN FRANCISCO, CA 94103-3009 USA SN 0031-0603 EI 2162-0237 J9 PAN-PAC ENTOMOL JI Pan-Pacific Entomol. PD JUL PY 2012 VL 88 IS 3 BP 356 EP 364 PG 9 WC Entomology SC Entomology GA 053NA UT WOS:000312278500009 ER PT J AU Ballen, GA Vari, RP AF Ballen, Gustavo A. Vari, Richard P. TI Review of the Andean armored catfishes of the genus Dolichancistrus Isbrucker (Siluriformes: Loricariidae) SO NEOTROPICAL ICHTHYOLOGY LA English DT Review DE Andes; Chaetostoma group; Chaetostomus setosus; Northwestern South America ID SUCKERMOUTH; VENEZUELA; HYPOSTOMINAE; RIVER AB The loricariid catfish genus Dolichancistrus is reviewed and four species recognized. Species of Dolichancistrus are distinguished from each other by the degree of development of the pectoral-fin spine, the form of the distal margin of the pelvic fin, the relative size and form of the cheek plates, the pattern of odontodes along the margin of the snout, the presence versus absence of a buccal papilla at the premaxillary symphysis, and the relative lengths of the anal- versus pelvic-spines. Dolichancistrus atratoensis is known from the rio Atrato system and the rio Cubarrado on the Pacific versant of Colombia; D. carnegiei occurs in the eastern rio Magdalena basin in the departments of Boyaca and Santander, Colombia; D. cobrensis inhabits southern tributaries of the Lago Maracaibo basin in Colombia and Venezuela along with some highland rivers of the Cordillera de Merida in Venezuela draining into the rio Orinoco system; and D. fuesslii is known from the Andean piedmont portions of the rio Meta basin in the western rio Orinoco system. Pseudancistrus pediculatus is considered a junior synonym of Ancistrus fuesslii. Chaetostomus setosus previously assigned to Dolichancistrus, was found to lack features characteristic of its putative congeners and is rather more closely related to other members of Chaetostoma group. Consequently, the species is herein considered as incertae sedis within that group. Dolichancistrus is diagnosed, a key is provided to the members of the genus, and diagnoses and redescriptions are provided for all of the recognized species. C1 [Ballen, Gustavo A.] Univ Nacl Colombia, Grp Cladist Profunda & Biogeog Hist, Inst Ciencias Nat, Bogota, Colombia. [Vari, Richard P.] Smithsonian Inst, Div Fishes, Dept Vertebrate Zool, Natl Museum Nat Hist, Washington, DC 20013 USA. RP Ballen, GA (reprint author), Univ Nacl Colombia, Grp Cladist Profunda & Biogeog Hist, Inst Ciencias Nat, Apartado Aereo 7495, Bogota, Colombia. EM gaballench@gmail.com; varir@si.edu FU Office of the Associate Director of Research; Robert H. Gibbs Memorial Fund at the National Museum of Natural History, Smithsonian Institution FX Research associated with this project was supported by the Office of the Associate Director of Research and the Robert H. Gibbs Memorial Fund at the National Museum of Natural History, Smithsonian Institution. We thank Mark Sabaj Perez and John Lundberg (ANSP), Jonathan Armbruster and David Werneke (AUM), James Maclaine (BMNH), Carlos Ardila (CAR), David Catania (CAS), Luz Fernanda Jimenez (CIUA), Francisco Villa (CZUT-IC), Mary Anne Rogers (FMNH), Claudia Medina (IAvH-P), J. Ivan Mojica (ICNMHN), Otto Castillo (MCNG), Brother Jose Espitia (MLS), Ernst Mikschi and Helmut Wellendorf (NMW), Sven Kullander (NRM), and Sandra Raredon (USNM) for the loan of specimens and other assistance. Gonzalo Andrade and Julio Betancur (ICNMHN) provided access to photographic equipment and Paola Trivino and Miguel Rodriguez provided assistance during photographic sessions. T. Britt Griswold prepared Figure 4. John D. Lynch (ICNMHN) is especially acknowledged for providing workspace and access to equipment and library facilities in addition to invaluable advice over the years to GAB. The paper benefitted from the comments of Carl J. Ferraris Jr., John D. Lynch, and Donald C. Taphorn. NR 56 TC 5 Z9 5 U1 1 U2 8 PU SOC BRASILEIRA ICTIOLOGIA PI SAO PAULO PA UNIV SAO PAULO, DEPT FISIOLOGIA-IB, RUA DO MATAO, TRAVESSA 14 N 321, SAO PAULO, SP 05508-900, BRAZIL SN 1679-6225 J9 NEOTROP ICHTHYOL JI Neotrop. Ichthyol. PD JUL-SEP PY 2012 VL 10 IS 3 BP 499 EP 518 PG 20 WC Zoology SC Zoology GA 022HZ UT WOS:000309950200003 ER PT J AU Bogan, S Sidlauskas, B Vari, RP Agnolin, F AF Bogan, Sergio Sidlauskas, Brian Vari, Richard P. Agnolin, Federico TI Arrhinolemur scalabrinii Ameghino, 1898, of the late Miocene - a taxonomic journey from the Mammalia to the Anostomidae (Ostariophysi: Characiformes) SO NEOTROPICAL ICHTHYOLOGY LA English DT Article DE Argentina; fossil; Leporinus; Osteology; Phylogeny ID TELEOSTEI; BASIN AB The fossil species Arrhinolemur scalabrinii, which was described from late Miocene deposits of Entre Rios, Argentina, is reevaluated. Whereas the species was originally placed in the Primates (Mammalia) and later made the unique member of the order Arrhinolemuroidea within the Mammalia, our analysis indicates that the specimen is rather a fish of the genus Leporinus, family Anostomidae (Characiformes). The species is redescribed, and the characters that support its new generic assignment are discussed. C1 [Bogan, Sergio; Agnolin, Federico] Univ Maimonides, Fdn Hist Nat Felix Azara, Area Paleontol, Dept Ciencias Nat & Antropol, Buenos Aires, DF, Argentina. [Sidlauskas, Brian] Oregon State Univ, Dept Fisheries & Wildlife, Corvallis, OR 97331 USA. [Sidlauskas, Brian; Vari, Richard P.] Smithsonian Inst, Natl Museum Nat Hist, Dept Vertebrate Zool, Washington, DC 20013 USA. [Agnolin, Federico] Museo Argentino Ciencias Nat Bernardino Rivadavia, Lab Anat Comparada & Evoluc Vertebrados, Buenos Aires, DF, Argentina. RP Bogan, S (reprint author), Univ Maimonides, Fdn Hist Nat Felix Azara, Area Paleontol, Dept Ciencias Nat & Antropol, CEBBAD Hidalgo 775 Piso 7 C1405BDB, Buenos Aires, DF, Argentina. EM sergiobogan@yahoo.com.ar; brian.sidlauskas@oregonstate.edu; varir@si.edu OI Sidlauskas, Brian/0000-0003-0597-4085 FU Adrian Giacchino (FHNFA) FX We thank Fernando Novas for allowing us to study the material, and Mario Sevilla and Sebastian Suarez for their help with tomographic images taken at Maimonides University. Comments from Jose Birindelli (MZUSP) and an anonymous reviewer helped to improve the manuscript. Adrian Giacchino (FHNFA) kindly provided logistic and financial support. NR 20 TC 4 Z9 4 U1 0 U2 3 PU SOC BRASILEIRA ICTIOLOGIA PI SAO PAULO PA UNIV SAO PAULO, DEPT FISIOLOGIA-IB, RUA DO MATAO, TRAVESSA 14 N 321, SAO PAULO, SP 05508-900, BRAZIL SN 1679-6225 J9 NEOTROP ICHTHYOL JI Neotrop. Ichthyol. PD JUL-SEP PY 2012 VL 10 IS 3 BP 555 EP 560 PG 6 WC Zoology SC Zoology GA 022HZ UT WOS:000309950200008 ER PT J AU Vaslet, A France, C Baldwin, CC Feller, IC AF Vaslet, Amandine France, Christine Baldwin, Carole C. Feller, Ilka C. TI Dietary habits of juveniles of the Mayan cichlid, Cichlasoma urophthalmus, in mangrove ponds of an offshore islet in Belize, Central America SO NEOTROPICAL ICHTHYOLOGY LA English DT Article DE Caribbean; Cichlidae; Diet; Seagrass beds; Stable isotopes ID STABLE-ISOTOPE ANALYSES; AQUATIC FOOD WEBS; MIXING MODELS; FLORIDA; FISHES; CARBON; DELTA-C-13; ASSUMPTIONS; ECOSYSTEMS; DEPENDENCE AB Foraging habitats of juveniles of the Mayan cichlid, Cichlasoma urophthalmus (Gunther, 1862), were investigated in two mangrove ponds located in Twin Cays offshore islet in Belize: Sink Hole pond (SH) and Hidden Lake pond (HL). Sink Hole pond is a semiclosed body of water, whereas Hidden Lake pond is connected by a channel to adjacent seagrass beds that surround the islet. Gut contents of 21 juvenile C. urophthalmus (9.8-13.2 cm total length) were analyzed, and five prey taxa were identified. In both mangrove ponds, C. urophthalmus were opportunistic carnivores and consumed primarily crustaceans. Plant material and detritus present in gut contents were most likely ingested incidentally when the fish foraged on small invertebrates. Carbon isotopic values of fish specimens from the two ponds were similar (mean +/- SD of -19.2 +/- 0.4 parts per thousand in SH and -19.4 +/- 0.4 parts per thousand in HL), and were close to those of mangrove prey (mean +/- SD = -20.2 +/- 1.5 parts per thousand), suggesting that this fish species forages in this habitat. Mixing models showed a higher contribution of mangrove food sources to the fish diet than seagrass food sources. This study reveals that young Mayan cichlids, inhabiting two Belize mangrove ponds, are generalists and opportunistic carnivores that forage on mangrove food sources and do not appear to move to adjacent seagrass beds to complement their diets. Understanding trophic linkages between aquatic consumers and food resources may contribute to better management of threatened coastal ecosystems. C1 [Vaslet, Amandine] Smithsonian Marine Stn Ft Pierce, Ft Pierce, FL 34949 USA. [France, Christine] Smithsonian Museum Conservat Inst, Suitland, MD 20746 USA. [Baldwin, Carole C.] Smithsonian Inst, Natl Museum Nat Hist, Washington, DC 20013 USA. [Feller, Ilka C.] Smithsonian Environm Res Ctr, Edgewater, MD 21037 USA. RP Vaslet, A (reprint author), Smithsonian Marine Stn Ft Pierce, 701 Seaway Dr, Ft Pierce, FL 34949 USA. EM amandine.vaslet@gmail.com OI Feller, Ilka/0000-0002-6391-1608 FU SMSFP Postdoctoral Fellowship; Smithsonian's Caribbean Coral Reef Ecosystems Program [929] FX The authors thank Valerie Paul, director of Smithsonian Marine Station at Fort Pierce (SMSFP), and all the staff of SMSFP for their assistance and logistic support in the field. The authors are grateful to Zach Foltz, Woody Lee from SMSFP for their help in field collections. We thank the Belize Fisheries Department for permission to collect in mangroves. This research was funded by SMSFP Postdoctoral Fellowship to Amandine Vas let. This paper is contribution number 889 from SMSFP and contribution number 929 from Smithsonian's Caribbean Coral Reef Ecosystems Program. NR 42 TC 3 Z9 3 U1 0 U2 22 PU SOC BRASILEIRA ICTIOLOGIA PI SAO PAULO PA UNIV SAO PAULO, DEPT FISIOLOGIA-IB, RUA DO MATAO, TRAVESSA 14 N 321, SAO PAULO, SP 05508-900, BRAZIL SN 1679-6225 J9 NEOTROP ICHTHYOL JI Neotrop. Ichthyol. PD JUL-SEP PY 2012 VL 10 IS 3 BP 667 EP 674 PG 8 WC Zoology SC Zoology GA 022HZ UT WOS:000309950200021 ER PT J AU Dahl, C Kiatik, I Baisen, I Bronikowski, E Fleischer, RC Rotzel, NC Lock, J Novotny, V Narayan, E Herol, JM AF Dahl, Chris Kiatik, Ismale Baisen, Ismale Bronikowski, Ed Fleischer, Robert C. Rotzel, Nancy C. Lock, Justin Novotny, Vojtech Narayan, Edward Herol, Jean-Marc TI Batrachochytrium dendrobatidis not found in rainforest frogs along an altitudinal gradient of Papua New Guinea SO HERPETOLOGICAL JOURNAL LA English DT Article DE altitude; amphibians; Batrachochytrium; dendrobatidis; chytridiomycosis; Papua New Guinea ID TIME TAQMAN PCR; AMPHIBIAN CHYTRIDIOMYCOSIS; WILD FROGS; DECLINES; DISEASE; BIODIVERSITY; AUSTRALIA AB Batrachochytrium dendrobatidis (Bd) is a fungal pathogen often responsible for amphibian declines worldwide. We report here survey on Bd in Papua New Guinea (PNG). The survey for Bd was conducted along a rainforest altitudinal gradient from Madang (50 m a.s.l.) to Mt. Wilhelm (3700 m a.s.l.). We swabbed 249 frogs of 63 native species at nine sites to quantify the number of Bd zoospore equivalents using real-time Syber Green Polymerase Chain Reaction (qPCR). We found no evidence for Bd. The lack of Bd may be due to 1) hot climate all year round inhibiting the spread of Bd in the entire lowland areas of PNG, 2) low number of non-native amphibian introductions to PNG such as Litho bales catesbeianus or Xenopus spp. or 3) the lack of invasive introductions by humans due to geographic isolation. While it is difficult to discern between these hypotheses, an effective quarantine should be devised to protect PNG from future disease outbreak. International assistance is needed in conservation education and research to assist the local scientists in monitoring and protecting these rich fauna from future Bd outbreaks. C1 [Dahl, Chris; Narayan, Edward; Herol, Jean-Marc] Griffith Sch Environm, Environm Futures Ctr, Nathan, Qld, Australia. [Dahl, Chris; Kiatik, Ismale; Baisen, Ismale] New Guinea Binatang Res Ctr, Madang, Papua N Guinea. [Bronikowski, Ed] Smithsonian Inst, Washington, DC 20560 USA. [Novotny, Vojtech] Univ S Bohemia, Ctr Biol, Czech Acad Sci, Ceske Budejovice, Czech Republic. [Novotny, Vojtech] Univ S Bohemia, Fac Sci, Ceske Budejovice, Czech Republic. [Fleischer, Robert C.; Rotzel, Nancy C.; Lock, Justin] Smithsonian Conservat Biol Inst, Ctr Conservat & Evolutionary Genet, Washington, DC USA. RP Dahl, C (reprint author), Griffith Univ, Sch Environm, Environm Futures Ctr, Gold Coast Campus, Nathan, Qld 4222, Australia. EM c.dahl@griffith.edu.au RI Novotny, Vojtech/G-9434-2014; Narayan, Edward/E-8238-2016 OI Novotny, Vojtech/0000-0001-7918-8023; Narayan, Edward/0000-0003-2719-0900 FU Association of Zoos and Aquariums; Conservation Endowment Fund [08-857]; Christensen Fund [2009-2729546]; PNG Mama Graun Conservation Trust Fund [PC 10-3 -010] FX The study was funded by the Association of Zoos and Aquariums; Conservation Endowment Fund No. 08-857, The Christensen Fund (2009-2729546) and PNG Mama Graun Conservation Trust Fund (PC 10-3 -010). We thank Scott Miller, Lauren He Igen for advice, Phil Shearman and Jane Bryan for remote sensing data and the altitude study map on Fig. 1, the New Guinea Binatang Research Center staff for logistical support, the Bundi-Mt. Wilhelm landowners, and the field assistants for the field work. Jim Murphy also commented on our manuscript. NR 31 TC 3 Z9 3 U1 0 U2 7 PU BRITISH HERPETOL SOC PI LONDON PA C/O ZOOL SOC LONDON REGENTS PARK, LONDON NW1 4RY, ENGLAND SN 0268-0130 J9 HERPETOL J JI Herpetolog. J. PD JUL PY 2012 VL 22 IS 3 BP 183 EP 186 PG 4 WC Zoology SC Zoology GA 021NZ UT WOS:000309893600008 ER PT J AU Ferraz, G AF Ferraz, Goncalo TI Twelve Guidelines for Biological Sampling in Environmental Licensing Studies SO NATUREZA & CONSERVACAO LA English DT Article DE Environmental Licensing; Sampling; Monitoring Protocols; Management ID PROGRESS; AMAZON AB Environmental licensing is a decision-making process that requires scientific information and has far-reaching political and economic consequences. Sound science leads to informed decisions; unfocused science leaves an information void that is easily filled by power struggles. In the last few years, Brazil has seen a lively debate between two alternative approaches to the science behind environmental licensing: one centers on detailed methodological prescription with broadly defined goals; the other builds on the precise definition of questions that focus the scientific work and allows case-by-case flexibility in methodological choices. This essay offers twelve guidelines for pursuing the second approach, formulated around the key questions of why, what, and how to sample. These guidelines illustrate how it is possible to set scientific standards of operation without tying the hands of practitioners to omnibus protocols that may serve the purpose of accumulating data but won't necessarily produce knowledge to inform rational licensing decisions. The guidelines are formulated in the context of Brazilian environmental licensing, but they should apply wherever a regulatory agency needs to elicit scientific answers to urgent environmental questions. C1 [Ferraz, Goncalo] Smithsonian Trop Res Inst, Inst Nacl Pesquisas Amazonia, Biol Dynam Forest Fragments Project, BR-69083000 Manaus, Amazonas, Brazil. [Ferraz, Goncalo] Smithsonian Trop Res Inst, Balboa, Panama. RP Ferraz, G (reprint author), Smithsonian Trop Res Inst, Inst Nacl Pesquisas Amazonia, Biol Dynam Forest Fragments Project, Av Andre Araujo 1753,CP 478, BR-69083000 Manaus, Amazonas, Brazil. EM ferrazg@si.edu NR 16 TC 4 Z9 5 U1 0 U2 6 PU ASSOC BRASILEIRA CIENCIA ECOLOGICA E CONSERVACAO PI RIO DE JANEIRO PA CAIXA POSTAL 68038, CIDADE UNIV, ILHA DO FUNDAO, RIO DE JANEIRO, RJ 00000, BRAZIL SN 1679-0073 EI 2178-3675 J9 NAT CONSERVACAO JI Nat. Conserv. PD JUL PY 2012 VL 10 IS 1 BP 20 EP 26 DI 10.4322/natcon.2012.004 PG 7 WC Biodiversity Conservation SC Biodiversity & Conservation GA 990KH UT WOS:000307628900004 ER PT J AU Ferrari, FD AF Ferrari, Frank D. TI ECDYSOZOANS, ARTICULATES, AND THE NEEDLE IN A HAYSTACK SO CRUSTACEANA LA English DT Article ID CLADE C1 Smithsonian Inst, Natl Museum Nat Hist, Dept Invertebrate Zool, Suitland, MD 20746 USA. RP Ferrari, FD (reprint author), Smithsonian Inst, Natl Museum Nat Hist, Dept Invertebrate Zool, MRC 534,4210 Silver Hill Rd, Suitland, MD 20746 USA. EM ferrarif@si.edu NR 13 TC 1 Z9 1 U1 0 U2 3 PU BRILL ACADEMIC PUBLISHERS PI LEIDEN PA PLANTIJNSTRAAT 2, P O BOX 9000, 2300 PA LEIDEN, NETHERLANDS SN 0011-216X J9 CRUSTACEANA JI Crustaceana PD JUL PY 2012 VL 85 IS 8 BP 1013 EP 1017 DI 10.1163/156854012X649531 PG 5 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA 986DM UT WOS:000307321100009 ER PT J AU Abreu, NM Stanek, GL Bullock, ES AF Abreu, N. M. Stanek, G. L. Bullock, E. S. TI EXOTIC MINERALS FOUND IN OPAQUE NODULES IN CR GRA 06100 SO METEORITICS & PLANETARY SCIENCE LA English DT Meeting Abstract CT 75th Annual Meeting of the Meteoritical-Society CY AUG 12-17, 2012 CL Cairns, AUSTRALIA SP Meteorit Soc, Australian Natl Univ, Australian Sci Instruments, Barringer Crater Co, Cameca, Australian Govt, Dept Ind, Innovat Sci, Res & Tertiary Educ, IMCA, Japan Aerosp Explorat Agcy, Lunar & Planetary Inst, NASA, Planetary Studies Fdn, ThermoFisher Sci C1 [Abreu, N. M.; Stanek, G. L.] Penn State Univ DuBois, Du Bois, PA USA. [Bullock, E. S.] Smithsonian Inst, Dept Mineral Sci, Washington, DC 20560 USA. EM abreu@psu.edu NR 3 TC 0 Z9 0 U1 0 U2 1 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1086-9379 J9 METEORIT PLANET SCI JI Meteorit. Planet. Sci. PD JUL PY 2012 VL 47 SU 1 SI SI BP A39 EP A39 PG 1 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 987AV UT WOS:000307389700006 ER PT J AU Corrigan, CM Lunning, NG AF Corrigan, C. M. Lunning, N. G. TI IDENTIFICATION OF IMPACT MELTED MATERIALS IN ORDINARY CHONDRITES SO METEORITICS & PLANETARY SCIENCE LA English DT Meeting Abstract CT 75th Annual Meeting of the Meteoritical-Society CY AUG 12-17, 2012 CL Cairns, AUSTRALIA SP Meteorit Soc, Australian Natl Univ, Australian Sci Instruments, Barringer Crater Co, Cameca, Australian Govt, Dept Ind, Innovat Sci, Res & Tertiary Educ, IMCA, Japan Aerosp Explorat Agcy, Lunar & Planetary Inst, NASA, Planetary Studies Fdn, ThermoFisher Sci C1 [Corrigan, C. M.] Smithsonian Inst, NMNH, Washington, DC 20560 USA. EM corriganc@si.edu NR 22 TC 0 Z9 0 U1 0 U2 1 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1086-9379 J9 METEORIT PLANET SCI JI Meteorit. Planet. Sci. PD JUL PY 2012 VL 47 SU 1 SI SI BP A109 EP A109 PG 1 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 987AV UT WOS:000307389700076 ER PT J AU Goreva, YS McCoy, TJ AF Goreva, Y. S. McCoy, T. J. TI USING TOF-SIMS FOR EVALUATION OF FLIGHT HARDWARE SO METEORITICS & PLANETARY SCIENCE LA English DT Meeting Abstract CT 75th Annual Meeting of the Meteoritical-Society CY AUG 12-17, 2012 CL Cairns, AUSTRALIA SP Meteorit Soc, Australian Natl Univ, Australian Sci Instruments, Barringer Crater Co, Cameca, Australian Govt, Dept Ind, Innovat Sci, Res & Tertiary Educ, IMCA, Japan Aerosp Explorat Agcy, Lunar & Planetary Inst, NASA, Planetary Studies Fdn, ThermoFisher Sci C1 [Goreva, Y. S.; McCoy, T. J.] Smithsonian Inst, Dept Mineral Sci, NMNH, Washington, DC 20560 USA. EM gorevay@si.edu NR 5 TC 0 Z9 0 U1 0 U2 1 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1086-9379 J9 METEORIT PLANET SCI JI Meteorit. Planet. Sci. PD JUL PY 2012 VL 47 SU 1 SI SI BP A158 EP A158 PG 1 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 987AV UT WOS:000307389700125 ER PT J AU Herd, CDK Zhou, Q Yin, Q Wu, F Li, X Li, QL McCoy, TJ AF Herd, C. D. K. Zhou, Q. Yin, Q. Wu, F. Li, X. Li, Q-L. McCoy, T. J. TI U-Pb Geochronology of Baddeleyite in Zagami by Gaussian Illumination Probe SIMS. SO METEORITICS & PLANETARY SCIENCE LA English DT Meeting Abstract CT 75th Annual Meeting of the Meteoritical-Society CY AUG 12-17, 2012 CL Cairns, AUSTRALIA SP Meteorit Soc, Australian Natl Univ, Australian Sci Instruments, Barringer Crater Co, Cameca, Australian Govt, Dept Ind, Innovat Sci, Res & Tertiary Educ, IMCA, Japan Aerosp Explorat Agcy, Lunar & Planetary Inst, NASA, Planetary Studies Fdn, ThermoFisher Sci ID ISOTOPIC SYSTEMATICS C1 [Herd, C. D. K.] Univ Alberta, Dept Earth & Atmospher Sci, Edmonton, AB T6G 2E3, Canada. [Zhou, Q.; Wu, F.; Li, X.; Li, Q-L.] Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China. [Yin, Q.] Univ Calif Davis, Dept Geol, Davis, CA 95616 USA. [McCoy, T. J.] Smithsonian Natl Museum Nat Hist, Dept Mineral Sci, Washington, DC 20560 USA. EM herd@ualberta.ca NR 7 TC 0 Z9 0 U1 0 U2 1 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1086-9379 J9 METEORIT PLANET SCI JI Meteorit. Planet. Sci. PD JUL PY 2012 VL 47 SU 1 SI SI BP A178 EP A178 PG 1 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 987AV UT WOS:000307389700145 ER PT J AU McCoy, TJ Beck, A McSween, HY Team, D AF McCoy, T. J. Beck, A. McSween, H. Y., Jr. Team, Dawn TI DAWN, VESTA AND THE HED'S: THE EXPECTED, THE EXPLAINED, AND THE SURPRISES SO METEORITICS & PLANETARY SCIENCE LA English DT Meeting Abstract CT 75th Annual Meeting of the Meteoritical-Society CY AUG 12-17, 2012 CL Cairns, AUSTRALIA SP Meteorit Soc, Australian Natl Univ, Australian Sci Instruments, Barringer Crater Co, Cameca, Australian Govt, Dept Ind, Innovat Sci, Res & Tertiary Educ, IMCA, Japan Aerosp Explorat Agcy, Lunar & Planetary Inst, NASA, Planetary Studies Fdn, ThermoFisher Sci C1 [McCoy, T. J.; Beck, A.] Smithsonian Inst, Washington, DC 20560 USA. [McSween, H. Y., Jr.] Univ Tennessee, Knoxville, TN USA. RI Beck, Andrew/J-7215-2015 OI Beck, Andrew/0000-0003-4455-2299 NR 10 TC 0 Z9 0 U1 0 U2 8 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1086-9379 J9 METEORIT PLANET SCI JI Meteorit. Planet. Sci. PD JUL PY 2012 VL 47 SU 1 SI SI BP A264 EP A264 PG 1 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 987AV UT WOS:000307389700231 ER PT J AU Mittlefehldt, DW Beck, AW Ammannito, E Carsenty, U De Sanctis, MC Le Corre, L McCoy, TJ Reddy, V Schroder, SE AF Mittlefehldt, D. W. Beck, A. W. Ammannito, E. Carsenty, U. De Sanctis, M. C. Le Corre, L. McCoy, T. J. Reddy, V. Schroeder, S. E. TI GEOLOGIC STRUCTURES IN CRATER WALLS ON VESTA. SO METEORITICS & PLANETARY SCIENCE LA English DT Meeting Abstract CT 75th Annual Meeting of the Meteoritical-Society CY AUG 12-17, 2012 CL Cairns, AUSTRALIA SP Meteorit Soc, Australian Natl Univ, Australian Sci Instruments, Barringer Crater Co, Cameca, Australian Govt, Dept Ind, Innovat Sci, Res & Tertiary Educ, IMCA, Japan Aerosp Explorat Agcy, Lunar & Planetary Inst, NASA, Planetary Studies Fdn, ThermoFisher Sci C1 [Mittlefehldt, D. W.] NASA, Lyndon B Johnson Space Ctr, Houston, TX 77058 USA. [Beck, A. W.; McCoy, T. J.] Smithsonian Natl Museum Nat Hist, Washington, DC USA. [Ammannito, E.; De Sanctis, M. C.] INAF, Ist Astrofis & Planetol Spaziali, Rome, Italy. [Carsenty, U.] DLR, Inst Planetary Res, Berlin, Germany. [Le Corre, L.; Reddy, V.; Schroeder, S. E.] Max Planck Inst Sonnensyst Forsch, Katlenburg Lindau, Germany. [Reddy, V.] Univ N Dakota, Grand Forks, ND 58201 USA. EM david.w.mittlefehldt@nasa.gov RI De Sanctis, Maria Cristina/G-5232-2013; Beck, Andrew/J-7215-2015 OI De Sanctis, Maria Cristina/0000-0002-3463-4437; Beck, Andrew/0000-0003-4455-2299 NR 8 TC 0 Z9 0 U1 0 U2 3 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1086-9379 J9 METEORIT PLANET SCI JI Meteorit. Planet. Sci. PD JUL PY 2012 VL 47 SU 1 SI SI BP A275 EP A275 PG 1 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 987AV UT WOS:000307389700242 ER PT J AU Prettyman, TH Reedy, RC Mittlefehldt, DW Yamashita, N Lawrence, DJ Beck, AW Feldman, WC McCoy, TJ McSween, HY Toplis, MJ Forni, O Mizzon, H Raymond, CA Russell, CT Polanskey, CA Joy, SP Mafi, J AF Prettyman, T. H. Reedy, R. C. Mittlefehldt, D. W. Yamashita, N. Lawrence, D. J. Beck, A. W. Feldman, W. C. McCoy, T. J. McSween, H. Y. Toplis, M. J. Forni, O. Mizzon, H. Raymond, C. A. Russell, C. T. Polanskey, C. A. Joy, S. P. Mafi, J. CA Dawn Sci Team TI FOR A FEW HOWARDITES MORE: GRAND MAPS THE ELEMENTAL COMPOSITION OF VESTA SO METEORITICS & PLANETARY SCIENCE LA English DT Meeting Abstract CT 75th Annual Meeting of the Meteoritical-Society CY AUG 12-17, 2012 CL Cairns, AUSTRALIA SP Meteorit Soc, Australian Natl Univ, Australian Sci Instruments, Barringer Crater Co, Cameca, Australian Govt, Dept Ind, Innovat Sci, Res & Tertiary Educ, IMCA, Japan Aerosp Explorat Agcy, Lunar & Planetary Inst, NASA, Planetary Studies Fdn, ThermoFisher Sci ID GAMMA-RAY; DAWN C1 [Lawrence, D. J.] Johns Hopkins Univ, Appl Phys Lab, Baltimore, MD 21218 USA. [Beck, A. W.; McCoy, T. J.] Smithsonian Inst, Washington, DC 20560 USA. [McSween, H. Y.] Univ Tennessee, Knoxville, TN 37996 USA. [Toplis, M. J.; Forni, O.; Mizzon, H.] Univ Toulouse, Toulouse, France. [Russell, C. T.; Joy, S. P.; Mafi, J.] Univ Calif Los Angeles, Los Angeles, CA 90024 USA. EM prettyman@psi.edu RI Russell, Christopher/E-7745-2012; Beck, Andrew/J-7215-2015; Lawrence, David/E-7463-2015 OI Russell, Christopher/0000-0003-1639-8298; Beck, Andrew/0000-0003-4455-2299; Lawrence, David/0000-0002-7696-6667 NR 7 TC 0 Z9 0 U1 0 U2 3 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1086-9379 J9 METEORIT PLANET SCI JI Meteorit. Planet. Sci. PD JUL PY 2012 VL 47 SU 1 SI SI BP A322 EP A322 PG 1 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 987AV UT WOS:000307389700289 ER PT J AU Weider, SZ Nittler, LR Starr, RD Evans, LG McCoy, TJ Solomon, SC AF Weider, Shoshana Z. Nittler, Larry R. Starr, Richard D. Evans, Larry G. McCoy, Timothy J. Solomon, Sean C. TI THE IRON CONTENT OF MERCURY'S SURFACE FROM MESSENGER X-RAY SPECTROMETRY. SO METEORITICS & PLANETARY SCIENCE LA English DT Meeting Abstract CT 75th Annual Meeting of the Meteoritical-Society CY AUG 12-17, 2012 CL Cairns, AUSTRALIA SP Meteorit Soc, Australian Natl Univ, Australian Sci Instruments, Barringer Crater Co, Cameca, Australian Govt, Dept Ind, Innovat Sci, Res & Tertiary Educ, IMCA, Japan Aerosp Explorat Agcy, Lunar & Planetary Inst, NASA, Planetary Studies Fdn, ThermoFisher Sci C1 [Weider, Shoshana Z.; Nittler, Larry R.; Solomon, Sean C.] Carnegie Inst Sci, Dept Terr Magnetism, Washington, DC 20015 USA. [Starr, Richard D.] Catholic Univ Amer, Dept Phys, Washington, DC 20064 USA. [Evans, Larry G.] Comp Sci Corp, Lanham, MD 20706 USA. [McCoy, Timothy J.] Smithsonian Inst, Washington, DC 20013 USA. EM sweider@ciw.edu NR 7 TC 0 Z9 0 U1 0 U2 4 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1086-9379 J9 METEORIT PLANET SCI JI Meteorit. Planet. Sci. PD JUL PY 2012 VL 47 SU 1 SI SI BP A403 EP A403 PG 1 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 987AV UT WOS:000307389700370 ER PT J AU Welzenbach, L Corrigan, C McCoy, T Lunning, N AF Welzenbach, L. Corrigan, C. McCoy, T. Lunning, N. TI ANTARCTIC METEORITES AT THE SMITHSONIAN INSTITUTION: PARTNERING WITH A BIOREPOSITORY TO OPTIMIZE CURATION SO METEORITICS & PLANETARY SCIENCE LA English DT Meeting Abstract CT 75th Annual Meeting of the Meteoritical-Society CY AUG 12-17, 2012 CL Cairns, AUSTRALIA SP Meteorit Soc, Australian Natl Univ, Australian Sci Instruments, Barringer Crater Co, Cameca, Australian Govt, Dept Ind, Innovat Sci, Res & Tertiary Educ, IMCA, Japan Aerosp Explorat Agcy, Lunar & Planetary Inst, NASA, Planetary Studies Fdn, ThermoFisher Sci C1 [Welzenbach, L.; Corrigan, C.; McCoy, T.; Lunning, N.] Natl Museum Nat Hist, Smithsonian Inst, Washington, DC 20560 USA. EM welzenbl@si.edu NR 0 TC 0 Z9 0 U1 0 U2 0 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1086-9379 J9 METEORIT PLANET SCI JI Meteorit. Planet. Sci. PD JUL PY 2012 VL 47 SU 1 SI SI BP A407 EP A407 PG 1 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 987AV UT WOS:000307389700374 ER PT J AU Williams, CD Wadhwa, M Janney, PE Hines, RR Bullock, ES MacPherson, GJ AF Williams, C. D. Wadhwa, M. Janney, P. E. Hines, R. R. Bullock, E. S. MacPherson, G. J. TI Ti, Si and Mg Isotope Systematics of FUN CAI CMS-1. SO METEORITICS & PLANETARY SCIENCE LA English DT Meeting Abstract CT 75th Annual Meeting of the Meteoritical-Society CY AUG 12-17, 2012 CL Cairns, AUSTRALIA SP Meteorit Soc, Australian Natl Univ, Australian Sci Instruments, Barringer Crater Co, Cameca, Australian Govt, Dept Ind, Innovat Sci, Res & Tertiary Educ, IMCA, Japan Aerosp Explorat Agcy, Lunar & Planetary Inst, NASA, Planetary Studies Fdn, ThermoFisher Sci ID METEORITES; ANOMALIES; TITANIUM; ALLENDE C1 [Williams, C. D.; Wadhwa, M.; Janney, P. E.; Hines, R. R.] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ USA. [Bullock, E. S.; MacPherson, G. J.] Smithsonian Inst, Washington, DC 20560 USA. EM cdwill10@asu.edu RI Janney, Philip/K-2733-2013 OI Janney, Philip/0000-0001-5740-4266 NR 6 TC 0 Z9 0 U1 0 U2 2 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1086-9379 J9 METEORIT PLANET SCI JI Meteorit. Planet. Sci. PD JUL PY 2012 VL 47 SU 1 SI SI BP A411 EP A411 PG 1 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 987AV UT WOS:000307389700378 ER PT J AU Richardson, DJ Moser, WE Richardson, KE Hammond, CI Lazo-Wasem, E AF Richardson, Dennis J. Moser, William E. Richardson, Kristen E. Hammond, Charlotte I. Lazo-Wasem, Eric TI New Host and Geographic Distribution Records for the Fish Leeches Placobdella translucens (Sawyer and Shelley, 1976) and Myzobdella reducta (Meyer, 1940) (Hirudinida) SO COMPARATIVE PARASITOLOGY LA English DT Article DE Placobdella translucens; Placobdella michiganensis; Placobdella phalera; Myzobdella reducta; green sunfish; Lepomis cyanellus; pumpkinseed; Lepomis gibbosus; Glossiphoniidae; Piscicolidae; Hirudinea; Annelida; Nebraska ID PISCICOLARIA-REDUCTA; FAMILY GLOSSIPHONIIDAE; WEST-VIRGINIA; WISCONSIN; RHYNCHOBDELLIDA; REDESCRIPTION; PARASITES; ANNELIDA; LUGUBRIS; DARTER AB The leeches Placobdella translucens (Sawyer and Shelley, 1976) and Myzobdella reducta (Meyer, 1940) are reported from Nebraska, U.S.A. for the first time. Individuals of M. reducta were collected from the caudal fins of 4 green sunfish (Lepomis cyanellus). A single pumpkinseed (Lepomis gibbosus) was infested with 2 individuals of P. translucens, constituting the first report of this species from a host. Placobdella translucens closely resembles Placobdella michiganensis (Sawyer. 1972) and Placobdella phalera (sensu Moore, 1906). In 1906, J. P. Moore established the most widely recognized concept of P. phalera when he "rather doubtfully referred" some material that he collected from Michigan to P. phalera (Graf, 1899). Placobdella phalera (Graf, 1899) was recently declared a junior synonym of Placobdella ornata. Given the similarities among the species, it is likely that at least some individuals previously identified as P. phalera (sensu Moore, 1906) represent P. translucens and/or P. michiganensis. C1 [Richardson, Dennis J.; Richardson, Kristen E.; Hammond, Charlotte I.] Quinnipiac Univ, Hamden, CT 06518 USA. [Moser, William E.] Smithsonian Inst, Natl Museum Nat Hist, Dept Invertebrate Zool, Museum Support Ctr MRC 534, Suitland, MD 20746 USA. [Lazo-Wasem, Eric] Yale Univ, Peabody Museum Nat Hist, Div Invertebrate Zool, New Haven, CT 06520 USA. RP Richardson, DJ (reprint author), Quinnipiac Univ, 275 Mt Carmel Ave, Hamden, CT 06518 USA. EM Dennis.Richardson@quinnipiac.edu; moserw@si.edu; Kristen.Richardson@quinnipiac.edu; Charlotte.Hammond@quinnipiac.edu; eric.lazo-wasem@yale.edu FU School of Arts and Sciences, Quinnipiac University FX Vince Kirby, Sr., graciously allowed access to the collecting site. Katherine R. Richardson, Marjorie A. Richardson, Emma L. Richardson, Benjamin Praeuner, and Susan A. Penas assisted in collecting fish. Dwight and Nancy Praeuner provided logistic support. This study was funded in part by a Grant-in-Aid Award (summer 2011) by The School of Arts and Sciences, Quinnipiac University to D.J.R., and C.I.H. Tamara Cook served as acting editor for this manuscript, arranging reviews and exercising full editorial discretion, thereby allowing D.J.R. to contribute to the Helminthological Society of Washington through continued publication in Comparative Parasitology. NR 54 TC 0 Z9 0 U1 2 U2 8 PU HELMINTHOLOGICAL SOC WASHINGTON PI LAWRENCE PA C/O ALLEN PRESS INC, 1041 NEW HAMPSHIRE ST, ACCT# 141866, LAWRENCE, KS 66044 USA SN 1525-2647 J9 COMP PARASITOL JI Comp. Parasitol. PD JUL PY 2012 VL 79 IS 2 BP 293 EP 297 PG 5 WC Parasitology; Zoology SC Parasitology; Zoology GA 983OE UT WOS:000307127800017 ER PT J AU Warrit, N Michener, CD Lekprayoon, C AF Warrit, Natapot Michener, Charles D. Lekprayoon, Chariya TI A REVIEW OF SMALL CARPENTER BEES OF THE GENUS CERATINA, SUBGENUS CERATINIDIA, OF THAILAND (HYMENOPTERA, APIDAE) SO PROCEEDINGS OF THE ENTOMOLOGICAL SOCIETY OF WASHINGTON LA English DT Article DE Xylocopinae; locality records; Thailand; taxonomy; keys AB Ten taxa of small carpenter bees belonging to subgenus Ceratinidia Cockerell and Porter, 1899, of the genus Ceratina Latreille, 1802, are recorded from Thailand. One new species, C. chiangmaiensis, is described. Ceratina lepida var. sutepensis Cockerell is elevated to full species status as C. sutepensis Cockerell. Ceratina lepida var. sublepida is synonymized under C. sutepensis. Lectotypes are designated for Ceratina cognata Smith, C. compacta Smith, and C. sutepensis Cockerell. Collecting records and brief taxonomic comments on Ceratinidia species in Thailand are presented, together with keys to the species. C1 [Warrit, Natapot; Lekprayoon, Chariya] Chulalongkorn Univ, Fac Sci, Ctr Excellence Entomol, Dept Biol, Bangkok 10330, Thailand. [Michener, Charles D.] Univ Kansas, Nat Hist Museum, Div Entomol, Lawrence, KS 66045 USA. [Michener, Charles D.] Univ Kansas, Entomol Program, Dept Ecol & Evolutionary Biol, Lawrence, KS 66045 USA. [Warrit, Natapot] Smithsonian Inst, Natl Museum Nat Hist, Dept Entomol, Washington, DC 20013 USA. RP Warrit, N (reprint author), Chulalongkorn Univ, Fac Sci, Ctr Excellence Entomol, Dept Biol, Bangkok 10330, Thailand. EM michener@ku.edu; natapot.w@chula.ac.th FU Biodiversity Research Training Program, Thailand [BRT-149006]; Hungerford Fund; Raymond Beamer Fellowship of the University of Kansas Entomology Program, USA; Thailand Research Fund [TRfemale MRG5380139]; Grants for Development of New Faculty Staff, Chulalongkorn University, Thailand FX We thank the following people and their institutions for providing specimens for study: Cornelius van Achterberg, John S. Ascher, George R. Else, Michael S. Engel, Zachary H. Falin, David G. Furth, Tino Gonsalves, Maureen Melo, Wojciech J. Pulawski, Jerome G. Rozen Jr., G. Allan Samuelson, the late Roy R. Snelling, Prachaval Sukhumalanand, and Yan-ru Wu. The research by CL and NW was largely supported from the Biodiversity Research Training Program (BRT-149006), Thailand, and that by NW, from the Hungerford Fund and the Raymond Beamer Fellowship of the University of Kansas Entomology Program, USA, and the Thailand Research Fund (TR female MRG5380139) and Grants for Development of New Faculty Staff, Chulalongkorn University, Thailand. NR 30 TC 0 Z9 1 U1 1 U2 11 PU ENTOMOL SOC WASHINGTON PI WASHINGTON PA SMITHSONIAN INSTITUTION DEPT ENTOMOLOGY, WASHINGTON, DC 20560 USA SN 0013-8797 J9 P ENTOMOL SOC WASH JI Proc. Entomol. Soc. Wash. PD JUL PY 2012 VL 114 IS 3 BP 398 EP 416 DI 10.4289/0013-8797.114.3.398 PG 19 WC Entomology SC Entomology GA 988ZE UT WOS:000307529200007 ER PT J AU Dobbs, MA Lueker, M Aird, KA Bender, AN Benson, BA Bleem, LE Carlstrom, JE Chang, CL Cho, HM Clarke, J Crawford, TM Crites, AT Flanigan, DI de Haan, T George, EM Halverson, NW Holzapfel, WL Hrubes, JD Johnson, BR Joseph, J Keisler, R Kennedy, J Kermish, Z Lanting, TM Lee, AT Leitch, EM Luong-Van, D McMahon, JJ Mehl, J Meyer, SS Montroy, TE Padin, S Plagge, T Pryke, C Richards, PL Ruh, JE Schaffer, KK Schwan, D Shirokoff, E Spieler, HG Staniszewski, Z Stark, AA Vanderlinde, K Vieira, JD Vu, C Westbrook, B Williamson, R AF Dobbs, M. A. Lueker, M. Aird, K. A. Bender, A. N. Benson, B. A. Bleem, L. E. Carlstrom, J. E. Chang, C. L. Cho, H. -M. Clarke, J. Crawford, T. M. Crites, A. T. Flanigan, D. I. de Haan, T. George, E. M. Halverson, N. W. Holzapfel, W. L. Hrubes, J. D. Johnson, B. R. Joseph, J. Keisler, R. Kennedy, J. Kermish, Z. Lanting, T. M. Lee, A. T. Leitch, E. M. Luong-Van, D. McMahon, J. J. Mehl, J. Meyer, S. S. Montroy, T. E. Padin, S. Plagge, T. Pryke, C. Richards, P. L. Ruh, J. E. Schaffer, K. K. Schwan, D. Shirokoff, E. Spieler, H. G. Staniszewski, Z. Stark, A. A. Vanderlinde, K. Vieira, J. D. Vu, C. Westbrook, B. Williamson, R. TI Frequency multiplexed superconducting quantum interference device readout of large bolometer arrays for cosmic microwave background measurements SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID SOUTH-POLE TELESCOPE; TRANSITION-EDGE SENSORS; X-RAY MICROCALORIMETERS; APEX-SZ; GALAXY CLUSTERS; ELECTROTHERMAL FEEDBACK; SQUID MULTIPLEXERS; CMB POLARIZATION; POWER SPECTRUM; MILLIMETER AB A technological milestone for experiments employing transition edge sensor bolometers operating at sub-Kelvin temperature is the deployment of detector arrays with 100s-1000s of bolometers. One key technology for such arrays is readout multiplexing: the ability to read out many sensors simultaneously on the same set of wires. This paper describes a frequency-domain multiplexed readout system which has been developed for and deployed on the APEX-SZ and South Pole Telescope millimeter wavelength receivers. In this system, the detector array is divided into modules of seven detectors, and each bolometer within the module is biased with a unique similar to MHz sinusoidal carrier such that the individual bolometer signals are well separated in frequency space. The currents from all bolometers in a module are summed together and pre-amplified with superconducting quantum interference devices operating at 4 K. Room temperature electronics demodulate the carriers to recover the bolometer signals, which are digitized separately and stored to disk. This readout system contributes little noise relative to the detectors themselves, is remarkably insensitive to unwanted microphonic excitations, and provides a technology pathway to multiplexing larger numbers of sensors. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4737629] C1 [Dobbs, M. A.; de Haan, T.; Kennedy, J.; Lanting, T. M.; Vanderlinde, K.] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada. [Lueker, M.; Clarke, J.; Flanigan, D. I.; George, E. M.; Holzapfel, W. L.; Johnson, B. R.; Kermish, Z.; Lee, A. T.; Richards, P. L.; Schwan, D.; Shirokoff, E.; Westbrook, B.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Lueker, M.; Padin, S.; Shirokoff, E.; Staniszewski, Z.; Vieira, J. D.] CALTECH, Div Phys Math & Astron, Pasadena, CA 91125 USA. [Aird, K. A.; Hrubes, J. D.; Luong-Van, D.] Univ Chicago, Chicago, IL 60637 USA. [Bender, A. N.; Halverson, N. W.] Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA. [Bender, A. N.; Halverson, N. W.] Univ Colorado, Dept Phys, Boulder, CO 80309 USA. [Benson, B. A.; Bleem, L. E.; Carlstrom, J. E.; Chang, C. L.; Crawford, T. M.; Crites, A. T.; Keisler, R.; Leitch, E. M.; Mehl, J.; Meyer, S. S.; Padin, S.; Plagge, T.; Schaffer, K. K.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA. [Benson, B. A.; Carlstrom, J. E.; Chang, C. L.; Meyer, S. S.; Padin, S.; Schaffer, K. K.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. [Bleem, L. E.; Carlstrom, J. E.; Keisler, R.; Meyer, S. S.] Univ Chicago, Dept Phys, Chicago, IL 60637 USA. [Carlstrom, J. E.; Crawford, T. M.; Crites, A. T.; Leitch, E. M.; Mehl, J.; Meyer, S. S.; Plagge, T.; Williamson, R.] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA. [Cho, H. -M.] Natl Inst Stand & Technol, Boulder, CO 80305 USA. [Clarke, J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Johnson, B. R.] Columbia Univ, Dept Phys, New York, NY 10027 USA. [Joseph, J.; Vu, C.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Engn, Berkeley, CA 94720 USA. [Lanting, T. M.] D Wave Syst, Burnaby, BC V5C 6G9, Canada. [Lee, A. T.; Spieler, H. G.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA. [McMahon, J. J.] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA. [Montroy, T. E.; Ruh, J. E.; Staniszewski, Z.] Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA. [Montroy, T. E.; Ruh, J. E.; Staniszewski, Z.] Case Western Reserve Univ, CERCA, Cleveland, OH 44106 USA. [Pryke, C.] Univ Minnesota Twin Cities, Sch Phys & Astron, Minneapolis, MN 55455 USA. [Schaffer, K. K.] Sch Art Inst Chicago, Liberal Arts Dept, Chicago, IL 60603 USA. [Stark, A. A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Dobbs, MA (reprint author), McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada. RI Williamson, Ross/H-1734-2015; Holzapfel, William/I-4836-2015; OI Williamson, Ross/0000-0002-6945-2975; Aird, Kenneth/0000-0003-1441-9518 FU National Science Foundation (NSF) funds APEX-SZ [AST-0138348, AST-0709497]; South Pole Telescope [ANT-0638937, ANT-0130612]; U.S. Department of Energy (DOE) [DE-AC02-05CH11231]; Natural Sciences and Engineering Research Council of Canada; Canadian Institute for Advanced Research; Canadian Foundation for Innovation; Canada Research Chairs program; Sloan Fellowship FX The National Science Foundation (NSF) funds APEX-SZ through Grant Nos. AST-0138348 and AST-0709497 and the South Pole Telescope through Grant Nos. ANT-0638937 and ANT-0130612. Work at LBNL is supported by the U.S. Department of Energy (DOE) under Contract No. DE-AC02-05CH11231. The McGill team acknowledges funding from the Natural Sciences and Engineering Research Council of Canada, Canadian Institute for Advanced Research, and the Canadian Foundation for Innovation. M.D. acknowledges support from the Canada Research Chairs program and a Sloan Fellowship. NR 75 TC 39 Z9 39 U1 1 U2 12 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0034-6748 EI 1089-7623 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD JUL PY 2012 VL 83 IS 7 AR 073113 DI 10.1063/1.4737629 PG 24 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 988YR UT WOS:000307527900014 PM 22852677 ER PT J AU des Etangs, AL Bourrier, V Wheatley, PJ Dupuy, H Ehrenreich, D Vidal-Madjar, A Hebrard, G Ballester, GE Desert, JM Ferlet, R Sing, DK AF des Etangs, A. Lecavelier Bourrier, V. Wheatley, P. J. Dupuy, H. Ehrenreich, D. Vidal-Madjar, A. Hebrard, G. Ballester, G. E. Desert, J. -M. Ferlet, R. Sing, D. K. TI Temporal variations in the evaporating atmosphere of the exoplanet HD 189733b SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE planetary systems; stars: individual: HD 189733; techniques: spectroscopic; planets and satellites: atmospheres; stars: flare ID EXTRASOLAR PLANET HD209458B; ENERGETIC NEUTRAL ATOMS; HOT JUPITERS; X-RAY; LYMAN-ALPHA; MASS-LOSS; 209458B; HYDROGEN; ULTRAVIOLET; HD-209458B AB Atmospheric escape has been detected from the exoplanet HD 209458b through transit observations of the hydrogen Lyman-alpha line. Here we present spectrally resolved Lyman-alpha transit observations of the exoplanet HD 189733b at two different epochs. These HST/STIS observations show for the first time that there are significant temporal variations in the physical conditions of an evaporating planetary atmosphere. While atmospheric hydrogen is not detected in the first epoch observations, it is observed at the second epoch, producing a transit absorption depth of 14.4 +/- 3.6% between velocities of -230 to -140 km s(-1). Contrary to HD 209458b, these high velocities cannot arise from radiation pressure alone and require an additional acceleration mechanism, such as interactions with stellar wind protons. The observed absorption can be explained by an atmospheric escape rate of neutral hydrogen atoms of about 10(9) g s(-1), a stellar wind with a velocity of 190 kms(-1) and a temperature of similar to 10(5) K. An X-ray flare from the active star seen with Swift/XRT 8 h before the second-epoch observation supports the idea that the observed changes within the upper atmosphere of the planet can be caused by variations in the stellar wind properties, or by variations in the stellar energy input to the planetary escaping gas (or a mix of the two effects). These observations provide the first indication of interaction between the exoplanet's atmosphere and stellar variations. C1 [des Etangs, A. Lecavelier; Bourrier, V.; Dupuy, H.; Vidal-Madjar, A.; Hebrard, G.; Ferlet, R.] CNRS, UMR 7095, Inst Astrophys Paris, F-75014 Paris, France. [des Etangs, A. Lecavelier; Bourrier, V.; Dupuy, H.; Vidal-Madjar, A.; Hebrard, G.; Ferlet, R.] Univ Paris 06, UMR 7095, Inst Astrophys Paris, F-75014 Paris, France. [Wheatley, P. J.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. [Ehrenreich, D.] UJF Grenoble 1, CNRS, INSU, IPAG,UMR 5274, Grenoble, France. [Ballester, G. E.] Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA. [Desert, J. -M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Sing, D. K.] Univ Exeter, Astrophys Grp, Sch Phys, Exeter EX4 4QL, Devon, England. RP des Etangs, AL (reprint author), CNRS, UMR 7095, Inst Astrophys Paris, 98Bis Blvd Arago, F-75014 Paris, France. EM lecaveli@iap.fr OI Ehrenreich, David/0000-0001-9704-5405; Wheatley, Peter/0000-0003-1452-2240; Sing, David /0000-0001-6050-7645 FU NASA [NAS 5-26555]; STScI [HST-GO-11673.01-A]; Fondation Simone et Cino Del Duca FX Based on observations made with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. This research has made use of data obtained from NASA's Swift satellite. G. E. B. acknowledges financial support by this program through STScI grant HST-GO-11673.01-A to the University of Arizona. These observations are associated with program #11673. This work has been supported by an award from the Fondation Simone et Cino Del Duca. NR 35 TC 65 Z9 65 U1 1 U2 4 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JUL PY 2012 VL 543 AR L4 DI 10.1051/0004-6361/201219363 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 976PQ UT WOS:000306597200167 ER PT J AU Hassall, TE Stappers, BW Hessels, JWT Kramer, M Alexov, A Anderson, K Coenen, T Karastergiou, A Keane, EF Kondratiev, VI Lazaridis, K van Leeuwen, J Noutsos, A Serylak, M Sobey, C Verbiest, JPW Weltevrede, P Zagkouris, K Fender, R Wijers, RAMJ Bahren, L Bell, ME Broderick, JW Corbel, S Daw, EJ Dhillon, VS Eisloffel, J Falcke, H Griessmeier, JM Jonker, P Law, C Markoff, S Miller-Jones, JCA Osten, R Rol, E Scaife, AMM Scheers, B Schellart, P Spreeuw, H Swinbank, J ter Veen, S Wise, MW Wijnands, R Wucknitz, O Zarka, P Asgekar, A Bell, MR Bentum, MJ Bernardi, G Best, P Bonafede, A Boonstra, AJ Brentjens, M Brouw, WN Bruggen, M Butcher, HR Ciardi, B Garrett, MA Gerbers, M Gunst, AW van Haarlem, MP Heald, G Hoeft, M Holties, H de Jong, A Koopmans, LVE Kuniyoshi, M Kuper, G Loose, GM Maat, P Masters, J McKean, JP Meulman, H Mevius, M Munk, H Noordam, JE Orru, E Paas, H Pandey-Pommier, M Pandey, VN Pizzo, R Polatidis, A Reich, W Rottgering, H Sluman, J Steinmetz, M Sterks, CGM Tagger, M Tang, Y Tasse, C Vermeulen, R van Weeren, RJ Wijnholds, SJ Yatawatta, S AF Hassall, T. E. Stappers, B. W. Hessels, J. W. T. Kramer, M. Alexov, A. Anderson, K. Coenen, T. Karastergiou, A. Keane, E. F. Kondratiev, V. I. Lazaridis, K. van Leeuwen, J. Noutsos, A. Serylak, M. Sobey, C. Verbiest, J. P. W. Weltevrede, P. Zagkouris, K. Fender, R. Wijers, R. A. M. J. Bahren, L. Bell, M. E. Broderick, J. W. Corbel, S. Daw, E. J. Dhillon, V. S. Eisloeffel, J. Falcke, H. Griessmeier, J. -M. Jonker, P. Law, C. Markoff, S. Miller-Jones, J. C. A. Osten, R. Rol, E. Scaife, A. M. M. Scheers, B. Schellart, P. Spreeuw, H. Swinbank, J. ter Veen, S. Wise, M. W. Wijnands, R. Wucknitz, O. Zarka, P. Asgekar, A. Bell, M. R. Bentum, M. J. Bernardi, G. Best, P. Bonafede, A. Boonstra, A. J. Brentjens, M. Brouw, W. N. Brueggen, M. Butcher, H. R. Ciardi, B. Garrett, M. A. Gerbers, M. Gunst, A. W. van Haarlem, M. P. Heald, G. Hoeft, M. Holties, H. de Jong, A. Koopmans, L. V. E. Kuniyoshi, M. Kuper, G. Loose, G. M. Maat, P. Masters, J. McKean, J. P. Meulman, H. Mevius, M. Munk, H. Noordam, J. E. Orru, E. Paas, H. Pandey-Pommier, M. Pandey, V. N. Pizzo, R. Polatidis, A. Reich, W. Rottgering, H. Sluman, J. Steinmetz, M. Sterks, C. G. M. Tagger, M. Tang, Y. Tasse, C. Vermeulen, R. van Weeren, R. J. Wijnholds, S. J. Yatawatta, S. TI Wide-band simultaneous observations of pulsars: disentangling dispersion measure and profile variations SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE pulsars: general; ISM: general; magnetic fields; telescopes ID ARRIVAL-TIME DELAY; EMPIRICAL-THEORY; RADIO-EMISSION; INTERSTELLAR SCATTERING; SUPERDISPERSION DELAY; FREQUENCY-DEPENDENCE; SPECTRAL BEHAVIOR; PULSES; REFRACTION; RADIATION AB Dispersion in the interstellar medium is a well known phenomenon that follows a simple relationship, which has been used to predict the time delay of dispersed radio pulses since the late 1960s. We performed wide-band simultaneous observations of four pulsars with LOFAR (at 40-190 MHz), the 76-m Lovell Telescope (at 1400 MHz) and the Effelsberg 100-m Telescope (at 8000 MHz) to test the accuracy of the dispersion law over a broad frequency range. In this paper we present the results of these observations which show that the dispersion law is accurate to better than 1 part in 105 across our observing band. We use this fact to constrain some of the properties of the interstellar medium along the line-of-sight and use the lack of any aberration or retardation effects to determine upper limits on emission heights in the pulsar magnetosphere. We also discuss the effect of pulse profile evolution on our observations, and the implications that it could have for precision pulsar timing projects such as the detection of gravitational waves with pulsar timing arrays. C1 [Hassall, T. E.; Stappers, B. W.; Kramer, M.; Weltevrede, P.] Univ Manchester, Sch Phys & Astron, Ctr Astrophys, Jodrell Bank, Manchester M13 9PL, Lancs, England. [Hessels, J. W. T.; Kondratiev, V. I.; van Leeuwen, J.; Falcke, H.; Wise, M. W.; Asgekar, A.; Bentum, M. J.; Boonstra, A. J.; Brentjens, M.; Butcher, H. R.; Garrett, M. A.; Gerbers, M.; Gunst, A. W.; van Haarlem, M. P.; Heald, G.; Holties, H.; de Jong, A.; Kuper, G.; Loose, G. M.; Maat, P.; McKean, J. P.; Meulman, H.; Mevius, M.; Munk, H.; Noordam, J. E.; Paas, H.; Pandey, V. N.; Pizzo, R.; Polatidis, A.; Sluman, J.; Tang, Y.; Vermeulen, R.; van Weeren, R. J.; Wijnholds, S. J.] Netherlands Inst Radio Astron, ASTRON, NL-7990 AA Dwingeloo, Netherlands. [Hessels, J. W. T.; Alexov, A.; Anderson, K.; Coenen, T.; van Leeuwen, J.; Wijers, R. A. M. J.; Bahren, L.; Law, C.; Markoff, S.; Miller-Jones, J. C. A.; Rol, E.; Scheers, B.; Spreeuw, H.; Swinbank, J.; Wise, M. W.; Wijnands, R.] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 XH Amsterdam, Netherlands. [Kramer, M.; Keane, E. F.; Lazaridis, K.; Noutsos, A.; Sobey, C.; Verbiest, J. P. W.; Falcke, H.; Kuniyoshi, M.; Reich, W.] Max Planck Inst Radioastron, D-53121 Bonn, Germany. [Karastergiou, A.; Zagkouris, K.] Univ Oxford, Oxford OX1 3RH, England. [Serylak, M.] CNRS INSU, Observ Paris, Stn Radioastron Nancay, F-18330 Nancay, France. [Serylak, M.; Griessmeier, J. -M.; Tagger, M.] CNRS, UMR 7328, LPC2E, F-45071 Orleans 02, France. [Fender, R.; Bell, M. E.; Broderick, J. W.; Scaife, A. M. M.] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England. [Bell, M. E.] Univ Sydney, Sch Phys, Sydney Inst Astron, Sydney, NSW 2006, Australia. [Corbel, S.] Univ Paris 07, F-91191 Gif Sur Yvette, France. [Corbel, S.] CEA Saclay, UMR AIM, Serv Astrophys, F-91191 Gif Sur Yvette, France. [Corbel, S.] Inst Univ France, F-75005 Paris, France. [Daw, E. J.; Dhillon, V. S.] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England. [Eisloeffel, J.; Hoeft, M.] Thuringer Landessternwarte, D-07778 Tautenburg, Germany. [Falcke, H.; Jonker, P.; Schellart, P.; ter Veen, S.; Orru, E.] Radboud Univ Nijmegen, IMAPP, Dept Astrophys, NL-6500 GL Nijmegen, Netherlands. [Jonker, P.] SRON Netherlands Inst Space Res, SRON, NL-3584 CA Utrecht, Netherlands. [Jonker, P.; Bernardi, G.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Law, C.] Univ Calif Berkeley, Radio Astron Lab, Berkeley, CA USA. [Miller-Jones, J. C. A.] Curtin Univ Technol, Int Ctr Radio Astron Res, Perth, WA 6845, Australia. [Osten, R.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Scheers, B.] CWI, NL-1090 GB Amsterdam, Netherlands. [Wucknitz, O.] Univ Bonn, Argelander Inst Astron, D-53121 Bonn, Germany. [Zarka, P.; Tasse, C.] UPMC, CNRS, Observ Paris, LESIA, F-92195 Meudon, France. [Bell, M. R.; Ciardi, B.] Max Planck Inst Astrophys, D-85741 Garching, Germany. [Best, P.] Univ Edinburgh, Royal Observ Edinburgh, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland. [Bonafede, A.; Brueggen, M.] Jacobs Univ Bremen, D-28759 Bremen, Germany. [Brouw, W. N.; Koopmans, L. V. E.; Yatawatta, S.] Univ Groningen, Kapteyn Astron Inst, NL-9700 AV Groningen, Netherlands. [Butcher, H. R.] Australian Natl Univ, Res Sch Astron & Astrophys, Mt Stromlo Observ, Weston, ACT 2611, Australia. [Garrett, M. A.; Rottgering, H.; van Weeren, R. J.] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands. [Masters, J.] NRAO Headquarters, Charlottesville, VA 22903 USA. [Pandey-Pommier, M.] Observ Lyon, Ctr Rech Astrophys Lyon, F-69561 St Genis Laval, France. [Steinmetz, M.] Leibniz Inst Fr Astrophys Potsdam AIP, D-14482 Potsdam, Germany. [Sterks, C. G. M.] Univ Groningen, CIT, NL-9700 AB Groningen, Netherlands. RP Hassall, TE (reprint author), Univ Manchester, Sch Phys & Astron, Ctr Astrophys, Jodrell Bank, Manchester M13 9PL, Lancs, England. EM tomehassall@gmail.com RI Falcke, Heino/H-5262-2012; Yatawatta, Sarod/E-6037-2013; Miller-Jones, James/B-2411-2013; Tagger, Michel/O-6615-2014; Ciardi, Benedetta/N-7625-2015; Kondratiev, Vladislav/N-1105-2015; OI Falcke, Heino/0000-0002-2526-6724; Yatawatta, Sarod/0000-0001-5619-4017; Wijers, Ralph/0000-0002-3101-1808; Miller-Jones, James/0000-0003-3124-2814; Tagger, Michel/0000-0003-2962-3220; Kondratiev, Vladislav/0000-0001-8864-7471; Swinbank, John/0000-0001-9445-1846; van Weeren, Reinout/0000-0002-0587-1660 FU STFC studentship; Netherlands Research School for Astronomy [NOVA3-NW3-2.3.1]; European Commission [FP7-PEOPLE-2007-4-3-IRG, 224838]; Leverhulme Trust; European Union [236394]; DFG (German Research Foundation) within the framework of the Research Unit [FOR 1254] FX We would like to thank Jim Cordes for his insight and useful discussions, Christine Jordan for arranging the observations from Jodrell Bank, and the anonymous referee for their insightful comments. LOFAR, the LOw Frequency ARray designed and constructed by ASTRON, has facilities in several countries, that are owned by various parties (each with their own funding sources), and that are collectively operated by the International LOFAR Telescope (ILT) foundation under a joint scientific policy. This publication made use of observations taken with the 100-m telescopes of the MPIfR (Max-Planck-Institut fur Radioastronomie) at Effelsberg. Ben Stappers, Patrick Weltevrede and the Lovell observations are supported through an STFC rolling grant. Tom Hassall is the recipient of an STFC studentship. Jason Hessels is a Veni Fellow of the Netherlands Foundation for Scientific Research. Joeri van Leeuwen and Thijs Coenen are supported by the Netherlands Research School for Astronomy (Grant NOVA3-NW3-2.3.1) and by the European Commission (Grant FP7-PEOPLE-2007-4-3-IRG #224838). Aris Karastergiou is grateful to the Leverhulme Trust for financial support. Joris Verbiest is supported by the European Union under Marie Curie Intra-European Fellowship 236394. Charlotte Sobey is supported by the DFG (German Research Foundation) within the framework of the Research Unit FOR 1254, Magnetisation of Interstellar and Intergalactic Media: The Prospects of Low-Frequency Radio Observations. NR 67 TC 34 Z9 34 U1 0 U2 4 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 EI 1432-0746 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JUL PY 2012 VL 543 AR A66 DI 10.1051/0004-6361/201218970 PG 20 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 976PQ UT WOS:000306597200066 ER PT J AU Hatzes, AP Zechmeister, M Matthews, J Kuschnig, R Walker, GAH Dollinger, M Guenther, DB Moffat, AFJ Rucinski, SM Sasselov, D Weiss, WW AF Hatzes, A. P. Zechmeister, M. Matthews, J. Kuschnig, R. Walker, G. A. H. Doellinger, M. Guenther, D. B. Moffat, A. F. J. Rucinski, S. M. Sasselov, D. Weiss, W. W. TI The mass of the planet-hosting giant star beta Geminorum determined from its p-mode oscillation spectrum SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE techniques: radial velocities; stars: individual: beta Geminorum; stars: late-type ID RADIAL-VELOCITY VARIATIONS; SOLAR-LIKE OSCILLATIONS; STELLAR OSCILLATIONS; SPECTROSCOPIC SURVEY; EPSILON-OPHIUCHI; RED GIANTS; ASTEROSEISMOLOGY; PULSATIONS; ISOCHRONES; PARAMETERS AB Aims. Our aim is to use precise radial velocity measurements and photometric data to derive the frequency spacing of the p-mode oscillation spectrum of the planet-hosting star beta Gem. This spacing along with the interferometric radius for this star can then be used to derive an accurate stellar mass. Methods. We use a long time series of over 60 h of precise stellar radial velocity measurements of beta Gem taken with an iodine absorption cell at the echelle spectrograph mounted on the 2 m Alfred Jensch Telescope. We also present complementary photometric data for this star taken with the MOST microsatellite spanning 3.6 d. A Fourier analysis is used to derive the frequencies that are present in each data set. Results. The Fourier analysis of the radial velocity data reveals the presence of up to 17 significant pulsation modes in the frequency interval 10-250 mu Hz. Most of these fall on a grid of equally-spaced frequencies having a separation of 7.14 +/- 0.12 mu Hz. An analysis of 3.6 days of high precision photometry taken with the MOST space telescopes shows the presence of up to 16 modes, six of which are consistent with modes found in the spectral (radial velocity) data. This frequency spacing is consistent with high overtone radial pulsations; however, until the pulsation modes are identified we cannot be sure if some of these are nonradial modes or even mixed modes. The radial velocity frequency spacing along with angular diameter measurements of beta Gem via interferometry results in a stellar mass of M = 1.91 +/- 0.09 M-circle dot. This value confirms the intermediate mass of the star determined using stellar evolutionary tracks. Conclusions. beta Gem is confirmed to be an intermediate mass star. Stellar pulsations in giant stars along with interferometric radius measurements can provide accurate determinations of the stellar mass of planet hosting giant stars. These can also be used to calibrate stellar evolutionary tracks. C1 [Hatzes, A. P.; Doellinger, M.] Thuringer Landessternwarte Tautenburg, D-07778 Tautenburg, Germany. [Zechmeister, M.] Univ Gottingen, D-37077 Gottingen, Germany. [Matthews, J.] Univ British Columbia, Dept Phys, Vancouver, BC V6T 1Z1, Canada. [Kuschnig, R.; Weiss, W. W.] Univ Wien, Inst Astron, A-1180 Vienna, Austria. [Guenther, D. B.] St Marys Univ, Dept Phys & Astron, Inst Computat Astrophys, Halifax, NS B3H 3C3, Canada. [Moffat, A. F. J.] Univ Montreal, Dept Phys, Observ Astron Mt Megant, Montreal, PQ H3C 3J7, Canada. [Rucinski, S. M.] Univ Toronto, Dept Astron & Astrophys, Toronto, ON M5S 3H4, Canada. [Sasselov, D.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA USA. RP Hatzes, AP (reprint author), Thuringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenburg, Germany. EM artie@tls-tautenburg.de FU Deutsche Forschungsgemeinschaft (DFG) [HA 3279/5-1, RE 1664/4-1] FX We thank the referee for useful comments that improved the manuscript. This research has made use of the SIMBAD data base operated at CDS, Strasbourg, France. A. P. H. acknowledges grant HA 3279/5-1 from the Deutsche Forschungsgemeinschaft (DFG). M.Z. acknowledges financial support from DFG grant RE 1664/4-1. NR 38 TC 7 Z9 7 U1 0 U2 0 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JUL PY 2012 VL 543 AR A98 DI 10.1051/0004-6361/201219332 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 976PQ UT WOS:000306597200098 ER PT J AU Menten, KM Reid, MJ Kaminski, T Claussen, MJ AF Menten, K. M. Reid, M. J. Kaminski, T. Claussen, M. J. TI The size, luminosity, and motion of the extreme carbon star IRC+10216 (CW Leonis) SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE astrometry; proper motions; stars: AGB and post-AGB; stars: carbon; ISM: kinematics and dynamics; radio continuum: stars ID ASYMPTOTIC GIANT BRANCH; INFRARED OBJECT IRC&10216; MASS-LOSS HISTORY; CIRCUMSTELLAR ENVELOPE; RADIO-CONTINUUM; LINE SURVEY; DUST SHELL; BOW SHOCKS; EVOLUTION; MIRA AB Very Large Array observations of the extreme carbon star IRC+10216 at 7 mm wavelength with 40 milli-arcsec resolution resolve the object's radio emission, which forms an almost round uniform disk of 83 milli-arcsec diameter, corresponding to 11 AU (for an assumed distance of 130 pc). We find a brightness temperature of 1630 K for the radio photosphere. Since the emission is optically thick, we can directly estimate IRC+10216's average luminosity, which is 8600 L-circle dot. This value is in excellent agreement with what is predicted from the period-luminosity relation for carbon-rich Miras. Assuming an effective temperature of 2750 K for IRC+10216, it implies an optical photospheric diameter of 3.8 AU. Our precise determination of IRC+10216's proper motion fits the picture presented by far-ultraviolet and far-infrared wavelength observations of its interaction region with the interstellar medium (its "astrosphere"): the star moves roughly in the direction expected from the morphology of the termination shock and its astrotail structures. Calculation of its three dimensional velocity and an analysis of the kinematics of its surrounding interstellar medium (ISM) suggest an appreciable relative velocity of 42 km s(-1), which is about half the value discussed in recent studies. This suggests a lower (time-averaged) mass loss rate and/or a higher ISM density than previously assumed. C1 [Menten, K. M.; Kaminski, T.] Max Planck Inst Radioastron, D-53121 Bonn, Germany. [Reid, M. J.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Claussen, M. J.] Natl Radio Astron Observ, Array Operat Ctr, Socorro, NM 87801 USA. RP Menten, KM (reprint author), Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany. EM kmenten@mpifr-bonn.mpg.de; reid@cfa.harvard.edu; kaminski@mpifr-bonn.mpg.de; mclausse@nrao.edu NR 53 TC 15 Z9 15 U1 0 U2 0 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JUL PY 2012 VL 543 AR A73 DI 10.1051/0004-6361/201219422 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 976PQ UT WOS:000306597200073 ER PT J AU Mortier, A Santos, NC Sozzetti, A Mayor, M Latham, D Bonfils, X Udry, S AF Mortier, A. Santos, N. C. Sozzetti, A. Mayor, M. Latham, D. Bonfils, X. Udry, S. TI The frequency of giant planets around metal-poor stars SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE techniques: radial velocities; planetary systems; planets and satellites: formation; stars: abundances; stars: statistics ID EXTRA-SOLAR PLANETS; HARPS SEARCH; STELLAR METALLICITY; DISK INSTABILITY; WIDE ORBITS; K-GIANTS; MASS; DWARF; GAS; DETECTABILITY AB Context. The discovery of about 700 extrasolar planets, so far, has lead to the first statistics concerning extrasolar planets. The presence of giant planets seems to depend on stellar metallicity and mass. For example, they are more frequent around metal-rich stars, with an exponential increase in planet occurrence rates with metallicity. Aims. We analyzed two samples of metal-poor stars (-2.0 <= [Fe/H] <= 0.0) to see if giant planets are indeed rare around these objects. Radial velocity datasets were obtained with two different spectrographs (HARPS and HIRES). Detection limits for these data, expressed in minimum planetary mass and period, are calculated. These produce trustworthy numbers for the planet frequency. Methods. A general Lomb-Scargle (GLS) periodogram analysis was used together with a bootstrapping method to produce the detection limits. Planet frequencies were calculated based on a binomial distribution function within metallicity bins. Results. Almost all hot Jupiters and most giant planets should have been found in these data. Hot Jupiters around metal-poor stars have a frequency lower than 1.0% at one sigma. Giant planets with periods up to 1800 days, however, have a higher frequency of f(p) = 2.63(-0.8)(+2.5)%. Taking into account the different metallicities of the stars, we show that giant planets appear to be very frequent (f(p) = 4.48(-1.38)(+4.04)%) around stars with [Fe/H] > -0.7, while they are rare around stars with [Fe/H] <= -0.7 (<= 2.36% at one sigma). Conclusions. Giant planet frequency is indeed a strong function of metallicity, even in the low-metallicity tail. However, the frequencies are most likely higher than previously thought. C1 [Mortier, A.; Santos, N. C.] Univ Porto, Ctr Astrofis, P-4150762 Oporto, Portugal. [Santos, N. C.] Univ Porto, Fac Ciencias, Dept Fis & Astron, P-4150762 Oporto, Portugal. [Sozzetti, A.] Osserv Astron Torino, INAF, I-10025 Pino Torinese, Italy. [Mayor, M.; Udry, S.] Univ Geneva, Observ Genve, CH-1290 Sauverny, Switzerland. [Latham, D.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Bonfils, X.] UJF Grenoble 1, CNRS, INSU, IPAG,UMR 5274, F-38041 Grenoble, France. RP Mortier, A (reprint author), Univ Porto, Ctr Astrofis, Rua Estrelas, P-4150762 Oporto, Portugal. EM amortier@astro.up.pt RI Santos, Nuno/E-9957-2011; OI Santos, Nuno/0000-0003-4422-2919; Sozzetti, Alessandro/0000-0002-7504-365X; Bonfils, Xavier/0000-0001-9003-8894; Mortier, Annelies/0000-0001-7254-4363 FU W. M. Keck Foundation; European Research Council/European Community [239953]; Fundacao para a Ciencia e a Tecnologia (FCT); FCT/MCTES (Portugal); POPH/FSE (EC); [PTDC/CTE-AST/098528/2008]; [PTDC/CTE-AST/09860/2008] FX The data presented herein are based on observations collected at the La Silla Parana Observatory, ESO (Chile) with the HARPS spectrograph at the 3.6-m telescope (ESO runs ID 72.C-0488, 082.C-0212, and 085.C-0063) and at the W. M. Keck Observatory that is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. This Observatory was made possible by the generous financial support of the W. M. Keck Foundation.; We thank the ananymous referee for his/her useful comments. This work was supported by the European Research Council/European Community under the FP7 through Starting Grant agreement number 239953. N.C.S. also acknowledges the support from Fundacao para a Ciencia e a Tecnologia (FCT) through program Ciencia 2007 funded by FCT/MCTES (Portugal) and POPH/FSE (EC), and in the form of grants reference PTDC/CTE-AST/098528/2008 and PTDC/CTE-AST/09860/2008. NR 54 TC 18 Z9 18 U1 0 U2 2 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JUL PY 2012 VL 543 AR A45 DI 10.1051/0004-6361/201118651 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 976PQ UT WOS:000306597200045 ER PT J AU van Weeren, RJ Rottgering, HJA Rafferty, DA Pizzo, R Bonafede, A Bruggen, M Brunetti, G Ferrari, C Orru, E Heald, G McKean, JP Tasse, C de Gasperin, F Birzan, L van Zwieten, JE van der Tol, S Shulevski, A Jackson, N Offringa, AR Conway, J Intema, HT Clarke, TE van Bemmel, I Miley, GK White, GJ Hoeft, M Cassano, R Macario, G Morganti, R Wise, MW Horellou, C Valentijn, EA Wucknitz, O Kuijken, K Ensslin, TA Anderson, J Asgekar, A Avruch, IM Beck, R Bell, ME Bell, MR Bentum, MJ Bernardi, G Best, P Boonstra, AJ Brentjens, M van de Brink, RH Broderick, J Brouw, WN Butcher, HR van Cappellen, W Ciardi, B Eisloffel, J Falcke, H Fender, R Garrett, MA Gerbers, M Gunst, A van Haarlem, MP Hamaker, JP Hassall, T Hessels, JWT Koopmans, LVE Kuper, G van Leeuwen, J Maat, P Millenaar, R Munk, H Nijboer, R Noordam, JE Pandey, VN Pandey-Pommier, M Polatidis, A Reich, W Scaife, AMM Schoenmakers, A Sluman, J Stappers, BW Steinmetz, M Swinbank, J Tagger, M Tang, Y Vermeulen, R de Vos, M van Haarlem, MP AF van Weeren, R. J. Rottgering, H. J. A. Rafferty, D. A. Pizzo, R. Bonafede, A. Brueggen, M. Brunetti, G. Ferrari, C. Orru, E. Heald, G. McKean, J. P. Tasse, C. de Gasperin, F. Birzan, L. van Zwieten, J. E. van der Tol, S. Shulevski, A. Jackson, N. Offringa, A. R. Conway, J. Intema, H. T. Clarke, T. E. van Bemmel, I. Miley, G. K. White, G. J. Hoeft, M. Cassano, R. Macario, G. Morganti, R. Wise, M. W. Horellou, C. Valentijn, E. A. Wucknitz, O. Kuijken, K. Ensslin, T. A. Anderson, J. Asgekar, A. Avruch, I. M. Beck, R. Bell, M. E. Bell, M. R. Bentum, M. J. Bernardi, G. Best, P. Boonstra, A-J Brentjens, M. van de Brink, R. H. Broderick, J. Brouw, W. N. Butcher, H. R. van Cappellen, W. Ciardi, B. Eisloeffel, J. Falcke, H. Fender, R. Garrett, M. A. Gerbers, M. Gunst, A. van Haarlem, M. P. Hamaker, J. P. Hassall, T. Hessels, J. W. T. Koopmans, L. V. E. Kuper, G. van Leeuwen, J. Maat, P. Millenaar, R. Munk, H. Nijboer, R. Noordam, J. E. Pandey, V. N. Pandey-Pommier, M. Polatidis, A. Reich, W. Scaife, A. M. M. Schoenmakers, A. Sluman, J. Stappers, B. W. Steinmetz, M. Swinbank, J. Tagger, M. Tang, Y. Vermeulen, R. de Vos, M. van Haarlem, M. P. TI First LOFAR observations at very low frequencies of cluster-scale non-thermal emission: the case of Abell 2256 SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE telescopes; radio continuum: general; galaxies: clusters: individual: Abell 2256; large-scale structure of Universe ID MERGING GALAXY CLUSTER; EXTENDED RADIO-EMISSION; X-RAY-EMISSION; DEEP 1.4 GHZ; SHOCK ACCELERATION; PARTICLE-ACCELERATION; MAGNETIC-FIELDS; COMA CLUSTER; SKY SURVEY; ASTROPHYSICAL SHOCKS AB Abell 2256 is one of the best known examples of a galaxy cluster hosting large-scale diffuse radio emission that is unrelated to individual galaxies. It contains both a giant radio halo and a relic, as well as a number of head-tail sources and smaller diffuse steep-spectrum radio sources. The origin of radio halos and relics is still being debated, but over the last years it has become clear that the presence of these radio sources is closely related to galaxy cluster merger events. Here we present the results from the first LOFAR low band antenna (LBA) observations of Abell 2256 between 18 and 67 MHz. To our knowledge, the image presented in this paper at 63 MHz is the deepest ever obtained at frequencies below 100 MHz in general. Both the radio halo and the giant relic are detected in the image at 63 MHz, and the diffuse radio emission remains visible at frequencies as low as 20 MHz. The observations confirm the presence of a previously claimed ultra-steep spectrum source to the west of the cluster center with a spectral index of -2.3 +/- 0.4 between 63 and 153 MHz. The steep spectrum suggests that this source is an old part of a head-tail radio source in the cluster. For the radio relic we find an integrated spectral index of -0.81 +/- 0.03, after removing the flux contribution from the other sources. This is relatively flat which could indicate that the efficiency of particle acceleration at the shock substantially changed in the last similar to 0.1 Gyr due to an increase of the shock Mach number. In an alternative scenario, particles are re-accelerated by some mechanism in the downstream region of the shock, resulting in the relatively flat integrated radio spectrum. In the radio halo region we find indications of low-frequency spectral steepening which may suggest that relativistic particles are accelerated in a rather inhomogeneous turbulent region. C1 [van Weeren, R. J.; Rottgering, H. J. A.; Rafferty, D. A.; Birzan, L.; van der Tol, S.; Miley, G. K.; Kuijken, K.; Garrett, M. A.; Pandey-Pommier, M.] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands. [van Weeren, R. J.; Pizzo, R.; Heald, G.; McKean, J. P.; van Zwieten, J. E.; van Bemmel, I.; Morganti, R.; Wise, M. W.; Asgekar, A.; Avruch, I. M.; Bentum, M. J.; Boonstra, A-J; Brentjens, M.; van de Brink, R. H.; Brouw, W. N.; Butcher, H. R.; van Cappellen, W.; Falcke, H.; Garrett, M. A.; Gerbers, M.; Gunst, A.; van Haarlem, M. P.; Hamaker, J. P.; Hessels, J. W. T.; Kuper, G.; van Leeuwen, J.; Maat, P.; Millenaar, R.; Munk, H.; Nijboer, R.; Noordam, J. E.; Polatidis, A.; Schoenmakers, A.; Sluman, J.; Tang, Y.; Vermeulen, R.; de Vos, M.] Netherlands Inst Radio Astron ASTRON, NL-7990 AA Dwingeloo, Netherlands. [Bonafede, A.; Brueggen, M.] Jacobs Univ Bremen, D-28759 Bremen, Germany. [Brunetti, G.; Cassano, R.] INAF Ist Radioastron, I-40129 Bologna, Italy. [Ferrari, C.; Macario, G.] Univ Nice Sophia Antipolis, CNRS, Observ Cote Azur, Lab Lagrange,UMR 7293, F-06300 Nice, France. [Orru, E.; Falcke, H.] Radboud Univ Nijmegen, Dept Astrophys IMAPP, NL-6500 GL Nijmegen, Netherlands. [Tasse, C.] Observ Paris, GEPI, F-92190 Meudon, France. [de Gasperin, F.; Valentijn, E. A.; Ensslin, T. A.; Bell, M. R.; Ciardi, B.] Max Planck Inst Astrophys, D-85741 Garching, Germany. [Shulevski, A.; Offringa, A. R.; Morganti, R.; Avruch, I. M.; Brouw, W. N.; Koopmans, L. V. E.; Pandey, V. N.] Univ Groningen, Kapteyn Astron Inst, NL-9700 AV Groningen, Netherlands. [Jackson, N.; Hassall, T.; Stappers, B. W.] Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England. [Conway, J.; Horellou, C.] Chalmers, Onsala Space Observ, Dept Earth & Space Sci, S-43992 Onsala, Sweden. [Intema, H. T.] Natl Radio Astron Observ, Charlottesville, VA 22903 USA. [Clarke, T. E.] USN, Res Lab, Washington, DC 20375 USA. [White, G. J.] Open Univ, Dept Phys & Astron, Heerlen, Netherlands. [White, G. J.] Rutherford Appleton Lab, Dept Space Sci, Chilton, England. [Hoeft, M.; Eisloeffel, J.] Thuringer Landessternwarte, D-07778 Tautenburg, Germany. [Wise, M. W.; Hessels, J. W. T.; van Leeuwen, J.; Swinbank, J.] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1090 GE Amsterdam, Netherlands. [Wucknitz, O.] Univ Bonn, Argelander Inst Astron, D-53121 Bonn, Germany. [Anderson, J.; Beck, R.; Reich, W.] Max Planck Inst Radioastron, D-53121 Bonn, Germany. [Bell, M. E.; Broderick, J.; Fender, R.; Scaife, A. M. M.] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England. [Bernardi, G.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Best, P.] Univ Edinburgh, Royal Observ Edinburgh, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland. [Butcher, H. R.] Australian Natl Univ, Mt Stromlo Obs, Res Sch Astron & Astrophys, Weston, ACT 2611, Australia. [Pandey-Pommier, M.] Observ Lyon, Ctr Rech Astrophys Lyon, F-69561 St Genis Laval, France. [Steinmetz, M.] Leibniz Inst Astrophys Potsdam AIP, D-14482 Potsdam, Germany. [Tagger, M.] Lab Phys & Chim Environm & Espace, F-45071 Orleans 2, France. RP van Weeren, RJ (reprint author), Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands. EM rvweeren@strw.leidenuniv.nl RI Falcke, Heino/H-5262-2012; Tagger, Michel/O-6615-2014; Shulevski, Aleksandar/E-5591-2015; Ciardi, Benedetta/N-7625-2015; Intema, Huib/D-1438-2012; OI Falcke, Heino/0000-0002-2526-6724; Tagger, Michel/0000-0003-2962-3220; Shulevski, Aleksandar/0000-0002-1827-0469; Cassano, Rossella/0000-0003-4046-0637; de Gasperin, Francesco/0000-0003-4439-2627; van Weeren, Reinout/0000-0002-0587-1660; Intema, Huib/0000-0002-5880-2730; Swinbank, John/0000-0001-9445-1846; Brunetti, Gianfranco/0000-0003-4195-8613 FU Royal Netherlands Academy of Arts and Sciences; Deutsche Forschungsgemeinschaft [FOR1254, WU 588/1-1]; PRIN-INAF; ASI-INAF [I/009/10/0]; Agence Nationale de la Recherche [ANR-09-JCJC-0001-01]; 6.1 Base funding; European Commission [PERG02-GA-2007-224897] FX We thank the anonymous referee for useful comments. LOFAR, the Low Frequency Array designed and constructed by ASTRON, has facilities in several countries, that are owned by various parties (each with their own funding sources), and that are collectively operated by the International LOFAR Telescope (ILT) foundation under a joint scientific policy. We thank Ming Sun for providing Chandra X-ray image. We have used the "cubehelix" color scheme from Green (2011). R.J.v.W. acknowledges funding from the Royal Netherlands Academy of Arts and Sciences. M. B., A. B. and M. H. acknowledge support by the Deutsche Forschungsgemeinschaft under grant FOR1254. G. B. and R. C. acknowledge partial support through PRIN-INAF 2009 and ASI-INAF I/009/10/0. C. F. and G. M. acknowledge financial support by the "Agence Nationale de la Recherche" through grant ANR-09-JCJC-0001-01. Basic research in radio astronomy at the Naval Research Laboratory is supported by 6.1 Base funding. The Open University is incorporated by Royal Charter (RC 000391), an exempt charity in England & Wales and a charity registered in Scotland (SC 038302). HTI is Jansky Fellow of the National Radio Astronomy Observatory. O.W. is supported by the "Deutsche Forschungsgemeinschaft" (Emmy-Noether Grant WU 588/1-1) and by the European Commission (European Reintegration Grant PERG02-GA-2007-224897 "WIDEMAP"). NR 92 TC 33 Z9 33 U1 1 U2 3 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 EI 1432-0746 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JUL PY 2012 VL 543 AR A43 DI 10.1051/0004-6361/201219154 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 976PQ UT WOS:000306597200043 ER PT J AU Stevens, ML Linker, JA Riley, P Hughes, WJ AF Stevens, Michael L. Linker, Jon A. Riley, Pete Hughes, W. Jeffrey TI Underestimates of magnetic flux in coupled MHD model solar wind solutions SO JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS LA English DT Article DE Corona; Solar wind; Corotating interaction regions; Magnetohydrodynamics; Space weather ID CORONAL HOLES; PLASMA; SPACECRAFT; PARAMETERS; DRIVEN; STREAM AB When validated with spacecraft observations, one enduring characteristic of global MHD solar wind models is the tendency to underestimate the interplanetary magnetic flux. This study quantifies the "missing flux" problem for models used in the coordinated Center for Integrated Space Weather Modeling study of corotating interaction regions, and identifies the model parameters most strongly related to the effect. We show that two important contributions are (1) insufficient thermal pressure in the coronal model to extract the required magnetic flux and (2) numerical diffusion in the model current sheets. Using Ulysses observations, we derive a calibration for the effective temperature in the polytropic coronal Magnetohydrodynamics Around a Sphere model that produces the expected interplanetary field at high latitudes. After recalibrating, we find that a 40% discrepancy still remains in the ecliptic plane. Moreover, the problem is 5% more severe for models of the solar cycle 23 minimum than it is for models of the cycle 22 minimum. We argue that the resolution of the heliospheric current sheet strongly affects both the general underestimate and the discrepancy between the two cycles. We also argue that improved resolution of current sheets in the low corona will further reduce the effect. (C) 2012 Elsevier Ltd. All rights reserved. C1 [Stevens, Michael L.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Linker, Jon A.; Riley, Pete] Predict Sci Inc, San Diego, CA USA. [Hughes, W. Jeffrey] Boston Univ, Boston, MA 02215 USA. RP Stevens, ML (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM mstevens@cfa.harvard.edu OI Riley, Pete/0000-0002-1859-456X FU NSF; NASA-NSF-AFOSR Strategic Capabilities program; NASA/Stanford's HMI project FX We acknowledge use of NASA/GSFC's Space Physics Data Facility's OMNIWeb ftp service, and OMNI data. We also acknowledge the use of Royal Greenwich Observatory-USAF/NOAA Sunspot Database. NSO/Kitt Peak data used here are produced cooperatively by NSF/NOAO, NASA/GSFC, and NOAA/SEL. SOLIS data used here are produced cooperatively by NSF/NSO and NASA/LWS. EUVI images were provided by the STEREO Science Data Center. SOHO is a project of international cooperation between ESA and NASA. This work was supported by the NSF supported Center for Integrated Space Weather Modeling (CISM), the joint NASA-NSF-AFOSR Strategic Capabilities program, and by NASA/Stanford's HMI project. Computations were performed on the NSF supported TACC Ranger supercomputer. NR 40 TC 10 Z9 10 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1364-6826 J9 J ATMOS SOL-TERR PHY JI J. Atmos. Sol.-Terr. Phys. PD JUL PY 2012 VL 83 SI SI BP 22 EP 31 DI 10.1016/j.jastp.2012.02.005 PG 10 WC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences SC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences GA 978TA UT WOS:000306767500004 ER PT J AU Hawn, DR Collette, BB AF Hawn, Donald R. Collette, Bruce B. TI What are the maximum size and live body coloration of opah (Teleostei: Lampridae: Lampris species)? SO ICHTHYOLOGICAL RESEARCH LA English DT Article DE Opah; Lampris; Maximum size; Life color ID REGIUS BONNATERRE; GUTTATUS; MOONFISH; LUNA AB Validity of the largest size accounts is not well documented and most published accounts of body coloration describe dead specimens lacking scales instead of the color of freshly caught opah. Maximum length is at least 163 cm fork length and maximum weight about 89 kg. The body color of fresh specimens is vermilion with white spots. C1 [Hawn, Donald R.] Univ Hawaii Manoa, Joint Inst Marine & Atmospher Res, Honolulu, HI 96822 USA. [Collette, Bruce B.] Smithsonian Inst, Natl Marine Fisheries Serv Systemat Lab, Washington, DC 20560 USA. RP Hawn, DR (reprint author), Univ Hawaii Manoa, Joint Inst Marine & Atmospher Res, 1000 Pope Rd, Honolulu, HI 96822 USA. EM Donald.Hawn@noaa.gov; collettb@si.edu NR 40 TC 2 Z9 3 U1 3 U2 10 PU SPRINGER JAPAN KK PI TOKYO PA CHIYODA FIRST BLDG EAST, 3-8-1 NISHI-KANDA, CHIYODA-KU, TOKYO, 101-0065, JAPAN SN 1341-8998 J9 ICHTHYOL RES JI Ichthyol. Res. PD JUL PY 2012 VL 59 IS 3 BP 272 EP 275 DI 10.1007/s10228-012-0277-z PG 4 WC Zoology SC Zoology GA 980ZB UT WOS:000306931600012 ER PT J AU Conforti, VA Morato, RG Augusto, AM Sousa, LDE de Avila, DM Brown, JL Reeves, JJ AF Conforti, Valeria A. Morato, Ronaldo G. Augusto, Anderson M. de Oliveira e Sousa, Lucio de Avila, David M. Brown, Janine L. Reeves, Jerry J. TI Noninvasive monitoring of adrenocortical function in captive jaguars (Panthera onca) SO ZOO BIOLOGY LA English DT Article DE endangered cats; ACTH challenge; fecal metabolites; corticoid metabolites; androgen metabolites ID ENVIRONMENTAL ENRICHMENT; STEREOTYPIC BEHAVIOR; GIANT PANDAS; CORTISOL; STRESS; METABOLISM; RESPONSES; PITUITARY; LEOPARD; CATS AB Jaguars are threatened with extinction throughout their range. A sustainable captive population can serve as a hedge against extinction, but only if they are healthy and reproduce. Understanding how jaguars respond to stressors may help improve the captive environment and enhance their wellbeing. Thus, our objectives were to: (1) conduct an adrenocorticotrophic hormone (ACTH) challenge to validate a cortisol radioimmunoassay (RIA) for noninvasive monitoring of adrenocortical function in jaguars; (2) investigate the relationship between fecal corticoid (FCM) and androgen metabolite (FAM) concentrations in males during the ACTH challenge; and (3) establish a range of physiological concentrations of FCMs for the proposed protocol. Seven jaguars (3 M, 4 F) received 500?IU/animal of ACTH. Pre- and post-ACTH fecal samples were assayed for corticoid (M and F) and androgen metabolites (M) by RIA. Concentrations of FCMs increased (P80.01) after ACTH injection (pre-ACTH: 0.90 +/- 0.12?mu g/g dry feces; post-ACTH: 2.55 +/- 0.25?mu g/g). Considering pre- and post-ACTH samples, FCM concentrations were higher (P80.01) in males (2.15 +/- 0.20?mu g/g) than in females (1.30 +/- 0.20?mu g/g), but the magnitude of the response to ACTH was comparable (P>0.05) between genders. After ACTH injection, FAMs increased in two (of 3) males; in one male, FCMs and FAMs were positively correlated (0.60; P80.01). Excretion of FCMs was assessed in 16 jaguars (7 M, 9 F) and found to be highly variable (range, 80.111.56?mu g/g). In conclusion, this study presents a cortisol RIA for monitoring adrenocortical function in jaguars noninvasively. Zoo Biol 31:426441, 2012. (c) 2011 Wiley Periodicals, Inc. C1 [Conforti, Valeria A.; de Avila, David M.; Reeves, Jerry J.] Washington State Univ, Dept Anim Sci, Pullman, WA 99164 USA. [Conforti, Valeria A.; Morato, Ronaldo G.] Inst Procarnivoros, Sao Paulo, Brazil. [Morato, Ronaldo G.] Inst Chico Mendes Conservacao Biodiversidade, Ctr Nacl Pesquisa & Conservacao Mamiferos Carnivo, Sao Paulo, Brazil. [Augusto, Anderson M.] Fundacao Jardim Zool Cidade Rio de Janeiro, Rio De Janeiro, Brazil. [Brown, Janine L.] Smithsonian Conservat Biol Inst, Ctr Species Survival, Front Royal, VA USA. RP Conforti, VA (reprint author), Rua Humaita 234-801,Bloco 2, BR-22261001 Rio De Janeiro, RJ, Brazil. EM valeria@procarnivoros.org.br FU Eucatex, Brazil; Doctoral Enhancement Award from Washington State University FX The authors thank Lea, Sergio Luis, and Mario Amorim Conforti, Sergio Luiz Conforti, and Fabiana Pizzolato de Lucena for help with sample collection and storage. We are especially thankful to Juliana Demori Fernandes and Bianca Campos from Instituto Pro-Carnivoros for coordinating sample collection, storage, processing, and shipping of samples from Brazil to the United States as well as for obtaining the permits necessary for the exportation of samples. We are grateful to Dr. Rebecca Spindler (Toronto Zoo) for coordinating sample collection and shipping from some of the North American Zoos participating in this study. Special thanks to Nada Cummings (Animal Care Coordinator, WSU) for help with RIAs and to Virginia Stout, Tawnya Tifft, and Lindsey Wallace (Animal Sciences students, WSU) for sample processing. We thank the veterinarians at Fundacao RioZoo, especially Drs. Luiz Paulo Fedullo and Daniela Prado Rodrigues, and all veterinary technicians from RioZoo and Ilha Solteira, in special Carlos Alberto de Oliveira (Fumaca), from Fundacao RioZoo, for technical assistance during the ACTH challenge. We are grateful to all curators from all the participating institutions and to all keepers for collecting, storing, and shipping the samples, especially to Marco Antonio Bernardino, Wagner da Silva Francisco, Jeferson Tavares, and Gilcemar Marques de Carvalho (RioZoo), and Antonio de Oliveira, Marco Antonio dos Santos, Marcio Antonio dos Santos, and Ezequiel Silva de Oliveira (Ilha Solteira), for providing us with behavioral data from the jaguars participating in the ACTH challenge. We greatly appreciate the valuable comments and suggestions from the two anonymous reviewers. This study was funded by Eucatex, Brazil, and by the Doctoral Enhancement Award from Washington State University. NR 37 TC 6 Z9 6 U1 2 U2 41 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0733-3188 J9 ZOO BIOL JI Zoo Biol. PD JUL-AUG PY 2012 VL 31 IS 4 BP 426 EP 441 DI 10.1002/zoo.20409 PG 16 WC Veterinary Sciences; Zoology SC Veterinary Sciences; Zoology GA 981YN UT WOS:000307008900003 PM 21953790 ER PT J AU Onofrio, R AF Onofrio, Roberto TI On the role of the uncertainty principle in superconductivity and superfluidity SO CHINESE PHYSICS B LA English DT Article DE superconductivity; superfluidity; uncertainty principle; squeezed states ID BOSE-EINSTEIN CONDENSATION; CRITICAL-FIELD; QUANTUM-SYSTEMS; UPPER LIMIT; GAS; ALUMINUM; STATE; PRESSURE; THORIUM AB We discuss the general interplay between the uncertainty principle and the onset of dissipationless transport phenomena such as superconductivity and superfluidity. We argue that these phenomena are possible because of the robustness of many-body quantum states with respect to the external environment, which is directly related to the uncertainty principle as applied to coordinates and momenta of the carriers. In the case of superconductors, this implies relationships between macroscopic quantities such as critical temperature and critical magnetic field, and microscopic quantities such as the amount of spatial squeezing of a Cooper pair and its correlation time. In the case of ultracold atomic Fermi gases, this should be paralleled by a connection between the critical temperature for the onset of superfluidity and the corresponding critical velocity. Tests of this conjecture are finally sketched with particular regard to the understanding of the behaviour of superconductors under external pressures or mesoscopic superconductors, and the possibility to mimic these effects in ultracold atomic Fermi gases using Feshbach resonances and atomic squeezed states. C1 [Onofrio, Roberto] Univ Padua, Dipartimento Fis & Astron Galileo Galilei, I-35131 Padua, Italy. [Onofrio, Roberto] Harvard Smithsonian Ctr Astrophys, ITAMP, Cambridge, MA 02138 USA. RP Onofrio, R (reprint author), Univ Padua, Dipartimento Fis & Astron Galileo Galilei, Via Marzolo 8, I-35131 Padua, Italy. EM onofrior@gmail.com NR 48 TC 0 Z9 0 U1 0 U2 9 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 1674-1056 J9 CHINESE PHYS B JI Chin. Phys. B PD JUL PY 2012 VL 21 IS 7 AR 070306 DI 10.1088/1674-1056/21/7/070306 PG 7 WC Physics, Multidisciplinary SC Physics GA 976CO UT WOS:000306558300018 ER PT J AU Dimichele, WA Lucas, SG Krainer, K AF Dimichele, William A. Lucas, Spencer G. Krainer, Karl TI VERTEBRATE TRACKWAYS AMONG A STAND OF SUPAIA WHITE PLANTS ON AN EARLY PERMIAN FLOODPLAIN, NEW MEXICO SO JOURNAL OF PALEONTOLOGY LA English DT Article ID GROWTH POSITION; RED BEDS; FORESTS; CHINA; VEGETATION; MOUNTAINS; FLORAS; BASIN; USA AB Little is known about the habit and spatial distribution of Early Permian tropical vegetation, a sharp contrast with the Pennsylvanian from which many in-situ "T-0" assemblages are known. Even less is known about the potential interaction of plants and vertebrates. Here we report the discovery of a small stand of 34 probable Supaia White plants from the Abo Formation of New Mexico. The plants were growing on a mudflat, subject to periodic flooding and exposure. The same mudflat hosts trackways of vertebrates that appear to have walked around or between the Supaia plants. The sterns are preserved as molds, and vary from 20 mm to 70 mm in diameter, averaging 42.4 mm, indicating heights of approximately 2.5-4 m. The plants, which may be described as small trees given their estimated height, are as close as 110 mm to their nearest neighbor and average nearly 300 mm apart. A series of lines or filled fissures, which we interpret as roots, radiates from the base of each stem. Leaves of Supaia thinfeldioides White are the only foliage found in association with these sterns, on bedding planes above and at the base of the lowest expression of the stem molds. Associated vertebrate trackways either congregate around some of the stems or wend their way between the stems and include those of a single large temnospondyl amphibian (Limnopus Marsh) and many of small predatory parareptiles (Dromopus Marsh). This study demonstrates that S. thinfeldiodes were small-statured, weedy, opportunistic plants. It also shows that contemporaneous vertebrates prowled such environments, presumably either for food, shelter, or both given detectable pace and path. C1 [Dimichele, William A.] NMNH Smithsonian Inst, Dept Paleobiol, Washington, DC 20560 USA. [Lucas, Spencer G.] New Mexico Museum Nat Hist & Sci, Albuquerque, NM 87104 USA. [Krainer, Karl] Univ Innsbruck, Inst Geol & Palaeontol, A-6020 Innsbruck, Austria. RP Dimichele, WA (reprint author), NMNH Smithsonian Inst, Dept Paleobiol, Washington, DC 20560 USA. EM dimichel@si.edu; spencer.lucas@state.nm.us; karl.krainer@uibk.ac.at RI DiMichele, William/K-4301-2012 NR 51 TC 3 Z9 3 U1 1 U2 5 PU PALEONTOLOGICAL SOC INC PI LAWRENCE PA 810 EAST 10TH ST, LAWRENCE, KS 66044 USA SN 0022-3360 J9 J PALEONTOL JI J. Paleontol. PD JUL PY 2012 VL 86 IS 4 BP 584 EP 594 PG 11 WC Paleontology SC Paleontology GA 973WY UT WOS:000306392200002 ER PT J AU Cadena, EA Bloch, JI Jaramillo, CA AF Cadena, Edwin A. Bloch, Jonathan I. Jaramillo, Carlos A. TI NEW BOTHREMYDID TURTLE (TESTUDINES, PLEURODIRA) FROM THE PALEOCENE OF NORTHEASTERN COLOMBIA SO JOURNAL OF PALEONTOLOGY LA English DT Article ID SIDE-NECKED TURTLES; DYROSAURID CROCODYLOMORPHA; CERREJON FORMATION; EVOLUTION; MESOEUCROCODYLIA; PHYLOGENY AB A new turtle, Puentemys mushaisaensis, from the middle to late Paleocene Cerrejon Formation of Colombia, is described on the basis of a partial skull and many partial to nearly complete carapaces and plastrons representing multiple ontogenetic stages. Whereas P. mushaisaensis is unique in aspects of its shell morphology, it shares many diagnostic characteristics of bothremydid pleurodirans, including a long exoccipital-quadrate contact, a very low and rounded almost circular carapace, and a thinner internal bone cortex than that of the external cortex in both the carapace and plastron. With a maximum carapacial length of 151 cm, P. mushaisaensis is the largest known bothremydid turtle and represents the First occurrence of bothremydids in the Paleogene of South American tropics. Results from a cladistic analysis of bothremydids indicate that P. mushaisaensis shares a close relationship with Foxemys mechinorum from the Late Cretaceous of Europe, indicating a wide-spread geographical distribution for bothremydines during the Late Cretaceous Paleocene. C1 [Cadena, Edwin A.; Bloch, Jonathan I.] Florida Museum Nat Hist, Gainesville, FL 32611 USA. [Cadena, Edwin A.] N Carolina State Univ, Dept Marine Earth & Atmospher Sci, Raleigh, NC 27695 USA. [Jaramillo, Carlos A.] Smithsonian Trop Res Inst, Ctr Trop Paleoecol & Archeol, Balboa 084303092, Ancon Aa, Panama. RP Cadena, EA (reprint author), Florida Museum Nat Hist, Dickison Hall, Gainesville, FL 32611 USA. EM eacadena@ncsu.edu OI Bloch, Jonathan/0000-0003-1484-6931 FU Smithsonian Paleobiology Endowment Fund; Florida Museum of Natural History; National Science Foundation [DEB-0733725]; Florida Museum of Natural History Miss Lucy Dickinson Fellowship; Fondo para la Investigacion de Ciencia y Tecnologia del Banco de la Republica de Colombia; Unrestricted Endowments Smithsonian Institution Grants; Carbones del Cerrejon LLC FX Funding for this project came from the Smithsonian Paleobiology Endowment Fund, the Florida Museum of Natural History, National Science Foundation grant DEB-0733725, Florida Museum of Natural History Miss Lucy Dickinson Fellowship, the Fondo para la Investigacion de Ciencia y Tecnologia del Banco de la Republica de Colombia, the Unrestricted Endowments Smithsonian Institution Grants, and Carbones del Cerrejon LLC. We thank L Teicher, F. Chavez, C. Montes, G. Hernandez and the geology team at Cerrejon SA for logistical support during fieldwork. Thanks for access to collections go to V. Schneider (North Carolina Museum of Natural History), J. Jacobs (Smithsonian National Museum of Natural History). Special thanks go to J. Arenas, F. Herrera, A. Hastings, A. Rincon, S. Moron, L, Meza, I. Gutierrez, G. Bayona, S. Wing, the Colombian Petroleum Institute-Ecopetrol SA, Smithsonian Tropical Research Institute, and the Florida Museum of Natural History. NR 38 TC 3 Z9 3 U1 0 U2 4 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA SN 0022-3360 EI 1937-2337 J9 J PALEONTOL JI J. Paleontol. PD JUL PY 2012 VL 86 IS 4 BP 688 EP 698 PG 11 WC Paleontology SC Paleontology GA 973WY UT WOS:000306392200012 ER PT J AU Marvin, U AF Marvin, Ursula TI Response to Presentation of the Service Award of the Meteoritical Society SO METEORITICS & PLANETARY SCIENCE LA English DT Letter C1 Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Marvin, U (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1086-9379 J9 METEORIT PLANET SCI JI Meteorit. Planet. Sci. PD JUL PY 2012 VL 47 IS 7 BP 1241 EP 1242 DI 10.1111/j.1945-5100.2012.01388.x PG 2 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 980MS UT WOS:000306898000015 ER PT J AU Graves, GR Newsome, SD Willard, DE Grosshuesch, DA Wurzel, WW Fogel, ML AF Graves, Gary R. Newsome, Seth D. Willard, David E. Grosshuesch, David A. Wurzel, William W. Fogel, Marilyn L. TI Nutritional stress and body condition in the Great Gray Owl (Strix nebulosa) during winter irruptive migrations SO CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE LA English DT Article DE body mass index; Great Gray Owl (Strix nebulosa); carbon; nitrogen; C/N; fasting; Minnesota; reversed sexual size dimorphism; stable isotopes; starvation ID SEXUAL SIZE DIMORPHISM; STABLE-ISOTOPE SIGNATURES; CARBON ISOTOPES; BARN-OWLS; ANIMAL-TISSUES; TENGMALM OWL; STARVATION; NITROGEN; DELTA-N-15; DELTA-C-13 AB The largest irruptive migration of the Great Gray Owl (Strix nebulosa Forster, 1772) recorded since 1831 occurred in Minnesota, USA, during the winter of 2004-2005. We tested the hypothesis that morphometric indicators of nutritional stress covary with stable isotope signatures in a sample of 265 owls killed by vehicle collisions. The ratio of carbon to nitrogen in muscle (C/N-muscle) was shown to be a reliable proxy of nutritional stress. delta C-13 values for liver and muscle were significantly higher in owls in poor condition, reflecting the depletion of lipid reserves in fasting individuals. On the other hand, delta N-15 values for liver and muscle were marginally lower or unchanged in owls in poor condition. Stomachs of emaciated owls were less likely to contain prey, implying that many nutritionally stressed individuals were too weak to hunt and were near the tipping point of irreversible fasts. In a broader context, sexual differences in the correlative relationships between stable isotope signatures, C/N, and body condition suggest that the consequences of reversed sexual size dimorphism extend to physiological processes during the nonbreeding season. C1 [Graves, Gary R.] Smithsonian Inst, Dept Vertebrate Zool, Natl Museum Nat Hist, Washington, DC 20013 USA. [Graves, Gary R.] Univ Copenhagen, Ctr Macroecol Evolut & Climate, DK-2100 Copenhagen O, Denmark. [Newsome, Seth D.; Wurzel, William W.; Fogel, Marilyn L.] Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA. [Newsome, Seth D.] Univ Wyoming, Dept Zool & Physiol, Laramie, WY 82071 USA. [Willard, David E.] Field Museum Nat Hist, Dept Zool, Chicago, IL 60605 USA. [Grosshuesch, David A.] Super Natl Forest, Grand Marais, MN 55604 USA. [Wurzel, William W.] SUNY ESF, SUNY Coll Environm Sci & Forestry, Syracuse, NY 13210 USA. RP Graves, GR (reprint author), Smithsonian Inst, Dept Vertebrate Zool, Natl Museum Nat Hist, MRC-116,POB 37012, Washington, DC 20013 USA. EM gravesg@si.edu RI Fogel, Marilyn/M-2395-2015; publist, CMEC/C-3010-2012; publicationpage, cmec/B-4405-2017 OI Fogel, Marilyn/0000-0002-1176-3818; FU National Museum of Natural History, Smithsonian Institution; National Science Foundation [ATM-0502491]; Carnegie Institution of Washington; W.M. Keck Foundation [072000] FX For salvaging speciments, we thank C. Henderson, J. Hines, M. Hamady, K. Haws, P. Perry, K. Woizeschke, J. Welsh, M. Minchak, S. Wilson, and R. Staffon (all from the Minnesota Department of Natural Resources), J. Lind (from Natural Resources Research Institute), and J. Goggin (from Raptor Research Center). T. Gnoske and M. Hennen of the Field Museum helped with specimen preparation. E. Snyder, C. Mancuso, and B. O'Connor provided laboratory assistance. The manuscript was significantly improved by comments on earlier drafts by John Whiteman and two anonymous reviewers. G.R.G was supported by the Wetmore Fund (National Museum of Natural History, Smithsonian Institution) and G.R.G. and S.D.N were supported by the Walcott Fund (National Museum of Natural History, Smithsonian Institution). S.D.N was also supported by the National Science Foundation (ATM-0502491), Carnegie Institution of Washington, and the W.M. Keck Foundation (072000). NR 78 TC 5 Z9 6 U1 1 U2 36 PU CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS PI OTTAWA PA 1200 MONTREAL ROAD, BUILDING M-55, OTTAWA, ON K1A 0R6, CANADA SN 0008-4301 J9 CAN J ZOOL JI Can. J. Zool.-Rev. Can. Zool. PD JUL PY 2012 VL 90 IS 7 BP 787 EP 797 DI 10.1139/Z2012-047 PG 11 WC Zoology SC Zoology GA 977CM UT WOS:000306634000001 ER PT J AU Lidgard, DC Bowen, WD Boness, DJ AF Lidgard, D. C. Bowen, W. D. Boness, D. J. TI Longitudinal changes and consistency in male physical and behavioural traits have implications for mating success in the grey seal (Halichoerus grypus) SO CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE LA English DT Article DE grey seal; Halichoerus grypus; breeding behaviour; behavioural consistency; intraindividual ID NORTHERN ELEPHANT SEALS; RED DEER; REPRODUCTIVE SUCCESS; SEXUAL SELECTION; SABLE ISLAND; MESOCRICETUS-AURATUS; NATURAL-POPULATIONS; ANIMAL PERSONALITY; BREEDING-SEASON; DIVING BEHAVIOR AB We examined age-related changes and consistency in physical and behavioural traits of 20 male grey seals (Halichoerus grypus (Fabricius, 1791)) and implications for a proxy of mating success (number of oestrous females attended) over four successive breeding seasons on Sable Island, Canada. Across the study, young males (10-15 years) gained body mass, while old males (23-31 years) lost body mass. Body length was an important determinant of tenure (time spent at a site among females) and males of all ages exhibited a high level of consistency in duration of tenure (r = 0.40-0.50). In young males, our proxy of success showed a strong relationship with arrival body mass and also exhibited a high level of consistency (r = 0.50). None of the physical traits measured explained variation in success by exhibiting mating tactics that did not involve tenure, which is likely due to the opportunistic nature of those tactics. Whereas young male grey seals exhibited age-dependent improvements in success owing to changes in their physical state, later in life physical traits were less influential and suggest that nonphysical traits may compensate for a deteriorating physical state and its impact on male success. C1 [Lidgard, D. C.] Dalhousie Univ, Dept Biol, Halifax, NS B3H 4R2, Canada. [Bowen, W. D.] Fisheries & Oceans Canada, Bedford Inst Oceanog, Populat Ecol Div, Dartmouth, NS B2Y 4A2, Canada. [Boness, D. J.] Smithsonian Inst, Natl Zool Pk, Dept Conservat Biol, Washington, DC 20008 USA. RP Lidgard, DC (reprint author), Dalhousie Univ, Dept Biol, Halifax, NS B3H 4R2, Canada. EM damian.lidgard@dal.ca RI Bowen, William/D-2758-2012 FU Smithsonian Institution; Friends of the National Zoo; Christensen Fund; Fisheries and Oceans Canada; Natural Sciences and Engineering Research Council of Canada FX We are very grateful to S. Ambs, D. Austin, C. Beck, G. Breed, S. Budge, D. Coltman, M. Cooper, T. Hubbard, S. Insley, S. Iverson, S. Lang, J. McMillan, T. Schulz, S. Tucker, and J. van Dommelen for assistance in the field. We are also grateful for infrastructure support provided on Sable Island by G. Forbes. The study was supported by a Smithsonian Institution Graduate and Pre-doctorate Fellowship awarded to D.C.L., and funds from the Friends of the National Zoo, the Smithsonian Institution, the Christensen Fund, the Fisheries and Oceans Canada, and the Natural Sciences and Engineering Research Council of Canada. This manuscript was improved through comments from two anonymous reviewers and we are grateful to them. NR 86 TC 3 Z9 3 U1 2 U2 30 PU CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS PI OTTAWA PA 1200 MONTREAL ROAD, BUILDING M-55, OTTAWA, ON K1A 0R6, CANADA SN 0008-4301 J9 CAN J ZOOL JI Can. J. Zool.-Rev. Can. Zool. PD JUL PY 2012 VL 90 IS 7 BP 849 EP 860 DI 10.1139/Z2012-053 PG 12 WC Zoology SC Zoology GA 977CM UT WOS:000306634000007 ER PT J AU Tojeiro, R Percival, WJ Wake, DA Maraston, C Skibba, RA Zehavi, I Ross, AJ Brinkmann, J Conroy, C Guo, H Manera, M Masters, KL Pforr, J Samushia, L Schneider, DP Thomas, D Weaver, BA Bizyaev, D Brewington, H Malanushenko, E Malanushenko, V Oravetz, D Pan, K Shelden, A Simmons, A Snedden, S AF Tojeiro, Rita Percival, Will J. Wake, David A. Maraston, Claudia Skibba, Ramin A. Zehavi, Idit Ross, Ashley J. Brinkmann, Jon Conroy, Charlie Guo, Hong Manera, Marc Masters, Karen L. Pforr, Janine Samushia, Lado Schneider, Donald P. Thomas, Daniel Weaver, Benjamin A. Bizyaev, Dmitry Brewington, Howard Malanushenko, Elena Malanushenko, Viktor Oravetz, Daniel Pan, Kaike Shelden, Alaina Simmons, Audrey Snedden, Stephanie TI The progenitors of present-day massive red galaxies up to z similar to 0.7-finding passive galaxies using SDSS-I/II and SDSS-III SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE surveys; galaxies: evolution; cosmology: observations ID DIGITAL SKY SURVEY; HALO OCCUPATION DISTRIBUTION; SPECTROSCOPIC TARGET SELECTION; COLOR-MAGNITUDE RELATION; STAR-FORMATION HISTORIES; GIANT BRANCH STARS; 7TH DATA RELEASE; TP-AGB MODELS; LUMINOSITY FUNCTION; STELLAR POPULATIONS AB We present a comprehensive study of 250 000 galaxies targeted by the Baryon Oscillation Spectroscopic Survey (BOSS) up to z approximate to 0.7 with the specific goal of identifying and characterizing a population of galaxies that has evolved without significant merging. We compute a likelihood that each BOSS galaxy is a progenitor of the luminous red galaxies (LRGs) sample, targeted by SDSS-I/II up z approximate to 0.5, by using the fossil record of LRGs and their inferred star formation histories, metallicity histories and dust content. We determine merger rates, luminosity growth rates and the evolution of the large-scale clustering between the two surveys, and we investigate the effect of using different stellar population synthesis models in our conclusions. We demonstrate that our sample is slowly evolving (of the order of 2 +/- 1.5 per cent Gyr-1 by merging) by computing the change in weighted luminosity-per-galaxy between the two samples, and that this result is robust to our choice of stellar population models. Our conclusions refer to the bright and massive end of the galaxy population, with Mi0.55?-22 and M*? 1011.2 M?, corresponding roughly to 95 and 40 per cent of the LRGs and BOSS galaxy populations, respectively. Our analysis further shows that any possible excess of flux in BOSS galaxies, when compared to LRGs, from potentially unresolved targets at z approximate to 0.55 must be less than 1 per cent in the r0.55 band (approximately equivalent to the g band in the rest frame of galaxies at z= 0.55). When weighting the BOSS galaxies based on the predicted properties of the LRGs, and restricting the analysis to the reddest BOSS galaxies, we find an evolution of the large-scale clustering that is consistent with dynamical passive evolution, assuming a standard cosmology. We conclude that our likelihoods give a weighted sample that is as clean and as close to passive evolution (in dynamical terms, i.e. no or negligible merging) as possible, and that is optimal for cosmological studies. C1 [Tojeiro, Rita; Percival, Will J.; Maraston, Claudia; Ross, Ashley J.; Manera, Marc; Masters, Karen L.; Samushia, Lado; Thomas, Daniel] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England. [Wake, David A.] Yale Univ, Dept Astron, New Haven, CT 06520 USA. [Skibba, Ramin A.] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. [Zehavi, Idit; Guo, Hong] Case Western Reserve Univ, Dept Astron, Cleveland, OH 44106 USA. [Zehavi, Idit; Guo, Hong] Case Western Reserve Univ, CERCA, Cleveland, OH 44106 USA. [Brinkmann, Jon; Brewington, Howard; Malanushenko, Elena; Malanushenko, Viktor; Oravetz, Daniel; Pan, Kaike; Shelden, Alaina; Simmons, Audrey; Snedden, Stephanie] Apache Point Observ, Sunspot, NM 88349 USA. [Conroy, Charlie] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Pforr, Janine] Natl Opt Astron Observ, Tucson, AZ 85719 USA. [Schneider, Donald P.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA. [Schneider, Donald P.; Bizyaev, Dmitry] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA. [Weaver, Benjamin A.] NYU, Ctr Cosmol & Particle Phys, New York, NY 10003 USA. RP Tojeiro, R (reprint author), Univ Portsmouth, Inst Cosmol & Gravitat, Dennis Sciama Bldg, Portsmouth PO1 3FX, Hants, England. EM rita.tojeiro@port.ac.uk RI Pforr, Janine/J-3967-2015; Guo, Hong/J-5797-2015 OI Pforr, Janine/0000-0002-3414-8391; Guo, Hong/0000-0003-4936-8247 FU European Research Council; Alfred P. Sloan Foundation; National Science Foundation; U.S. Department of Energy; SDSS-III Collaboration; University of Arizona; Brazilian Participation Group; Brookhaven National Laboratory; University of Cambridge; Carnegie Mellon University; University of Florida; French Participation Group; German Participation Group; Harvard University; Instituto de Astrofisica de Canarias; Michigan State/Notre Dame/JINA Participation Group; Johns Hopkins University; Lawrence Berkeley National Laboratory; Max Planck Institute for Astrophysics; Max Planck Institute for Extraterrestrial Physics; New Mexico State University; New York University; Ohio State University; Pennsylvania State University; University of Portsmouth; Princeton University; Spanish Participation Group; University of Tokyo; University of Utah; Vanderbilt University; University of Virginia; University of Washington; Yale University FX RT and WJP thank the European Research Council for support. WJP also thanks the Science and Technology Facilities Council.; Funding for SDSS-III has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation and the U.S. Department of Energy. The SDSS-III website is http://www.sdss3.org/.; SDSS-III is managed by the Astrophysical Research Consortium for the Participating Institutions of the SDSS-III Collaboration including the University of Arizona, the Brazilian Participation Group, Brookhaven National Laboratory, University of Cambridge, Carnegie Mellon University, University of Florida, the French Participation Group, the German Participation Group, Harvard University, the Instituto de Astrofisica de Canarias, the Michigan State/Notre Dame/JINA Participation Group, Johns Hopkins University, Lawrence Berkeley National Laboratory, Max Planck Institute for Astrophysics, Max Planck Institute for Extraterrestrial Physics, New Mexico State University, New York University, Ohio State University, Pennsylvania State University, University of Portsmouth, Princeton University, the Spanish Participation Group, University of Tokyo, University of Utah, Vanderbilt University, University of Virginia, University of Washington and Yale University. NR 99 TC 23 Z9 23 U1 0 U2 1 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUL PY 2012 VL 424 IS 1 BP 136 EP 156 DI 10.1111/j.1365-2966.2012.21177.x PG 21 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 970OE UT WOS:000306140600013 ER PT J AU Wetzel, AR Tinker, JL Conroy, C AF Wetzel, Andrew R. Tinker, Jeremy L. Conroy, Charlie TI Galaxy evolution in groups and clusters: star formation rates, red sequence fractions and the persistent bimodality SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE methods: statistical; galaxies: clusters: general; galaxies: evolution; galaxies: groups: general; galaxies: haloes; galaxies: star formation ID DIGITAL SKY SURVEY; COLOR-DENSITY RELATION; REDSHIFT SURVEY; STELLAR MASS; SATELLITE GALAXIES; ORBITAL PARAMETERS; DISTANT CLUSTERS; SPIRAL GALAXIES; DISK GALAXIES; DATA RELEASE AB Using galaxy group/cluster catalogues created from the Sloan Digital Sky Survey Data Release 7, we examine in detail the specific star formation rate (SSFR) distribution of satellite galaxies and its dependence on stellar mass, host halo mass and halo-centric radius. All galaxies, regardless of central satellite designation, exhibit a similar bimodal SSFR distribution, with a strong break at SSFR approximate to 10-11 yr-1 and the same high SSFR peak; in no regime is there ever an excess of galaxies in the green valley. Satellite galaxies are simply more likely to lie on the quenched (red sequence) side of the SSFR distribution. Furthermore, the satellite quenched fraction excess above the field galaxy value is nearly independent of galaxy stellar mass. An enhanced quenched fraction for satellites persists in groups with halo masses down to 3 x 1011 M? and increases strongly with halo mass and towards halo centre. We find no detectable quenching enhancement for galaxies beyond similar to 2 Rvir around massive clusters once these galaxies have been decomposed into centrals and satellites. These trends imply that (1) galaxies experience no significant environmental effects until they cross within similar to Rvir of a more massive host halo; (2) after this, star formation in active satellites continues to evolve in the same manner as active central galaxies for several Gyr; and (3) once begun, satellite star formation quenching occurs rapidly. These results place strong constraints on satellite-specific quenching mechanisms, as we will discuss further in companion papers. C1 [Wetzel, Andrew R.] Yale Univ, Dept Astron, New Haven, CT 06520 USA. [Tinker, Jeremy L.] NYU, Dept Phys, Ctr Cosmol & Particle Phys, New York, NY 10013 USA. [Conroy, Charlie] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Wetzel, AR (reprint author), Yale Univ, Dept Astron, New Haven, CT 06520 USA. EM andrew.wetzel@yale.edu OI Wetzel, Andrew/0000-0003-0603-8942 FU NSF; Alfred P. Sloan Foundation; National Science Foundation; U.S. Department of Energy; National Aeronautics and Space Administration; Japanese Monbukagakusho; Max Planck Society; Higher Education Funding Council for England; American Museum of Natural History; Astrophysical Institute Potsdam; University of Basel; University of Cambridge; Case Western Reserve University; University of Chicago; Drexel University; Fermilab; Institute for Advanced Study; Japan Participation Group; Johns Hopkins University; Joint Institute for Nuclear Astrophysics; Kavli Institute for Particle Astrophysics and Cosmology; Korean Scientist Group; Chinese Academy of Sciences (LAMOST); Los Alamos National Laboratory; Max Planck Institute for Astronomy (MPIA); Max Planck Institute for Astrophysics (MPA); New Mexico State University; Ohio State University; University of Pittsburgh; University of Portsmouth; Princeton University; United States Naval Observatory; University of Washington FX ARW acknowledges partial support through an NSF Graduate Research Fellowship and thanks the organizers, participants and staff of the Monsters Inc. workshop at the Kavli Institute for Theoretical Physics, supported in part by the NSF, where some of this work was completed. We thank Michael Blanton, David Hogg and collaborators for publicly releasing the NYU VAGC, as well as Jarle Brinchmann and the MPA-JHU collaboration for publicly releasing their spectral reductions. We thank Frank van den Bosch and Jarle Brinchmann for insightful conversations, as well as Frank van den Bosch and Martin White for comments on an early draft.; Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society and the Higher Education Funding Council for England. The SDSS website is http://www.sdss.org/. The SDSS is managed by the Astrophysical Research Consortium for the Participating Institutions. The Participating Institutions are the American Museum of Natural History, Astrophysical Institute Potsdam, University of Basel, University of Cambridge, Case Western Reserve University, University of Chicago, Drexel University, Fermilab, the Institute for Advanced Study, the Japan Participation Group, Johns Hopkins University, the Joint Institute for Nuclear Astrophysics, the Kavli Institute for Particle Astrophysics and Cosmology, the Korean Scientist Group, the Chinese Academy of Sciences (LAMOST), Los Alamos National Laboratory, the Max Planck Institute for Astronomy (MPIA), the Max Planck Institute for Astrophysics (MPA), New Mexico State University, Ohio State University, University of Pittsburgh, University of Portsmouth, Princeton University, the United States Naval Observatory and the University of Washington. NR 97 TC 128 Z9 128 U1 0 U2 3 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUL PY 2012 VL 424 IS 1 BP 232 EP 243 DI 10.1111/j.1365-2966.2012.21188.x PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 970OE UT WOS:000306140600020 ER PT J AU Ross, AJ Percival, WJ Sanchez, AG Samushia, L Ho, S Kazin, E Manera, M Reid, B White, M Tojeiro, R McBride, CK Xu, XY Wake, DA Strauss, MA Montesano, F Swanson, MEC Bailey, S Bolton, AS Dorta, AM Eisenstein, DJ Guo, H Hamilton, JC Nichol, RC Padmanabhan, N Prada, F Schlegel, DJ Magana, MV Zehavi, I Blanton, M Bizyaev, D Brewington, H Cuesta, AJ Malanushenko, E Malanushenko, V Oravetz, D Parejko, J Pan, KK Schneider, DP Shelden, A Simmons, A Snedden, S Zhao, GB AF Ross, Ashley J. Percival, Will J. Sanchez, Ariel G. Samushia, Lado Ho, Shirley Kazin, Eyal Manera, Marc Reid, Beth White, Martin Tojeiro, Rita McBride, Cameron K. Xu, Xiaoying Wake, David A. Strauss, Michael A. Montesano, Francesco Swanson, Molly E. C. Bailey, Stephen Bolton, Adam S. Montero Dorta, Antonio Eisenstein, Daniel J. Guo, Hong Hamilton, Jean-Christophe Nichol, Robert C. Padmanabhan, Nikhil Prada, Francisco Schlegel, David J. Magana, Mariana Vargas Zehavi, Idit Blanton, Michael Bizyaev, Dmitry Brewington, Howard Cuesta, Antonio J. Malanushenko, Elena Malanushenko, Viktor Oravetz, Daniel Parejko, John Pan, Kaike Schneider, Donald P. Shelden, Alaina Simmons, Audrey Snedden, Stephanie Zhao, Gong-bo TI The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: analysis of potential systematics SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE cosmology: observations; distance scale; large-scale structure of Universe ID DIGITAL SKY SURVEY; LUMINOUS RED GALAXIES; POWER-SPECTRUM ANALYSIS; SURVEY IMAGING DATA; EARLY DATA RELEASE; LARGE-SCALE BIAS; REDSHIFT SURVEY; COSMOLOGICAL IMPLICATIONS; ACOUSTIC-OSCILLATIONS; ANGULAR MASKS AB We analyse the density field of galaxies observed by the Sloan Digital Sky Survey (SDSS)-III Baryon Oscillation Spectroscopic Survey (BOSS) included in the SDSS Data Release Nine (DR9). DR9 includes spectroscopic redshifts for over 400 000 galaxies spread over a footprint of 3275 deg2. We identify, characterize and mitigate the impact of sources of systematic uncertainty on large-scale clustering measurements, both for angular moments of the redshift-space correlation function, ?l(s), and the spherically averaged power spectrum, P(k), in order to ensure that robust cosmological constraints will be obtained from these data. A correlation between the projected density of stars and the higher redshift (0.43 < z < 0.7) galaxy sample (the approximately constant stellar mass threshold CMASS sample) due to imaging systematics imparts a systematic error that is larger than the statistical error of the clustering measurements at scales s > 120 h-1 Mpc or k < 0.01 h Mpc-1. We find that these errors can be ameliorated by weighting galaxies based on their surface brightness and the local stellar density. The clustering of CMASS galaxies found in the Northern and Southern Galactic footprints of the survey generally agrees to within 2s. We use mock galaxy catalogues that simulate the CMASS selection function to determine that randomly selecting galaxy redshifts in order to simulate the radial selection function of a random sample imparts the least systematic error on ?l(s) measurements and that this systematic error is negligible for the spherically averaged correlation function, ?0. We find a peak in ?0 at s similar to 200 h-1 Mpc, with a corresponding feature with period similar to 0.03 h Mpc-1 in P(k), and find features at least as strong in 4.8 per cent of the mock galaxy catalogues, concluding this feature is likely to be a consequence of cosmic variance. The methods we recommend for the calculation of clustering measurements using the CMASS sample are adopted in companion papers that locate the position of the baryon acoustic oscillation feature, constrain cosmological models using the full shape of ?0 and measure the rate of structure growth. C1 [Ross, Ashley J.; Percival, Will J.; Samushia, Lado; Manera, Marc; Tojeiro, Rita; Nichol, Robert C.; Zhao, Gong-bo] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England. [Sanchez, Ariel G.; Montesano, Francesco] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. [Samushia, Lado] Ilia State Univ, Natl Abastumani Astrophys Observ, GE-1060 Tbilisi, Rep of Georgia. [Ho, Shirley; Reid, Beth; White, Martin; Bailey, Stephen; Schlegel, David J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Ho, Shirley] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA. [Kazin, Eyal] Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia. [White, Martin] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [White, Martin] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [McBride, Cameron K.; Swanson, Molly E. C.; Eisenstein, Daniel J.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Xu, Xiaoying] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. [Wake, David A.] Yale Univ, Yale Ctr Astron & Astrophys, New Haven, CT 06511 USA. [Strauss, Michael A.] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA. [Bolton, Adam S.] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA. [Montero Dorta, Antonio; Prada, Francisco] Inst Astrofis Andalucia CSIC, E-18080 Granada, Spain. [Guo, Hong; Zehavi, Idit] Case Western Reserve Univ, Dept Astron, Cleveland, OH 44106 USA. [Hamilton, Jean-Christophe; Magana, Mariana Vargas] Univ Paris 07, APC, CEA,Observ Paris, CNRS,IN2P3, Paris, France. [Padmanabhan, Nikhil; Cuesta, Antonio J.; Parejko, John] Yale Univ, Dept Phys, New Haven, CT 06520 USA. [Prada, Francisco] Campus Int Excellence UAM CSIC, E-28049 Madrid, Spain. [Prada, Francisco; Malanushenko, Viktor] Univ Autonoma Madrid, Inst Fis Teor, CSIC, E-28049 Madrid, Spain. [Blanton, Michael] NYU, Ctr Cosmol & Particle Phys, New York, NY 10003 USA. [Bizyaev, Dmitry; Brewington, Howard; Malanushenko, Elena; Oravetz, Daniel; Pan, Kaike; Shelden, Alaina; Simmons, Audrey; Snedden, Stephanie] Apache Point Observ, Sunspot, NM 88349 USA. [Schneider, Donald P.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA. [Schneider, Donald P.] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA. RP Ross, AJ (reprint author), Univ Portsmouth, Inst Cosmol & Gravitat, Dennis Sciama Bldg, Portsmouth PO1 3FX, Hants, England. EM Ashley.Ross@port.ac.uk RI Ho, Shirley/P-3682-2014; Guo, Hong/J-5797-2015; White, Martin/I-3880-2015; OI Ho, Shirley/0000-0002-1068-160X; Guo, Hong/0000-0003-4936-8247; White, Martin/0000-0001-9912-5070; Cuesta Vazquez, Antonio Jose/0000-0002-4153-9470 FU UK Science and Technology Facilities Council [ST/I001204/1]; Leverhulme Trust; European Research Council; NSF [AST-0707266, AST-0901965]; Alfred P. Sloan Foundation FX AJR is grateful to the UK Science and Technology Facilities Council for financial support through the grant ST/I001204/1. WJP is grateful for support from the UK Science and Technology Facilities Research Council, the Leverhulme Trust and the European Research Council. MAS acknowledges the support of NSF grant AST-0707266. MECS was supported by the NSF under Award No. AST-0901965.; Funding for SDSS-III has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation and the U.S. Department of Energy Office of Science. The SDSS-III website is http://www.sdss3.org/. NR 63 TC 96 Z9 96 U1 2 U2 6 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUL PY 2012 VL 424 IS 1 BP 564 EP 590 DI 10.1111/j.1365-2966.2012.21235.x PG 27 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 970OE UT WOS:000306140600048 ER PT J AU Novak, GS Jonsson, P Primack, JR Cox, TJ Dekel, A AF Novak, Gregory S. Jonsson, Patrik Primack, Joel R. Cox, Thomas J. Dekel, Avishai TI On galaxies and homology SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE methods: numerical; galaxies: fundamental parameters; galaxies: kinematics and dynamics; galaxies: structure ID INITIAL MASS FUNCTION; LENS ACS SURVEY; DIGITAL SKY SURVEY; ELLIPTIC GALAXIES; FUNDAMENTAL PLANE; DARK-MATTER; SCALING RELATIONS; 2-DIMENSIONAL KINEMATICS; DENSITY PROFILE; SPIRAL GALAXIES AB The definition of homology for single-component galaxies is clear, but for multicomponent (luminous and dark matter) galaxies there is some ambiguity. We attempt to clarify the situation by carefully separating the different concepts of homology that have been used to date. We argue that the most useful definition is that a set of galaxies is homologous if they are the same in all respects up to a set of three dimensional scaling constants which may differ from one galaxy to the next. Noting that we are free to choose the dimensional constants, we find that a set of hydrodynamic simulated galaxy merger remnants is significantly closer to homologous when the dimensional length constant is taken to be the radius containing equal amounts of dark and baryonic matter rather than the usual observationally motivated choice of the baryonic half-mass radius. Once the correct dimensional scaling constants are used, the stellar velocity dispersion anisotropy is essentially the sole source of the variation in the kinematic structure of these simulated merger remnants. In order to facilitate the use of these scaling constants to analyse observed galaxies, we calculated the relationship between our preferred dimensional scaling constants and the typical observationally accessible quantities. C1 [Novak, Gregory S.] CNRS, Observ Paris, LERMA, F-75014 Paris, France. [Novak, Gregory S.] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA. [Novak, Gregory S.] Univ Calif Santa Cruz, UCO Lick Observ, Santa Cruz, CA 95064 USA. [Jonsson, Patrik] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Jonsson, Patrik; Primack, Joel R.] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA. [Cox, Thomas J.] Carnegie Observ, Pasadena, CA 91101 USA. [Dekel, Avishai] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel. RP Novak, GS (reprint author), CNRS, Observ Paris, LERMA, 61 Av Observ, F-75014 Paris, France. EM greg.novak@obspm.fr; pjonsson@cfa.harvard.edu; joel@scipp.ucsc.edu; tcox@obs.carnegiescience.edu; dekel@phys.huji.ac.il FU Princeton University Council on Science and Technology; W.M. Keck Foundation; NASA through Space Telescopes Research Institute [HST-AR-11758, NAS5-26555] FX We thank Michele Cappellari for useful discussions. GSN acknowledges the support of the Princeton University Council on Science and Technology. PJ acknowledges support by a grant from the W.M. Keck Foundation and by programme HST-AR-11758, provided by NASA through a grant from the Space Telescopes Research Institute, which is operated by the Association of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555. NR 57 TC 3 Z9 4 U1 0 U2 0 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0035-8711 EI 1365-2966 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUL PY 2012 VL 424 IS 1 BP 635 EP 648 DI 10.1111/j.1365-2966.2012.21242.x PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 970OE UT WOS:000306140600053 ER PT J AU Guggenberger, E Kolenberg, K Nemec, JM Smolec, R Benko, JM Ngeow, CC Cohen, JG Sesar, B Szabo, R Catelan, M Moskalik, P Kinemuchi, K Seader, SE Smith, JC Tenenbaum, P Kjeldsen, H AF Guggenberger, E. Kolenberg, K. Nemec, J. M. Smolec, R. Benko, J. M. Ngeow, C. -C. Cohen, J. G. Sesar, B. Szabo, R. Catelan, M. Moskalik, P. Kinemuchi, K. Seader, S. E. Smith, J. C. Tenenbaum, P. Kjeldsen, H. TI The complex case of V445 Lyr observed with Kepler: two Blazhko modulations, a non-radial mode, possible triple mode RR Lyrae pulsation, and more SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE asteroseismology; methods: data analysis; techniques: photometric; stars: individual: KIC 6186029 (V445 Lyr); stars: individual: CoRoT 105288363; stars: variables: RR Lyrae ID GRAVITATIONAL LENSING EXPERIMENT.; LARGE-MAGELLANIC-CLOUD; OGLE-III CATALOG; LIGHT CURVES; STARS; SCIENCE; SPACE AB Rapid and strong changes in the Blazhko modulation of RR Lyrae stars, as have recently been detected in high-precision satellite data, have become a crucial topic in finding an explanation of the long-standing mystery of the Blazhko effect. We present here an analysis of the most extreme case detected so far, the RRab star V445 Lyr (KIC 6186029) which was observed with the Kepler space mission. V445 Lyr shows very strong cycle-to-cycle changes in its Blazhko modulation, which are caused by both a secondary long-term modulation period and irregular variations. In addition to the complex Blazhko modulation, V445 Lyr also shows a rich spectrum of additional peaks in the frequency range between the fundamental pulsation and the first harmonic. Among those peaks, the second radial overtone could be identified, which, combined with a metallicity estimate of [Fe/H] =-2.0 dex from spectroscopy, allowed us to constrain the mass (0.550.65 M?) and luminosity (4050 L?) of V445 Lyr through theoretical Petersen diagrams. A non-radial mode and possibly the first overtone are also excited. Furthermore, V445 Lyr shows signs of the period-doubling phenomenon and a long-term period change. A detailed Fourier analysis along with a study of the O - C variation of V445 Lyr is presented, and the origin of the additional peaks and possible causes of the changes in the Blazhko modulation are discussed. The results are then put into context with those of the only other star with a variable Blazhko effect for which a long enough set of high-precision continuous satellite data has been published so far, the CoRoT star 105288363. C1 [Guggenberger, E.; Smolec, R.] Univ Vienna, Inst Astron, A-1180 Vienna, Austria. [Kolenberg, K.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Kolenberg, K.] Inst Sterrenkunde, B-3001 Heverlee, Belgium. [Nemec, J. M.] Camosun Coll, Dept Phys & Astron, Victoria, BC V8P 5J2, Canada. [Smolec, R.; Moskalik, P.] Polish Acad Sci, Copernicus Astron Ctr, PL-00716 Warsaw, Poland. [Benko, J. M.; Szabo, R.] Konkoly Observ Budapest, Res Ctr Astron & Earth Sci, H-1525 Budapest, Hungary. [Ngeow, C. -C.] Natl Cent Univ, Grad Inst Astron, Jhongli 32001, Taoyuan County, Taiwan. [Cohen, J. G.; Sesar, B.] CALTECH, Pasadena, CA 91125 USA. [Catelan, M.] Pontificia Univ Catolica Chile, Fac Fis, Dept Astron & Astrophys, Santiago 7820436, Chile. [Seader, S. E.; Smith, J. C.; Tenenbaum, P.] NASA, SETI Inst, Ames Res Ctr, Moffett Field, CA 94035 USA. [Kjeldsen, H.] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark. [Kinemuchi, K.] NASA, Ames Res Ctr, Bay Area Environm Res Inst, Moffett Field, CA 94035 USA. RP Guggenberger, E (reprint author), Univ Vienna, Inst Astron, Turkenschanzstr 17, A-1180 Vienna, Austria. EM elisabeth.guggenberger@univie.ac.at RI Smolec, Radoslaw/F-1435-2013; OI Smolec, Radoslaw/0000-0001-7217-4884; Benko, Jozsef/0000-0003-3851-6603; Szabo, Robert/0000-0002-3258-1909 FU NASA's Science Mission Directorate; Austrian Science Fund (FWF) [P19962-N16]; European Commission [269194]; Lendulet programme of the Hungarian Academy of Sciences; Hungarian OTKA [K83790, MB08C 81013]; Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences; National Science Council (of Taiwan) [NSC 98-2112-M-008-013-MY3]; NSF [AST-0908139]; Ministry for the Economy, Development, and Tourism's Programa Inicativa Cientifica Milenio [P07-021-F]; Proyecto Basal [PFB-06/2007]; FONDAP Centro de Astrofisica [15010003]; Proyecto FONDECYT Regular [1110326]; Proyecto Anillo [ACT-86] FX Funding for this discovery mission is provided by NASA's Science Mission Directorate. EG acknowledges support from the Austrian Science Fund (FWF), project number P19962-N16. KK is presently a Marie Curie Fellow (IOF-255267). The research leading to these results has received funding from the European Commission's Seventh Framework Programme (FP7/2007-2013) under grant agreement no. 269194 (IRSES/ASK). RSz and JMB are supported by the Lendulet programme of the Hungarian Academy of Sciences and the Hungarian OTKA grants K83790 and MB08C 81013. RSz was supported by the Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences. C-CN thanks the funding from the National Science Council (of Taiwan) under the contract NSC 98-2112-M-008-013-MY3. We acknowledge the assistance of the queue observers, Chi-Sheng Lin and Hsiang-Yao Hsiao from the Lulin Observatory, and we thank Jhen-kuei Guo and Neelam Panwar for coordinating observations at the Tenagra II Observatory. JGC and BS are grateful to NSF grant AST-0908139 for partial support. Support for MC is provided by the Ministry for the Economy, Development, and Tourism's Programa Inicativa Cientifica Milenio through grant P07-021-F, awarded to The Milky Way Millennium Nucleus; by Proyecto Basal PFB-06/2007; by FONDAP Centro de Astrofisica 15010003; by Proyecto FONDECYT Regular #1110326; and by Proyecto Anillo ACT-86. The authors gratefully acknowledge the entire Kepler team, whose outstanding efforts have made these results possible. NR 51 TC 36 Z9 37 U1 0 U2 3 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUL PY 2012 VL 424 IS 1 BP 649 EP 665 DI 10.1111/j.1365-2966.2012.21244.x PG 17 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 970OE UT WOS:000306140600054 ER PT J AU Wilcock, LA Ward-Thompson, D Kirk, JM Stamatellos, D Whitworth, A Battersby, C Elia, D Fuller, GA DiGiorgio, A Griffin, MJ Molinari, S Martin, P Mottram, JC Peretto, N Pestalozzi, M Schisano, E Smith, HA Thompson, MA AF Wilcock, L. A. Ward-Thompson, D. Kirk, J. M. Stamatellos, D. Whitworth, A. Battersby, C. Elia, D. Fuller, G. A. DiGiorgio, A. Griffin, M. J. Molinari, S. Martin, P. Mottram, J. C. Peretto, N. Pestalozzi, M. Schisano, E. Smith, H. A. Thompson, M. A. TI Isolated starless cores in infrared dark clouds in the Hi-GAL survey SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE stars: formation ID RADIATIVE-TRANSFER; PROTOSTELLAR CORES; PRESTELLAR CORES; GALACTIC PLANE; MILKY-WAY; HERSCHEL; PROTOSTARS; INSTRUMENT; CLUSTERS; DENSITY AB In a previous paper, we identified cores within infrared dark clouds. We regarded those without embedded sources as the least evolved and labelled them starless. Here we identify the most isolated starless cores and model them using a three-dimensional multiwavelength Monte Carlo radiative transfer code. We derive the cores physical parameters and discuss the relation between the mass, temperature, density, size and the surrounding interstellar radiation field (ISRF) for the cores. The masses of the cores were found not to correlate with their radial size or central density. The temperature at the surface of a core was seen to depend almost entirely on the level of the ISRF surrounding the core. No correlation was found between the temperature at the centre of a core and its local ISRF. This was seen to depend, instead, on the density and mass of the core. C1 [Wilcock, L. A.; Ward-Thompson, D.; Kirk, J. M.; Stamatellos, D.; Whitworth, A.; Griffin, M. J.] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales. [Battersby, C.] Univ Colorado, Ctr Astrophys & Space Astron, Boulder, CO 80309 USA. [Elia, D.; DiGiorgio, A.; Molinari, S.; Pestalozzi, M.; Schisano, E.] CNR, Inst Fis Spazio Interplanetario, I-00133 Rome, Italy. [Fuller, G. A.] Univ Manchester, Sch Phys & Astron, Jodrell Bank, Ctr Astrophys, Manchester M13 9PL, Lancs, England. [Martin, P.] Univ Toronto, Canadian Inst Theoret Astrophys, Toronto, ON M5S 3H8, Canada. [Mottram, J. C.] Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England. [Mottram, J. C.] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands. [Peretto, N.] Univ Paris Diderot, Lab AIM, CEA DSM, CNRS,IFRU Serv Astrophys,CE Saclay, F-91191 Gif Sur Yvette, France. [Smith, H. A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Thompson, M. A.] Univ Hertfordshire, Ctr Astrophys Res, Sci & Technol Res Inst, Hatfield AL10 9AB, Herts, England. RP Wilcock, LA (reprint author), Cardiff Univ, Sch Phys & Astron, Queens Bldg, Cardiff CF24 3AA, S Glam, Wales. EM lucy.wilcock@astro.cf.ac.uk RI Molinari, Sergio/O-4095-2016; OI Molinari, Sergio/0000-0002-9826-7525; Elia, Davide/0000-0002-9120-5890; Stamatellos, Dimitris/0000-0002-4502-8344 FU STFC; CSA (Canada); NAOC (China); CEA (France); CNES (France); CNRS (France); ASI (Italy); MCINN (Spain); SNSB (Sweden); STFC (UK); NASA (USA); BMVIT (Austria); ESA-PRODEX (Belgium); CEA/CNES (France); DLR (Germany); ASI/INAF (Italy); CICYT/MCYT (Spain) FX LAW gratefully acknowledges STFC studentship funding. SPIRE was developed by a consortium of institutes led by Cardiff University (UK) and including University Lethbridge (Canada); NAOC (China); CEA, LAM (France); IFSI, University Padua (Italy); IAC (Spain); Stockholm Observatory (Sweden); Imperial College London, RAL, UCL-MSSL, UKATC, University Sussex (UK) and Caltech, JPL, NHSC, University Colorado (USA). This development has been supported by national funding agencies: CSA (Canada); NAOC (China); CEA, CNES, CNRS (France); ASI (Italy); MCINN (Spain); SNSB (Sweden); STFC (UK) and NASA (USA). PACS was developed by a consortium of institutes led by MPE (Germany) and including UVIE (Austria); KU Leuven, CSL, IMEC (Belgium); CEA, LAM (France); MPIA (Germany); INAF-IFSI/OAA/OAP/OAT, LENS, SISSA (Italy) and IAC (Spain). This development has been supported by the funding agencies BMVIT (Austria), ESA-PRODEX (Belgium), CEA/CNES (France), DLR (Germany), ASI/INAF (Italy) and CICYT/MCYT (Spain). HIPE is a joint development by the Herschel Science Ground Segment Consortium, consisting of ESA, the NASA Herschel Science Center, and the HIFI, PACS and SPIRE consortia. NR 45 TC 9 Z9 9 U1 0 U2 0 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUL PY 2012 VL 424 IS 1 BP 716 EP 727 DI 10.1111/j.1365-2966.2012.21264.x PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 970OE UT WOS:000306140600058 ER PT J AU Beckman, NG Neuhauser, C Muller-Landau, HC AF Beckman, Noelle G. Neuhauser, Claudia Muller-Landau, Helene C. TI The interacting effects of clumped seed dispersal and distance- and density-dependent mortality on seedling recruitment patterns SO JOURNAL OF ECOLOGY LA English DT Article DE aggregated distributions; Bruchidae; dispersal; diversity maintenance; early plant recruitment; Janzen-Connell; oomycetes; plant-herbivore interactions; spatial patterns; vertebrate-dispersed seeds ID PROCESSES MAINTAIN DIVERSITY; TROPICAL FORESTS; SPECIES-DIVERSITY; CALLOSOBRUCHUS-CHINENSIS; SPATIAL-PATTERNS; PLANT-DISEASE; TREE; MODELS; PHYTOPHTHORA; PREDATION AB 1. Seed dispersal and natural enemies both influence spatial patterns of seedlings, which in turn influence future abiotic and biotic interactions, with consequences for plant populations, distributions and diversity. Clumped seed deposition is common, especially for vertebrate-dispersed seeds, and has the potential to significantly affect interactions with density-responsive enemies, yet has received relatively little attention. 2. We used spatially explicit simulation models to examine how different patterns of seed dispersal and natural enemy attack structure seedling spatial patterns. We simulated clumped seed dispersal by combining a two-dimensional Students T dispersal kernel for expected seed rain with a negative binomial distribution for seed deposition. We based our models for seed mortality on published data reflecting differing life histories of insect seed predators and soil-borne pathogens. We varied dispersal distance, degree of clumping, type of enemy, enemy dispersal distance and fecundity among simulations. 3. Under insect seed predation, seeds escaped predation by dispersing longer distances than insects, resulting in JanzenConnell patterns in which seedling recruitment peaks at intermediate distances. When insects dispersed longer distances than seeds, higher seed densities near the tree satiated insects, resulting in McCanny patterns in which seed deposition, survivorship and seedling establishment all decrease with distance from the parent tree. Total seedling establishment was lowest when insects and seeds dispersed similar distances. 4. Under pathogen attack, JanzenConnell patterns predominated except when seedling survival was virtually zero or one everywhere, or in the case where pathogen dispersal distances exceeded seed dispersal distances, producing Hubbell patterns in which seed deposition and seedling establishment decrease with distance, though survivorship increases. 5. Clumped seed deposition increased the probability of seedling establishment under both insect seed predation and pathogen attack as it led to local satiation of insect seed predators and made it harder for pathogen distributions to track seeds. 6. Synthesis. Our modelling study suggests that the relative dispersal distances of seeds and natural enemies are crucial to determining establishment rates and spatial patterns of seedlings. Better characterization of the movement and natural histories of natural enemies is critical to improving our understanding of seedling distributions and plantenemy interactions. C1 [Beckman, Noelle G.; Muller-Landau, Helene C.] Univ Minnesota Twin Cities, St Paul, MN 55108 USA. [Neuhauser, Claudia] Univ Minnesota, Rochester, MN 55904 USA. [Muller-Landau, Helene C.] Smithsonian Trop Res Inst, Dpo, AA 34002 USA. RP Beckman, NG (reprint author), Univ Nebraska, Sch Biol Sci, 348 Manter Hall, Lincoln, NE 68588 USA. EM nbeckman2@unl.edu RI Beckman, Noelle/E-5554-2011 OI Beckman, Noelle/0000-0001-5822-0610 FU National Science Foundation Graduate Research Fellowship; UMN Graduate School Doctoral Dissertation Fellowship; UMN EEB Block Grant; Packard Fellowship in Science and Engineering; HSBC Climate Partnership FX We thank Jim Dalling, Linda Kinkel, George Heimpel and David Tilman for insightful discussions and two anonymous reviewers for helpful suggestions in revising the manuscript. We gratefully acknowledge the support of a National Science Foundation Graduate Research Fellowship (N.G.B.), UMN Graduate School Doctoral Dissertation Fellowship (N.G.B.), UMN EEB Block Grant (N.G.B.), Packard Fellowship in Science and Engineering (H. C. M.) and the HSBC Climate Partnership (H.C.M.). NR 64 TC 16 Z9 19 U1 8 U2 115 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0022-0477 J9 J ECOL JI J. Ecol. PD JUL PY 2012 VL 100 IS 4 BP 862 EP 873 DI 10.1111/j.1365-2745.2012.01978.x PG 12 WC Plant Sciences; Ecology SC Plant Sciences; Environmental Sciences & Ecology GA 959TE UT WOS:000305335400003 ER PT J AU Lin, LX Comita, LS Zheng, Z Cao, M AF Lin, Luxiang Comita, Liza S. Zheng, Zheng Cao, Min TI Seasonal differentiation in density-dependent seedling survival in a tropical rain forest SO JOURNAL OF ECOLOGY LA English DT Article DE compensatory trend; density dependence; Janzen-Connell hypothesis; mixed models; plant-plant interactions; tropical rain forest; water availability ID SPECIES SHADE TOLERANCE; PLANT-SOIL FEEDBACK; TREE SEEDLINGS; NEOTROPICAL FOREST; LOCAL NEIGHBORHOOD; SOUTHWEST CHINA; CANOPY TREE; FOG-DRIP; GROWTH; XISHUANGBANNA AB 1. Density-dependent survival is prevalent in tropical forests and is recognized as a potentially important mechanism for maintaining tree species diversity. However, there is little knowledge of how density dependence changes in fluctuating environments. 2. Across the 20-ha Xishuangbanna tropical seasonal rain forest dynamics plot in southwest China, which has distinct dry and wet seasons, we monitored seedling survival in 453 1-m2 quadrats over 2 years. Density dependence was assessed using generalized linear mixed models with crossed random effects. 3. When pooling all species at the community level, there were strong negative effects of conspecific tree neighbours on seedling survival over the dry-season, wet-season and 2-year intervals. The proportion of conspecific seedling neighbours had a significant negative effect in the dry season, but not in the wet season. 4. At the species level, the effects of conspecific tree and seedling neighbours varied widely among species in the community and were significantly positively related to population basal area in the community over the dry-season interval. In contrast, over the wet-season interval, the effects of conspecific tree and seedling neighbours did not significantly vary among species in the community. Overall community- and species-level results suggest that local-scale negative density dependence (NDD) tends to be stronger in the dry than wet season in the Xishuangbanna tropical forest. 5. At the scale of the 20-ha plot, we found a community compensatory trend (CCT), in which rare species had relatively higher seedling survival than common species in both the wet and dry seasons. A positive association between potential NDD and population basal area suggests that the CCT results from local-scale NDD, specifically because of negative effects of conspecific tree neighbours. 6. Synthesis. Our results demonstrate that the strength of density-dependent seedling survival can vary between seasons and among species in tropical forests. Future research is needed to assess the underlying mechanisms of this temporal and interspecific variation in NDD and its consequences for species coexistence and community composition. C1 [Lin, Luxiang; Zheng, Zheng; Cao, Min] Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Kunming 650223, Peoples R China. [Comita, Liza S.] Ohio State Univ, Dept Ecol Evolut & Organismal Biol, Columbus, OH 43210 USA. [Comita, Liza S.] Smithsonian Trop Res Inst, Balboa, Ancon, Panama. RP Lin, LX (reprint author), Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Kunming 650223, Peoples R China. EM linluxa@xtbg.ac.cn FU National Natural Science Foundation of China [31000201]; National Science & Technology Pillar Program from the Ministry of Environmental Protection of China [2008BAC39B02]; National Center for Ecological Analysis and Synthesis; NSF [EF-0553768]; University of California, Santa Barbara; State of California FX This study was funded by the National Natural Science Foundation of China (31000201) and the National Science & Technology Pillar Program from the Ministry of Environmental Protection of China (2008BAC39B02). LSC acknowledges the support of the National Center for Ecological Analysis and Synthesis, a centre funded by NSF (Grant #EF-0553768), the University of California, Santa Barbara, and the State of California. We thank Xiaoliang Li, Jiu Ma, Wenfu Zhang Xiaobao Deng, Shishun Zhou and Hong Wang for their assistance with seedling censuses and species identification. We thank all the people who have contributed to the establishment of the 20-ha Xishuangbanna tropical seasonal rain forest dynamics plot. Logistical support was provided by Xishuangbanna Station of Tropical Rainforest Ecosystem Studies (National Forest Ecosystem Research Station at Xishuangbanna), Chinese Academy of Sciences. We thank David Burslem, Calum Brown, Rich Kobe, Robin Chazdon and Danae Rozendaal for critical comments on the manuscript. NR 60 TC 27 Z9 37 U1 5 U2 82 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0022-0477 J9 J ECOL JI J. Ecol. PD JUL PY 2012 VL 100 IS 4 BP 905 EP 914 DI 10.1111/j.1365-2745.2012.01964.x PG 10 WC Plant Sciences; Ecology SC Plant Sciences; Environmental Sciences & Ecology GA 959TE UT WOS:000305335400007 ER PT J AU Parr, CS Guralnick, R Cellinese, N Page, RDM AF Parr, Cynthia S. Guralnick, Robert Cellinese, Nico Page, Roderic D. M. TI Evolutionary informatics: unifying knowledge about the diversity of life (vol 27, pg 94, 2012) SO TRENDS IN ECOLOGY & EVOLUTION LA English DT Correction C1 [Parr, Cynthia S.] Smithsonian Inst, Natl Museum Nat Hist, Washington, DC 20013 USA. [Guralnick, Robert] Univ Colorado, Museum Nat Hist, Boulder, CO 80309 USA. [Guralnick, Robert] Univ Colorado, Dept Ecol & Evolutionary Biol, Boulder, CO 80309 USA. [Cellinese, Nico] Univ Florida, Florida Museum Nat Hist, Gainesville, FL 32611 USA. [Page, Roderic D. M.] Univ Glasgow, Inst Biodivers Anim Hlth & Comparat Med, Coll Med Vet & Life Sci, Glasgow G12 8QQ, Lanark, Scotland. RP Parr, CS (reprint author), Smithsonian Inst, Natl Museum Nat Hist, POB 37012,MRC 106, Washington, DC 20013 USA. RI Parr, Cynthia/E-8013-2010 OI Parr, Cynthia/0000-0002-8870-7099 NR 1 TC 0 Z9 0 U1 0 U2 16 PU ELSEVIER SCIENCE LONDON PI LONDON PA 84 THEOBALDS RD, LONDON WC1X 8RR, ENGLAND SN 0169-5347 J9 TRENDS ECOL EVOL JI Trends Ecol. Evol. PD JUL PY 2012 VL 27 IS 7 BP 414 EP 414 DI 10.1016/j.tree.2012.05.005 PG 1 WC Ecology; Evolutionary Biology; Genetics & Heredity SC Environmental Sciences & Ecology; Evolutionary Biology; Genetics & Heredity GA 973WF UT WOS:000306389900009 ER PT J AU Schroll-Guz, S AF Schroll-Guz, Savannah TI Political Handbook of the World, 2012 SO LIBRARY JOURNAL LA English DT Book Review C1 [Schroll-Guz, Savannah] Smithsonian Inst Libs, Washington, DC USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU REED BUSINESS INFORMATION PI NEW YORK PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010 USA SN 0363-0277 J9 LIBR J JI Libr. J. PD JUL PY 2012 VL 137 IS 12 BP 110 EP 110 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA 972TG UT WOS:000306302500217 ER PT J AU Nardini, E Fabian, AC Walton, DJ AF Nardini, E. Fabian, A. C. Walton, D. J. TI Investigating the reflection contribution to the X-ray emission of Ton S180 SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE galaxies: active; galaxies: individual: Ton S180; X-rays: galaxies ID ACTIVE GALACTIC NUCLEI; BLACK-HOLE SPIN; SEYFERT 1 GALAXIES; XMM-NEWTON; SPECTRAL PROPERTIES; FAIRALL 9; LINE; SOFT; EXCESS; ACCRETION AB There is now growing evidence that the soft X-ray excess is almost ubiquitous among unobscured active galaxies. In spite of the various interpretations that have been considered in the past few years, the nature of this foremost spectral feature is not firmly established yet. In this context, we review from a reflection perspective the three highest quality X-ray observations of the narrow-line type 1 Seyfert galaxy Tonantzintla (Ton) S180, obtained by XMMNewton and Suzaku. The X-ray spectrum of Ton S180 shows only moderate variations over a time span of several years, suggesting that the same physical process accounts for the bulk of the broad-band X-ray emission at the different epochs, and that the properties of the X-ray source are fairly stable. We have successfully applied in our spectral analysis a dual-reflector model, consisting of two separate components: one arises from the surface of the accretion disc, is highly ionized and blurred by relativistic effects; the other is cold, quite faint and can be associated with a distant reprocessor. Due to the strength and the nearly power-law shape of its soft excess emission, Ton S180 is one of the most challenging sources to test the X-ray reflection scenario. In this work we provide a clear illustration of the great potential and spectral flexibility of blurred reflection models, while discussing some of their current limitations and possible shortcomings. C1 [Nardini, E.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Fabian, A. C.; Walton, D. J.] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England. RP Nardini, E (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM enardini@cfa.harvard.edu RI XRAY, SUZAKU/A-1808-2009 FU NASA [NNX10AF50G, GO0-11017X] FX The authors would like to thank the anonymous referee for providing helpful comments. EN acknowledges the financial support from NASA grants NNX10AF50G and GO0-11017X. ACF thanks the Royal Society. DJW acknowledges the financial support provided by the STFC. NR 64 TC 6 Z9 8 U1 0 U2 0 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0035-8711 EI 1365-2966 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUL PY 2012 VL 423 IS 4 BP 3299 EP 3307 DI 10.1111/j.1365-2966.2012.21123.x PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 968SB UT WOS:000306003600022 ER PT J AU Jonker, PG Miller-Jones, JCA Homan, J Tomsick, J Fender, RP Kaaret, P Markoff, S Gallo, E AF Jonker, P. G. Miller-Jones, J. C. A. Homan, J. Tomsick, J. Fender, R. P. Kaaret, P. Markoff, S. Gallo, E. TI The black hole candidate MAXI J1659-152 in and towards quiescence in X-ray and radio SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE accretion; accretion discs; binaries: general; stars: individual: MAXI J1659-152; X-rays: binaries ID LOW/HARD STATE; MULTIWAVELENGTH OBSERVATIONS; OUTBURST DECAY; GRO J1655-40; HARD STATE; GX 339-4; BINARIES; MASS; A0620-00; SPECTROSCOPY AB In this paper we report on Expanded Very Large Array radio and Chandra and Swift X-ray observations of the outburst decay of the transient black hole candidate MAXI J1659152 in 2011. We discuss the distance to the source taking the high inclination into account and conclude that the source distance is probably 6 +/- 2 kpc. The lowest observed flux corresponds to a luminosity of erg s-1. This, together with the orbital period of 2.4 h reported in the literature, suggests that the quiescent X-ray luminosity is higher than predicted on the basis of the orbital periodquiescent X-ray luminosity relationship. It is more in line with that expected for a neutron star, although the outburst spectral and timing properties reported in the literature strongly suggest that MAXI J1659152 harbours a black hole. This conclusion is subject to confirmation of the lowest observed flux as the quiescent flux. The relation between the accretion and ejection mechanisms can be studied using the observed correlation between the radio and X-ray luminosities as these evolve over an outburst. We determine the behaviour of MAXI J1659152 in the radioX-ray diagram at low X-ray luminosities using the observations reported in this paper and at high X-ray luminosities using values reported in the literature. At high X-ray luminosities, the source lies closer to the sources that follow a correlation index steeper than 0.60.7. However, when compared to other sources that follow a steeper correlation index, the X-ray luminosity in MAXI J1659152 is also lower. The latter can potentially be explained by the high inclination of MAXI J1659152 if the X-ray emission comes from close to the source and the radio emission is originating in a more extended region. However, it is probable that the source was not in the canonical low-hard state during these radio observations and this may affect the behaviour of the source as well. At intermediate X-ray luminosities, the source makes the transition from the radio underluminous sources in the direction of the relation traced by the standard correlation similar to what has been reported for H 1743-322 in the literature. However, MAXI J1659152 remains underluminous with respect to this standard correlation. C1 [Jonker, P. G.] SRON, Netherlands Inst Space Res, NL-3584 CA Utrecht, Netherlands. [Jonker, P. G.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Jonker, P. G.] Radboud Univ Nijmegen, Dept Astrophys IMAPP, NL-6500 GL Nijmegen, Netherlands. [Miller-Jones, J. C. A.] Curtin Univ Technol, Int Ctr Radio Astron Res, Perth, WA 6845, Australia. [Homan, J.] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA. [Tomsick, J.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA. [Fender, R. P.] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England. [Kaaret, P.] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA. [Markoff, S.] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1090 GE Amsterdam, Netherlands. [Gallo, E.] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA. RP Jonker, PG (reprint author), SRON, Netherlands Inst Space Res, Sorbonnelaan 2, NL-3584 CA Utrecht, Netherlands. EM p.jonker@sron.nl RI Miller-Jones, James/B-2411-2013 OI Miller-Jones, James/0000-0003-3124-2814 FU National Aeronautics and Space Administration through Chandra [GO0-11058A]; National Aeronautics Space Administration [NAS8-03060] FX PGJ acknowledges support from a VIDI grant from the Netherlands Organisation for Scientific Research. Support for this work was provided by the National Aeronautics and Space Administration through Chandra Award Number GO0-11058A issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics Space Administration under contract NAS8-03060. This research has made use of the SIMBAD data base, operated at CDS, Strasbourg, France, of NASA's Astrophysics Data System Bibliographic Services, of SAOImage DS9, developed by Smithsonian Astrophysical Observatory, of software provided by the Chandra X-ray Center (CXC) in the application packages CIAO, and of the XRT Data Analysis Software (XRTDAS) developed under the responsibility of the ASI Science Data Center (ASDC), Italy. NR 60 TC 28 Z9 28 U1 0 U2 1 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUL PY 2012 VL 423 IS 4 BP 3308 EP 3315 DI 10.1111/j.1365-2966.2012.21116.x PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 968SB UT WOS:000306003600023 ER PT J AU Vogelsberger, M Zavala, J Loeb, A AF Vogelsberger, Mark Zavala, Jesus Loeb, Abraham TI Subhaloes in self-interacting galactic dark matter haloes SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE methods: numerical; dark matter ID DWARF SPHEROIDAL GALAXIES; LAMBDA-CDM; SATELLITE GALAXIES; DENSITY PROFILES; SIMULATIONS; CONSTRAINTS; POPULATION; COSMOLOGY; CLUSTER; MILKY AB We present N-body simulations of a new class of self-interacting dark matter models, which do not violate any astrophysical constraints due to a non-power-law velocity dependence of the transfer cross-section which is motivated by a Yukawa-like new gauge boson interaction. Specifically, we focus on the formation of a Milky-Way-like dark matter halo taken from the Aquarius project and resimulate it for a couple of representative cases in the allowed parameter space of this new model. We find that for these cases, the main halo only develops a small core (similar to 1 kpc) followed by a density profile identical to that of the standard cold dark matter scenario outside of that radius. Neither the subhalo mass function nor the radial number density of subhaloes is altered in these models but there is a significant change in the inner density structure of subhaloes resulting in the formation of a large density core. As a consequence, the inner circular velocity profiles of the most massive subhaloes differ significantly from the cold dark matter predictions and we demonstrate that they are compatible with the observational data of the brightest Milky Way dwarf spheroidals (dSphs) in such a velocity-dependent self-interacting dark matter scenario. Specifically, and contrary to the cold dark matter case, there are no subhaloes that are more concentrated than what is inferred from the kinematics of the Milky Way dSphs. We conclude that these models offer an interesting alternative to the cold dark matter model that can reduce the recently reported tension between the brightest Milky Way satellites and the dense subhaloes found in cold dark matter simulations. C1 [Vogelsberger, Mark; Loeb, Abraham] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Zavala, Jesus] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada. [Zavala, Jesus] Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada. RP Vogelsberger, M (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM mvogelsberger@cfa.harvard.edu RI Zavala Franco, Jesus/M-5152-2014 OI Zavala Franco, Jesus/0000-0003-4442-908X FU University of Waterloo; Perimeter Institute for Theoretical Physics; Government of Canada through Industry Canada; Province of Ontario through the Ministry of Research Innovation; CITA National Fellowship; NSF [AST-0907890]; NASA [NNX08AL43G, NNA09DB30A] FX The simulations in this paper were run on the Odyssey cluster supported by the FAS Science Division Research Computing Group at Harvard University. We thank Volker Springel for giving us access to GADGET-3 and Tracy Slatyer and Douglas Finkbeiner for useful discussions. We also thank Matthew Walker, Simon D. M. White and the referee Naoki Yoshida for useful comments that improved the paper. JZ is supported by the University of Waterloo and the Perimeter Institute for Theoretical Physics. Research at Perimeter Institute is supported by the Government of Canada through Industry Canada and by the Province of Ontario through the Ministry of Research & Innovation. JZ acknowledges financial support by a CITA National Fellowship. This work was supported in part by NSF grant AST-0907890 and NASA grants NNX08AL43G and NNA09DB30A (for AL). NR 62 TC 160 Z9 160 U1 0 U2 0 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUL PY 2012 VL 423 IS 4 BP 3740 EP 3752 DI 10.1111/j.1365-2966.2012.21182.x PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 968SB UT WOS:000306003600057 ER PT J AU Cheesman, AW Turner, BL Reddy, KR AF Cheesman, Alexander W. Turner, Benjamin L. Reddy, K. Ramesh TI Soil Phosphorus Forms along a Strong Nutrient Gradient in a Tropical Ombrotrophic Wetland SO SOIL SCIENCE SOCIETY OF AMERICA JOURNAL LA English DT Article ID P-31 NMR-SPECTROSCOPY; MAGNETIC-RESONANCE-SPECTROSCOPY; MICROBIAL BIOMASS PHOSPHORUS; CHANGUINOLA PEAT DEPOSIT; ORGANIC PHOSPHORUS; LAKE-SEDIMENTS; INORGANIC POLYPHOSPHATE; SWAMP FOREST; ION-SINK; DECOMPOSITION AB Phosphorus cycling influences productivity and diversity in tropical wetlands, yet little is known about the forms of P found in the accreting organic matter of these ecosystems. We used alkaline (NaOH-ethylenediamine tetraacetic acid [EDTA]) extraction and solution P-31 nuclear magnetic resonance (NMR) spectroscopy to characterize P in surface soils across a strong nutrient gradient within a tropical ombrotrophic peat dome. From the interior bog plain to the marginal Raphia taedigera swamp, total soil P increased from 14.6 to 70.9 g m(-3) and resin-extractable P from 0.1 to 30 mg kg(-1). Phosphatase activity declined across the same transect (364-46 mu mol methylumbelliferone kg(-1) min(-1)), indicating an increase in P availability toward the periphery of the wetland. Organic P identified by solution 31P NMR spectroscopy included phosphomonoesters (12-17%), phosphodiesters (10-14%), and phosphonates (up to 3.3% of total P). Inositol phosphates were not detected in these acidic peats. Inorganic P forms included orthophosphate (9-25% of total P), pyrophosphate (up to 3%), and long-chain polyphosphates; the latter occurred in concentrations (up to 24% of total soil P) considerably higher than previously found in wetland soils. The concentration of residual (unextractable) P was similar among sites (mean 280 mg kg(-1)), resulting in an increase in its proportion of the total soil P from 29% at the P-rich margins to 55% at the P-poor interior. This is the first information on the P composition of tropical wetland soils and provides a basis for further study of the cycling and contribution of P forms to the nutrition of plants and microorganisms. C1 [Cheesman, Alexander W.; Reddy, K. Ramesh] Univ Florida, Soil & Water Sci Dep, Wetland Biogeochem Lab, Gainesville, FL 32611 USA. [Cheesman, Alexander W.; Turner, Benjamin L.] Smithsonian Trop Res Inst, Balboa, Ancon, Panama. RP Cheesman, AW (reprint author), Univ Florida, Soil & Water Sci Dep, Wetland Biogeochem Lab, 106 Newell Hall, Gainesville, FL 32611 USA. EM cheesmanA@si.edu RI Turner, Benjamin/E-5940-2011; Cheesman, Alexander/H-5918-2013 OI Turner, Benjamin/0000-0002-6585-0722; Cheesman, Alexander/0000-0003-3931-5766 FU USDA-CREES National Research Initiative [2004-35107-14918]; National High Magnetic Field Laboratory FX We thank G. Jacome and P. Gondola of the Smithsonian Tropical Research Institute, Bocas del Toro Research Station, for logistical support and Dr. Jim Rocca, Dr. Alex Blumenfeld, and Tania Romero for analytical support. The project was supported by a grant from the USDA-CREES National Research Initiative (no. 2004-35107-14918) and the External User Program of the National High Magnetic Field Laboratory administered through the Advanced Magnetic Resonance Imaging and Spectroscopy (AMRIS) facility of the McKnight Brain Institute, University of Florida. NR 85 TC 22 Z9 22 U1 3 U2 74 PU SOIL SCI SOC AMER PI MADISON PA 677 SOUTH SEGOE ROAD, MADISON, WI 53711 USA SN 0361-5995 J9 SOIL SCI SOC AM J JI Soil Sci. Soc. Am. J. PD JUL PY 2012 VL 76 IS 4 BP 1496 EP 1506 DI 10.2136/sssaj2011.0365 PG 11 WC Soil Science SC Agriculture GA 973JH UT WOS:000306355900037 ER PT J AU Collin, R AF Collin, Rachel TI Nontraditional Life-History Choices: What Can "Intermediates" Tell Us about Evolutionary Transitions between Modes of Invertebrate Development? SO INTEGRATIVE AND COMPARATIVE BIOLOGY LA English DT Article ID BOCCARDIA-PROBOSCIDEA POLYCHAETA; MARINE BENTHIC INVERTEBRATES; VARIABLE LARVAL DEVELOPMENT; EGG SIZE; POECILOGONOUS POLYCHAETE; REPRODUCTIVE STRATEGIES; PHENOTYPIC POLYMORPHISM; CALYPTRAEID GASTROPODS; HYDROIDS-ELEGANS; ALDERIA-MODESTA AB Mode of development in marine invertebrates has been largely viewed as a dichotomy between small eggs that develop into free-living planktotrophic larvae and large eggs that bypass the larval stage and develop directly into juveniles. Modes of development that could be categorized as "intermediate" between these two extremes include facultative feeding larvae, short-lived planktotrophic larvae, dispersal dimorphisms, and poecilogony (in which nutritional mode varies within a species). These intermediates are rare. The few species-level phylogenies available that include them do not generally support the interpretation of intermediates as necessary, ephemeral transitional forms. Instead, they support the idea that intermediates are well adapted to their environments but that either these environments are short-lived relative to the frequency of speciation, or speciation events are associated with shifts in the mode of development. Each of the different intermediate forms could have evolved in response to variable environments. The phenotypically plastic intermediates could be a response to predictable environmental variation. Facultative feeding larvae and short-lived planktotrophic larvae could reflect conservative bet-hedging in response to unpredictable environmental variation, whereas poecilogony with mixed clutches could represent the alternative: diversifying bet-hedging. Since environmental variability is common, it remains an enigma why these intermediates are so rare. Discovery of more intermediates, and their careful description in terms of the level of variation expressed within, and among, clutches, and among females and populations, as well as determination of the genetic and environmental influences on this variation, will provide valuable test-cases for theories of the evolution of alternative phenotypes. C1 Smithsonian Trop Res Inst, Balboa, Ancon, Panama. RP Collin, R (reprint author), Smithsonian Trop Res Inst, Apartado Postal 0843-03092, Balboa, Ancon, Panama. EM collinr@si.edu FU US National Science Foundation [IOS-1157279, IOS-1019727]; Company of Biologists, Ltd.; American Microscopical Society; Society for Integrative and Comparative Biology; SICB division DEDB; SICB division DEE; SICB division DIZ FX I thank Pat Krug and Bruno Pernet for a helpful discussion, and K. McDonald for comments on an earlier version of the manuscript. I thank Emily Knott and Damhnait McHugh for organizing the symposium "Poecilogony as a window on larval evolution: Polymorphism of developmental mode within marine invertebrate species,'' which was sponsored by the US National Science Foundation (IOS-1157279), The Company of Biologists, Ltd., the American Microscopical Society, and the Society for Integrative and Comparative Biology, including SICB divisions DEDB, DEE, and DIZ.; I am grateful to the US National Science Foundation (IOS-1019727 to R. C.) for support of my research. NR 56 TC 18 Z9 19 U1 2 U2 23 PU OXFORD UNIV PRESS INC PI CARY PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA SN 1540-7063 J9 INTEGR COMP BIOL JI Integr. Comp. Biol. PD JUL PY 2012 VL 52 IS 1 BP 128 EP 137 DI 10.1093/icb/ics065 PG 10 WC Zoology SC Zoology GA 966FP UT WOS:000305823400012 PM 22596057 ER PT J AU Arnold, DE Bohor, BF Neff, H Feinman, GM Williams, PR Dussubieux, L Bishop, R AF Arnold, Dean E. Bohor, Bruce F. Neff, Hector Feinman, Gary M. Williams, Patrick Ryan Dussubieux, Laure Bishop, Ronald TI The first direct evidence of pre-columbian sources of palygorskite for Maya Blue SO JOURNAL OF ARCHAEOLOGICAL SCIENCE LA English DT Article DE Maya Blue; Palygorskite; Yucatan, Mexico; Chemical analysis; Volcanic ash ID ICP-MS; PIGMENT; YUCATAN; MEXICO; ATTAPULGITE; PAINT; CLAY AB Maya Blue, a nano-structured clay organic complex of palygorskite and indigo, was used predominantly before the Spanish Conquest. It has fascinated chemists, material scientists, archaeologists and art historians for decades because it is resistant to the effect of acids, alkalis, and other reagents, and its rich color has persisted for centuries in the harsh tropical climate of southern Mesoamerica. One of its components, palygorskite, is part of modern Maya indigenous knowledge, and ethnohistoric and archaeological data suggest that its modern sources were probably utilized in Prehispanic times. Yet no direct evidence verifies that palygorskite was actually mined from these sources to make Maya Blue. Here we characterize these sources compositionally, and compare our analyses to those of Maya Blue from Chichen Itza and Palenque. We demonstrate that the palygorskite in most of these samples came from modern mines, providing the first direct evidence for the use of these sources for making Maya Blue. These findings reveal that modern Maya indigenous knowledge about palygorskite, its mining, and its source locations, is at least seven centuries old. (C) 2012 Elsevier Ltd. All rights reserved. C1 [Arnold, Dean E.] Wheaton Coll, Dept Sociol & Anthropol, Wheaton, IL 60187 USA. [Bohor, Bruce F.] US Geol Survey Emeritus, Fed Ctr, Denver, CO USA. [Neff, Hector] Calif State Univ Long Beach, Dept Anthropol, Long Beach, CA 90840 USA. [Arnold, Dean E.; Feinman, Gary M.; Williams, Patrick Ryan; Dussubieux, Laure] Field Museum Nat Hist, Dept Anthropol, Chicago, IL 60605 USA. [Bishop, Ronald] Smithsonian Inst, Dept Anthropol, Washington, DC 20013 USA. RP Arnold, DE (reprint author), Wheaton Coll, Dept Sociol & Anthropol, 501 E Coll, Wheaton, IL 60187 USA. EM Dean.E.Arnold@wheaton.edu; Bbohor@usgs.gov; hneff@csulb.edu; gfeinman@fieldmuseum.org; rwilliams@fieldmuseum.org; ldussubieu@fieldmuseum.org; bishopr@si.edu FU National Geographic Society [8433-08]; Wheaton College G.W. Aldeen Memorial Fund; NSF [BCS-0917702, BCS-0604712] FX This research was supported by grants to the senior author from the National Geographic Society (Grant No. 8433-08) and the Wheaton College G.W. Aldeen Memorial Fund. The IIRMES Archaeometry lab, where some of the LA-ICP-MS analyses were undertaken, is supported by NSF grants BCS-0917702 and BCS-0604712. We thank William Betterton of the USGS for the X-ray diffraction patterns, and are grateful for the assistance of Hilary Mulhern, Wendy Jennings, and Hayley Schumacher in the preparation of this manuscript. NR 57 TC 9 Z9 10 U1 0 U2 22 PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0305-4403 J9 J ARCHAEOL SCI JI J. Archaeol. Sci. PD JUL PY 2012 VL 39 IS 7 BP 2252 EP 2260 DI 10.1016/j.jas.2012.02.036 PG 9 WC Anthropology; Archaeology; Geosciences, Multidisciplinary SC Anthropology; Archaeology; Geology GA 966PH UT WOS:000305849400033 ER PT J AU Ubelaker, DH De La Paz, JS AF Ubelaker, Douglas H. De La Paz, Jade S. TI Skeletal Indicators of Pregnancy and Parturition: A Historical Review SO JOURNAL OF FORENSIC SCIENCES LA English DT Article DE forensic science; forensic anthropology; parturition; parity status; pelvis; skeletal alterations; childbirth indicators ID SYMPHYSIS PUBIS; PREAURICULAR GROOVE; AGE-DETERMINATION; PELVIC JOINTS; OS-PUBIS; BONE; PARITY; DELIVERY; FEMALES; SULCUS AB Over a century of scientific literature has documented the research and analysis relating to the possible skeletal evidence of pregnancy, parturition, and childcare, yet today, there still exists variation in methodology and interpretation. Historical perspective facilitates understanding of the growth and development of the theories and research currently available to the forensic science community. Review of the relevant literature clearly indicates that specific skeletal alterations are not exclusively connected to obstetrical events. Although parturition and related events have been shown to leave various alterations on bone, the research record also demonstrates that other factors can contribute to the same or similar changes. Additionally, such alterations can often be found in nulliparous women and men and are frequently absent in parous and multiparous women. This literature review calls for the continued exploration of skeletal alterations for determining parity status in human skeletal remains. C1 [Ubelaker, Douglas H.; De La Paz, Jade S.] NMNH, Dept Anthropol, Smithsonian Inst, Washington, DC 20560 USA. RP Ubelaker, DH (reprint author), NMNH, Dept Anthropol, Smithsonian Inst, MRC 112, Washington, DC 20560 USA. EM ubelaked@si.edu NR 79 TC 10 Z9 10 U1 2 U2 17 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD JUL PY 2012 VL 57 IS 4 BP 866 EP 872 DI 10.1111/j.1556-4029.2012.02102.x PG 7 WC Medicine, Legal SC Legal Medicine GA 967HE UT WOS:000305896700002 PM 22372612 ER PT J AU Cron, GV Pirone, C Bartlett, M Kress, WJ Specht, C AF Cron, Glynis V. Pirone, Cary Bartlett, Madelaine Kress, W. John Specht, Chelsea TI Phylogenetic Relationships and Evolution in the Strelitziaceae (Zingiberales) SO SYSTEMATIC BOTANY LA English DT Article DE Biogeography; molecular phylogenetics; morphology; pollination; Strelitzia ID ARCHAIC COEVOLUTIONARY SYSTEM; NONCODING CHLOROPLAST DNA; RAVENALA-MADAGASCARIENSIS; ORCHIDANTHA LOWIACEAE; FLORAL DEVELOPMENT; CLIVIA-MIRABILIS; SEQUENCE DATA; SOUTH-AFRICA; POLLINATION; REGINAE AB Evolutionary trends and phylogenetic relationships in the Strelitziaceae (Zingiberales) were investigated using sequence data from ten plastid and two nuclear regions and a morphological dataset. The status of species of Strelitzia were evaluated in terms of the phylogenetic species concept. Relationships among the genera remain equivocal with two hypotheses emerging: (i) Strelitzia sister to a clade comprising Ravenala and Phenakospermum when indels are included, or (ii) Ravenala sister to the remainder of the Strelitziaceae when indels are excluded in/from the combined molecular and 'total evidence' analyses. Within Strelitzia, S. nicolai is sister to the rest of the genus, with S. alba sister to S. caudata. Strelitzia reginae is shown to be paraphyletic as S. juncea is nested within it, but more sampling at the population level is needed to confirm the taxonomic status of S. juncea. The highly localized and endangered Strelitzia alba is confirmed as a distinct species, as are S. caudata and S. nicolai, despite few morphological differences. Evolutionary trends are linked to changes in habitat and coevolution with pollinators. Climate change in southern Africa is thought to have restricted Strelitzia nicolai (or its ancestor) to the eastern coastal region, with subsequent allopatric speciation of S. alba and S. caudata, and relatively recent parapatric divergence of S. juncea from S. reginae. C1 [Cron, Glynis V.] Univ Witwatersrand, Sch Anim Plant & Environm Sci, ZA-2050 Johannesburg, South Africa. [Pirone, Cary] Florida Int Univ, Dept Biol Sci, Miami, FL 33199 USA. [Bartlett, Madelaine; Specht, Chelsea] Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94720 USA. [Kress, W. John] Smithsonian Inst, Natl Museum Nat Hist, Dept Bot, NHB 166, Washington, DC 20560 USA. RP Cron, GV (reprint author), Univ Witwatersrand, Sch Anim Plant & Environm Sci, ZA-2050 Johannesburg, South Africa. EM Glynis.Cron@wits.ac.za FU United States Environmental Protection Agency (EPA) under the Greater Research Opportunities (GRO) Graduate Program; National Research Foundation (NRF) of South Africa FX We thank the following persons: Dave Erickson (Smithsonian Institute), Justin Ramsey and Adam Green (University of Rochester) for laboratory use and the training of one of the authors (C. P.) in DNA sequencing technique, Kishlayin Chetty and Alex Haw for field collections and vegetative measurements of Strelitzia, Ewa Wojtasik for assistance with ARCGIS, Fairchild Tropical Botanic Garden and the University of California Botanical Garden and Heather Driscoll for assistance with vouchers, and Tim Collins for reviewing the molecular data and analyses. Laboratory work was funded in part by the United States Environmental Protection Agency (EPA) under the Greater Research Opportunities (GRO) Graduate Program; the field work and some sequencing were funded by the National Research Foundation (NRF) of South Africa. We thank the provincial authorities of KwaZulu-Natal, Eastern Cape and Western Cape for permits to collect Strelitzia specimens, and BOL, J, MO, NBG, NH, NU, PRE, RSA, and SAM herbaria for the loan of specimens for morphological examination, and David Lee and David Lorence for use of their photographs. NR 115 TC 3 Z9 4 U1 3 U2 34 PU AMER SOC PLANT TAXONOMISTS PI LARAMIE PA UNIV WYOMING, DEPT BOTANY 3165, 1000 E UNIVERSITY AVE, LARAMIE, WY 82071 USA SN 0363-6445 EI 1548-2324 J9 SYST BOT JI Syst. Bot. PD JUL-SEP PY 2012 VL 37 IS 3 BP 606 EP 619 DI 10.1600/036364412X648562 PG 14 WC Plant Sciences; Evolutionary Biology SC Plant Sciences; Evolutionary Biology GA 965PA UT WOS:000305778500004 ER PT J AU Stull, GW Herrera, F Manchester, SR Jaramillo, C Tiffney, BH AF Stull, Gregory W. Herrera, Fabiany Manchester, Steven R. Jaramillo, Carlos Tiffney, Bruce H. TI Fruits of an "Old World" tribe (Phytocreneae; Icacinaceae) from the Paleogene of North and South America SO SYSTEMATIC BOTANY LA English DT Article DE Biogeography; fossil endocarps; Icacinaceae; Neotropics; Paleogene ID NEOTROPICAL RAIN-FOREST; LATE PALEOCENE; CERREJON FORMATION; COLOMBIA; EOCENE; PHYTOGEOGRAPHY; MENISPERMACEAE; TERTIARY; MIDDLE; ANDES AB The Phytocreneae (Icacinaceae) are a tribe of scrambling shrubs and lianas presently distributed in tropical Africa, Madagascar, and Indo-Malesia. We describe the oldest known fossils of this tribe and provide the first recognition of this group in the Neotropical fossil record based on distinctive fruit remains. Palaeophytocrene piggae sp. nov., from the late Paleocene of western North America, and Palaeophytocrene hammenii sp. nov. and cf. Phytocrene sp., from the middle-late Paleocene of Colombia, constitute the oldest confirmed records of this tribe. Pyrenacantha austroamericana sp. nov., from the Oligocene of Peru, represents an extant Old World genus known also from the Eocene fossil record of North America and Europe. Collectively, these fossils indicate that the Phytocreneae were previously established in the Neotropics, despite their current absence from the region, and may provide evidence for Paleogene floristic exchange between North and South America. C1 [Stull, Gregory W.; Herrera, Fabiany; Manchester, Steven R.] Univ Florida, Florida Museum Nat Hist, Gainesville, FL 32611 USA. [Stull, Gregory W.; Herrera, Fabiany; Manchester, Steven R.] Univ Florida, Dept Biol, Gainesville, FL 32611 USA. [Herrera, Fabiany; Jaramillo, Carlos] Smithsonian Trop Res Inst, Balboa, Ancon, Panama. [Tiffney, Bruce H.] Univ Calif Santa Barbara, Dept Earth Sci, Santa Barbara, CA 93106 USA. RP Stull, GW (reprint author), Univ Florida, Florida Museum Nat Hist, Gainesville, FL 32611 USA. EM gwstull@ufl.edu FU graduate student research awards from the American Society of Plant Taxonomists; Society of Systematic Biologists; Evolving Earth Foundation; Geological Society of America Foundation; Asociacion Colombiana de Geologos y Geofisicos del Petroleo-ARES; Gary S. Morgan Student Research Award; Lewis & Clark Foundation-American Philosophical Society; Smithsonian Paleobiology Endowment Fund; Fundacion para la Promocion de la Investigacion y la Tecnologia, Banco de la Republica; Colombian Petroleum Institute; Fundacion Ares; National Science Foundation [BSR 0743474] FX We thank Jan Wieringa (WAG) for making modem icacinaceous fruits available for study, Terry A. Lott (UF) for assistance with photography and proofreading, and Mark P. Simmons and two anonymous reviewers for providing helpful suggestions for improving the manuscript. This study was supported by graduate student research awards from the American Society of Plant Taxonomists and the Society of Systematic Biologists to G. W. Stull; the Evolving Earth Foundation, the Geological Society of America Foundation, the Asociacion Colombiana de Geologos y Geofisicos del Petroleo-ARES, the Gary S. Morgan Student Research Award, and the Lewis & Clark Foundation-American Philosophical Society to F. Herrera; the Smithsonian Paleobiology Endowment Fund, the Fundacion para la Promocion de la Investigacion y la Tecnologia, Banco de la Republica, the Colombian Petroleum Institute, and Fundacion Ares to C. Jaramillo; and National Science Foundation grant BSR 0743474 to S. R. Manchester. NR 52 TC 9 Z9 11 U1 0 U2 3 PU AMER SOC PLANT TAXONOMISTS PI LARAMIE PA UNIV WYOMING, DEPT BOTANY 3165, 1000 E UNIVERSITY AVE, LARAMIE, WY 82071 USA SN 0363-6445 EI 1548-2324 J9 SYST BOT JI Syst. Bot. PD JUL-SEP PY 2012 VL 37 IS 3 BP 784 EP 794 DI 10.1600/036364412X648724 PG 11 WC Plant Sciences; Evolutionary Biology SC Plant Sciences; Evolutionary Biology GA 965PA UT WOS:000305778500019 ER PT J AU Bulbul, E Smith, RK Loewenstein, M AF Bulbul, Esra Smith, Randall K. Loewenstein, Michael TI A NEW METHOD TO CONSTRAIN SUPERNOVA FRACTIONS USING X-RAY OBSERVATIONS OF CLUSTERS OF GALAXIES SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: clusters: intracluster medium; galaxies: individual (A3112); nuclear reactions, nucleosynthesis, abundances; supernovae: general; X-rays: galaxies: clusters ID GALACTIC CHEMICAL EVOLUTION; CORE-COLLAPSE SUPERNOVAE; XMM-NEWTON SPECTROSCOPY; DELAY-TIME DISTRIBUTION; STAR-FORMATION RATE; METAL ENRICHMENT; HIGH-REDSHIFT; INTRACLUSTER MEDIUM; ABUNDANCE PATTERN; IA SUPERNOVAE AB Supernova (SN) explosions enrich the intracluster medium (ICM) both by creating and dispersing metals. We introduce a method to measure the number of SNe and relative contribution of Type Ia supernovae (SNe Ia) and core-collapse supernovae (SNe cc) by directly fitting X-ray spectral observations. The method has been implemented as an XSPEC model called snapec. snapec utilizes a single-temperature thermal plasma code (apec) to model the spectral emission based on metal abundances calculated using the latest SN yields from SN Ia and SN cc explosion models. This approach provides a self-consistent single set of uncertainties on the total number of SN explosions and relative fraction of SN types in the ICM over the cluster lifetime by directly allowing these parameters to be determined by SN yields provided by simulations. We apply our approach to XMM-Newton European Photon Imaging Camera (EPIC), Reflection Grating Spectrometer (RGS), and 200 ks simulated Astro-H observations of a cooling flow cluster, A3112. We find that various sets of SN yields present in the literature produce an acceptable fit to the EPIC and RGS spectra of A3112. We infer that 30.3% +/- 5.4% to 37.1% +/- 7.1% of the total SN explosions are SNe Ia, and the total number of SN explosions required to create the observed metals is in the range of (1.06 +/- 0.34) x 10(9) to (1.28 +/- 0.43) x 10(9), from snapec fits to RGS spectra. These values may be compared to the enrichment expected based on well-established empirically measured SN rates per star formed. The proportions of SNe Ia and SNe cc inferred to have enriched the ICM in the inner 52 kpc of A3112 is consistent with these specific rates, if one applies a correction for the metals locked up in stars. At the same time, the inferred level of SN enrichment corresponds to a star-to-gas mass ratio that is several times greater than the 10% estimated globally for clusters in the A3112 mass range. C1 [Bulbul, Esra; Smith, Randall K.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Bulbul, Esra; Loewenstein, Michael] NASA, Goddard Space Flight Ctr, CRESST, Greenbelt, MD 20771 USA. [Loewenstein, Michael] Univ Maryland, Dept Astron, College Pk, MD 20742 USA. [Bulbul, Esra; Loewenstein, Michael] NASA, Goddard Space Flight Ctr, Xray Astrophys Lab, Greenbelt, MD 20771 USA. RP Bulbul, E (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM ebulbul@cfa.harvard.edu FU NASA XMM-Newton grant [NNX09AP92G]; NASA ROSES-ADP grant [NNX09AC71G] FX The authors thank Hiroya Yamaguchi for kindly providing help on the simx software. We also thank the referee for their careful reading of the paper and insightful suggestions. We gratefully acknowledge support for this research from NASA XMM-Newton grant NNX09AP92G and NASA ROSES-ADP grant NNX09AC71G. NR 57 TC 14 Z9 15 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 1 PY 2012 VL 753 IS 1 AR 54 DI 10.1088/0004-637X/753/1/54 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 963OV UT WOS:000305632500054 ER PT J AU Dai, YS Bergeron, J Elvis, M Omont, A Huang, JS Bock, J Cooray, A Fazio, G Hatziminaoglou, E Ibar, E Magdis, GE Oliver, SJ Page, MJ Perez-Fournon, I Rigopoulou, D Roseboom, IG Scott, D Symeonidis, M Trichas, M Vieira, JD Willmer, CNA Zemcov, M AF Dai, Y. Sophia Bergeron, Jacqueline Elvis, Martin Omont, Alain Huang, Jia-Sheng Bock, Jamie Cooray, Asantha Fazio, Giovanni Hatziminaoglou, Evanthia Ibar, Edo Magdis, Georgios E. Oliver, Seb J. Page, Mathew J. Perez-Fournon, Ismael Rigopoulou, Dimitra Roseboom, Isaac G. Scott, Douglas Symeonidis, Myrto Trichas, Markos Vieira, Joaquin D. Willmer, Christopher N. A. Zemcov, Michael TI A POPULATION OF DUST-RICH QUASARS AT z similar to 1.5 SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: active; galaxies: nuclei; galaxies: starburst; infrared: galaxies; quasars: general ID SPECTRAL ENERGY-DISTRIBUTIONS; ULTRALUMINOUS INFRARED GALAXIES; ACTIVE GALACTIC NUCLEI; PALOMAR-GREEN QUASARS; DIGITAL SKY SURVEY; HIGH-REDSHIFT QUASARS; MM MAMBO/IRAM-30 M; STAR-FORMATION; HOST GALAXIES; MU-M AB We report Herschel SPIRE (250, 350, and 500 mu m) detections of 32 quasars with redshifts 0.5 <= z <= 3.6 from the Herschel Multi-tiered Extragalactic Survey (HerMES). These sources are from a MIPS 24 mu m flux-limited sample of 326 quasars in the Lockman Hole Field. The extensive multi-wavelength data available in the field permit construction of the rest-frame spectral energy distributions (SEDs) from ultraviolet to the mid-infrared for all sources, and to the far-infrared (FIR) for the 32 objects. Most quasars with Herschel FIR detections show dust temperatures in the range of 25-60 K, with a mean of 34 K. The FIR luminosities range from 10(11.3) to 10(13.5) L-circle dot, qualifying most of their hosts as ultra-or hyper-luminous infrared galaxies. These FIR-detected quasars may represent a dust-rich population, but with lower redshifts and fainter luminosities than quasars observed at similar to 1 mm. However, their FIR properties cannot be predicted from shorter wavelengths (0.3-20 mu m, rest frame), and the bolometric luminosities derived using the 5100 angstrom index may be underestimated for these FIR-detected quasars. Regardless of redshift, we observed a decline in the relative strength of FIR luminosities for quasars with higher near-infrared luminosities. C1 [Dai, Y. Sophia; Elvis, Martin; Huang, Jia-Sheng; Fazio, Giovanni; Trichas, Markos] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Dai, Y. Sophia] Boston Coll, Chestnut Hill, MA 02468 USA. [Bergeron, Jacqueline; Omont, Alain] Inst Astrophys, UMR7095, F-75014 Paris, France. [Bock, Jamie; Vieira, Joaquin D.; Zemcov, Michael] CALTECH, Pasadena, CA 91125 USA. [Bock, Jamie; Zemcov, Michael] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Cooray, Asantha] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. [Hatziminaoglou, Evanthia] ESO, D-85748 Garching, Germany. [Ibar, Edo] Royal Observ, UK Astron Technol Ctr, Edinburgh EH9 3HJ, Midlothian, Scotland. [Ibar, Edo; Roseboom, Isaac G.] Univ Edinburgh, Royal Observ, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland. [Magdis, Georgios E.; Rigopoulou, Dimitra] Univ Oxford, Dept Astrophys, Oxford OX1 3RH, England. [Magdis, Georgios E.] CEA Saclay, CNRS, Serv Astrophys Orme Merisiers, F-91191 Gif Sur Yvette, France. [Oliver, Seb J.] Univ Sussex, Dept Phys & Astron, Ctr Astron, Brighton BN1 9QH, E Sussex, England. [Page, Mathew J.; Symeonidis, Myrto] Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England. [Perez-Fournon, Ismael] IAC, E-38205 Tenerife, Spain. [Perez-Fournon, Ismael] ULL, Dept Astrofis, E-38205 Tenerife, Spain. [Rigopoulou, Dimitra] Rutherford Appleton Lab, Space Sci & Technol Dept, Didcot OX11 0QX, Oxon, England. [Scott, Douglas] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada. [Willmer, Christopher N. A.] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. RP Dai, YS (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM ydai@cfa.harvard.edu RI Oliver, Seb/A-2479-2013; Magdis, Georgios/C-7295-2014; OI Oliver, Seb/0000-0001-7862-1032; Magdis, Georgios/0000-0002-4872-2294; Scott, Douglas/0000-0002-6878-9840 FU CSA (Canada); NAOC (China); CEA; CNES; CNRS (France); ASI (Italy); MCINN (Spain); SNSB (Sweden); STFC; UKSA (UK); NASA (USA); Science and Technology Facilities Council [ST/F002858/1, ST/I000976/1]; NASA; Smithsonian Astrophysical Observatory; University of Arizona; SAO Predoctoral Fellowship FX This research has made use of data from the HerMES project-a Herschel Key Program utilizing Guaranteed Time from the SPIRE instrument team, ESAC scientists and a mission scientist. SPIRE has been developed by a consortium of institutes led by Cardiff University (UK) and including the University of Lethbridge (Canada); NAOC (China); CEA, LAM (France); IFSI, the University of Padua (Italy); IAC (Spain); Stockholm Observatory (Sweden); Imperial College London, RAL, UCL-MSSL, UKATC, the University of Sussex (UK); Caltech, JPL, NHSC, the University of Colorado (USA). This development has been supported by national funding agencies: CSA (Canada); NAOC (China); CEA, CNES, CNRS (France); ASI (Italy); MCINN (Spain); SNSB (Sweden); STFC and UKSA (UK); and NASA (USA). The HerMES data were accessed through the HeDaM database (http://hedam.oamp.fr) operated by CeSAM and hosted by the Laboratoire d'Astrophysique de Marseille. We acknowledge support from the Science and Technology Facilities Council (grant numbers ST/F002858/1 and ST/I000976/1). This work is based partly on observations made with the Spitzer Space Telescope and the MMT Observatory, operated by the Jet Propulsion Laboratory, Caltech under a contract with NASA, the Smithsonian Astrophysical Observatory and the University of Arizona, respectively. Research by Y. S. D. is supported by the SAO Predoctoral Fellowship. NR 52 TC 19 Z9 19 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUL 1 PY 2012 VL 753 IS 1 AR 33 DI 10.1088/0004-637X/753/1/33 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 963OV UT WOS:000305632500033 ER PT J AU Doria, A Gitti, M Ettori, S Brighenti, F Nulsen, PEJ McNamara, BR AF Doria, Alberto Gitti, Myriam Ettori, Stefano Brighenti, Fabrizio Nulsen, Paul E. J. McNamara, Brian R. TI A CHANDRA-VLA INVESTIGATION OF THE X-RAY CAVITY SYSTEM AND RADIO MINI-HALO IN THE GALAXY CLUSTER RBS 797 SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: active; galaxies: clusters: individual (RBS 797); galaxies: clusters: intracluster medium; galaxies: jets; radio continuum: galaxies; X-rays: galaxies: clusters ID ACTIVE GALACTIC NUCLEI; COOLING FLOW CLUSTERS; LARGE-SCALE SHOCK; XMM-NEWTON OBSERVATION; ROSAT BRIGHT SURVEY; PERSEUS CLUSTER; RX J1347.5-1145; HOT ATMOSPHERES; AGN OUTBURST; EMITTING GAS AB We present a study of the cavity system in the galaxy cluster RBS 797 based on Chandra and Very Large Array (VLA) data. RBS 797 (z = 0.35) is one of the most distant galaxy clusters in which two pronounced X-ray cavities have been discovered. The Chandra data confirm the presence of a cool core and indicate a higher metallicity along the cavity directions. This is likely due to the active galactic nucleus outburst, which lifts cool metal-rich gas from the center along the cavities, as seen in other systems. We find indications that the cavities are hotter than the surrounding gas. Moreover, the new Chandra images show bright rims contrasting with the deep, X-ray deficient cavities. The likely cause is that the expanding 1.4 GHz radio lobes have displaced the gas, compressing it into a shell that appears as bright cool arms. Finally, we show that the large-scale radio emission detected with our VLA observations may be classified as a radio mini-halo, powered by the cooling flow, as it nicely follows the trend P-radio versus P-CF predicted by the reacceleration model. C1 [Doria, Alberto] Argelander Inst Astron, D-53121 Bonn, Germany. [Gitti, Myriam; Brighenti, Fabrizio] Univ Bologna, Dipartimento Astron, I-40127 Bologna, Italy. [Gitti, Myriam; Ettori, Stefano] Astron Observ Bologna INAF, I-40127 Bologna, Italy. [Gitti, Myriam] Inst Radioastron INAF, I-40129 Bologna, Italy. [Nulsen, Paul E. J.; McNamara, Brian R.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [McNamara, Brian R.] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 2G1, Canada. [McNamara, Brian R.] Perimeter Inst Theoret Phys, Waterloo, ON, Canada. RP Doria, A (reprint author), Argelander Inst Astron, Hugel 71, D-53121 Bonn, Germany. RI Ettori, Stefano/N-5004-2015; OI Ettori, Stefano/0000-0003-4117-8617; Gitti, Myriam/0000-0002-0843-3009; Nulsen, Paul/0000-0003-0297-4493 FU Chandra grant [GO0-11136X, GO0-11003X]; Natural Sciences and Engineering Research Council of Canada; [ASI-INAF I/023/05/0]; [I/088/06/0] FX A.D. is a member of the International Max Planck Research School (IMPRS) for Astronomy and Astrophysics at the Universities of Bonn and Cologne. A significant part of this work was done by A.D. as a Master student at the University of Bologna. A.D. thanks the Harvard-Smithsonian Center for Astrophysics for the hospitality during the finalization of this work and acknowledges support by the Chandra grant GO0-11136X. M.G. acknowledges support by grants ASI-INAF I/023/05/0 and I/088/06/0 and by Chandra grants GO0-11003X and GO0-11136X. B.R.M. acknowledges support from the Natural Sciences and Engineering Research Council of Canada. NR 61 TC 10 Z9 10 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 1 PY 2012 VL 753 IS 1 AR 47 DI 10.1088/0004-637X/753/1/47 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 963OV UT WOS:000305632500047 ER PT J AU Graham, ML Sand, DJ Bildfell, CJ Pritchet, CJ Zaritsky, D Hoekstra, H Just, DW Herbert-Fort, S Sivanandam, S Foley, RJ AF Graham, M. L. Sand, D. J. Bildfell, C. J. Pritchet, C. J. Zaritsky, D. Hoekstra, H. Just, D. W. Herbert-Fort, S. Sivanandam, S. Foley, R. J. TI THE TYPE II SUPERNOVA RATE IN z similar to 0.1 GALAXY CLUSTERS FROM THE MULTI-EPOCH NEARBY CLUSTER SURVEY SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: clusters: general; supernovae: general ID CORE-COLLAPSE SUPERNOVAE; DELAY-TIME DISTRIBUTION; STAR-FORMATION; P SUPERNOVAE; HOST GALAXIES; IA SUPERNOVAE; LEGACY SURVEY; K-CORRECTIONS; OBSERVATIONAL CONSTRAINTS; EVOLUTION AB We present seven spectroscopically confirmed Type II cluster supernovae (SNe II) discovered in the Multi-Epoch Nearby Cluster Survey, a supernova survey targeting 57 low-redshift 0.05 < z < 0.15 galaxy clusters with the Canada-France-Hawaii Telescope. We find the rate of Type II supernovae within R-200 of z similar to 0.1 galaxy clusters to be 0.026(-0.018)(+0.085) (stat)(-0.001)(+0.003) (sys) SNuM. Surprisingly, one SN II is in a red-sequence host galaxy that shows no clear evidence of recent star formation (SF). This is unambiguous evidence in support of ongoing, low-level SF in at least some cluster elliptical galaxies, and illustrates that galaxies that appear to be quiescent cannot be assumed to host only Type Ia SNe. Based on this single SN II we make the first measurement of the SN II rate in red-sequence galaxies, and find it to be 0.007(-0.007)(+0.014)(stat)(-0.001)(+0.009)(sys) SNuM. We also make the first derivation of cluster specific star formation rates (sSFR) from cluster SN II rates. We find that for all galaxy types the sSFR is 5.1(-3.1)(+15.8) (stat) +/- 0.9(sys) M-circle dot yr(-1) (10(12) M-circle dot)(-1), and for red-sequence galaxies only it is 2.0(-0.9)(+4.2)(stat) +/- 0.4(sys) M-circle dot yr(-1) (10(12) M-circle dot)(-1). These values agree with SFRs measured from infrared and ultraviolet photometry, and H alpha emission from optical spectroscopy. Additionally, we use the SFR derived from our SNII rate to show that although a small fraction of cluster Type Ia SNe may originate in the young stellar population and experience a short delay time, these results do not preclude the use of cluster SN Ia rates to derive the late-time delay time distribution for SNe Ia. C1 [Graham, M. L.; Sand, D. J.] Las Cumbres Observ Global Telescope Network, Santa Barbara, CA 93117 USA. [Graham, M. L.; Sand, D. J.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. [Bildfell, C. J.; Pritchet, C. J.] Univ Victoria, Dept Phys & Astron, STN CSC, Victoria, BC V8W 3P6, Canada. [Zaritsky, D.; Herbert-Fort, S.] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. [Hoekstra, H.] Leiden Univ, Leiden Observ, NL-2333 CA Leiden, Netherlands. [Sivanandam, S.] Dunlap Inst Astron & Astrophys, Toronto, ON M5S 3H4, Canada. [Foley, R. J.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Graham, ML (reprint author), Las Cumbres Observ Global Telescope Network, 6740 Cortona Dr,Suite 102, Santa Barbara, CA 93117 USA. OI Hoekstra, Henk/0000-0002-0641-3231 FU National Engineering and Science Research Council of Canada; Marie Curie International Reintegration Grant; NWO Vidi grant; National Aeronautics and Space Administration FX We gratefully acknowledge the CFHT Queued Service Observations team, without whom MENeaCS would not have been possible. We thank Nelson Caldwell for managing the MMT/Hectospec queue, and also thank Stephenson Yang for his dedication to essential computer and network maintenance. C.J.P. acknowledges support from the National Engineering and Science Research Council of Canada. H.H. acknowledges support from a Marie Curie International Reintegration Grant and the NWO Vidi grant. This work is based in part on data products produced at the Canadian Astronomy Data Centre as part of the Canada-France-Hawaii Telescope Legacy Survey, a collaborative project of NRC and CNRS. This work is based on observations obtained with MegaPrime/MegaCam, a joint project of CFHT and CEA/DAPINA, at the Canada-France-Hawaii Telescope (CFHT) which is operated by the National Research Council (NRC) of Canada, the Institut National des Sciences l'Universe of the Centre National de la Recherche Scientifique (CNRS) of France, and the University of Hawaii. Observations reported here were obtained at the MMT Observatory, a joint facility of the Smithsonian Institution and the University of Arizona. This research has made use of the VizieR catalog access tool, CDS, Strasbourg, France. This research has made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This research has made use of the NASA/IPAC Infrared Science Archive, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. NR 67 TC 5 Z9 5 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUL 1 PY 2012 VL 753 IS 1 AR 68 DI 10.1088/0004-637X/753/1/68 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 963OV UT WOS:000305632500068 ER PT J AU Jimenez-Serra, I Zhang, Q Viti, S Martin-Pintado, J de Wit, WJ AF Jimenez-Serra, I. Zhang, Q. Viti, S. Martin-Pintado, J. de Wit, W. -J. TI CHEMICAL SEGREGATION TOWARD MASSIVE HOT CORES: THE AFGL2591 STAR-FORMING REGION SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM: individual objects (AFGL2591); ISM: molecules; stars: formation ID MOLECULAR LINE EMISSION; YOUNG STELLAR OBJECTS; PROTOSTELLAR ENVELOPES; CONTINUUM EMISSION; SULFUR CHEMISTRY; AFGL-2591; EVOLUTION; GL-2591; DUST; RADIATION AB We present high angular resolution observations (0 ''.5 x 0 ''.3) carried out with the Submillimeter Array (SMA) toward the AFGL2591 high-mass star-forming region. Our SMA images reveal a clear chemical segregation within the AFGL2591 VLA 3 hot core, where different molecular species (Types I, II, and III) appear distributed in three concentric shells. This is the first time that such a chemical segregation is ever reported at linear scales <= 3000 AU within a hot core. While Type I species (H2S and (CS)-C-13) peak at the AFGL2591 VLA 3 protostar, Type II molecules (HC3N, OCS, SO, and SO2) show a double-peaked structure circumventing the continuum peak. Type III species, represented by CH3OH, form a ring-like structure surrounding the continuum emission. The excitation temperatures of SO2, HC3N, and CH3OH (185 +/- 11 K, 150 +/- 20 K, and 124 +/- 12 K, respectively) show a temperature gradient within the AFGL2591 VLA 3 envelope, consistent with previous observations and modeling of the source. By combining the H2S, SO2, and CH3OH images, representative of the three concentric shells, we find that the global kinematics of the molecular gas follow Keplerian-like rotation around a 40 M-circle dot star. The chemical segregation observed toward AFGL2591 VLA 3 is explained by the combination of molecular UV photodissociation and a high-temperature (similar to 1000 K) gas-phase chemistry within the low extinction innermost region in the AFGL2591 VLA 3 hot core. C1 [Jimenez-Serra, I.; Zhang, Q.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Viti, S.] UCL, Dept Phys & Astron, London WC1E 6BT, England. [Martin-Pintado, J.] Ctr Astrobiol CSIC INTA, E-28850 Madrid, Spain. [de Wit, W. -J.] European So Observ, Santiago 19, Chile. RP Jimenez-Serra, I (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM ijimenez-serra@cfa.harvard.edu; qzhang@cfa.harvard.edu; sv@star.ucl.ac.uk; jmartin@cab.inta-csic.es; wdewit@eso.org RI Martin-Pintado, Jesus/H-6107-2015; OI Martin-Pintado, Jesus/0000-0003-4561-3508; Zhang, Qizhou/0000-0003-2384-6589 FU Smithsonian Astrophysical Observatory through a SMA fellowship; MICINN [ESP2007-65812-C02-C01, AYA2010-21697-C05-01]; AstroMadrid [CAM S2009/ESP-1496] FX We acknowledge the constructive comments from a second referee which helped to improve the paper. I.J.-S. acknowledges the Smithsonian Astrophysical Observatory for the support provided through a SMA fellowship. J.M.-P. and I.J.-S. have been partially funded by MICINN grants ESP2007-65812-C02-C01, AYA2010-21697-C05-01 and AstroMadrid (CAM S2009/ESP-1496). NR 47 TC 20 Z9 20 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 1 PY 2012 VL 753 IS 1 AR 34 DI 10.1088/0004-637X/753/1/34 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 963OV UT WOS:000305632500034 ER PT J AU Kratter, KM Perets, HB AF Kratter, Kaitlin M. Perets, Hagai B. TI STAR HOPPERS: PLANET INSTABILITY AND CAPTURE IN EVOLVING BINARY SYSTEMS SO ASTROPHYSICAL JOURNAL LA English DT Article DE binaries: general; planets and satellites: general; stars: AGB and post-AGB; white dwarfs ID SOLAR-TYPE STARS; WHITE-DWARFS; STELLAR EVOLUTION; GIANT PLANETS; RESONANCE OVERLAP; 3-BODY PROBLEM; GREAT ESCAPE; MASS; ORBITS; MULTIPLICITY AB Many planets are observed in stellar binary systems, and their frequency may be comparable to that of planetary systems around single stars. Binary stellar evolution in such systems influences the dynamical evolution of the resident planets. Here, we study the evolution of a single planet orbiting one star in an evolving binary system. We find that stellar evolution can trigger dynamical instabilities that drive planets into chaotic orbits. This instability leads to planet-star collisions, exchange of the planet between the binary stars ("star hoppers"), and ejection of the planet from the system. The means by which planets can be recaptured is similar to the pull-down capture mechanism for irregular solar system satellites. Because planets often suffer close encounters with the primary on the asymptotic giant branch, captures during a collision with the stellar envelope are also possible for more massive planets. Such capture could populate the habitable zone around white dwarfs. C1 [Kratter, Kaitlin M.; Perets, Hagai B.] Harvard Smithsonian Ctr Astrophys, Inst Theory & Computat, Cambridge, MA 02138 USA. RP Kratter, KM (reprint author), Harvard Smithsonian Ctr Astrophys, Inst Theory & Computat, 60 Garden St, Cambridge, MA 02138 USA. RI Perets, Hagai/K-9605-2015 OI Perets, Hagai/0000-0002-5004-199X FU Institute for Theory and Computation through Harvard College Observatory FX The authors thank Dimitri Veras, Andrew Youdin, and Smadar Naoz for comments on an earlier draft of this manuscript, and Nick Moeckel, Matt Holman, Fred Rasio, Dave Spiegel, and Jason Nordhaus for helpful discussions. The authors thank the referee for helpful comments. K.M.K. is supported by an Institute for Theory and Computation fellowship through the Harvard College Observatory. H.B.P. is a BIKURA (FIRST) and CfA prize fellow. NR 49 TC 35 Z9 35 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 1 PY 2012 VL 753 IS 1 AR 91 DI 10.1088/0004-637X/753/1/91 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 963OV UT WOS:000305632500091 ER PT J AU Rich, JA Torrey, P Kewley, LJ Dopita, MA Rupke, DSN AF Rich, J. A. Torrey, P. Kewley, L. J. Dopita, M. A. Rupke, D. S. N. TI AN INTEGRAL FIELD STUDY OF ABUNDANCE GRADIENTS IN NEARBY LUMINOUS INFRARED GALAXIES SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: abundances; galaxies: interactions; infrared: galaxies ID MASS-METALLICITY RELATION; ACTIVE GALACTIC NUCLEI; STAR-FORMING GALAXIES; DIGITAL SKY SURVEY; HIGH-REDSHIFT GALAXIES; H-II REGIONS; INTERACTING GALAXIES; SPIRAL GALAXIES; DISK GALAXIES; OPTICAL CLASSIFICATION AB We present for the first time metallicity maps generated using data from the Wide Field Spectrograph on the ANU 2.3 m of 10 luminous infrared galaxies (LIRGs) and discuss the abundance gradients and distribution of metals in these systems. We have carried out optical integral field spectroscopy (IFS) of several LIRGs in various merger phases to investigate the merger process. In a major merger of two spiral galaxies with preexisting disk abundance gradients, the changing distribution of metals can be used as a tracer of gas flows in the merging system as low-metallicity gas is transported from the outskirts of each galaxy to their nuclei. We employ this fact to probe merger properties by using the emission lines in our IFS data to calculate the gas-phase metallicity in each system. We create abundance maps and subsequently derive a metallicity gradient from each map. We compare our measured gradients to merger stage as well as several possible tracers of merger progress and observed nuclear abundances. We discuss our work in the context of previous abundance gradient observations and compare our results to new galaxy merger models that trace metallicity gradient. Our results agree with the observed flattening of metallicity gradients as a merger progresses. We compare our results with new theoretical predictions that include chemical enrichment. Our data show remarkable agreement with these simulations. C1 [Rich, J. A.; Kewley, L. J.; Dopita, M. A.] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA. [Torrey, P.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Dopita, M. A.] Australian Natl Univ, Res Sch Astron & Astrophys, Weston, ACT 2611, Australia. [Dopita, M. A.] King Abdulaziz Univ, Fac Sci, Dept Astron, Jeddah, Saudi Arabia. [Rupke, D. S. N.] Rhodes Coll, Dept Phys, Memphis, TN 38112 USA. RP Rich, JA (reprint author), Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA. EM jrich@ifa.hawaii.edu RI Dopita, Michael/P-5413-2014; Faculty of, Sciences, KAU/E-7305-2017; OI Dopita, Michael/0000-0003-0922-4986; Rich, Jeffrey/0000-0002-5807-5078; Torrey, Paul/0000-0002-5653-0786 NR 99 TC 46 Z9 46 U1 1 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 1 PY 2012 VL 753 IS 1 AR 5 DI 10.1088/0004-637X/753/1/5 PG 20 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 963OV UT WOS:000305632500005 ER PT J AU Sliwa, K Wilson, CD Petitpas, GR Armus, L Juvela, M Matsushita, S Peck, AB Yun, MS AF Sliwa, Kazimierz Wilson, Christine D. Petitpas, Glen R. Armus, Lee Juvela, Mika Matsushita, Satoki Peck, Alison B. Yun, Min S. TI LUMINOUS INFRARED GALAXIES WITH THE SUBMILLIMETER ARRAY. III. THE DENSE KILOPARSEC MOLECULAR CONCENTRATIONS OF Arp 299 SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: individual (Arp 299); galaxies: interactions; galaxies: starburst; submillimeter: galaxies ID STAR-FORMATION EFFICIENCY; STARBURST GALAXIES; HCO+ OBSERVATIONS; IRAS GALAXIES; GAS; CLOUDS; MERGER; HCN; SPECTROSCOPY; ARP-299 AB We have used high-resolution (similar to 2 ''.3) observations of the local (D-L = 46 Mpc) luminous infrared galaxy Arp 299 to map out the physical properties of the molecular gas that provides the fuel for its extreme star formation activity. The (CO)-C-12 J = 3-2, (CO)-C-12 J = 2-1, and (CO)-C-13 J = 2-1 lines were observed with the Submillimeter Array, and the short spacings of the (CO)-C-12 J = 2-1 and J = 3-2 observations have been recovered using the James Clerk Maxwell Telescope single dish observations. We use the radiative transfer code RADEX to estimate the physical properties (density, column density, and temperature) of the different regions in this system. The RADEX solutions of the two galaxy nuclei, IC 694 and NGC 3690, are consistent with a wide range of gas components, from warm moderately dense gas with T-kin > 30 K and n(H-2) similar to 0.3-3 x 10(3) cm(-3) to cold dense gas with T-kin similar to 10-30 K and n(H-2) > 3 x 10(3) cm(-3). The overlap region is shown to have a better constrained solution with T-kin similar to 10-50 K and n(H-2) similar to 1-30 x 10(3) cm(-3). We estimate the gas masses and star formation rates of each region in order to derive molecular gas depletion times. The depletion times of all regions (20-50 Myr) are found to be about two orders of magnitude lower than those of normal spiral galaxies. This rapid depletion time can probably be explained by a high fraction of dense gas on kiloparsec scales in Arp 299. We estimate the CO-to-H-2 factor, alpha(co) to be 0.4 +/- 0.3(3 x 10(-4)/x(CO)) M-circle dot (K km s(-1) pc(2))(-1) for the overlap region. This value agrees well with values determined previously for more advanced merger systems. C1 [Sliwa, Kazimierz; Wilson, Christine D.] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada. [Petitpas, Glen R.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Armus, Lee] CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA. [Juvela, Mika] Univ Helsinki Observ, Helsinki, Finland. [Matsushita, Satoki] Acad Sinica, Inst Astron & Astrophys, Taipei 106, Taiwan. [Peck, Alison B.] Joint ALMA Off, Santiago 7550108, Chile. [Yun, Min S.] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA. RP Sliwa, K (reprint author), McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada. EM sliwak@mcmaster.ca; wilson@physics.mcmaster.ca; gpetitpa@cfa.harvard.edu; lee@ipac.caltech.edu; mika.juvela@helsinki.fi; satoki@asiaa.sinica.edu.tw; apeck@alma.cl; myun@astro.umass.edu OI Juvela, Mika/0000-0002-5809-4834 FU Smithsonian Institution; Academia Sinica; Natural Science and Engineering Research Council of Canada (NSERC) FX The Submillimeter Array is a joint project between the Smithsonian Astrophysical Observatory and the Academia Sinica Institute of Astronomy and Astrophysics and is funded by the Smithsonian Institution and the Academia Sinica. The James Clerk Maxwell Telescope is operated by The Joint Astronomy Centre on behalf of the Particle Physics and Astronomy Research Council of the United Kingdom, the Netherlands Organisation for Scientific Research, and the National Research Council of Canada. We thank the anonymous referee for a very useful referee report and S. Aalto for giving us the OVRO CO J = 1-0 map. C.D.W. acknowledges support by the Natural Science and Engineering Research Council of Canada (NSERC). NR 42 TC 15 Z9 15 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 1 PY 2012 VL 753 IS 1 AR 46 DI 10.1088/0004-637X/753/1/46 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 963OV UT WOS:000305632500046 ER PT J AU Su, M Finkbeiner, DP AF Su, Meng Finkbeiner, Douglas P. TI EVIDENCE FOR GAMMA-RAY JETS IN THE MILKY WAY SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: active; galaxies: starburst; gamma rays: galaxies; ISM: jets and outflows ID EXTRAGALACTIC RADIO-SOURCES; X-RAY; EMISSION; ENERGY; MISSION; MODELS; GALAXY; WIND; MAPS; STAR AB Although accretion onto supermassive black holes in other galaxies is seen to produce powerful jets in X-ray and radio, no convincing detection has ever been made of a kpc-scale jet in the Milky Way. The recently discovered pair of 10 kpc tall gamma-ray bubbles in our Galaxy may be signs of earlier jet activity from the central black hole. In this paper, we identify a gamma-ray cocoon feature in the southern bubble, a jet-like feature along the cocoon's axis of symmetry, and another directly opposite the Galactic center in the north. Both the cocoon and jet-like feature have a hard spectrum with spectral index similar to-2 from 1 to 100 GeV, with a cocoon total luminosity of (5.5 +/- 0.45) x 10(35) and luminosity of the jet-like feature of (1.8 +/- 0.35) x 10(35) erg s(-1) at 1-100 GeV. If confirmed, these jets are the first resolved gamma-ray jets ever seen. C1 [Su, Meng; Finkbeiner, Douglas P.] Harvard Smithsonian Ctr Astrophys, Inst Theory & Computat, Cambridge, MA 02138 USA. [Finkbeiner, Douglas P.] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA. RP Su, M (reprint author), Harvard Smithsonian Ctr Astrophys, Inst Theory & Computat, 60 Garden St,MS 51, Cambridge, MA 02138 USA. EM mengsu@cfa.harvard.edu RI Su, Meng/J-4211-2013 FU NASA Fermi Guest Investigator Program FX It is a pleasure to acknowledge helpful conversations with Aneta Siemiginowska, Martin Elvis, Feng Yuan, and Roman Shcherbakov. We acknowledge the use of public data from the Fermi data archive at http://fermi.gsfc.nasa.gov/ssc/. M.S. and D.P.F. are partially supported by the NASA Fermi Guest Investigator Program. This research made use of the NASA Astrophysics Data System (ADS) and the IDL Astronomy User's Library at Goddard (available at http://idlastro.gsfc.nasa.gov). NR 33 TC 38 Z9 39 U1 4 U2 15 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUL 1 PY 2012 VL 753 IS 1 AR 61 DI 10.1088/0004-637X/753/1/61 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 963OV UT WOS:000305632500061 ER PT J AU Temim, T Sonneborn, G Dwek, E Arendt, RG Gehrz, RD Slane, P Roellig, TL AF Temim, Tea Sonneborn, George Dwek, Eli Arendt, Richard G. Gehrz, Robert D. Slane, Patrick Roellig, Thomas L. TI PROPERTIES AND SPATIAL DISTRIBUTION OF DUST EMISSION IN THE CRAB NEBULA SO ASTROPHYSICAL JOURNAL LA English DT Article DE dust, extinction; infrared: ISM; ISM: individual objects (Crab Nebula); ISM: supernova remnants; pulsars: individual (PSR B0531+21) ID SPITZER-SPACE-TELESCOPE; SUPERNOVA REMNANT; INTERSTELLAR DUST; PHOTOELECTRIC-EMISSION; INFRARED SPECTROGRAPH; EARLY UNIVERSE; HIGH-REDSHIFT; CASSIOPEIA; SPECTROSCOPY; EXTINCTION AB Recent infrared (IR) observations of freshly formed dust in supernova remnants have yielded significantly lower dust masses than predicted by theoretical models and measured from high-redshift observations. The Crab Nebula's pulsar wind is thought to be sweeping up freshly formed supernova (SN) dust along with the ejected gas. The evidence for this dust was found in the form of an IR excess in the integrated spectrum of the Crab and in extinction against the synchrotron nebula that revealed the presence of dust in the filament cores. We present the first spatially resolved emission spectra of dust in the Crab Nebula acquired with the Infrared Spectrograph on board the Spitzer Space Telescope. The IR spectra are dominated by synchrotron emission and show forbidden line emission from S, Si, Ne, Ar, O, Fe, and Ni. We derived a synchrotron spectral map from the 3.6 and 4.5 mu m images, and subtracted this contribution from our data to produce a map of the residual continuum emission from dust. The dust emission appears to be concentrated along the ejecta filaments and is well described by an amorphous carbon or silicate grain compositions. We find a dust temperature of 55 +/- 4 K for silicates and 60 +/- 7 K for carbon grains. The total estimated dust mass is (1.2-12) x 10(-3) M-circle dot, well below the theoretical dust yield predicted for a core-collapse supernova. Our grain heating model implies that the dust grain radii are relatively small, unlike what is expected for dust grains formed in a Type IIP SN. C1 [Temim, Tea; Sonneborn, George; Dwek, Eli; Arendt, Richard G.] NASA, Goddard Space Flight Ctr, Observat Cosmol Lab, Greenbelt, MD 20771 USA. [Temim, Tea] Oak Ridge Associated Univ ORAU, Oak Ridge, TN 37831 USA. [Arendt, Richard G.] Univ Maryland Baltimore Cty, CRESST, Baltimore, MD 21250 USA. [Gehrz, Robert D.] Univ Minnesota, Minnesota Inst Astrophys, Minneapolis, MN 55455 USA. [Slane, Patrick] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Roellig, Thomas L.] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA. RP Temim, T (reprint author), NASA, Goddard Space Flight Ctr, Observat Cosmol Lab, Code 665, Greenbelt, MD 20771 USA. EM tea.temim@nasa.gov OI Arendt, Richard/0000-0001-8403-8548; Temim, Tea/0000-0001-7380-3144 FU NASA; U.S. Air Force FX This work is partly based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. R.D.G. was supported by NASA and the U.S. Air Force. NR 54 TC 18 Z9 18 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 1 PY 2012 VL 753 IS 1 AR 72 DI 10.1088/0004-637X/753/1/72 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 963OV UT WOS:000305632500072 ER PT J AU Wood, BE Laming, JM Karovska, M AF Wood, Brian E. Laming, J. Martin Karovska, Margarita TI THE CORONAL ABUNDANCE ANOMALIES OF M DWARFS SO ASTROPHYSICAL JOURNAL LA English DT Article DE stars: coronae; stars: individual (GJ 338); stars: late-type; X-rays: stars ID X-RAY SPECTROSCOPY; INTERMEDIATE-ACTIVITY LEVELS; XMM-NEWTON VIEW; NON-WKB MODELS; ALPHA-CENTAURI; STELLAR CORONAE; BINARY-SYSTEM; SOLAR-WIND; STARS; CHANDRA AB We analyze Chandra X-ray spectra of the M0 V+M0 V binary GJ 338. As quantified by X-ray surface flux, these are the most inactive M dwarfs ever observed with X-ray grating spectroscopy. We focus on measuring coronal abundances, in particular searching for evidence of abundance anomalies related to first ionization potential (FIP). In the solar corona and wind, low-FIP elements are overabundant, which is the so-called FIP effect. For other stars, particularly very active ones, an "inverse FIP effect" is often observed, with low-FIP elements being underabundant. For both members of the GJ 338 binary, we find evidence for a modest inverse FIP effect, consistent with expectations from a previously reported correlation between spectral type and FIP bias. This amounts to strong evidence that all M dwarfs should exhibit the inverse FIP effect phenomenon, not just the active ones. We take the first step toward modeling the inverse FIP phenomenon in M dwarfs, building on past work that has demonstrated that MHD waves coursing through coronal loops can lead to a ponderomotive force that fractionates elements in a manner consistent with the FIP effect. We demonstrate that in certain circumstances this model can also lead to an inverse FIP effect, pointing the way to more detailed modeling of M dwarf coronal abundances in the future. C1 [Wood, Brian E.; Laming, J. Martin] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA. [Karovska, Margarita] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. RP Wood, BE (reprint author), USN, Res Lab, Div Space Sci, Washington, DC 20375 USA. EM brian.wood@nrl.navy.mil FU NASA through ATP [NNH11AQ23I, GO1-12012Z]; NASA [NAS8-03060] FX We thank Brad Wargelin and Vinay Kashyap for their assistance in identifying the source of the asymmetry in the GJ 338A image. Support for this work was provided by NASA through ATP award NNH11AQ23I and Chandra Award Number GO1-12012Z issued by the Chandra X-ray Center (CXC). M.K. is a member of CXC, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of NASA under contract NAS8-03060. NR 47 TC 11 Z9 11 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 1 PY 2012 VL 753 IS 1 AR 76 DI 10.1088/0004-637X/753/1/76 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 963OV UT WOS:000305632500076 ER PT J AU Bleem, LE van Engelen, A Holder, GP Aird, KA Armstrong, R Ashby, MLN Becker, MR Benson, BA Biesiadzinski, T Brodwin, M Busha, MT Carlstrom, JE Chang, CL Cho, HM Crawford, TM Crites, AT de Haan, T Desai, S Dobbs, MA Dore, O Dudley, J Geach, JE George, EM Gladders, MD Gonzalez, AH Halverson, NW Harrington, N High, FW Holden, BP Holzapfel, WL Hoover, S Hrubes, JD Joy, M Keisler, R Knox, L Lee, AT Leitch, EM Lueker, M Luong-Van, D Marrone, DP Martinez-Manso, J McMahon, JJ Mehl, J Meyer, SS Mohr, JJ Montroy, TE Natoli, T Padin, S Plagge, T Pryke, C Reichardt, CL Rest, A Ruhl, JE Saliwanchik, BR Sayre, JT Schaffer, KK Shaw, L Shirokoff, E Spieler, HG Stalder, B Stanford, SA Staniszewski, Z Stark, AA Stern, D Story, K Vallinotto, A Vanderlinde, K Vieira, JD Wechsler, RH Williamson, R Zahn, O AF Bleem, L. E. van Engelen, A. Holder, G. P. Aird, K. A. Armstrong, R. Ashby, M. L. N. Becker, M. R. Benson, B. A. Biesiadzinski, T. Brodwin, M. Busha, M. T. Carlstrom, J. E. Chang, C. L. Cho, H. M. Crawford, T. M. Crites, A. T. de Haan, T. Desai, S. Dobbs, M. A. Dore, O. Dudley, J. Geach, J. E. George, E. M. Gladders, M. D. Gonzalez, A. H. Halverson, N. W. Harrington, N. High, F. W. Holden, B. P. Holzapfel, W. L. Hoover, S. Hrubes, J. D. Joy, M. Keisler, R. Knox, L. Lee, A. T. Leitch, E. M. Lueker, M. Luong-Van, D. Marrone, D. P. Martinez-Manso, J. McMahon, J. J. Mehl, J. Meyer, S. S. Mohr, J. J. Montroy, T. E. Natoli, T. Padin, S. Plagge, T. Pryke, C. Reichardt, C. L. Rest, A. Ruhl, J. E. Saliwanchik, B. R. Sayre, J. T. Schaffer, K. K. Shaw, L. Shirokoff, E. Spieler, H. G. Stalder, B. Stanford, S. A. Staniszewski, Z. Stark, A. A. Stern, D. Story, K. Vallinotto, A. Vanderlinde, K. Vieira, J. D. Wechsler, R. H. Williamson, R. Zahn, O. TI A MEASUREMENT OF THE CORRELATION OF GALAXY SURVEYS WITH CMB LENSING CONVERGENCE MAPS FROM THE SOUTH POLE TELESCOPE SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE cosmic background radiation; galaxies: structure ID BACKGROUND POWER SPECTRUM; PHOTOMETRIC REDSHIFTS; SKY SURVEY; FIELD; ANISOTROPIES; SAMPLE AB We compare cosmic microwave background lensing convergence maps derived from South Pole Telescope (SPT) data with galaxy survey data from the Blanco Cosmology Survey, WISE, and a new large Spitzer/IRAC field designed to overlap with the SPT survey. Using optical and infrared catalogs covering between 17 and 68 deg(2) of sky, we detect a correlation between the SPT convergence maps and each of the galaxy density maps at >4 sigma, with zero correlation robustly ruled out in all cases. The amplitude and shape of the cross-power spectra are in good agreement with theoretical expectations and the measured galaxy bias is consistent with previous work. The detections reported here utilize a small fraction of the full 2500 deg(2) SPT survey data and serve as both a proof of principle of the technique and an illustration of the potential of this emerging cosmological probe. C1 [Bleem, L. E.; Becker, M. R.; Benson, B. A.; Carlstrom, J. E.; Chang, C. L.; Crawford, T. M.; Crites, A. T.; Gladders, M. D.; High, F. W.; Hoover, S.; Keisler, R.; Leitch, E. M.; Mehl, J.; Meyer, S. S.; Natoli, T.; Padin, S.; Plagge, T.; Schaffer, K. K.; Story, K.; Vieira, J. D.; Williamson, R.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA. [Bleem, L. E.; Becker, M. R.; Carlstrom, J. E.; Hoover, S.; Keisler, R.; Meyer, S. S.; Natoli, T.; Story, K.; Vieira, J. D.] Univ Chicago, Dept Phys, Chicago, IL 60637 USA. [van Engelen, A.; Holder, G. P.; de Haan, T.; Dobbs, M. A.; Dudley, J.; Geach, J. E.; Vanderlinde, K.] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada. [Armstrong, R.] Univ Illinois, Natl Ctr Supercomp Applicat, Urbana, IL 61801 USA. [Ashby, M. L. N.; Stalder, B.; Stark, A. A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Benson, B. A.; Carlstrom, J. E.; Chang, C. L.; Meyer, S. S.; Schaffer, K. K.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. [Biesiadzinski, T.; McMahon, J. J.] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA. [Brodwin, M.] Univ Missouri, Dept Phys & Astron, Kansas City, MO 64110 USA. [Busha, M. T.] Univ Zurich, Inst Theoret Phys, CH-8001 Zurich, Switzerland. [Busha, M. T.; Lee, A. T.; Spieler, H. G.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA. [Carlstrom, J. E.; Crawford, T. M.; Crites, A. T.; Gladders, M. D.; High, F. W.; Leitch, E. M.; Meyer, S. S.; Padin, S.; Plagge, T.; Williamson, R.] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA. [Carlstrom, J. E.; Chang, C. L.] Argonne Natl Lab, Argonne, IL 60439 USA. [Cho, H. M.] NIST Quantum Devices Grp, Boulder, CO 80305 USA. [Desai, S.; Mohr, J. J.] Univ Munich, Dept Phys, D-81679 Munich, Germany. [Desai, S.; Mohr, J. J.] Excellence Cluster Universe, D-85748 Garching, Germany. [Dore, O.; Lueker, M.; Padin, S.; Vieira, J. D.] CALTECH, Div Phys Math & Astron, Pasadena, CA 91125 USA. [Dore, O.; Stern, D.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Zahn, O.] Univ Calif Berkeley, Dept Phys, Berkeley Ctr Cosmol Phys, Berkeley, CA 94720 USA. [Gonzalez, A. H.; Martinez-Manso, J.] Univ Florida, Dept Astron, Gainesville, FL 32611 USA. [Halverson, N. W.] Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA. [Halverson, N. W.] Univ Colorado, Dept Phys, Boulder, CO 80309 USA. [Holden, B. P.] Univ Calif Santa Cruz, SantaCruz UCO Lick Observ, Santa Cruz, CA 95065 USA. [Joy, M.] NASA Marshall Space Flight Ctr, Dept Space Sci, Huntsville, AL 35812 USA. [Knox, L.; Stanford, S. A.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. [Marrone, D. P.] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. [Mohr, J. J.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. [Montroy, T. E.; Ruhl, J. E.; Saliwanchik, B. R.; Sayre, J. T.; Staniszewski, Z.] Case Western Reserve Univ, Dept Phys, Ctr Educ & Res Cosmol & Astrophys, Cleveland, OH 44106 USA. [Pryke, C.] Univ Minnesota, Dept Phys, Minneapolis, MN 55455 USA. [Rest, A.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Schaffer, K. K.] Sch Art Inst Chicago, Liberal Arts Dept, Chicago, IL 60603 USA. [Shaw, L.] Yale Univ, Dept Phys, New Haven, CT 06520 USA. [Vallinotto, A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Wechsler, R. H.] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA. [Wechsler, R. H.] Stanford Univ, Dept Phys, Stanford, CA 94305 USA. [Wechsler, R. H.] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA. [Zahn, O.] Lawrence Berkeley Natl Labs, Berkeley, CA 94720 USA. RP Bleem, LE (reprint author), Univ Chicago, Kavli Inst Cosmol Phys, 5640 S Ellis Ave, Chicago, IL 60637 USA. RI Williamson, Ross/H-1734-2015; Holzapfel, William/I-4836-2015; OI Williamson, Ross/0000-0002-6945-2975; Marrone, Daniel/0000-0002-2367-1080; Becker, Matthew/0000-0001-7774-2246; Aird, Kenneth/0000-0003-1441-9518; Reichardt, Christian/0000-0003-2226-9169; Stark, Antony/0000-0002-2718-9996 FU Kavli Foundation; Moore Foundation; NSERC; CRC program; CIfAR; NASA Hubble Fellowship [HF-51275.01]; KICP Fellowship; Alfred P. Sloan Research Fellowship; DOE [DE-AC02-76SF00515, DE-AC52-06NA25396 (LA-UR-12-20137)]; BCCP fellowship; NASA; [ANT-0638937]; [ANT-0130612]; [PHY-0114422]; [AST-1009012]; [AST-1009811] FX The SPT is supported by grants ANT-0638937 and ANT-0130612, with partial support provided by PHY-0114422, the Kavli Foundation, and the Moore Foundation. Work at McGill is supported by NSERC, the CRC program, and CIfAR, and at Harvard by grant AST-1009012. R. Keisler acknowledges NASA Hubble Fellowship grant HF-51275.01, B. A. Benson a KICP Fellowship, M. Dobbs an Alfred P. Sloan Research Fellowship, L. Shaw grant AST-1009811, R. Wechsler DOE contract DE-AC02-76SF00515, A. Vallinotto DOE contract DE-AC52-06NA25396 (LA-UR-12-20137), and O. Zahn a BCCP fellowship. This publication uses data from the Wide-field Infrared Survey Explorer, a joint project of UCLA, and JPL/Caltech, funded by NASA, and uses data provided by NOAO PI: 2005B-0043, distributed by the NOAO Science Archive. NOAO is operated by AURA under cooperative agreement with the NSF. This work is based in part on observations made with the Spitzer Space Telescope, operated by JPL, Caltech, under a contract with NASA. NR 42 TC 40 Z9 40 U1 1 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD JUL 1 PY 2012 VL 753 IS 1 AR L9 DI 10.1088/2041-8205/753/1/L9 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 963QK UT WOS:000305637900009 ER PT J AU Cohen, O Glocer, A AF Cohen, O. Glocer, A. TI AMBIPOLAR ELECTRIC FIELD, PHOTOELECTRONS, AND THEIR ROLE IN ATMOSPHERIC ESCAPE FROM HOT JUPITERS SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE planets and satellites: atmospheres ID STELLAR X-RAY; POLAR WIND; GIANT PLANETS; MASS-LOSS; EXOPLANET HD-209458B; EVAPORATION; HYDROGEN; AERONOMY AB Atmospheric mass loss from Hot Jupiters can be large due to the close proximity of these planets to their host star and the strong radiation the planetary atmosphere receives. On Earth, a major contribution to the acceleration of atmospheric ions comes from the vertical separation of ions and electrons, and the generation of the ambipolar electric field. This process, known as the "polar wind," is responsible for the transport of ionospheric constituents to Earth's magnetosphere, where they are well observed. The polar wind can also be enhanced by a relatively small fraction of super-thermal electrons (photoelectrons) generated by photoionization. We formulate a simplified calculation of the effect of the ambipolar electric field and the photoelectrons on the ion scale height in a generalized manner. We find that the ion scale height can be increased by a factor of 2-15 due to the polar wind effects. We also estimate a lower limit of an order of magnitude increase of the ion density and the atmospheric mass-loss rate when polar wind effects are included. C1 [Cohen, O.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Glocer, A.] NASA, GSFC, Greenbelt, MD 20771 USA. RP Cohen, O (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. RI Glocer, Alex/C-9512-2012; feggans, john/F-5370-2012; OI Glocer, Alex/0000-0001-9843-9094; Cohen, Ofer/0000-0003-3721-0215 FU SI Grand Challenges grant [40510254HH0022] FX We thank an unknown referee for her/his review report and Jeremy Drake for his help in preparing this manuscript. O.C. is supported by SI Grand Challenges grant No. 40510254HH0022. NR 35 TC 9 Z9 9 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD JUL 1 PY 2012 VL 753 IS 1 AR L4 DI 10.1088/2041-8205/753/1/L4 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 963QK UT WOS:000305637900004 ER PT J AU Foley, RJ Kromer, M Marion, GH Pignata, G Stritzinger, MD Taubenberger, S Challis, P Filippenko, AV Folatelli, G Hillebrandt, W Hsiao, EY Kirshner, RP Li, W Morrell, NI Roepke, FK Ciaraldi-Schoolmann, F Seitenzahl, IR Silverman, JM Simcoe, RA Berta, ZK Ivarsen, KM Newton, ER Nysewander, MC Reichart, DE AF Foley, Ryan J. Kromer, Markus Marion, G. Howie Pignata, Giuliano Stritzinger, Maximilian D. Taubenberger, Stefan Challis, Peter Filippenko, Alexei V. Folatelli, Gaston Hillebrandt, Wolfgang Hsiao, Eric Y. Kirshner, Robert P. Li, Weidong Morrell, Nidia I. Roepke, Friedrich K. Ciaraldi-Schoolmann, Franco Seitenzahl, Ivo R. Silverman, Jeffrey M. Simcoe, Robert A. Berta, Zachory K. Ivarsen, Kevin M. Newton, Elisabeth R. Nysewander, Melissa C. Reichart, Daniel E. TI THE FIRST MAXIMUM-LIGHT ULTRAVIOLET THROUGH NEAR-INFRARED SPECTRUM OF A TYPE Ia SUPERNOVA SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE supernovae: general; supernovae: individual (SN 2011iv) ID HUBBLE-SPACE-TELESCOPE; EJECTA VELOCITY; HOST GALAXIES; REDSHIFT; CURVES; LUMINOSITY; MODELS; SPECTROSCOPY; BRIGHTNESS; DISTANCES AB We present the first maximum-light ultraviolet (UV) through near-infrared (NIR) Type Ia supernova (SN Ia) spectrum. This spectrum of SN 2011iv was obtained nearly simultaneously by the Hubble Space Telescope at UV/optical wavelengths and the Magellan Baade telescope at NIR wavelengths. These data provide the opportunity to examine the entire maximum-light SN Ia spectral energy distribution. Since the UV region of an SN Ia spectrum is extremely sensitive to the composition of the outer layers of the explosion, which are transparent at longer wavelengths, this unprecedented spectrum can provide strong constraints on the composition of the SN ejecta, and similarly the SN explosion and progenitor system. SN 2011iv is spectroscopically normal, but has a relatively fast decline (Delta m(15)(B) = 1.69 +/- 0.05 mag). We compare SN 2011iv to other SNe Ia with UV spectra near maximum light and examine trends between UV spectral properties, light-curve shape, and ejecta velocity. We tentatively find that SNe with similar light-curve shapes but different ejecta velocities have similar UV spectra, while those with similar ejecta velocities but different light-curve shapes have very different UV spectra. Through a comparison with explosion models, we find that both a solar-metallicity W7 and a zero-metallicity delayed-detonation model provide a reasonable fit to the spectrum of SN 2011iv from the UV to the NIR. C1 [Foley, Ryan J.; Marion, G. Howie; Challis, Peter; Berta, Zachory K.; Newton, Elisabeth R.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Kromer, Markus; Taubenberger, Stefan; Hillebrandt, Wolfgang; Roepke, Friedrich K.; Ciaraldi-Schoolmann, Franco; Seitenzahl, Ivo R.] Max Planck Inst Astrophys, D-85748 Munich, Germany. [Pignata, Giuliano] Univ Andres Bello, Dept Ciencias Fis, Santiago, Chile. [Stritzinger, Maximilian D.] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark. [Stritzinger, Maximilian D.] Stockholm Univ, Dept Astron, Oskar Klein Ctr, AlbaNova, S-10691 Stockholm, Sweden. [Filippenko, Alexei V.; Li, Weidong; Silverman, Jeffrey M.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Folatelli, Gaston] Univ Tokyo, Todai Inst Adv Study, Kavli IPMU, WPI, Kashiwa, Chiba 2778583, Japan. [Hsiao, Eric Y.; Morrell, Nidia I.] Las Campanas Observ, Carnegie Observ, La Serena, Chile. [Roepke, Friedrich K.; Seitenzahl, Ivo R.] Univ Wurzburg, Inst Theoret Phys & Astrophys, D-97074 Wurzburg, Germany. [Simcoe, Robert A.] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA. [Ivarsen, Kevin M.; Nysewander, Melissa C.; Reichart, Daniel E.] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA. RP Foley, RJ (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM rfoley@cfa.harvard.edu OI Ropke, Friedrich/0000-0002-4460-0097; Berta-Thompson, Zachory/0000-0002-3321-4924; Seitenzahl, Ivo/0000-0002-5044-2988; Newton, Elisabeth/0000-0003-4150-841X; stritzinger, maximilian/0000-0002-5571-1833 FU Clay Fellowship; NSF; TABASGO Foundation; NASA/HST [GO-12592]; Proyecto FONDECYT [11090421]; proyecto regular UNAB [DI-28-11/R]; Millennium Center for Supernova Science [ICM P10-064-F]; DFG (Transregional Collaborative Research Center) [TRR 33]; JSC, Julich, Germany [PRACE042, HMU14/20] FX This research was supported by a Clay Fellowship (R.J.F.), an NSF Graduate Research Fellowship (E.R.N.), the TABASGO Foundation (A. V. F.), and NASA/HST grant GO-12592. G. P. acknowledges support by the Proyecto FONDECYT 11090421, proyecto regular UNAB DI-28-11/R, and by the grant ICM P10-064-F (Millennium Center for Supernova Science), with input from the "Fondo de Innovacipn para la Competitividad, del Ministerio de Economia, Fomento y Turismo de Chile." S. T. is supported by the DFG (Transregional Collaborative Research Center TRR 33). The simulations were performed at JSC, Julich, Germany (grants PRACE042, HMU14/20). NR 50 TC 34 Z9 34 U1 1 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 EI 2041-8213 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD JUL 1 PY 2012 VL 753 IS 1 AR L5 DI 10.1088/2041-8205/753/1/L5 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 963QK UT WOS:000305637900005 ER PT J AU Bernhardt, CE Horton, BP Stanley, JD AF Bernhardt, Christopher E. Horton, Benjamin P. Stanley, Jean-Daniel TI Nile Delta vegetation response to Holocene climate variability SO GEOLOGY LA English DT Article ID CULTURAL RESPONSES; EGYPT; ENVIRONMENT; INSOLATION; EVOLUTION; AFRICA; SEA AB A 7000 yr palynologic record from Burullus Lagoon, Nile Delta, Egypt, is assessed to investigate changes in terrestrial vegetation in response to Nile flow. Previous studies in this region have shown that sea-level rise in the early to mid-Holocene, and markedly increased human land use during the past several centuries, altered vegetation in and around the lagoon. The pollen record from this study documents changes in delta vegetation that likely reflect variations in Nile flow. We suggest that Cyperaceae pollen is a sensitive marker of precipitation over the Nile headwaters and the resultant Nile flow. Decreases in Cyperaceae pollen, interpreted as a marker for diminished Nile flow, as well as the increase in relative abundance of microscopic charcoal, occurred at ca. 6000-5500, ca. 5000, ca. 4200, and ca. 3000 cal. yr B.P. (calibrated years before present). These correspond to extreme regional and global aridity events associated with a more southerly mean position of the Intertropical Convergence Zone. These changes, also recorded by other proxy studies, indicate that several marked regional drought events affected the Nile Delta region and impacted ancient Egyptian and Middle Eastern civilizations. C1 [Bernhardt, Christopher E.] US Geol Survey, Natl Ctr 926A, Reston, VA 20192 USA. [Bernhardt, Christopher E.; Horton, Benjamin P.] Univ Penn, Dept Earth & Environm Sci, Philadelphia, PA 19104 USA. [Stanley, Jean-Daniel] Smithsonian Inst, Dept Paleobiol, Geoarchaeol Program, Washington, DC 20013 USA. RP Bernhardt, CE (reprint author), US Geol Survey, Natl Ctr 926A, Reston, VA 20192 USA. EM cbernhardt@usgs.gov FU University of Pennsylvania FX The first author thanks the University of Pennsylvania for financial support and the U.S. Geological Survey, Reston, Virginia, for laboratory support for palynological analysis. The Smithsonian's Delta-Global Change Program in Egypt collected and provided access to core samples at the National Museum of Natural History, Washington, D.C. Thomas Sheehan and Bryan Landacre assisted in processing samples for pollen. D.A. Willard, T. Cronin, and three anonymous reviewers provided insightful reviews that significantly improved the manuscript. NR 38 TC 32 Z9 32 U1 3 U2 23 PU GEOLOGICAL SOC AMER, INC PI BOULDER PA PO BOX 9140, BOULDER, CO 80301-9140 USA SN 0091-7613 J9 GEOLOGY JI Geology PD JUL PY 2012 VL 40 IS 7 BP 615 EP 618 DI 10.1130/G33012.1 PG 4 WC Geology SC Geology GA 966DX UT WOS:000305818900010 ER PT J AU Manchester, SR Herrera, F Fourtanier, E Barron, J Martinez, JN AF Manchester, Steven R. Herrera, Fabiany Fourtanier, Elisabeth Barron, John Martinez, Jean-Noel TI Oligocene Age of the Classic Belen Fruit and Seed Assemblage of North Coastal Peru based on Diatom Biostratigraphy SO JOURNAL OF GEOLOGY LA English DT Article ID SOUTH-AMERICA; PHYTOGEOGRAPHY; ORIGINS; HISTORY; BASIN AB The Belen flora, in north coastal Peru, is the most diverse fruit and seed assemblage yet known from the Paleogene of South America. Little original paleobotanical work has been performed on this assemblage since the pioneering treatments published by E. W. Berry in the 1920s, and the precise age has not been determined. Nevertheless, the flora has been regarded as a focal point in understanding the vegetational, orogenic, and climatic history of northern South America, and in recent literature it has been assumed to be early Eocene. In order to tighten this age assignment, which has varied from early Eocene to early Oligocene in the opinions of different authors, we revisited the Belen site, measured the stratigraphic section, and processed the fruit-and seed-containing sediment for age-diagnostic microfossils. Although pollen and foraminifera were not recovered, the sediment is rich in diatoms. The diatom assemblage includes Lisitzinia ornata and Rocella vigilans, among others, indicating a latest early Oligocene age (similar to 30-28.5 Ma) for these deeper marine sediments, which we infer to have been subsequently reworked into the Belen environment. We also reevaluate the botanical identifications, which are based on the original museum specimens supplemented by more recently collected specimens. The Belen flora provides a window into extinct forests in South America that were present before the rising of the Andes in western Peru. C1 [Manchester, Steven R.; Herrera, Fabiany] Univ Florida, Florida Museum Nat Hist, Dept Biol, Gainesville, FL 32611 USA. [Herrera, Fabiany] Smithsonian Trop Res Inst, Balboa, Ancon, Panama. [Fourtanier, Elisabeth] Calif Acad Sci, San Francisco, CA 94118 USA. [Barron, John] US Geol Survey, Menlo Pk, CA 94025 USA. [Martinez, Jean-Noel] Univ Nacl Piura, Inst Paleontol, Piura, Peru. RP Manchester, SR (reprint author), Univ Florida, Florida Museum Nat Hist, Dept Biol, Gainesville, FL 32611 USA. EM steven@flmnh.ufl.edu FU National Science Foundation [BSR-0743474] FX Fieldwork and analyses were supported by National Science Foundation grant BSR-0743474 (to S. R. Manchester). We thank F. Navarro for assistance in field reconnaissance and collection. Helpful review comments were provided by C. Jaramillo, T. Lott, and an anonymous reviewer. NR 30 TC 3 Z9 3 U1 0 U2 5 PU UNIV CHICAGO PRESS PI CHICAGO PA 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA SN 0022-1376 J9 J GEOL JI J. Geol. PD JUL PY 2012 VL 120 IS 4 BP 467 EP 476 DI 10.1086/665797 PG 10 WC Geology SC Geology GA 965FL UT WOS:000305752500007 ER PT J AU Spitler, LR Romanowsky, AJ Diemand, J Strader, J Forbes, DA Moore, B Brodie, JP AF Spitler, Lee R. Romanowsky, Aaron J. Diemand, Juerg Strader, Jay Forbes, Duncan A. Moore, Ben Brodie, Jean P. TI Evidence for inhomogeneous reionization in the local Universe from metal-poor globular cluster systems SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Review DE galaxies: haloes; galaxies: kinematics and dynamics; galaxies: star clusters: general; dark ages; reionization; first stars ID DARK-MATTER HALO; STAR-FORMING GALAXIES; HIGH-REDSHIFT GALAXIES; LY-ALPHA EMITTERS; DWARF COOLING SEQUENCE; HUBBLE-SPACE-TELESCOPE; ULTRA-DEEP-FIELD; ELLIPTIC GALAXIES; STELLAR POPULATIONS; COLOR DISTRIBUTIONS AB Exploiting a fundamental characteristic of galaxy assembly in the ? cold dark matter paradigm, the observed spatial biasing and kinematics of metal-poor globular star clusters are used to constrain the local reionization epoch around individual galaxies. Selecting three galaxies located in different environments, the first attempt at constraining the environmental propagation of reionization in the local Universe is carried out. The joint constraint from the three galaxies () agrees remarkably well with the latest Wilkinson Microwave Anisotropy Probe constraint on zreion for a simple instantaneous reionization model. More importantly, the range of zreion values found here is consistent with the global range of zreion estimates from other observations. We furthermore find a 1.7s indication that reionization completed in low-density environments before the intergalactic medium in high-density environments was reionized. This is consistent with certain theoretical models that predict that reionization was globally prolonged in duration, with neutral hydrogen pockets surviving in high-density environments, even after the surrounding regions were reionized. More generally, this work provides a useful constraint on the formation history of galaxy stellar haloes. C1 [Spitler, Lee R.; Forbes, Duncan A.] Swinburne Univ, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia. [Romanowsky, Aaron J.; Brodie, Jean P.] Univ Calif Observ, Santa Cruz, CA 95064 USA. [Diemand, Juerg; Moore, Ben] Univ Zurich, Inst Theoret Phys, CH-8057 Zurich, Switzerland. [Strader, Jay] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Spitler, LR (reprint author), Swinburne Univ, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia. EM lspitler@astro.swin.edu.au RI Spitler, Lee/A-9867-2013; Diemand, Juerg/G-9448-2011 OI Spitler, Lee/0000-0001-5185-9876; FU ARC [DP0770233, DP1094370]; National Science Foundation [AST-0808099, AST-0909237, AST-1109878]; Gemini programme [GN-2006B-C-18]; W.M. Keck Foundation FX We want to acknowledge the useful comments provided by the anonymous reviewer. We also thank Chris Blake for assistance with the cosmological derivations and Anna Sippel for help with the initial Subaru reductions. LRS was supported by the ARC Discovery Programme grants DP0770233 and DP1094370. This work was supported by the National Science Foundation through grants AST-0808099, AST-0909237 and AST-1109878. DAF thanks the ARC Discovery Programme for support. This paper was based in part on data collected at Subaru Telescope, which is operated by the National Astronomical Observatory of Japan. Some of the Subaru data were acquired with the time-swap Gemini programme GN-2006B-C-18. Some of the data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The observatory was made possible by the generous financial support of the W.M. Keck Foundation. Observations reported here were obtained at the MMT Observatory, a joint facility of the Smithsonian Institution and the University of Arizona. NR 133 TC 13 Z9 13 U1 0 U2 2 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUL PY 2012 VL 423 IS 3 BP 2177 EP 2189 DI 10.1111/j.1365-2966.2012.21029.x PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961NA UT WOS:000305470100015 ER PT J AU Pan, T Loeb, A Kasen, D AF Pan, Tony Loeb, Abraham Kasen, Daniel TI Pair-instability supernovae via collision runaway in young dense star clusters SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE supernovae: general; galaxies: star clusters: general ID WOLF-RAYET STARS; MASS-LOSS RATES; M-CIRCLE-DOT; POPULATION-III; LUMINOSITY FUNCTION; BLACK-HOLES; SPIRAL GALAXIES; LOW-METALLICITY; CORE-COLLAPSE; LIGHT CURVES AB Stars with helium cores between similar to 64 and 133 M? are theoretically predicted to die as pair-instability supernovae. This requires very massive progenitors, which are theoretically prohibited for Pop II/I stars within the Galactic stellar mass limit due to mass-loss via line-driven winds. However, the runaway collision of stars in a dense, young star cluster could create a merged star with sufficient mass to end its life as a pair-instability supernova, even with enhanced mass-loss at non-zero metallicity. We show that the predicted rate from this mechanism is consistent with the inferred volumetric rate of roughly similar to 2 x 10(-9) Mpc-3 yr-1 of the two observed pair-instability supernovae, SN 2007bi and PTF 10nmn, neither of which has metal-free host galaxies. Contrary to prior literature, only pair-instability supernovae at low redshifts z < 2 will be observable with the Large Synoptic Survey Telescope. We estimate that the telescope will observe similar to 102 such events per year that originate from the collisional runaway mergers in clusters. C1 [Pan, Tony; Loeb, Abraham] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Kasen, Daniel] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Kasen, Daniel] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94708 USA. [Kasen, Daniel] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. RP Pan, T (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM span@physics.harvard.edu FU Hertz Foundation; NSF [AST-0907890]; NASA [NNX08AL43G, NNA09DB30A]; Office of Energy Research, Office of High Energy and Nuclear Physics, Divisions of Nuclear Physics, of the U.S. Department of Energy [DE-AC02-05CH11231]; NSF Astronomy and Astrophysics grant [NSF-AST-1109896]; DOE SciDAC Program [DE-FC02-06ER41438] FX We thank Charlie Conroy for helpful comments. TP was supported by the Hertz Foundation. This work was supported in part by NSF grant AST-0907890 and NASA grants NNX08AL43G and NNA09DB30A. DK was supported in part by the Director, Office of Energy Research, Office of High Energy and Nuclear Physics, Divisions of Nuclear Physics, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231, and by an NSF Astronomy and Astrophysics grant NSF-AST-1109896. This research has been supported by the DOE SciDAC Program (DE-FC02-06ER41438). We are grateful for computer time provided by ORNL through an INCITE award and by NERSC. NR 60 TC 21 Z9 21 U1 0 U2 4 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0035-8711 EI 1365-2966 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUL PY 2012 VL 423 IS 3 BP 2203 EP 2208 DI 10.1111/j.1365-2966.2012.21030.x PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961NA UT WOS:000305470100017 ER PT J AU Daly, RA Sprinkle, TB O'Dea, CP Kharb, P Baum, SA AF Daly, Ruth. A. Sprinkle, Trevor B. O'Dea, Christopher P. Kharb, Preeti Baum, Stefi A. TI The relationship between beam power and radio power for classical double radio sources SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE black hole physics; galaxies: active ID X-RAY; BLACK-HOLES; JET POWER; GALAXIES; CLUSTERS; REDSHIFT; SAMPLE; MODEL; QUASARS; LOBES AB Beam power is a fundamental parameter that describes, in part, the state of a supermassive black hole system. Determining the beam powers of powerful classical double radio sources requires substantial observing time, so it would be useful to determine the relationship between beam power and radio power so that radio power could be used as a proxy for beam power. A sample of 31 powerful classical double radio sources with previously determined beam and radio powers is studied; the sources have redshifts between about 0.056 and 1.8. It is found that the relationship between beam power, Lj, and radio power, P, is well described by log Lj similar to 0.84(+/- 0.14)log P+ 2.15(+/- 0.07), where both Lj and P are in units of 10(44) erg s-1. This indicates that beam power is converted to radio power with an efficiency of about 0.7 per cent. The ratio of beam power to radio power is studied as a function of redshift; there is no significant evidence for redshift evolution of this ratio over the redshift range studied. The relationship is consistent with empirical results obtained by Cavagnolo et al. for radio sources in gas-rich environments, which are primarily FanaroffRiley type I sources, and with the theoretical predictions of Willott et al. C1 [Daly, Ruth. A.; Sprinkle, Trevor B.] Penn State Univ, Reading, PA 19608 USA. [O'Dea, Christopher P.; Kharb, Preeti] Rochester Inst Technol, Dept Phys, Rochester, NY 14623 USA. [O'Dea, Christopher P.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Baum, Stefi A.] Rochester Inst Technol, Ctr Imaging Sci, Rochester, NY 14623 USA. [Baum, Stefi A.] Radcliffe Inst Adv Study, Cambridge, MA 02138 USA. RP Daly, RA (reprint author), Penn State Univ, Berks Campus, Reading, PA 19608 USA. EM rdaly@psu.edu FU Penn State University; Radcliffe Institute for Advanced Study at Harvard University FX We would like to thank the referee for very helpful comments and suggestions. This work is supported in part by Penn State University (RAD and TBS) and the Radcliffe Institute for Advanced Study at Harvard University (SAB). NR 40 TC 12 Z9 12 U1 0 U2 1 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUL PY 2012 VL 423 IS 3 BP 2498 EP 2502 DI 10.1111/j.1365-2966.2012.21060.x PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961NA UT WOS:000305470100039 ER PT J AU Beaumont, CN Goodman, AA Alves, JF Lombardi, M Roman-Zuniga, CG Kauffmann, J Lada, CJ AF Beaumont, Christopher N. Goodman, Alyssa A. Alves, Joao F. Lombardi, Marco Roman-Zuniga, Carlos G. Kauffmann, Jens Lada, Charles J. TI A simple perspective on the mass-area relationship in molecular clouds SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE stars: formation; ISM: clouds; ISM: structure ID DENSITY PROBABILITY-DISTRIBUTION; COLUMN-DENSITY; PHYSICAL-PROPERTIES; STAR-FORMATION; SIZE RELATION; TURBULENCE; II.; UNIVERSALITY; VELOCITY; MODELS AB Despite over 30 yr of study, the massarea relationship within and among clouds is still poorly understood both observationally and theoretically. Modern extinction data sets should have sufficient resolution and dynamic range to characterize this relationship for nearby molecular clouds, although recent papers using extinction data seem to yield different interpretations regarding the nature and universality of this aspect of cloud structure. In this paper we try to unify these various results and interpretations by accounting for the different ways cloud properties are measured and analysed. We interpret the massarea relationship in terms of the column density distribution function and its possible variation within and among clouds. We quantitatively characterize regional variations in the column density probability distribution function (PDF). We show that structures both within and among clouds possess the same degree of universality, in that their PDF means do not systematically scale with structure size. Because of this, mass scales linearly with area. C1 [Beaumont, Christopher N.] Univ Hawaii Manoa, Inst Astron, Honoulu, HI 96822 USA. [Beaumont, Christopher N.; Goodman, Alyssa A.; Lada, Charles J.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Alves, Joao F.] Univ Vienna, Inst Astron, A-1180 Vienna, Austria. [Lombardi, Marco] Univ Milan, Dipartmento Fis, I-20133 Milan, Italy. [Roman-Zuniga, Carlos G.] Univ Nacl Autonoma Mexico, Inst Astron, Ensenada 22860, BC, Mexico. [Kauffmann, Jens] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. RP Beaumont, CN (reprint author), Univ Hawaii Manoa, Inst Astron, 2680 Woodlawn Dr, Honoulu, HI 96822 USA. EM beaumont@ifa.hawaii.edu RI Goodman, Alyssa/A-6007-2010; Roman-Zuniga, Carlos/F-6602-2016; OI Goodman, Alyssa/0000-0003-1312-0477; Roman-Zuniga, Carlos/0000-0001-8600-4798; LOMBARDI, MARCO/0000-0002-3336-4965; Alves, Joao/0000-0002-4355-0921 NR 36 TC 17 Z9 17 U1 0 U2 2 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0035-8711 EI 1365-2966 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUL PY 2012 VL 423 IS 3 BP 2579 EP 2586 DI 10.1111/j.1365-2966.2012.21061.x PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961NA UT WOS:000305470100044 ER PT J AU Ratti, EM Jonker, PG Miller-Jones, JCA Torres, MAP Homan, J Markoff, S Tomsick, JA Kaaret, P Wijnands, R Gallo, E Ozel, F Steeghs, DTH Fender, RP AF Ratti, E. M. Jonker, P. G. Miller-Jones, J. C. A. Torres, M. A. P. Homan, J. Markoff, S. Tomsick, J. A. Kaaret, P. Wijnands, R. Gallo, E. Oezel, F. Steeghs, D. T. H. Fender, R. P. TI The black hole candidate XTE J1752-223 towards and in quiescence: optical and simultaneous X-ray-radio observations SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE accretion, accretion discs; binaries: general; stars: individual: XTE J1752-223; X-rays: binaries ID SPECTRAL STATE TRANSITION; VLBA CALIBRATOR SURVEY; HARD STATE; SWIFT OBSERVATIONS; LOW/HARD STATE; OUTBURST DECAY; BINARIES; J1550-564; CHANDRA; JETS AB We present optical, X-ray and radio observations of the black hole transient (BHT) XTE J1752-223 towards and in quiescence. Optical photometry shows that the quiescent magnitude of XTE J1752-223 is fainter than 24.4 mag in the i' band. A comparison with measurements of the source during its 20092010 outburst shows that the outburst amplitude is more than 8 mag in the i' band. Known X-ray properties of the source combined with the faintness of the quiescence optical counterpart and the large outburst optical amplitude point towards a short orbital-period system (Porb? 6.8 h) with an M type (or later) mass donor, at a distance of 3.5 ?d? 8 kpc. Simultaneous X-ray and radio data were collected with Chandra and the Expanded Very Large Array (EVLA), allowing constraints to be placed on the quiescent X-ray and radio flux of XTE J1752-223. Furthermore, using data covering the final stage of the outburst decay, we investigated the low-luminosity end of the X-rayradio correlation for this source and compared it with other BHTs. We found that XTE J1752-223 adds to the number of outliers with respect to the standard X-rayradio luminosity relation. Furthermore, XTE J1752-223 is the second source, after the BHT H1743-322, that shows a transition from the region of the outliers towards the standard correlation at low luminosity. Finally, we report on a faint, variable X-ray source we discovered with Chandra at an angular distance of similar to 2.9 arcsec to XTE J1752-223 and at a position angle consistent with that of the radio jets previously observed from the BHT. We discuss the possibility that we detected X-ray emission associated with a jet from XTE J1752-223. C1 [Ratti, E. M.; Jonker, P. G.; Torres, M. A. P.] SRON, Netherlands Inst Space Res, NL-3584 CA Utrecht, Netherlands. [Jonker, P. G.; Torres, M. A. P.; Steeghs, D. T. H.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Jonker, P. G.] Radboud Univ Nijmegen, Dept Astrophys, IMAPP, NL-6525 AJ Nijmegen, Netherlands. [Miller-Jones, J. C. A.] Curtin Univ Technol, Int Ctr Radio Astron Res, Perth, WA 6845, Australia. [Homan, J.] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA. [Markoff, S.; Wijnands, R.] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1090 GE Amsterdam, Netherlands. [Tomsick, J. A.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA. [Kaaret, P.] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA. [Gallo, E.] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA. [Oezel, F.] Univ Arizona, Dept Astron, Tucson, AZ 85721 USA. [Steeghs, D. T. H.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. [Fender, R. P.] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England. RP Ratti, EM (reprint author), SRON, Netherlands Inst Space Res, Sorbonnelaan 2, NL-3584 CA Utrecht, Netherlands. EM e.m.ratti@sron.nl RI Miller-Jones, James/B-2411-2013; Steeghs, Danny/C-5468-2009 OI Miller-Jones, James/0000-0003-3124-2814; Steeghs, Danny/0000-0003-0771-4746 FU VIDI grant from the Netherlands Organization for Scientific Research; European Research council Starting Grants; STFC Advanced Fellowship FX Mathieu Servillat is acknowledged for providing the CTIO observation of 2010 August 31. EMR acknowledges Sara Motta for the information about the RXTE data. PGJ acknowledges support from a VIDI grant from the Netherlands Organization for Scientific Research. RW acknowledges support from the European Research council Starting Grants. DTHS acknowledges an STFC Advanced Fellowship. NR 63 TC 37 Z9 37 U1 0 U2 3 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUL PY 2012 VL 423 IS 3 BP 2656 EP 2667 DI 10.1111/j.1365-2966.2012.21071.x PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961NA UT WOS:000305470100052 ER PT J AU Jelic, V Smolcic, V Finoguenov, A Tanaka, M Civano, F Schinnerer, E Cappelluti, N Koekemoer, A AF Jelic, Vibor Smolcic, Vernesa Finoguenov, Alexis Tanaka, Masayuki Civano, Francesca Schinnerer, Eva Cappelluti, Nico Koekemoer, Anton TI Extended X-ray emission from non-thermal sources in the COSMOS field: a detailed study of a large radio galaxy at z=1.168 SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE radiation mechanisms: non-thermal; radiation mechanisms: thermal; surveys; galaxies: active; radio continuum: galaxies; X-rays: galaxies: clusters ID ACTIVE GALACTIC NUCLEI; NEWTON-DEEP-FIELD; PHOTOMETRIC REDSHIFT; SOURCE CATALOG; HOT-SPOTS; CLUSTERS; LOBES; ENVIRONMENTS; POPULATION; EVOLUTION AB X-ray selected galaxy group samples are usually generated by searching for extended X-ray sources that reflect the thermal radiation of the intragroup medium. On the other hand, large radio galaxies that regularly occupy galaxy groups also emit in the X-ray window, and their contribution to X-ray selected group samples is still not well understood. In order to investigate their relative importance, we have carried out a systematic search for non-thermal extended X-ray sources in the Cosmic Evolution Survey (COSMOS) field. Based on the morphological coincidence of X-ray and radio extensions, out of 60 radio galaxies, and similar to 300 extended X-ray sources, we find only one candidate where the observed extended X-ray emission arises from non-thermal processes related to radio galaxies. We present a detailed analysis of this source, and its environment. Our results yield that external inverse Compton emission of the lobes is the dominant process that generates the observed X-ray emission of our extended X-ray candidate, with a minor contribution from the gas of the galaxy group hosting the radio galaxy. Finally, we show that finding only one potential candidate in the COSMOS field (in a redshift range 0 < z < 6 and with radio luminosity between 1025 and 1030 W Hz-1) is consistent with expected X-ray counts arising from synchrotron lobes. This implies that these sources are not a prominent source of contamination in samples of X-ray selected clusters/groups, but they could potentially dominate the z > 1 cluster counts at the bright end (SX > 7 x 10(-15) erg s-1 cm2). C1 [Jelic, Vibor] Netherlands Inst Radio Astron, ASTRON, NL-7990 AA Dwingeloo, Netherlands. [Smolcic, Vernesa] Argelander Inst Astron, D-53121 Bonn, Germany. [Smolcic, Vernesa] European So Observ, D-85748 Garching, Germany. [Smolcic, Vernesa] Univ Zagreb, Dept Phys, Zagreb 10002, Croatia. [Finoguenov, Alexis] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. [Finoguenov, Alexis] Univ Maryland Baltimore Cty, Ctr Space Sci Technol, Baltimore, MD 21250 USA. [Tanaka, Masayuki] Univ Tokyo, Inst Phys & Math Universe, Kashiwa, Chiba 2778583, Japan. [Civano, Francesca] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Schinnerer, Eva] Max Planck Inst Astron, D-69117 Heidelberg, Germany. [Cappelluti, Nico] INAF Osservatorio Astron Bologna, I-40127 Bologna, Italy. [Koekemoer, Anton] Space Telescope Sci Inst, Baltimore, MD 21218 USA. RP Jelic, V (reprint author), Netherlands Inst Radio Astron, ASTRON, POB 2, NL-7990 AA Dwingeloo, Netherlands. EM jelic@astron.nl RI Jelic, Vibor/B-2938-2014; OI Jelic, Vibor/0000-0002-6034-8610; Cappelluti, Nico/0000-0002-1697-186X; Schinnerer, Eva/0000-0002-3933-7677; Koekemoer, Anton/0000-0002-6610-2048 FU European Union [229517]; World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan; KAKENHI [23740144] FX We acknowledge the anonymous referees for their constructive comments. This research is in part funded by the European Union's Seventh Framework programme under grant agreement 229517 and contract PRIN-INAF 2007, by World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan and by KAKENHI No. 23740144. FC acknowledges the Blancheflor Boncompagni Ludovisi foundation and the Smithsonian Scholarly Studies. NR 59 TC 6 Z9 6 U1 0 U2 1 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUL PY 2012 VL 423 IS 3 BP 2753 EP 2763 DI 10.1111/j.1365-2966.2012.21085.x PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961NA UT WOS:000305470100061 ER PT J AU Calabrese, JM AF Calabrese, Justin M. TI How emergence and death assumptions affect count-based estimates of butterfly abundance and lifespan SO POPULATION ECOLOGY LA English DT Article DE Butterflies; Insect count analyzer; Monitoring; Phenology; Transect count data; Zonneveld model ID REPRODUCTIVE ASYNCHRONY; CLIMATE-CHANGE; BRITISH BUTTERFLIES; TRANSECT COUNTS; POPULATION; MODELS; PROTANDRY; SURVIVAL; TIME; UNCERTAINTY AB Transect count data form the basis of many butterfly and other insect monitoring programs worldwide. A clear understanding of the limitations of such datasets, including the potential for biases in the statistical methods used to analyze them, is therefore crucial. The classical Zonneveld model (CZ) can extract estimates of a suite of demographic parameters from transect count datasets, and has also been used in theoretical analyses of protandry and reproductive asynchrony. The CZ relies on strong assumptions about the emergence and death processes underlying observed transect count datasets. Though reasonable as a starting place, a growing body of empirical evidence suggests these assumptions will, in many cases, not hold. Here, I explore how violations of these assumptions bias CZ-based estimates of two key population parameters: total population size and mean individual lifespan. To do this, I generalize the Zonneveld model by relaxing the symmetrical emergence distribution and constant death rate assumptions such that the generalized models contain the CZ as a special case. Using the generalized models as data generating processes, I then show that the CZ is able to closely mimic the shape of the abundance time course produced by either variant of the generalized model under a wide range of conditions, but produces highly biased estimates of population size and mean lifespan in doing so. My analysis therefore demonstrates both that the CZ is not robust to violations of its emergence and death assumptions, and that a good observed fit to transect count data does not mean these assumptions are satisfied. C1 [Calabrese, Justin M.] Smithsonian Conservat Biol Inst, Conservat Ecol Ctr, Front Royal, VA 22630 USA. [Calabrese, Justin M.] UFZ Helmholtz Ctr Environm Res, D-04318 Leipzig, Germany. RP Calabrese, JM (reprint author), Smithsonian Conservat Biol Inst, Conservat Ecol Ctr, Natl Zool Pk,1500 Remount Rd, Front Royal, VA 22630 USA. EM CalabreseJ@si.edu RI Calabrese, Justin/B-9131-2012 NR 42 TC 6 Z9 6 U1 0 U2 19 PU SPRINGER TOKYO PI TOKYO PA 1-11-11 KUDAN-KITA, CHIYODA-KU, TOKYO, 102-0073, JAPAN SN 1438-3896 J9 POPUL ECOL JI Popul. Ecol. PD JUL PY 2012 VL 54 IS 3 BP 431 EP 442 DI 10.1007/s10144-012-0316-7 PG 12 WC Ecology SC Environmental Sciences & Ecology GA 964IW UT WOS:000305688400008 ER PT J AU Hobbs, RJ Howard, J Wildt, DE Comizzoli, P AF Hobbs, Rebecca J. Howard, JoGayle Wildt, David E. Comizzoli, Pierre TI Absence of seasonal changes in FSHR gene expression in the cat cumulus-oocyte complex in vivo and in vitro SO REPRODUCTION LA English DT Article ID FOLLICLE-STIMULATING-HORMONE; RIBONUCLEIC-ACID EXPRESSION; GROWTH-FACTOR RECEPTOR; RAT GRANULOSA-CELLS; DOMESTIC CAT; LUTEINIZING-HORMONE; EMBRYO DEVELOPMENT; GONADOTROPIN STIMULATION; MOLECULAR-CLONING; MESSENGER-RNA AB Domestic cat oocytes are seasonally sensitive to FSH. Compared with those collected during the breeding season, oocytes from the nonbreeding (NB) season require more FSH during in vitro maturation to achieve comparable developmental competence. This study tested the hypothesis that this seasonal variation was due to altered expression of FSH receptors (FSHR) and/or FSH-induced genes. Relative expression levels of FSHR mRNA and FSH-enhanced gene estrogen receptor beta (ESR2) were measured by qPCR in whole ovaries and immature cumulus-oocyte complexes (COCs) isolated from cat ovaries during the natural breeding vs NB seasons. Expression levels of FSH-induced genes prostaglandin-endoperoxide synthase 2 (PTGS2), early growth response protein-1 (EGR1), and epidermal growth factor receptor (EGFR) were examined in mature COCs from both seasons that were a) recovered in vivo or b) matured in vitro with conventional (1 mu g/ml) or high (10 mu g/ml) FSH concentrations. Overall, FSHR mRNA levels were lower in whole ovaries during the NB compared with breeding season but were similar in immature COCs, whereas ESR2 levels did not differ in either group between intervals. We observed changes in PTGS2, EGR1, and EGFR mRNA expression patterns across maturation in COCs within but not between the two seasons. The lack of seasonal differentiation in FSH-related genes was not consistent with the decreased developmental capacity of oocytes fertilized during the NB season. These findings reveal that the seasonal decrease in cat oocyte sensitivity to FSH occurs both in vivo and in vitro. Furthermore, this decline is unrelated to changes in expression of FSHR mRNA or mRNA of FSH-induced genes in COCs from antral follicles. Reproduction (2012) 144 111-122 C1 [Hobbs, Rebecca J.; Howard, JoGayle; Comizzoli, Pierre] Ctr Species Survival, Smithsonian Conservat Biol Inst, Washington, DC 20013 USA. [Wildt, David E.] Ctr Species Survival, Smithsonian Conservat Biol Inst, Front Royal, VA 22630 USA. RP Hobbs, RJ (reprint author), Ctr Species Survival, Smithsonian Conservat Biol Inst, Natl Zool Pk,Box 37012,MRC 5502, Washington, DC 20013 USA. EM hobbsr@si.edu FU Lalor foundation Postdoctoral Fellowship FX This work was funded in part by the Lalor foundation Postdoctoral Fellowship and a gift from Dr Clinton and Missy Kelly. NR 78 TC 4 Z9 5 U1 0 U2 5 PU BIOSCIENTIFICA LTD PI BRISTOL PA EURO HOUSE, 22 APEX COURT WOODLANDS, BRADLEY STOKE, BRISTOL BS32 4JT, ENGLAND SN 1470-1626 J9 REPRODUCTION JI Reproduction PD JUL PY 2012 VL 144 IS 1 BP 111 EP 122 DI 10.1530/REP-12-0098 PG 12 WC Developmental Biology; Reproductive Biology SC Developmental Biology; Reproductive Biology GA 966FC UT WOS:000305822000011 PM 22596062 ER PT J AU Vari, RP De Santana, CD Wosiacki, WB AF Vari, Richard P. De Santana, Carlos David Wosiacki, Wolmar B. TI South American electric knifefishes of the genus Archolaemus (Ostariophysi, Gymnotiformes): undetected diversity in a clade of rheophiles SO ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY LA English DT Article DE Guiana and Brazilian shields; monophyly; new species; revision; sexual dimorphism; Sternopygidae ID TOCANTINS RIVER-BASIN; CENTRAL BRAZIL; RHABDOLICHOPS GYMNOTIFORMES; FISHES GYMNOTIFORMES; STERNOPYGIDAE; TELEOSTEI; AMAZON; DIAGNOSIS; EVOLUTION; XINGU AB Neotropical electric knifefishes of the family Sternopygidae previously considered to represent a single relatively geographically widespread and morphologically variable species, Archolaemus blax, were analysed and found to represent a complex of five species, four of which are new to science. A fifth undescribed species from the Rio Sao Francisco basin outside the previous known range of the genus was identified. Recognized species of Archolaemus are: A. blax, previously thought to occur in the Rio Araguari, Rio Branco, Rio Tapajos, Rio Tocantins, and Rio Xingu, but which instead proved to be endemic to the Rio Tocantins; Archolaemus ferreirai sp. nov. from the Rio Mucajai and Rio Uraricoera in the north-eastern portions of the Amazon basin; Archolaemus janeae sp. nov. of the Rio Xingu and the upper Rio Tapajos, both southern tributaries of the mainstream Amazon; Archolaemus luciae sp. nov. of the Rio Trombetas, Rio Jari, and Rio Tapajos basins of the eastern Amazon, and the independent Rio Araguari draining into the Atlantic Ocean north of the mouth of the Amazon; Archolaemus orientalis sp. nov. of the Sao Francisco basin in eastern Brazil; and Archolaemus santosi sp. nov. of the Rio Jamari in the south-western portion of the Amazon basin. The phylogenetic placements of Archolaemus and the recently described genus Japigny relative to the other members of the Eigenmanninae are discussed. A series of synapomorphies for Archolaemus are proposed and a hypothesis of the relationships within that genus is advanced. Rheophily of all members of Archolaemus is discussed, with the genus found to be the most specious clade within the Gymnotiformes living primarily in high-energy settings. The reported anterior projection of the dentary teeth in A. blax was found to be a consequence of postmortem displacement. C1 [Vari, Richard P.] Smithsonian Inst, Div Fishes, Dept Vertebrate Zool, Natl Museum Nat Hist, Washington, DC 20013 USA. [De Santana, Carlos David; Wosiacki, Wolmar B.] Museu Paraense Emilio Goeldi, Setor Ictiol, BR-66040170 Belem, Para, Brazil. RP Vari, RP (reprint author), Smithsonian Inst, Div Fishes, Dept Vertebrate Zool, Natl Museum Nat Hist, MRC 159,POB 37012, Washington, DC 20013 USA. EM varir@si.edu RI Wosiacki, Wolmar/I-1724-2012 OI Wosiacki, Wolmar/0000-0002-4013-8501 FU Herbert R. and Evelyn Axelrod Chair in Systematic Ichthyology, National Museum of Natural History, Smithsonian Institution; CNPq; Fundacao de Amparo a Pesquisa de Estado do Para [FAPESPA: 154/2010] FX Support for this project was provided by the Herbert R. and Evelyn Axelrod Chair in Systematic Ichthyology, National Museum of Natural History, Smithsonian Institution to R. P. V., and by a fellowship from CNPq and the Fundacao de Amparo a Pesquisa de Estado do Para (FAPESPA: 154/2010) to C. D. S. We are indebted to the following individuals and institutions for access to specimens and assistance during visits: Lucia Rapp Py-Daniel (INPA), Paulo Buckup (MNRJ), and Osvaldo Oyakawa and Mario de Pinna (MZUSP). We thank Bruno Prudente and Sandra Raredon (USNM) for the maps, Renildo de Oliveira and Luiz Peixoto for assistance with some of the photographs, Guilherme Dutra and Luiz Peixoto for fruitful discussions on the Sternopygidae, and Jose Birindelli and Tiago Pessali for information on the habitat of some species of Archolaemus. The article benefitted from detailed comments received from Carl J. Ferraris, Gloria Arratia, and an anonymous reviewer. NR 54 TC 8 Z9 12 U1 4 U2 14 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0024-4082 J9 ZOOL J LINN SOC-LOND JI Zool. J. Linn. Soc. PD JUL PY 2012 VL 165 IS 3 BP 670 EP 699 DI 10.1111/j.1096-3642.2012.00827.x PG 30 WC Zoology SC Zoology GA 964HP UT WOS:000305685000005 ER PT J AU Bakos, GA Hartman, JD Torres, G Beky, B Latham, DW Buchhave, LA Csubry, Z Kovacs, G Bieryla, A Quinn, S Szklenar, T Esquerdo, GA Shporer, A Noyes, RW Fischer, DA Johnson, JA Howard, AW Marcy, GW Sato, B Penev, K Everett, M Sasselov, DD Furesz, G Stefanik, RP Lazar, J Papp, I Sari, P AF Bakos, G. A. Hartman, J. D. Torres, G. Beky, B. Latham, D. W. Buchhave, L. A. Csubry, Z. Kovacs, G. Bieryla, A. Quinn, S. Szklenar, T. Esquerdo, G. A. Shporer, A. Noyes, R. W. Fischer, D. A. Johnson, J. A. Howard, A. W. Marcy, G. W. Sato, B. Penev, K. Everett, M. Sasselov, D. D. Furesz, G. Stefanik, R. P. Lazar, J. Papp, I. Sari, P. TI HAT-P-34b-HAT-P-37b: FOUR TRANSITING PLANETS MORE MASSIVE THAN JUPITER ORBITING MODERATELY BRIGHT STARS SO ASTRONOMICAL JOURNAL LA English DT Article DE planetary systems; stars: individual (HAT-P-34, GSC 1622-01261, HAT-P-35, GSC 0203-01079, HAT-P-36, ... ...); techniques: photometric; techniques: spectroscopic ID RADIAL-VELOCITY MEASUREMENTS; CLOSE BINARY STARS; SOLAR-TYPE STAR; HOT-JUPITER; TIDAL EVOLUTION; ECCENTRIC ORBIT; GIANT PLANET; K-DWARF; CHROMOSPHERIC ACTIVITY; ECLIPSING BINARIES AB We report the discovery of four transiting extrasolar planets (HAT-P-34b-HAT-P-37b) with masses ranging from 1.05 to 3.33 M-J and periods from 1.33 to 5.45 days. These planets orbit relatively bright F and G dwarf stars (from V = 10.16 to V = 13.2). Of particular interest is HAT-P-34b which is moderately massive (3.33 M-J), has a high eccentricity of e = 0.441 +/- 0.032 at a period of P = 5.452654 +/- 0.000016 days, and shows hints of an outer component. The other three planets have properties that are typical of hot Jupiters. C1 [Bakos, G. A.; Hartman, J. D.; Csubry, Z.; Penev, K.] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA. [Bakos, G. A.; Hartman, J. D.; Torres, G.; Beky, B.; Latham, D. W.; Csubry, Z.; Bieryla, A.; Quinn, S.; Szklenar, T.; Esquerdo, G. A.; Noyes, R. W.; Penev, K.; Everett, M.; Sasselov, D. D.; Furesz, G.; Stefanik, R. P.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Buchhave, L. A.] Univ Copenhagen, Nat Hist Museum Denmark, Ctr Star & Planet Format, DK-1350 Copenhagen, Denmark. [Buchhave, L. A.] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark. [Kovacs, G.] Konkoly Observ Budapest, Budapest, Hungary. [Shporer, A.] LCOGT, Santa Barbara, CA USA. [Shporer, A.] UC Santa Barbara, Dept Phys, Santa Barbara, CA USA. [Fischer, D. A.] Yale Univ, Dept Astron, New Haven, CT 06511 USA. [Johnson, J. A.] CALTECH, Dept Astrophys, Pasadena, CA 91125 USA. [Howard, A. W.; Marcy, G. W.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Sato, B.] Tokyo Inst Technol, Dept Earth & Planetary Sci, Meguro Ku, Tokyo 1528551, Japan. [Lazar, J.; Papp, I.; Sari, P.] Hungarian Astron Assoc, Budapest, Hungary. RP Bakos, GA (reprint author), Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA. EM gbakos@astro.princeton.edu RI Howard, Andrew/D-4148-2015; OI Howard, Andrew/0000-0001-8638-0320; Penev, Kaloyan/0000-0003-4464-1371; Buchhave, Lars A./0000-0003-1605-5666; Hartman, Joel/0000-0001-8732-6166; Fischer, Debra/0000-0003-2221-0861 FU NASA [NNG04GN74G, NNX08AF23G]; NSF [AST-1108686]; Kepler Mission under NASA [NCC2-1390]; Hungarian Scientific Research Foundation (OTKA) [K-81373] FX HATNet operations have been funded by NASA grants NNG04GN74G and NNX08AF23G. We acknowledge partial funding of the HATNet follow-up effort from NSF AST-1108686. We acknowledge partial support also from the Kepler Mission under NASA Cooperative Agreement NCC2-1390 (D.W.L. and PI). G.K. thanks the Hungarian Scientific Research Foundation (OTKA) for support through grant K-81373. This research has made use of Keck telescope time granted through NOAO (program A289Hr) and NASA (N167Hr and N029Hr). This paper uses observations obtained with facilities of the Las Cumbres Observatory Global Telescope. Data presented in this paper are based on observations obtained at the HAT station at the Submillimeter Array of SAO, and HAT station at the Fred Lawrence Whipple Observatory of SAO. The authors recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. NR 88 TC 28 Z9 29 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-6256 J9 ASTRON J JI Astron. J. PD JUL PY 2012 VL 144 IS 1 AR 19 DI 10.1088/0004-6256/144/1/19 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 960VB UT WOS:000305418600019 ER PT J AU Gladman, B Lawler, SM Petit, JM Kavelaars, J Jones, RL Parker, JW Van Laerhoven, C Nicholson, P Rousselot, P Bieryla, A Ashby, MLN AF Gladman, B. Lawler, S. M. Petit, J. -M. Kavelaars, J. Jones, R. L. Parker, J. Wm. Van Laerhoven, C. Nicholson, P. Rousselot, P. Bieryla, A. Ashby, M. L. N. TI THE RESONANT TRANS-NEPTUNIAN POPULATIONS SO ASTRONOMICAL JOURNAL LA English DT Article DE celestial mechanics; Kuiper Belt: general ID MEAN-MOTION RESONANCES; JUPITER-FAMILY COMETS; KUIPER-BELT OBJECTS; OUTER SOLAR-SYSTEM; DYNAMICAL CLASSIFICATION; ORBITAL STRUCTURE; KOZAI RESONANCE; SCATTERED DISK; PERIOD COMETS; DATA RELEASE AB The trans-Neptunian objects (TNOs) trapped in mean-motion resonances with Neptune were likely emplaced there during planet migration late in the giant-planet formation process. We perform detailed modeling of the resonant objects detected in the Canada-France Ecliptic Plane Survey (CFEPS) in order to provide population estimates and, for some resonances, constrain the complex internal orbital element distribution. Detection biases play a critical role because phase relationships with Neptune make object discovery more likely at certain longitudes. This paper discusses the 3:2, 5:2, 2:1, 3:1, 5:1, 4:3, 5:3, 7:3, 5:4, and 7:4 mean-motion resonances, all of which had CFEPS detections, along with our upper limit on 1:1 Neptune Trojans (which is consistent with their small population estimated elsewhere). For the plutinos (TNOs in the 3:2 resonance) we refine the orbital element distribution given by Kavelaars et al. in 2009 and show that steep H-magnitude distributions (N(H) proportional to 10(alpha H), with alpha = 0.8-0.9) are favored in the range H-g = 8-9, and confirm that this resonance does not share the inclination distribution of the classical Kuiper Belt. We give the first population estimate for the 5:2 resonance and find that, to within the uncertainties, the population is equal to that of the 3:2 (similar or equal to 13,000 TNOs with H-g < 9.16), whereas the 2: 1 population is smaller by a factor of 3-4 compared to the other two resonances. We also measure significant populations inhabiting the 4:3, 5:3, 7:3, 5:4, 7:4, 3:1, and 5:1 resonances, with H-g < 9.16 (D > 100 km) populations in the thousands. We compare our intrinsic population and orbital element distributions with several published models of resonant-TNO production; the most striking discrepancy is that resonances beyond the 2:1 are in reality more heavily populated than in published models. C1 [Gladman, B.; Lawler, S. M.; Van Laerhoven, C.] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada. [Petit, J. -M.; Rousselot, P.] Observ Besancon, CNRS UMR 6213, Inst UTINAM, F-25010 Besancon, France. [Kavelaars, J.] Natl Res Council Canada, Herzberg Inst Astrophys, Victoria, BC V9E 2E7, Canada. [Jones, R. L.] Univ Washington, Dept Astron, Seattle, WA 98195 USA. [Parker, J. Wm.; Bieryla, A.] SW Res Inst, Boulder, CO 80302 USA. [Nicholson, P.] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA. [Bieryla, A.; Ashby, M. L. N.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Gladman, B (reprint author), Univ British Columbia, Dept Phys & Astron, 6224 Agr Rd, Vancouver, BC V6T 1Z1, Canada. FU National Sciences and Engineering Research Council; Canadian Foundation for Innovation FX We acknowledge the research support of the National Sciences and Engineering Research Council and the Canadian Foundation for Innovation. We thank the queued service observing operations team at CFHT for their excellence in obtaining the CFEPS observations. J. Hahn and H. Levison provided output from their cosmogonic models, thus allowing the quantitative comparisons between models and observation that are the future of Kuiper Belt studies. Lastly, we acknowledge the historical debt this subject owes to Brian Marsden, and honor his dedication to orbital computation. NR 54 TC 30 Z9 30 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-6256 J9 ASTRON J JI Astron. J. PD JUL PY 2012 VL 144 IS 1 AR 23 DI 10.1088/0004-6256/144/1/23 PG 24 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 960VB UT WOS:000305418600023 ER PT J AU Greiss, S Steeghs, D Gansicke, BT Martin, EL Groot, PJ Irwin, MJ Gonzalez-Solares, E Greimel, R Knigge, C Ostensen, RH Verbeek, K Drew, JE Drake, J Jonker, PG Ripepi, V Scaringi, S Southworth, J Still, M Wright, NJ Farnhill, H van Haaften, LM Shah, S AF Greiss, S. Steeghs, D. Gaensicke, B. T. Martin, E. L. Groot, P. J. Irwin, M. J. Gonzalez-Solares, E. Greimel, R. Knigge, C. Ostensen, R. H. Verbeek, K. Drew, J. E. Drake, J. Jonker, P. G. Ripepi, V. Scaringi, S. Southworth, J. Still, M. Wright, N. J. Farnhill, H. van Haaften, L. M. Shah, S. TI INITIAL DATA RELEASE OF THE KEPLER-INT SURVEY SO ASTRONOMICAL JOURNAL LA English DT Article DE catalogs; stars: emission-line, Be; stars: general; surveys; techniques: photometric ID NORTHERN GALACTIC PLANE; H-ALPHA SURVEY; DIGITAL SKY SURVEY; CATACLYSMIC VARIABLES; ECLIPSING BINARIES; COMPACT PULSATORS; MISSION FIELD; V344 LYRAE; 1ST; IPHAS AB This paper describes the first data release of the Kepler-INT Survey (KIS) that covers a 116 deg(2) region of the Cygnus and Lyra constellations. The Kepler field is the target of the most intensive search for transiting planets to date. Despite the fact that the Kepler mission provides superior time-series photometry, with an enormous impact on all areas of stellar variability, its field lacks optical photometry complete to the confusion limit of the Kepler instrument necessary for selecting various classes of targets. For this reason, we follow the observing strategy and data reduction method used in the IPHAS and UVEX galactic plane surveys in order to produce a deep optical survey of the Kepler field. This initial release concerns data taken between 2011 May and August, using the Isaac Newton Telescope on the island of La Palma. Four broadband filters were used, U, g, r, i, as well as one narrowband one, H alpha, reaching down to a 10 sigma limit of similar to 20th mag in the Vega system. Observations covering similar to 50 deg(2), thus about half of the field, passed our quality control thresholds and constitute this first data release. We derive a global photometric calibration by placing the KIS magnitudes as close as possible to the Kepler Input Catalog (KIC) photometry. The initial data release catalog containing around 6 million sources from all the good photometric fields is available for download from the KIS Web site (www.astro.warwick.ac.uk/research/kis/) as well as via MAST (KIS magnitudes can be retrieved using the MAST enhanced target search page http://archive.stsci.edu/kepler/kepler_fov/search.php and also via Casjobs at MAST Web site http://mastweb.stsci.edu/kplrcasjobs/). C1 [Greiss, S.; Steeghs, D.; Gaensicke, B. T.] Univ Warwick, Dept Phys, Astron & Astrophys Grp, Coventry CV4 7AL, W Midlands, England. [Martin, E. L.] INTA CSIC Ctr Astrobiol, Torrejon De Ardoz, Spain. [Groot, P. J.; Verbeek, K.; Jonker, P. G.; Scaringi, S.; van Haaften, L. M.; Shah, S.] Radboud Univ Nijmegen, Dept Astrophys IMAPP, NL-6500 GL Nijmegen, Netherlands. [Irwin, M. J.; Gonzalez-Solares, E.] Univ Cambridge, Inst Astron, Cambridge Astron Survey Unit, Cambridge CB3 0HA, England. [Greimel, R.] Karl Franzens Univ Graz, Inst Phys, A-8010 Graz, Austria. [Knigge, C.] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England. [Ostensen, R. H.] Katholieke Univ Leuven, Inst Sterrenkunde, B-3001 Louvain, Belgium. [Drew, J. E.; Farnhill, H.] Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England. [Drake, J.; Jonker, P. G.; Wright, N. J.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Jonker, P. G.] SRON Netherlands Inst Space Res, SRON, NL-3584 CA Utrecht, Netherlands. [Ripepi, V.] Osserv Astron Capodimonte, INAF, I-80131 Naples, Italy. [Southworth, J.] Keele Univ, Astrophys Grp, Newcastle Under Lyme ST5 5BG, England. [Still, M.] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA. [Still, M.] Bay Area Environm Res Inst Inc, Sonoma, CA 95476 USA. RP Greiss, S (reprint author), Univ Warwick, Dept Phys, Astron & Astrophys Grp, Coventry CV4 7AL, W Midlands, England. EM s.greiss@warwick.ac.uk RI Gaensicke, Boris/A-9421-2012; Steeghs, Danny/C-5468-2009; Groot, Paul/K-4391-2016; OI Gaensicke, Boris/0000-0002-2761-3005; Steeghs, Danny/0000-0003-0771-4746; Groot, Paul/0000-0002-4488-726X; Scaringi, Simone/0000-0001-5387-7189; Drew, Janet/0000-0003-1192-7082 FU STFC; European Research Council under the European Community [227224]; Research Council of K. U. Leuven [GOA/2008/04] FX D. Steeghs acknowledges an STFC Advanced Fellowship.; R. H. Ostensen acknowledges funding from the European Research Council under the European Community's Seventh Framework Programme (FP7/2007-2013)/ERC grant agreement No. 227224 (prosperity), as well as from the Research Council of K. U. Leuven grant agreement GOA/2008/04. NR 43 TC 36 Z9 36 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-6256 J9 ASTRON J JI Astron. J. PD JUL PY 2012 VL 144 IS 1 AR 24 DI 10.1088/0004-6256/144/1/24 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 960VB UT WOS:000305418600024 ER PT J AU Kenyon, SJ Bromley, BC AF Kenyon, Scott J. Bromley, Benjamin C. TI COAGULATION CALCULATIONS OF ICY PLANET FORMATION AT 15-150 AU: A CORRELATION BETWEEN THE MAXIMUM RADIUS AND THE SLOPE OF THE SIZE DISTRIBUTION FOR TRANS-NEPTUNIAN OBJECTS (vol 143, pg 63, 2012) SO ASTRONOMICAL JOURNAL LA English DT Correction DE errata, addenda ID KUIPER-BELT; LUMINOSITY FUNCTION AB We correct errors in our comparisons of model results with observations and fix typographical errors in mathematical expressions for the accretion time. Reanalyzing the observations leads to new values for the target slope of the cumulative size distribution for large objects as a function of the slope of the power-law relation between albedo and radius. Despite these changes, the analysis still strongly prefers models where trans-Neptunian objects grow from an initial population of small (1-10 km) planetesimals. C1 [Kenyon, Scott J.] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. [Bromley, Benjamin C.] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA. RP Kenyon, SJ (reprint author), Smithsonian Astrophys Observ, 60 Garden St, Cambridge, MA 02138 USA. EM skenyon@cfa.harvard.edu; bromley@physics.utah.edu OI Kenyon, Scott/0000-0003-0214-609X NR 10 TC 1 Z9 1 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-6256 J9 ASTRON J JI Astron. J. PD JUL PY 2012 VL 144 IS 1 AR 29 DI 10.1088/0004-6256/144/1/29 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 960VB UT WOS:000305418600029 ER PT J AU Welch, AJ Fleischer, RC James, HF Wiley, AE Ostrom, PH Adams, J Duvall, F Holmes, N Hu, D Penniman, J Swindle, KA AF Welch, A. J. Fleischer, R. C. James, H. F. Wiley, A. E. Ostrom, P. H. Adams, J. Duvall, F. Holmes, N. Hu, D. Penniman, J. Swindle, K. A. TI Population divergence and gene flow in an endangered and highly mobile seabird SO HEREDITY LA English DT Article DE Cytochrome b; intron; microsatellite; population; Hawaiian petrel; Pterodroma sandwichensis ID MULTILOCUS GENOTYPE DATA; DARK-RUMPED PETRELS; DIFFERENTIATION MEASURE; INTRODUCED PREDATORS; NEWELLS SHEARWATERS; WANDERING ALBATROSS; DISPERSAL PATTERNS; SOFTWARE PACKAGE; COMPUTER-PROGRAM; HAWAIIAN PETREL AB Seabirds are highly vagile and can disperse up to thousands of kilometers, making it difficult to identify the factors that promote isolation between populations. The endemic Hawaiian petrel (Pterodroma sandwichensis) is one such species. Today it is endangered, and known to breed only on the islands of Hawaii, Maui, Lanai and Kauai. Historical records indicate that a large population formerly bred on Molokai as well, but this population has recently been extirpated. Given the great dispersal potential of these petrels, it remains unclear if populations are genetically distinct and which factors may contribute to isolation between them. We sampled petrels from across their range, including individuals from the presumably extirpated Molokai population. We sequenced 524 bp of mitochondrial DNA, 741 bp from three nuclear introns, and genotyped 18 microsatellite loci in order to examine the patterns of divergence in this species and to investigate the potential underlying mechanisms. Both mitochondrial and nuclear data sets indicated significant genetic differentiation among all modern populations, but no differentiation was found between historic samples from Molokai and modern birds from Lanai. Population-specific nonbreeding distribution and strong natal philopatry may reduce gene flow between populations. However, the lack of population structure between extirpated Molokai birds and modern birds on Lanai indicates that there was substantial gene flow between these populations and that petrels may be able to overcome barriers to dispersal prior to complete extirpation. Hawaiian petrel populations could be considered distinct management units, however, the dwindling population on Hawaii may require translocation to prevent extirpation in the near future. Heredity (2012) 109, 19-28; doi:10.1038/hdy.2012.7; published online 21 March 2012 C1 [Welch, A. J.; Fleischer, R. C.] Smithsonian Conservat Biol Inst, Ctr Conservat & Evolutionary Genet, Washington, DC USA. [Welch, A. J.; Fleischer, R. C.] Univ Maryland, Behav Ecol Evolut & Systemat Program, College Pk, MD 20742 USA. [James, H. F.; Wiley, A. E.] Smithsonian Inst, Natl Museum Nat Hist, Dept Vertebrate Zool, Washington, DC 20560 USA. [Wiley, A. E.; Ostrom, P. H.] Michigan State Univ, Dept Zool, E Lansing, MI USA. [Adams, J.] US Geol Survey, Western Ecol Res Ctr, Pacific Coastal & Marine Sci Ctr, Santa Cruz, CA USA. [Duvall, F.] Dept Land & Nat Resources, Wailuku, HI USA. [Holmes, N.] Kauai Endangered Seabird Recovery Project, Waimea, HI USA. [Hu, D.] Natl Pk Serv, Pacific W Reg Off, Honolulu, HI USA. [Penniman, J.] Univ Hawaii, Pacific Cooperat Studies Unit, Honolulu, HI 96822 USA. [Swindle, K. A.] US Fish & Wildlife Serv, Off Law Enforcement, Honolulu, HI USA. RP Welch, AJ (reprint author), SUNY Buffalo, Dept Biol Sci, 109 Cooke Hall, Buffalo, NY 14260 USA. EM andreann@buffalo.edu FU Behavior, Ecology and Evolution Program at the University of Maryland; Smithsonian Office of Fellowships; Smithsonian's Walcott Fund; Center for Conservation and Evolutionary Genetics; National Science Foundation [DEB-0745604] FX We thank David Anderson, David Duffy, David Ainley and Seth Judge for access to samples and/or valuable discussion on petrel biology. We thank Hawaii Volcanoes National Park for providing permission to sample salvaged petrel carcasses. For the permission and assistance in sampling museum specimens, we thank James Dean, Megan Spitzer and Christina Gebhard of the Bird Division at the Smithsonian Institution's National Museum of Natural History; Carla Kishinami and Lydia Garetano at the Bernice P Bishop Museum; and Kimball Garrett at the Los Angeles County Museum of Natural History. We thank Amy Wilson, Frank Hailer and Brandt Ryder for discussion on data analysis; Peter Pyle, Hannah Nevins and three anonymous reviewers for comments on earlier drafts, as well as Heather Lerner, Nancy Rotzel, Emily Latch and other members of the Center for Conservation and Evolutionary Genetics at the Smithsonian Institution's National Zoological Park. Funding for this study was provided by the Behavior, Ecology and Evolution Program at the University of Maryland, the Smithsonian Office of Fellowships, the Smithsonian's Walcott Fund, the Center for Conservation and Evolutionary Genetics and the National Science Foundation (grant # DEB-0745604 to P Ostrom, R Fleischer and H James). Procedures for handling live birds were approved by the Western Ecological Research Center Animal Care and Use Committee (protocol 9370BQ9TSK1102) and the Smithsonian National Museum of Natural History Animal Care and Use Committee (protocol 200903). Samples were collected under the Endangered Species Act permit TE-145562 and the cooperative agreement between the Hawaii Department of Land and Natural Resources and the US Fish and Wildlife Service. The use of trade names in this study is for descriptive purposes only and does not imply endorsement by the US Government. NR 91 TC 17 Z9 17 U1 3 U2 48 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0018-067X J9 HEREDITY JI Heredity PD JUL PY 2012 VL 109 IS 1 BP 19 EP 28 DI 10.1038/hdy.2012.7 PG 10 WC Ecology; Evolutionary Biology; Genetics & Heredity SC Environmental Sciences & Ecology; Evolutionary Biology; Genetics & Heredity GA 960CX UT WOS:000305366700004 PM 22434012 ER PT J AU Pekar, S Smerda, J Hruskova, M Sedo, O Muster, C Cardoso, P Zdrahal, Z Korenko, S Bures, P Liznarova, E Sentenska, L AF Pekar, S. Smerda, J. Hruskova, M. Sedo, O. Muster, C. Cardoso, P. Zdrahal, Z. Korenko, S. Bures, P. Liznarova, E. Sentenska, L. TI Prey-race drives differentiation of biotypes in ant-eating spiders SO JOURNAL OF ANIMAL ECOLOGY LA English DT Article DE ecological speciation; phylogeography; prey capture trade-offs; specialized predator; venom composition ID SYMPATRIC SPECIATION; ARANEAE ZODARIIDAE; ADAPTIVE RADIATION; MITOCHONDRIAL-DNA; VENOM EVOLUTION; GENE FLOW; DIVERSITY; INSECTS; CAPTURE; DIET AB 1. Disruptive natural selection resulting from specialization on different hosts is recognized as one of the most important driving forces in the diversification of herbivores and parasites. It has been proposed that a similar mechanism could apply to carnivorous predators too, although the evidence is still lacking. 2. Here, we show that the differentiation of biotypes of specialized ant-eating spiders of the genus Zodarion has probably been induced by prey-shifting. We focused on two forms of one species Z. styliferum from the Iberian Peninsula that presumably represent ecological races. We conducted geographic, ecological, venom-oriented, reproductive and genetic divergence analysis among multiple populations collected at a number of sites across Portugal and Madeira. 3. Geographic analysis revealed that the two forms occur in mosaic sympatry. Each form was found to associate in nature with a different ant species in a different habitat. Specifically, the styliferum form hunted predominantly Messor ants, and the extraneum form hunted mainly Camponotus ants. Laboratory experiments revealed that the two forms exhibit a significant preference for attacking focal ants, demonstrating higher paralysis efficiency, and also show different venom composition. Cross-mating of the two forms was significantly less likely than between pairs of the same form, suggesting moderate assortative mating. Phylogenetic analyses indicate low genetic differentiation of the two forms and parallel-repeated evolution of biotypes. 4. Adaptive prey-shifting correlated with habitat preference are at present the most valid explanations for biotype formation in Zodarion. The speciation of ant-eating Zodarion spiders thus appears to follow a scenario similar to that of host-shifting in parasites and herbivores. C1 [Pekar, S.; Smerda, J.; Hruskova, M.; Korenko, S.; Bures, P.; Liznarova, E.; Sentenska, L.] Masaryk Univ, Fac Sci, Dept Bot & Zool, CS-61137 Brno, Czech Republic. [Sedo, O.; Zdrahal, Z.] Masaryk Univ, Prote Core Facil, Mendel Ctr Plant Genom & Prote, Cent European Technol Inst, Brno 62500, Czech Republic. [Muster, C.] Ernst Moritz Arndt Univ Greifswald, Zool Inst & Museum, Greifswald, Germany. [Cardoso, P.] Univ Azores, Azorean Biodivers Grp CITA A, P-9700042 Angra Do Heroismo, Portugal. [Cardoso, P.] Natl Museum Nat Hist, Smithsonian Inst, Washington, DC 20560 USA. RP Pekar, S (reprint author), Masaryk Univ, Fac Sci, Dept Bot & Zool, Kotlarska 2, CS-61137 Brno, Czech Republic. EM pekar@sci.muni.cz RI Sedo, Ondrej/D-9868-2012; Zdrahal, Zbynek/D-9491-2012; Cardoso, Pedro/A-8820-2008; OI Cardoso, Pedro/0000-0001-8119-9960; Pekar, Stano/0000-0002-0197-5040 FU Ministry of Education, Youth and Sports of the Czech Republic [0021622416, 0021622415, LC06034]; Portuguese Foundation for Science and Technology [SFRH/BPD/40688/2007] FX We would like to thank P. Werner for helping with the identification of ants and staff at the Parque Natural do Vale do Guadiana in Mertola, C. Meierrose for logistical support and two anonymous reviewers for useful comments. The study was supported by grants no. 0021622416, 0021622415 and LC06034 from the Ministry of Education, Youth and Sports of the Czech Republic. PC is supported by the Portuguese Foundation for Science and Technology (SFRH/BPD/40688/2007). NR 74 TC 9 Z9 9 U1 0 U2 44 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0021-8790 EI 1365-2656 J9 J ANIM ECOL JI J. Anim. Ecol. PD JUL PY 2012 VL 81 IS 4 BP 838 EP 848 DI 10.1111/j.1365-2656.2012.01957.x PG 11 WC Ecology; Zoology SC Environmental Sciences & Ecology; Zoology GA 959SS UT WOS:000305333900012 PM 22313500 ER PT J AU Knope, ML Morden, CW Funk, VA Fukami, T AF Knope, Matthew L. Morden, Clifford W. Funk, Vicki A. Fukami, Tadashi TI Area and the rapid radiation of Hawaiian Bidens (Asteraceae) SO JOURNAL OF BIOGEOGRAPHY LA English DT Article DE Adaptive radiation; Asteraceae; carrying capacity; Compositae; diversification rate; endemism; extinction; island evolution; islands; speciation ID SILVERSWORD ALLIANCE COMPOSITAE; ADAPTIVE RADIATION; DIVERGENCE TIMES; DIVERSIFICATION; BIOGEOGRAPHY; PHYLOGENY; EVOLUTION; SEQUENCES; CLADES; TREES AB Aim To estimate the rate of adaptive radiation of endemic Hawaiian Bidens and to compare their diversification rates with those of other plants in Hawaii and elsewhere with rapid rates of radiation. Location Hawaii. Methods Fifty-nine samples representing all 19 Hawaiian species, six Hawaiian subspecies, two Hawaiian hybrids and an additional two Central American and two African Bidens species had their DNA extracted, amplified by polymerase chain reaction and sequenced for four chloroplast and two nuclear loci, resulting in a total of approximately 5400 base pairs per individual. Internal transcribed spacer sequences for additional outgroup taxa, including 13 non-Hawaiian Bidens, were obtained from GenBank. Phylogenetic relationships were assessed by maximum likelihood and Bayesian inference. The age of the most recent common ancestor and diversification rates of Hawaiian Bidens were estimated using the methods of previously published studies to allow for direct comparison with other studies. Calculations were made on a per-unit-area basis. Results We estimate the age of the Hawaiian clade to be 1.33.1 million years old, with an estimated diversification rate of 0.32.3 species/million years and 4.8 x 10(-5) to 1.3 x 10(-4) species Myr-1 km-2. Bidens species are found in Europe, Africa, Asia and North and South America, but the Hawaiian species have greater diversity of growth form, floral morphology, dispersal mode and habitat type than observed in the rest of the genus world-wide. Despite this diversity, we found little genetic differentiation among the Hawaiian species. This is similar to the results from other molecular studies on Hawaiian plant taxa, including others with great morphological variability (e.g. silverswords, lobeliads and mints). Main conclusions On a per-unit-area basis, Hawaiian Bidens have among the highest rates of speciation for plant radiations documented to date. The rapid diversification within such a small area was probably facilitated by the habitat diversity of the Hawaiian Islands and the adaptive loss of dispersal potential. Our findings point to the need to consider the spatial context of diversification specifically, the relative scale of habitable area, environmental heterogeneity and dispersal ability to understand the rate and extent of adaptive radiation. C1 [Knope, Matthew L.; Fukami, Tadashi] Stanford Univ, Dept Biol, Stanford, CA 94305 USA. [Morden, Clifford W.] Univ Hawaii Manoa, Dept Bot, Honolulu, HI 96822 USA. [Morden, Clifford W.] Univ Hawaii Manoa, PCSU, Honolulu, HI 96822 USA. [Funk, Vicki A.] Smithsonian Inst, Dept Bot, Washington, DC 20013 USA. RP Knope, ML (reprint author), Stanford Univ, Dept Biol, 371 Serra Mall, Stanford, CA 94305 USA. EM knope@stanford.edu RI Fukami, Tadashi/A-2934-2010 OI Fukami, Tadashi/0000-0001-5654-4785 FU University of Hawaii Ecology, Evolution, and Conservation Biology Research Grant Award [DGEO2-32016]; Department of Zoology, University of Hawaii, Manoa; Department of Biology, Stanford University FX We thank Dan Crawford (University of Kansas), Fred Ganders (UBC), Gabriel Johnson (Smithsonian), Karen Shigematsu and Alvin Yoshinaga (Lyon Arboretum), Ken Wood and Mike DeMotta (Allerton NTBG) and Kawika Winters (Limahuli NTBG) for DNA or tissue donation; Dave Carlon, Ken Hayes, Shaobin Hou and Gabriel Johnson for assistance with DNA sequencing; Yi 'Apollo' Qi for assistance with ARCGIS; Gerry Carr and Pasha Feinberg for image preparation; Pat Aldrich, Stephanie Dunbar-Co, Shama Hinard, Jeffrey Knope, Tatiana Kutynina, Kathy McMillen, Kurtis McMillen, Colin Olito, Hank Oppenheimer and Maggie Sporck for assistance in the field; and Melinda Belisle, Rodolfo Dirzo, Elizabeth Hadly, Shama Hinard, Olivia Isaac, Sterling Keeley, Jeffrey Knope, Jonathan Payne, Cindy Sayre, Peter Vitousek, Ward Watt, Belinda Wheeler and Robert J. Whittaker for comments. Funding was provided in part by a University of Hawaii Ecology, Evolution, and Conservation Biology Research Grant Award to M. L. K. (National Science Foundation GK12 Fellowship grant no. DGEO2-32016 to K. Y. Kaneshiro) and support from the Department of Zoology, University of Hawaii, Manoa and the Department of Biology, Stanford University. NR 74 TC 32 Z9 33 U1 6 U2 57 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0305-0270 J9 J BIOGEOGR JI J. Biogeogr. PD JUL PY 2012 VL 39 IS 7 BP 1206 EP 1216 DI 10.1111/j.1365-2699.2012.02687.x PG 11 WC Ecology; Geography, Physical SC Environmental Sciences & Ecology; Physical Geography GA 961GP UT WOS:000305452500002 ER PT J AU Tyuterev, VG Perrin, AM Rothman, LS AF Tyuterev, Vladimir G. Perrin, Agnes M. Rothman, Laurence S. TI Special issue honoring three great contributors and mentors in high-resolution molecular spectroscopy: Jean-Marie Flaud, Claude Camy-Peyret, and Alain Barbe Preface SO JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER LA English DT Editorial Material C1 [Rothman, Laurence S.] Harvard Smithsonian Ctr Astrophys, Atom & Mol Phys Div, Cambridge, MA 02138 USA. [Tyuterev, Vladimir G.] Univ Reims, Fac Sci Exactes & Nat, Grp Spectrometrie Mol & Atmospher, F-51687 Reims, France. [Perrin, Agnes M.] Univ Paris Est Creteil, F-94010 Creteil, France. [Perrin, Agnes M.] Univ Paris Diderot, CNRS, Lab Interuniv Syst Atmospher, F-94010 Creteil, France. RP Rothman, LS (reprint author), Harvard Smithsonian Ctr Astrophys, Atom & Mol Phys Div, 60 Garden St, Cambridge, MA 02138 USA. EM LRothman@CfA.Harvard.edu NR 0 TC 1 Z9 1 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0022-4073 J9 J QUANT SPECTROSC RA JI J. Quant. Spectrosc. Radiat. Transf. PD JUL PY 2012 VL 113 IS 11 SI SI BP 821 EP 824 DI 10.1016/j.jqsrt.2012.03.004 PG 4 WC Optics; Spectroscopy SC Optics; Spectroscopy GA 959YX UT WOS:000305355200001 ER PT J AU Richard, C Gordon, IE Rothman, LS Abel, M Frommhold, L Gustafsson, M Hartmann, JM Hermans, C Lafferty, WJ Orton, GS Smith, KM Tran, H AF Richard, C. Gordon, I. E. Rothman, L. S. Abel, M. Frommhold, L. Gustafsson, M. Hartmann, J. -M. Hermans, C. Lafferty, W. J. Orton, G. S. Smith, K. M. Tran, H. TI New section of the HITRAN database: Collision-induced absorption (CIA) SO JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER LA English DT Article DE Collision-induced absorption; HITRAN; Atmospheric absorption; Interacting molecular pairs ID COOL WHITE-DWARFS; MOLECULAR SPECTROSCOPIC DATABASE; INFRARED-ABSORPTION; MODEL ATMOSPHERES; TITANS ATMOSPHERE; EARTHS ATMOSPHERE; LOW-TEMPERATURES; BROWN DWARFS; 1ST STARS; A-BAND AB This paper describes the addition of Collision-Induced Absorption (CIA) into the HITRAN compilation. The data from different experimental and theoretical sources have been cast into a consistent format and formalism. The implementation of these new spectral data into the HITRAN database is invaluable for modeling and interpreting spectra of telluric and other planetary atmospheres as well as stellar atmospheres. In this implementation for HITRAN, CIAs of N-2, H-2, O-2, CO2, and CH4 due to various collisionally interacting atoms or molecules are presented. Some CIA spectra are given over an extended range of frequencies, including several H-2 overtone bands that are dipole-forbidden in the non-interacting molecules. Temperatures from tens to thousands of Kelvin are considered, as required, for example, in astrophysical analyses of objects, including cool white dwarfs, brown dwarfs. M dwarfs, cool main sequence stars, solar and extra-solar planets, and the formation of so-called first stars. (C) 2011 Elsevier Ltd. All rights reserved. C1 [Richard, C.; Gordon, I. E.; Rothman, L. S.] Harvard Smithsonian Ctr Astrophys, Atom & Mol Phys Div, Cambridge, MA 02138 USA. [Abel, M.; Frommhold, L.] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA. [Gustafsson, M.] Univ Gothenburg, Dept Chem, SE-41296 Gothenburg, Sweden. [Hartmann, J. -M.; Tran, H.] Univ Paris Diderot, Inst Pierre Simon Laplace, Univ Paris Est Creteil, CNRS,UMR 7583, F-94010 Creteil, France. [Hermans, C.] Belgian Inst Space Aeron, B-1180 Brussels, Belgium. [Lafferty, W. J.] NIST, Opt Technol Div, Gaithersburg, MD 20899 USA. [Orton, G. S.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Smith, K. M.] RAL Space, Rutherford Appleton Lab, Didcot, Oxon, England. RP Rothman, LS (reprint author), Harvard Smithsonian Ctr Astrophys, Atom & Mol Phys Div, 60 Garden St, Cambridge, MA 02138 USA. EM lrothman@cfa.harvard.edu RI Gustafsson, Magnus/A-1661-2010; Tran, Ha/I-5076-2013; OI Gustafsson, Magnus/0000-0002-7629-0169; Gordon, Iouli/0000-0003-4763-2841; Rothman, Laurence/0000-0002-3837-4847 FU NASA through the Planetary Atmospheres grant [NNX10AB94G]; Earth Observing System (EOS) [NAG5-13534] FX This effort has been supported by NASA through the Planetary Atmospheres grant NNX10AB94G and the Earth Observing System (EOS) under grant NAG5-13534. NR 58 TC 44 Z9 44 U1 2 U2 36 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0022-4073 EI 1879-1352 J9 J QUANT SPECTROSC RA JI J. Quant. Spectrosc. Radiat. Transf. PD JUL PY 2012 VL 113 IS 11 SI SI BP 1276 EP 1285 DI 10.1016/j.jqsrt.2011.11.004 PG 10 WC Optics; Spectroscopy SC Optics; Spectroscopy GA 959YX UT WOS:000305355200041 ER PT J AU Pruss, SB Clemente, H Laflamme, M AF Pruss, Sara B. Clemente, Hannah Laflamme, Marc TI Early (Series 2) Cambrian archaeocyathan reefs of southern Labrador as a locus for skeletal carbonate production SO LETHAIA LA English DT Article DE Archaeocyatha; bioherms; carbonates; calcification; point count analysis ID UNITED-STATES CALIFORNIA; PROTEROZOIC NAMA GROUP; RANGE PROVINCE; METAZOAN REEFS; EXTINCTION; NAMIBIA; CANADA; LAURENTIA; HISTORY; FOSSILS AB Pruss, S.B., Clemente, H. & Laflamme, M. 2012: Early (Series 2) Cambrian archaeocyathan reefs of southern Labrador as a locus for skeletal carbonate production. Lethaia, Vol. 45, pp. 401410. Archaeocyathan reefs, the first reefs produced by animals, are prominent, global features of early Cambrian successions. However, microbialites the dominant reef components of the Proterozoic were still abundant in most archaeocyathan reefs. Although such reefs were a locus for carbonate production, it is unclear how much carbonate was produced skeletally. This analysis of well-known early Cambrian archaeocyathan patch reefs of the Forteau Formation, southern Labrador, demonstrates that skeletal carbonate was abundantly produced in these archaeocyathan reefs, although only about half was produced by archaeocyathans. Trilobites, echinoderms and brachiopods contributed substantially to the total carbonate budget, particularly in grainstone facies flanking the reefs. Through point count analysis of samples collected from the reef core and flanking grainstones, it can be demonstrated that skeletal material was most abundant in grainstone facies, where animals such as trilobites and echinoderms contributed significantly to carbonate production. In contrast, microbial fabrics were more abundant than skeletal fabrics in the reef core, although archaeocyathan material was more abundant than other skeletal debris. Similar to modern reefs, these reefs created a variety of habitats that allowed for the proliferation of skeletal organisms living on and around the reef, thereby promoting skeletal carbonate production through ecosystem engineering. ?Archaeocyatha, bioherms, carbonates, calcification, point count analysis C1 [Pruss, Sara B.; Clemente, Hannah] Smith Coll, Dept Geosci, Northampton, MA 01063 USA. [Laflamme, Marc] Smithsonian Inst, Dept Paleobiol, Washington, DC 20560 USA. RP Pruss, SB (reprint author), Smith Coll, Dept Geosci, Northampton, MA 01063 USA. EM spruss@smith.edu; hannah.cle@gmail.com; laflammem@si.edu FU National Science and Engineering Council of Canada; Bateman; Smithsonian Postdoctoral Fellowships FX We acknowledge the Smith College Department of Geosciences Marshall Schalk Fund, Smith College International Studies Experience Grants, Smith College Student Aid Society (to HC), Alexandra Breus for thin section preparation, Tony Caldanaro for machinery training, Mike Vollinger for printing, and Katie Castagno for field assistance. We also thank S. Finnegan, A. Knoll and A. Bush for helpful discussion. ML acknowledges the generous funding provided by the National Science and Engineering Council of Canada, Bateman, and Smithsonian Postdoctoral Fellowships. NR 42 TC 5 Z9 5 U1 1 U2 14 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0024-1164 J9 LETHAIA JI Lethaia PD JUL PY 2012 VL 45 IS 3 BP 401 EP 410 DI 10.1111/j.1502-3931.2011.00299.x PG 10 WC Paleontology SC Paleontology GA 960MH UT WOS:000305392100008 ER PT J AU Mei, ZX Udo, Z Lin, J AF Mei ZhiXing Udo, Ziegler Lin Jun TI Numerical experiments of disturbance to the solar atmosphere caused by eruptions SO SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY LA English DT Article DE sun: coronal mass ejections; sun: flares; sun: magnetic fields; plasmas: MHD waves; plasma: shock waves ID CORONAL MASS EJECTIONS; ULTRAVIOLET IMAGING TELESCOPE; X-RAY OBSERVATIONS; II RADIO-BURSTS; EIT WAVES; MORETON WAVE; MAGNETIC RECONNECTION; CATASTROPHE MODEL; TRANSPORT SCHEME; FLARE WAVES AB Despite extensive research on various global waves in solar eruptions, debate continues on the intrinsic nature of them. In this work, we performed numerical experiments of the coronal mass ejection with emphases on the associated large-scale MHD waves. A fast-mode shock forms in front of the flux rope during the eruption with a dimming region following it, and the development of a three-component structure of the ejecta is observed. At the flank of the flux rope, the slow-mode shock and the velocity vortices are also invoked. The dependence of the eruption energetics on the strength of the background field and the coronal plasma density distribution is apparent: the stronger the background field is, and/or the lower the coronal plasma density is, the more energetic the eruption is. In the lower Alfv,n speed environment, the slow mode shock and the large scale velocity vortices may be the source of the EIT wave. In the high Alfv,n speed environment, on the other hand, the echo due to the reflection of the fast shock on the bottom boundary could be so strong that its interaction with the slow mode shock and the velocity vortices produces the second echo propagating downward and causing the secondary disturbance to the boundary surface. We suggest that this second echo, together with the slow shock and the velocity vortices, could constitute a possible candidate of the source for the EIT wave. C1 [Mei ZhiXing; Lin Jun] Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China. [Mei ZhiXing] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China. [Udo, Ziegler] Leibniz Inst Astrophys Potsdam, D-14482 Potsdam, Germany. [Lin Jun] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Mei, ZX (reprint author), Chinese Acad Sci, Yunnan Astron Observ, POB 110, Kunming 650011, Peoples R China. EM meizhixing@ynao.ac.cn FU National Basic Research Program of China [2011CB811403]; National Natural Science Foundation of China [10873030]; Chinese Academy of Sciences [2009J2-34]; CMA [GYHY201106011]; NASA [NNX11AB61G]; Smithsonian Institution Sprague Endowment Fund FX We are grateful to FORBES T G, RAYMOND J C, SHEN C and DAI S for valuable discussions. This work was supported by the National Basic Research Program of China (Grant No. 2011CB811403), the National Natural Science Foundation of China (Grant No. 10873030), the Chinese Academy of Sciences (Grant No. 2009J2-34), the CMA (Grant No. GYHY201106011), NASA (Grant No. NNX11AB61G) and the Smithsonian Institution Sprague Endowment Fund during FY10. The NIRVANA v3.4 code used in this work was developed by UDO Ziegler at the Leibniz-Institut fur Astrophysik Potsdam. Calculations in this work were completed with the help of the HPC Center, Kunming Institute of Botany, Chinese Academy of Sciences. NR 66 TC 7 Z9 8 U1 0 U2 3 PU SCIENCE PRESS PI BEIJING PA 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA SN 1674-7348 EI 1869-1927 J9 SCI CHINA PHYS MECH JI Sci. China-Phys. Mech. Astron. PD JUL PY 2012 VL 55 IS 7 SI SI BP 1316 EP 1329 DI 10.1007/s11433-012-4752-3 PG 14 WC Physics, Multidisciplinary SC Physics GA 960VI UT WOS:000305419500028 ER PT J AU Konstantinidis, P Johnson, GD AF Konstantinidis, Peter Johnson, G. David TI Ontogeny of the jaw apparatus and suspensorium of the Tetraodontiformes SO ACTA ZOOLOGICA LA English DT Article DE development; comparative anatomy; ethmopalatine articulation; Tetraodontiformes ID FEEDING MECHANISM; PUFFERFISH INFLATION; OCEAN SUNFISHES; ACTINOPTERYGIAN FISHES; FUNCTIONAL-MORPHOLOGY; QUEEN TRIGGERFISH; CHECKERED PUFFER; BALISTES-VETULA; AXIAL SKELETON; LEIS CONUNDRUM AB Konstantinidis, P. and Johnson, G. David 2012. Ontogeny of the jaw apparatus and suspensorium of the Tetraodontiformes. Acta Zoologica (Stockholm) 93: 351366. The jaw apparatus and suspensorium of adult Tetraodontiformes are well adapted to a durophagous feeding habit. Anatomical indicators are the short, stout jaws and a suspensorium in which the quadrate lies in the same vertical plane as the autopalatine. In contrast, the palatoquadrate of larval Tetraodontiformes generally resembles that of larval percomorphs a more posteriorly positioned quadrate and a slender and long Meckelian cartilage. Among Tetraodontiformes, the Triacanthodidae retain a protrusible upper jaw and a versatile suspensorium. The jaws of the Balistoidei have greater mobility achieved by a reduced autopalatine that has lost its bony contact with the suspensorium. In contrast to the Balistoidei, the beak-like jaws of the Tetraodontoidei lack individual teeth in the biting part of the jaws. The autopalatine is enlarged, which results in immobilization of the ethmopalatine articulation. The Ostraciidae are exceptional in having the distal part of the autopalatine reduced, while the proximal part remains attached to the suspensorium. C1 [Konstantinidis, Peter] Nat Hist Museum, Dept Zool, London SW7 5BD, England. [Johnson, G. David] Natl Museum Nat Hist, Smithsonian Inst, Div Fishes, Dept Zool, Washington, DC 20013 USA. RP Konstantinidis, P (reprint author), Nat Hist Museum, Dept Zool, Cromwell Rd, London SW7 5BD, England. EM peter.konstantinidis@uni-jena.de FU Department of Zoology of the Natural History Museum, London FX For their constructive comments, we are grateful to Timo Moritz and Eric Hilton. We thank Sebastien Lavoue, Matt Harris, James Maclaine, Oliver Crimmen, Lukas Ruber, and Kai Winkelmann. We also thank James Tyler for sharing his knowledge with us. For the supply of larval and adult material, the authors are indebted to Karsten Hartel from the MCZ, Keiichi Matsuura from the NSMT, Mark McGrouther and Jeff Leis from the AMS, and Mark Sabaj from the ANSP. We are thankful to Ralf Britz, NHM, who initiated the project and helped to obtain necessary stages of Monotrete suvattii. PK also thank Prof Wolfgang Maier from the University of Tuebingen and Prof Phil Rainbow from the Natural History Museum in London. The project is part of a Ph.D. thesis, which is funded by the Department of Zoology of the Natural History Museum, London. NR 79 TC 4 Z9 4 U1 3 U2 30 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0001-7272 J9 ACTA ZOOL-STOCKHOLM JI Acta Zool. PD JUL PY 2012 VL 93 IS 3 BP 351 EP 366 DI 10.1111/j.1463-6395.2011.00509.x PG 16 WC Anatomy & Morphology; Zoology SC Anatomy & Morphology; Zoology GA 958ZP UT WOS:000305279800008 ER PT J AU Mi, XC Swenson, NG Valencia, R Kress, WJ Erickson, DL Perez, AJ Ren, HB Su, SH Gunatilleke, N Gunatilleke, S Hao, ZQ Ye, WH Cao, M Suresh, HS Dattaraja, HS Sukumar, R Ma, KP AF Mi, Xiangcheng Swenson, Nathan G. Valencia, Renato Kress, W. John Erickson, David L. Perez, Alvaro J. Ren, Haibao Su, Sheng-Hsin Gunatilleke, Nimal Gunatilleke, Savi Hao, Zhanqing Ye, Wanhui Cao, Min Suresh, H. S. Dattaraja, H. S. Sukumar, R. Ma, Keping TI The Contribution of Rare Species to Community Phylogenetic Diversity across a Global Network of Forest Plots SO AMERICAN NATURALIST LA English DT Article DE rare species; community phylogenetic diversity; species abundance distribution; phylogenetic relatedness; niche differentiation; community assembly ID ECOLOGICAL COMMUNITIES; TAXONOMIC DISTINCTNESS; EVOLUTIONARY HISTORY; RELATIVE ABUNDANCE; NICHE CONSERVATISM; BIODIVERSITY; PATTERNS; TREE; PRODUCTIVITY; RELATEDNESS AB Niche differentiation has been proposed as an explanation for rarity in species assemblages. To test this hypothesis requires quantifying the ecological similarity of species. This similarity can potentially be estimated by using phylogenetic relatedness. In this study, we predicted that if niche differentiation does explain the co-occurrence of rare and common species, then rare species should contribute greatly to the overall community phylogenetic diversity (PD), abundance will have phylogenetic signal, and common and rare species will be phylogenetically dissimilar. We tested these predictions by developing a novel method that integrates species rank abundance distributions with phylogenetic trees and trend analyses, to examine the relative contribution of individual species to the overall community PD. We then supplement this approach with analyses of phylogenetic signal in abundances and measures of phylogenetic similarity within and between rare and common species groups. We applied this analytical approach to 15 long-term temperate and tropical forest dynamics plots from around the world. We show that the niche differentiation hypothesis is supported in six of the nine gap-dominated forests but is rejected in the six disturbance-dominated and three gap-dominated forests. We also show that the three metrics utilized in this study each provide unique but corroborating information regarding the phylogenetic distribution of rarity in communities. C1 [Mi, Xiangcheng; Ren, Haibao; Ma, Keping] Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China. [Swenson, Nathan G.] Michigan State Univ, Dept Plant Biol, E Lansing, MI 48824 USA. [Valencia, Renato; Perez, Alvaro J.] Pontificia Univ Catolica Ecuador, Escuela Ciencias Biol, Lab Ecol Plantas, Quito, Ecuador. [Kress, W. John; Erickson, David L.] Smithsonian Inst, Natl Museum Nat Hist, Dept Bot, Washington, DC 20013 USA. [Su, Sheng-Hsin] Taiwan Forestry Res Inst, Taipei 10066, Taiwan. [Gunatilleke, Nimal; Gunatilleke, Savi] Univ Peradeniya, Fac Sci, Dept Bot, Peradeniya 20400, Sri Lanka. [Hao, Zhanqing] Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China. [Ye, Wanhui] Chinese Acad Sci, S China Bot Garden, Guangzhou 510650, Guangdong, Peoples R China. [Cao, Min] Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Kunming 650223, Peoples R China. [Suresh, H. S.; Dattaraja, H. S.; Sukumar, R.] Indian Inst Sci, Ctr Ecol Sci, Bangalore 560012, Karnataka, India. RP Ma, KP (reprint author), Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, 20 Nanxincun, Beijing 100093, Peoples R China. EM kpma@ibcas.ac.cn RI Raman, Sukumar/C-9809-2013; Swenson, Nathan/A-3514-2012 OI Swenson, Nathan/0000-0003-3819-9767 FU C.A.S. [KSCX2-EW-Z-5]; Natural Science Foundation of China [31061160188, 31011120470]; National Science Foundation; Andrew W. Mellon Foundation; Peninsula Community Foundation; Smithsonian Institution; Smithsonian Tropical Research Institute; Arnold Arboretum (Harvard University); Indian Institute of Science; Forest Research Institute of Malaysia; Royal Thai Forest Department, the National Institute of Environmental Studies (Japan); Taiwan Forestry Research Institute and Forestry Bureau; SENESCYT (Secretaria Nacional de Educacion Superior, Ciencia, Tecnologia e Innovacion); PUCE (Pontificia Universidad Catolica de Ecuador); Donaciones del Impuesto a la Renta (Ecuador); John D. and Catherine T. MacArthur Foundation FX The data analyses reported in this study were supported by the Key Innovation Project of C.A.S. (KSCX2-EW-Z-5) and the Natural Science Foundation of China projects (31061160188 and 31011120470). We are grateful to C. Cannon, L. Comita, R. Condit, M. Helmus, F. Slik, H. Su, and two reviewers for their insightful comments and suggestions on the earlier form of the manuscript. Data collection was funded by many organizations, principally, the National Science Foundation; the Andrew W. Mellon Foundation; the Peninsula Community Foundation; the Smithsonian Institution; the Smithsonian Tropical Research Institute; the Arnold Arboretum (Harvard University); the Indian Institute of Science; the Forest Research Institute of Malaysia; the Royal Thai Forest Department, the National Institute of Environmental Studies (Japan); the Taiwan Forestry Research Institute and Forestry Bureau; SENESCYT (Secretaria Nacional de Educacion Superior, Ciencia, Tecnologia e Innovacion), PUCE (Pontificia Universidad Catolica de Ecuador), and Donaciones del Impuesto a la Renta (Ecuador); and the John D. and Catherine T. MacArthur Foundation. We thank the hundreds of field-workers who measured and mapped the trees analyzed in this study. NR 55 TC 22 Z9 25 U1 9 U2 89 PU UNIV CHICAGO PRESS PI CHICAGO PA 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA SN 0003-0147 J9 AM NAT JI Am. Nat. PD JUL PY 2012 VL 180 IS 1 BP E17 EP E30 DI 10.1086/665999 PG 14 WC Ecology; Evolutionary Biology SC Environmental Sciences & Ecology; Evolutionary Biology GA 956JU UT WOS:000305086700002 PM 22673660 ER PT J AU Bartel, N Bietenholz, MF Lebach, DE Lederman, JI Petrov, L Ransom, RR Ratner, MI Shapiro, II AF Bartel, N. Bietenholz, M. F. Lebach, D. E. Lederman, J. I. Petrov, L. Ransom, R. R. Ratner, M. I. Shapiro, I. I. TI VLBI FOR GRAVITY PROBE B. III. A LIMIT ON THE PROPER MOTION OF THE "CORE" OF THE QUASAR 3C 454.3 SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE binaries: close; radio continuum: stars; stars: activity; stars: imaging; stars: individual (IM Pegasi); techniques: interferometric ID CELESTIAL REFERENCE FRAME; HIGH-PRECISION ASTROMETRY; BASE-LINE ARRAY; RADIO INTERFEROMETRY; KINEMATICS; OUTBURST; POSITION; DISTANCE; OPACITY; GEODESY AB We made very long baseline interferometry observations at 8.4 GHz between 1997 and 2005 to estimate the coordinates of the "core" component of the superluminal quasar, 3C 454.3, the ultimate reference point in the distant universe for the NASA/Stanford Gyroscope Relativity Mission, Gravity Probe B (GP-B). These coordinates are determined relative to those of the brightness peaks of two other compact extragalactic sources, B2250+194 and B2252+172, nearby on the sky, and within a celestial reference frame (CRF), defined by a large suite of compact extragalactic radio sources, and nearly identical to the International Celestial Reference Frame 2 (ICRF2). We find that B2250+194 and B2252+172 are stationary relative to each other, and also in the CRF, to within 1s upper limits of 15 and 30 mu as yr(-1) in a and d, respectively. The core of 3C 454.3 appears to jitter in its position along the jet direction over similar to 0.2 mas, likely due to activity close to the putative supermassive black hole nearby, but on average is stationary in the CRF within 1s upper limits on its proper motion of 39 mu as yr(-1) (1.0c) and 30 mu as yr(-1) (0.8c) in a and d, respectively, for the period 2002-2005. Our corresponding limit over the longer interval, 1998-2005, of more importance to GP-B, is 46 and 56 mu as yr(-1) in a and d, respectively. Some of 3C 454.3's jet components show significantly superluminal motion with speeds of up to similar to 200 mu as yr-1 or 5c in the CRF. The core of 3C 454.3 thus provides for GP-B a sufficiently stable reference in the distant universe. C1 [Bartel, N.; Bietenholz, M. F.; Ransom, R. R.] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada. [Lebach, D. E.; Ratner, M. I.; Shapiro, I. I.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Lederman, J. I.] York Univ, Ctr Res Earth & Space Sci, Toronto, ON M3J 1P3, Canada. [Petrov, L.] Astrogeo Ctr, Falls Church, VA 22043 USA. [Bietenholz, M. F.] Hartebeesthoek Radio Astron Observ, ZA-1740 Krugersdorp, South Africa. [Ransom, R. R.] Natl Res Council Canada, Herzberg Inst Astrophys, Dominion Radio Astrophys Observ, Penticton, BC V2A 6K3, Canada. RP Bartel, N (reprint author), York Univ, Dept Phys & Astron, 4700 Keele St, Toronto, ON M3J 1P3, Canada. FU NASA; Stanford University; SAO FX This research was primarily supported by NASA, through a contract with Stanford University to SAO, and a subcontract from SAO to York University. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. The DSN is operated by JPL/Caltech, under contract with NASA. This research has made use of the United States Naval Observatory (USNO) Radio Reference Frame Image Database (RRFID). We have made use of NASA's Astrophysics Data System Abstract Service, developed and maintained at SAO. Jeff Cadieux and Julie Tome helped with the data reduction during their tenure as students at York University. We thank the International VLBI Service for Geodesy and Astrometry (IVS; Schluter & Behrend 2007) for their support. NR 44 TC 9 Z9 9 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD JUL PY 2012 VL 201 IS 1 AR 3 DI 10.1088/0067-0049/201/1/3 PG 20 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 956JZ UT WOS:000305087200003 ER PT J AU Bietenholz, MF Bartel, N Lebach, DE Ransom, RR Ratner, MI Shapiro, II AF Bietenholz, M. F. Bartel, N. Lebach, D. E. Ransom, R. R. Ratner, M. I. Shapiro, I. I. TI VLBI FOR GRAVITY PROBE B. VII. THE EVOLUTION OF THE RADIO STRUCTURE OF IM PEGASI SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE binaries: close; radio continuum: stars; stars: activity; stars: imaging; stars: individual (IM Pegasi); techniques: interferometric ID RS-CANUM-VENATICORUM; UX ARIETIS; GUIDE STAR; BINARY-SYSTEMS; FLUX-DENSITY; II PEGASI; EMISSION; ALGOL; MISSION; CVN AB We present measurements of the total radio flux density as well as very long baseline interferometry images of the star, IM Pegasi, which was used as the guide star for the NASA/ Stanford relativity mission Gravity Probe B. We obtained flux densities and images from 35 sessions of observations at 8.4 GHz (lambda=3.6 cm) between 1997 January and 2005 July. The observations were accurately phase-referenced to several extragalactic reference sources, and we present the images in a star-centered frame, aligned by the position of the star as derived from our fits to its orbital motion, parallax, and proper motion. Both the flux density and the morphology of IM Peg are variable. For most sessions, the emission region has a single-peaked structure, but 25% of the time, we observed a two-peaked (and on one occasion perhaps a three-peaked) structure. On average, the emission region is elongated by 1.4 +/- 0.4 mas (FWHM), with the average direction of elongation being close to that of the sky projection of the orbit normal. The average length of the emission region is approximately equal to the diameter of the primary star. No significant correlation with the orbital phase is found for either the flux density or the direction of elongation, and no preference for any particular longitude on the star is shown by the emission region. C1 [Bietenholz, M. F.; Bartel, N.; Ransom, R. R.] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada. [Lebach, D. E.; Ratner, M. I.; Shapiro, I. I.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Bietenholz, M. F.] Hartebeesthoek Radio Astron Observ, ZA-1740 Krugersdorp, South Africa. [Ransom, R. R.] Natl Res Council Canada, Herzberg Inst Astrophys, Dominion Radio Astrophys Observ, Penticton, BC V2A 6K3, Canada. RP Bietenholz, MF (reprint author), York Univ, Dept Phys & Astron, 4700 Keele St, Toronto, ON M3J 1P3, Canada. FU NASA; Stanford University; SAO FX This research was primarily supported by NASA, through a contract with Stanford University to SAO and a subcontract from SAO to York University. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. The DSN is operated by JPL/Caltech, under contract with NASA. This research has made use of the United States Naval Observatory (USNO) Radio Reference Frame Image Database (RRFID). We have also made use of NASA's Astrophysics Data System Abstract Service, developed and maintained at SAO. Jeff Cadieux and Julie Tome helped with the data reduction during their tenure as students at York University. Finally, we thank the anonymous referee for useful comments. NR 51 TC 6 Z9 6 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD JUL PY 2012 VL 201 IS 1 AR 7 DI 10.1088/0067-0049/201/1/7 PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 956JZ UT WOS:000305087200007 ER PT J AU Lebach, DE Bartel, N Bietenholz, MF Campbell, RM Gordon, D Lederman, JI Lestrade, JF Ransom, RR Ratner, MI Shapiro, II AF Lebach, D. E. Bartel, N. Bietenholz, M. F. Campbell, R. M. Gordon, D. Lederman, J. I. Lestrade, J. -F. Ransom, R. R. Ratner, M. I. Shapiro, I. I. TI VLBI FOR GRAVITY PROBE B. IV. A NEW ASTROMETRIC ANALYSIS TECHNIQUE AND A COMPARISON WITH RESULTS FROM OTHER TECHNIQUES SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE astrometry; binaries: close; radio continuum: stars; stars: activity; stars: imaging; stars: individual (IM Pegasi); techniques: interferometric ID BASE-LINE INTERFEROMETRY; RADIO-SOURCES; MAPPING FUNCTIONS; POSITION; GEODESY; EPHEMERIDES AB When very long baseline interferometry (VLBI) observations are used to determine the position or motion of a radio source relative to reference sources nearby on the sky, the astrometric information is usually obtained via (1) phase-referenced maps or (2) parametric model fits to measured fringe phases or multiband delays. In this paper, we describe a "merged" analysis technique which combines some of the most important advantages of these other two approaches. In particular, our merged technique combines the superior model-correction capabilities of parametric model fits with the ability of phase-referenced maps to yield astrometric measurements of sources that are too weak to be used in parametric model fits. We compare the results from this merged technique with the results from phase-referenced maps and from parametric model fits in the analysis of astrometric VLBI observations of the radio-bright star IM Pegasi (HR 8703) and the radio source B2252+ 172 nearby on the sky. In these studies we use central-core components of radio sources 3C 454.3 and B2250+ 194 as our positional references. We obtain astrometric results for IMPeg with our merged technique even when the source is too weak to be used in parametric model fits, and we find that our merged technique yields astrometric results superior to the phase-referenced mapping technique. We used our merged technique to estimate the proper motion and other astrometric parameters of IM Peg in support of the NASA/Stanford Gravity Probe B mission. C1 [Lebach, D. E.; Ratner, M. I.; Shapiro, I. I.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Bartel, N.; Bietenholz, M. F.; Lederman, J. I.; Ransom, R. R.] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada. [Campbell, R. M.] Joint Inst VLBI Europe, NL-7991 PD Dwingeloo, Netherlands. [Gordon, D.] NASA, NVI Inc, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Lestrade, J. -F.] CNRS, Observ Paris, F-75014 Paris, France. [Bietenholz, M. F.] Hartebeesthoek Radio Astron Observ, ZA-1740 Krugersdorp, South Africa. [Ransom, R. R.] Natl Res Council Canada, Herzberg Inst Astrophys, Dominion Radio Astrophys Observ, Penticton, BC V2A 6K3, Canada. RP Lebach, DE (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. FU NASA [NAS8-39225]; Stanford University [PR 6750]; Smithsonian Institution; York University FX We thank N. Nunes for developing the graphical software package we used to phase-connect our VLBI data. We thank the VLBI group of NASA's Goddard Space Flight Center, and L. Petrov in particular, for providing technical support and information. We are also grateful to the many people involved in our campaign of VLBI observations who went above and beyond the call of duty, including S. Dains, C. Garcia Miro, E. Moll, and L. Cameron. We thank C. Jacobs and O. Sovers for information about the coordinates of the three 70 m NASA DSN antennas used in our observations, and R. C. Walker for information about the VLA coordinates. We thank J. L. Davis and S. S. Shapiro for their information and insight on the use of our Kalman-filter estimator (SOLVK). Finally, we thank R. C. Walker, K. Desai, and E. Greisen for their support in our use of AIPS. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. This research made use ofNASA'sAstrophysicsData System, whichwas conceived, developed, and continues to be operated by the Smithsonian Astrophysical Observatory at the Harvard-Smithsonian Center for Astrophysics. Our work was supported by NASA prime award NAS8-39225, Stanford University subaward PR 6750, the Smithsonian Institution, and York University. NR 46 TC 5 Z9 5 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD JUL PY 2012 VL 201 IS 1 AR 4 DI 10.1088/0067-0049/201/1/4 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 956JZ UT WOS:000305087200004 ER PT J AU Ransom, RR Bartel, N Bietenholz, MF Lebach, DE Lestrade, JF Ratner, MI Shapiro, II AF Ransom, R. R. Bartel, N. Bietenholz, M. F. Lebach, D. E. Lestrade, J. -F. Ratner, M. I. Shapiro, I. I. TI VLBI FOR GRAVITY PROBE B. VI. THE ORBIT OF IM PEGASI AND THE LOCATION OF THE SOURCE OF RADIO EMISSION SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE binaries: close; radio continuum: stars; stars: activity; stars: imaging; stars: individual (IM Pegasi); techniques: interferometric ID RS-CANUM-VENATICORUM; CLOSE BINARY STARS; GUIDE STAR; SYSTEMS; MISSION; ALGOL; POSITION; ASTROMETRY AB We present a physical interpretation for the locations of the sources of radio emission in IM Pegasi (IM Peg, HR 8703), the guide star for the NASA/ Stanford relativity mission Gravity Probe B. This emission is seen in each of our 35 epochs of 8.4 GHz very long baseline interferometry observations taken from 1997 to 2005. We found that the mean position of the radio emission is at or near the projected center of the primary to within about 27% of its radius, identifying this active star as the radio emitter. The positions of the radio brightness peaks are scattered across the disk of the primary and slightly beyond, preferentially along an axis with position angle, P. A.=-38 degrees +/- 8 degrees, which is closely aligned with the sky projections of the orbit normal (P. A. = -49 degrees.5 +/- 8 degrees.6) and the expected spin axis of the primary. Comparison with simulations suggests that brightness peaks are 3.6+ 0.4-0.7 times more likely to occur (per unit surface area) near the pole regions of the primary (latitude, |lambda| >= 70 degrees) than near the equator (|lambda| <= 20 degrees.), and to also occur close to the surface with similar to 2/3 of them at altitudes not higher than 25% of the radius of the primary. C1 [Ransom, R. R.; Bartel, N.; Bietenholz, M. F.] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada. [Lebach, D. E.; Ratner, M. I.; Shapiro, I. I.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Lestrade, J. -F.] Observ Paris, LERMA, F-75014 Paris, France. [Ransom, R. R.] Natl Res Council Canada, Herzberg Inst Astrophys, Dominion Radio Astrophys Observ, Penticton, BC V2A 6K3, Canada. [Bietenholz, M. F.] Hartebeesthoek Radio Astron Observ, ZA-1740 Krugersdorp, South Africa. RP Ransom, RR (reprint author), Okanagan Coll, 583 Duncan Ave W, Penticton, BC V2A 2K8, Canada. FU NASA; Stanford University; SAO FX We thank the anonymous referee for a constructive review of the paper and for comments helpful in the preparation of the final manuscript. This research was primarily supported by NASA, through a contract with Stanford University to SAO, and a subcontract from SAO to York University. The VLBA is an instrument of the National Radio Astronomy Observatory (NRAO), a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. The DSN is operated by JPL/Caltech, under contract with NASA. We have made use of NASA's Astrophysics Data System Abstract Service, developed and maintained at SAO. Jeff Cadieux and Julie Tome assisted with the reduction of the VLBI data during their tenures as students at York University. NR 39 TC 6 Z9 6 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD JUL PY 2012 VL 201 IS 1 AR 6 DI 10.1088/0067-0049/201/1/6 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 956JZ UT WOS:000305087200006 ER PT J AU Ransom, RR Bartel, N Bietenholz, MF Lebach, DE Lederman, JI Luca, P Ratner, MI Shapiro, II AF Ransom, R. R. Bartel, N. Bietenholz, M. F. Lebach, D. E. Lederman, J. I. Luca, P. Ratner, M. I. Shapiro, I. I. TI VLBI FOR GRAVITY PROBE B. II. MONITORING OF THE STRUCTURE OF THE REFERENCE SOURCES 3C 454.3, B2250+194, AND B2252+172 SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE galaxies: active; galaxies: individual (B2252+172); galaxies: jets; quasars: individual (3C 454.3, B2250+194); radio continuum: galaxies; techniques: interferometric ID ACTIVE GALACTIC NUCLEI; CELESTIAL REFERENCE FRAME; BASE-LINE INTERFEROMETRY; RADIO-SOURCES; OPTICAL-IDENTIFICATION; QUASARS; SPECTRUM; ASTROMETRY; EMISSION; POSITION AB We used 8.4 GHz very long baseline interferometry images obtained at up to 35 epochs between 1997 and 2005 to examine the radio structures of the main reference source, 3C 454.3, and two secondary reference sources, B2250+ 194 and B2252+ 172, for the guide star for the NASA/Stanford relativity mission Gravity Probe B ( GP-B). For one epoch in 2004 May, we also obtained images at 5.0 and 15.4 GHz. The 35 8.4 GHz images for quasar 3C 454.3 confirm a complex, evolving, core-jet structure. We identified at each epoch a component, C1, near the easternmost edge of the core region. Simulations of the core region showed that C1 is located, on average, 0.18 +/- 0.06 mas west of the unresolved "core" identified in 43 GHz images. We also identified in 3C 454.3 at 8.4 GHz several additional components that moved away from C1 with proper motions ranging in magnitude between 0.9 c and 5 c. The detailed motions of the components exhibit two distinct bends in the jet axis located similar to 3 and similar to 5.5 mas west of C1. The spectra between 5.0 and 15.4 GHz for the "moving" components are steeper than those for C1. The 8.4 GHz images of B2250+ 194 and B2252+ 172, in contrast to those of 3C 454.3, reveal compact structures. The spectrum between 5.0 and 15.4 GHz for B2250+ 194 is inverted while that for B2252+ 172 is flat. Based on its position near the easternmost edge of the 8.4 GHz radio structure, close spatial association with the 43 GHz core, and relatively flat spectrum, we believe 3C 454.3 component C1 to be the best choice for the ultimate reference point for the GP-B guide star. The compact structures and inverted-to-flat spectra of B2250+ 194 and B2252+ 172 make these objects valuable secondary reference sources. C1 [Ransom, R. R.; Bartel, N.; Bietenholz, M. F.; Luca, P.] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada. [Lebach, D. E.; Ratner, M. I.; Shapiro, I. I.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Lederman, J. I.] York Univ, Ctr Res Earth & Space Sci, Toronto, ON M3J 1P3, Canada. [Ransom, R. R.] Natl Res Council Canada, Herzberg Inst Astrophys, Dominion Radio Astrophys Observ, Penticton, BC V2A 6K3, Canada. [Bietenholz, M. F.] Hartebeesthoek Radio Astron Observ, ZA-1740 Krugersdorp, South Africa. RP Ransom, RR (reprint author), Okanagan Coll, 583 Duncan Ave W, Penticton, BC V2A 2K8, Canada. NR 44 TC 7 Z9 7 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD JUL PY 2012 VL 201 IS 1 AR 2 DI 10.1088/0067-0049/201/1/2 PG 29 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 956JZ UT WOS:000305087200002 ER PT J AU Ratner, MI Bartel, N Bietenholz, MF Lebach, DE Lestrade, JF Ransom, RR Shapiro, II AF Ratner, M. I. Bartel, N. Bietenholz, M. F. Lebach, D. E. Lestrade, J. -F. Ransom, R. R. Shapiro, I. I. TI VLBI FOR GRAVITY PROBE B. V. PROPER MOTION AND PARALLAX OF THE GUIDE STAR, IM PEGASI SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE astrometry; binaries: close; gravitation; radio continuum: stars; stars: activity; stars: individual (IM Pegasi) ID BINARY; RADIO; HIPPARCOS AB We present the principal astrometric results of the very long baseline interferometry (VLBI) program undertaken in support of the Gravity Probe B (GP-B) relativity mission. VLBI observations of the GP-B guide star, the RS CVn binary IM Pegasi (HR 8703), yielded positions at 35 epochs between 1997 and 2005. We discuss the statistical assumptions behind these results and our methods for estimating the systematic errors. We find the proper motion of IM Peg in an extragalactic reference frame closely related to the International Celestial Reference Frame 2 (ICRF2) to be -20.83 +/- 0.03 +/- 0.09 mas yr(-1) in right ascension and -27.27 +/- 0.03 +/- 0.09 mas yr-1 in declination. For each component, the first uncertainty is the statistical standard error and the second is the total standard error (SE) including plausible systematic errors. We also obtain a parallax of 10.37 +/- 0.07 mas (distance: 96.4 +/- 0.7 pc), for which there is no evidence of any significant contribution of systematic error. Our parameter estimates for the similar to 25 day period orbital motion of the stellar radio emission have SEs corresponding to similar to 0.10 mas on the sky in each coordinate. The total SE of our estimate of IM Peg's proper motion is similar to 30% smaller than the accuracy goal set by the GP-B project before launch: 0.14 mas yr(-1) for each coordinate of IM Peg's proper motion. Our results ensure that the uncertainty in IM Peg's proper motion makes only a very small contribution to the uncertainty of the GP-B relativity tests. C1 [Ratner, M. I.; Lebach, D. E.; Shapiro, I. I.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Bartel, N.; Bietenholz, M. F.; Ransom, R. R.] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada. [Lestrade, J. -F.] CNRS, Observ Paris, F-75014 Paris, France. [Bietenholz, M. F.] Hartebeesthoek Radio Astron Observ, ZA-1740 Krugersdorp, South Africa. Natl Res Council Canada, Herzberg Inst Astrophys, Dominion Radio Astrophys Observ, Penticton, BC V2A 6K3, Canada. RP Ratner, MI (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. FU NASA; Stanford University to the Smithsonian Astrophysical Observatory (SAO); Swiss Federal Institute of Technology Zurich (ETH-Z); Tennessee State University; University of Pittsburgh; U.S. Naval Observatory FX This research was primarily supported by NASA, through a contract from Stanford University to the Smithsonian Astrophysical Observatory (SAO), as well as a major subcontract from SAO to York University, and lesser subcontracts from SAO to the Swiss Federal Institute of Technology Zurich (ETH-Z), Tennessee State University, the University of Pittsburgh, and the U.S. Naval Observatory. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. The DSN is operated by JPL/Caltech, under contract with NASA. We have made use of NASA's Astrophysics Data System Abstract Service, initiated, developed, and maintained at SAO. NR 26 TC 9 Z9 9 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD JUL PY 2012 VL 201 IS 1 AR 5 DI 10.1088/0067-0049/201/1/5 PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 956JZ UT WOS:000305087200005 ER PT J AU Shapiro, II Bartel, N Bietenholz, MF Lebach, DE Lestrade, JF Ransom, RR Ratner, MI AF Shapiro, I. I. Bartel, N. Bietenholz, M. F. Lebach, D. E. Lestrade, J. -F. Ransom, R. R. Ratner, M. I. TI VLBI FOR GRAVITY PROBE B. I. OVERVIEW SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE astrometry; binaries: close; gravitation; radio continuum: galaxies; radio continuum: stars; stars: activity; stars: individual (IM Pegasi); techniques: interferometric ID BINARY IM-PEGASI; RADIO INTERFEROMETRY; ASTROMETRY; POSITION; STARS; MISSION; CATALOG AB We describe the NASA/Stanford gyroscope relativity mission, Gravity Probe B (GP-B), and provide an overview of the following series of six astrometric and astrophysical papers that report on our radio observations and analyses made in support of this mission. The main goal of this 8.5 year program of differential very long baseline interferometry astrometry was to determine the proper motion of the guide star of the GP-B mission, the RS CVn binary IM Pegasi (IM Peg; HR 8703). This proper motion is determined with respect to compact, extragalactic reference sources. The results are -20.833 +/- 0.090 mas yr(-1) and -27.267 +/- 0.095 mas yr(-1) for, respectively, the right ascension and declination, in local Cartesian coordinates, of IM Peg's proper motion, and 10.370 +/- 0.074 mas (i. e., 96.43 +/- 0.69 pc) for its parallax (and distance). Each quoted uncertainty is meant to represent an similar to 70% confidence interval that includes the estimated contribution from systematic error. These results are accurate enough not to discernibly degrade the GP-B estimates of its gyroscopes' relativistic precessions: the frame-dragging and geodetic effects. C1 [Shapiro, I. I.; Lebach, D. E.; Ratner, M. I.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Bartel, N.; Bietenholz, M. F.; Ransom, R. R.] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada. [Lestrade, J. -F.] CNRS, Observ Paris, F-75014 Paris, France. [Bietenholz, M. F.] Hartebeesthoek Radio Astron Observ, ZA-1740 Krugersdorp, South Africa. [Ransom, R. R.] Natl Res Council Canada, Herzberg Inst Astrophys, Dominion Radio Astrophys Observ, Penticton, BC V2A 6K3, Canada. RP Shapiro, II (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. NR 28 TC 10 Z9 10 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD JUL PY 2012 VL 201 IS 1 AR 1 DI 10.1088/0067-0049/201/1/1 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 956JZ UT WOS:000305087200001 ER PT J AU Eberhard, WG Hesselberg, T AF Eberhard, William G. Hesselberg, Thomas TI Cues that Spiders (Araneae: Araneidae, Tetragnathidae) Use to Build Orbs: Lapses in Attention to One Set of Cues because of Dissonance with Others? SO ETHOLOGY LA English DT Article ID WEB-CONSTRUCTION; WEAVING SPIDERS; REGENERATED LEGS; CONSEQUENCES; ORIENTATION; PATTERNS; BEHAVIOR; GEOMETRY; GRAVITY; DESIGN AB Even for small animals such as spiders, behavioral decisions are sometimes influenced by multiple cues. Orb webs constitute exquisitely precise records of the stimuli the spider experienced and the decisions that it made while building its web. In addition, because spiders appear to sense their webs largely by touch, direct behavioral observations can determine which stimuli they probably sense. Previous studies have shown that when an orb-weaving spider decides how far apart to space successive sticky lines during orb construction, it responds to at least five different kinds of stimuli, all of which apparently use a cue from the web, the location of the previous, inner loop of sticky spiral (IL location), as a point of reference. Here we show that two additional cues from the web, which are related to the position of the temporary spiral (TS), also influence sticky spiral spacing. A combination of direct observations of spider movements, analyses of complete and partially complete webs, and responses to experimental modifications of the web of two species in different families, Micrathena duodecimspinosa (Araneidae) and Leucauge mariana (Tetragnathidae), indicate that both the TS-IL distance itself and the short-term memory of the change in TS-IL distance compared with that on other recently encountered radii correlate with sticky spiral spacing. When the TS-IL distance was large, the spiders apparently ceased to attend to other cues. Thus, even the relatively stereotyped behavior of orb construction includes variation that stems from attention-like mental processes. C1 [Eberhard, William G.] Univ Costa Rica, Escuela Biol, San Pedro, Costa Rica. [Hesselberg, Thomas] Univ Oxford, Dept Zool, Oxford OX1 3PS, England. RP Eberhard, WG (reprint author), Smithsonian Trop Res Inst, Apartado 0843-03092, Balboa, Ancon, Panama. EM william.eberhard@gmail.com FU Smithsonian Tropical Research Institute; Universidad de Costa Rica FX We thank David Zed for help with statistics and two anonymous reviewers for their useful comments on an earlier version of this manuscript. We also thank the Smithsonian Tropical Research Institute and the Universidad de Costa Rica for financial support. NR 37 TC 11 Z9 11 U1 1 U2 26 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0179-1613 J9 ETHOLOGY JI Ethology PD JUL PY 2012 VL 118 IS 7 BP 610 EP 620 DI 10.1111/j.1439-0310.2012.02048.x PG 11 WC Psychology, Biological; Behavioral Sciences; Zoology SC Psychology; Behavioral Sciences; Zoology GA 956XR UT WOS:000305123400002 ER PT J AU Li, Y Lin, J AF Li, Y. Lin, J. TI Acceleration of Electrons and Protons in Reconnecting Current Sheets Including Single or Multiple X-points SO SOLAR PHYSICS LA English DT Article DE Solar flares; Magnetic reconnection; Current sheet; Energetic particles ID CORONAL MASS EJECTIONS; PARTICLE-ACCELERATION; MAGNETIC RECONNECTION; SOLAR-FLARES; ENERGY-SPECTRUM; 2-RIBBON FLARES; FIELD; MODEL; SEPARATION; TURBULENCE AB Kinematic characteristics of electrons and protons in the magnetic reconnecting current sheet in the presence of a guide field are investigated. Particle trajectories are calculated for different values of the guide field by a test-particle calculation. The relationship between the final energy and the initial position has also been studied. We found that the addition of a guide field not only allows particles to get more energy and not only results in the separation of electrons and protons, but also causes the reconnecting electric field to selectively accelerate electrons and protons for different initial positions. The energy spectrum eventually obtained is the common power-law spectrum, and as the guide field increases, the index for the spectrum of electrons decreases rapidly. However, for a weak background magnetic field, proton spectra are not very sensitive to the guide field; but for a strong background field, the dependence of the spectrum index is similar to the electron spectrum. Meanwhile, kinematic characteristics of the accelerated particles in the current sheet including multiple X-points and O-points were also investigated. The result indicates that the existence of the multiple X- and O-points helps particles trapped in the accelerating region to gain more energy, and yields the double or multiple power-law feature. C1 [Li, Y.; Lin, J.] Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China. [Li, Y.] Chinese Acad Sci, Grad Univ, Beijing 10049, Peoples R China. [Lin, J.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Li, Y (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China. EM liyan821@ynao.ac.cn RI LIN, JUN/B-9890-2017 FU Program 973 grant [2011CB811403]; NSFC [10873030, 10903027]; Yunnan Science Foundation of China [2009CD120]; NASA [NNX11AB61G]; Smithsonian Institution FX We thank the anonymous referee for constructive comments and suggestions that much improved the original version of the manuscript. This work was supported by Program 973 grant 2011CB811403, NSFC grant 10873030, 10903027, and Yunnan Science Foundation of China grant 2009CD120. J.L. acknowledge support from NASA grant NNX11AB61G to SAO, and from a grant from the Smithsonian Institution Sprague Endowment Fund during FY10. NR 59 TC 14 Z9 14 U1 0 U2 1 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0038-0938 J9 SOL PHYS JI Sol. Phys. PD JUL PY 2012 VL 279 IS 1 BP 91 EP 113 DI 10.1007/s11207-012-9956-1 PG 23 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 957AK UT WOS:000305130700006 ER PT J AU Le Chat, G Issautier, K Meyer-Vernet, N AF Le Chat, G. Issautier, K. Meyer-Vernet, N. TI The Solar Wind Energy Flux SO SOLAR PHYSICS LA English DT Article DE Plasma physics; Solar wind; Energy flux ID CORONAL MASS EJECTIONS; PROTON TEMPERATURE; PLASMA-EXPERIMENT; CYCLE; INVARIANCE; SPACECRAFT; VELOCITY AB The solar-wind energy flux measured near the Ecliptic is known to be independent of the solar-wind speed. Using plasma data from Helios, Ulysses, and Wind covering a large range of latitudes and time, we show that the solar-wind energy flux is independent of the solar-wind speed and latitude within 10 %, and that this quantity varies weakly over the solar cycle. In other words the energy flux appears as a global solar constant. We also show that the very high-speed solar wind (V (SW)> 700 km s(-1)) has the same mean energy flux as the slower wind (V (SW)< 700 km s(-1)), but with a different histogram. We use this result to deduce a relation between the solar-wind speed and density, which formalizes the anti-correlation between these quantities. C1 [Le Chat, G.; Issautier, K.; Meyer-Vernet, N.] Univ Paris Diderot, LESIA, Observ Paris, CNRS,UPMC, F-92195 Meudon, France. [Le Chat, G.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA USA. RP Le Chat, G (reprint author), Univ Paris Diderot, LESIA, Observ Paris, CNRS,UPMC, 5 Pl Jules Janssen, F-92195 Meudon, France. EM gaetan.lechat@obspm.fr NR 29 TC 10 Z9 10 U1 0 U2 0 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0038-0938 EI 1573-093X J9 SOL PHYS JI Sol. Phys. PD JUL PY 2012 VL 279 IS 1 BP 197 EP 205 DI 10.1007/s11207-012-9967-y PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 957AK UT WOS:000305130700011 ER PT J AU Hao, G Boyle, M Zhou, L Duan, Y AF Hao, G. Boyle, M. Zhou, L. Duan, Y. TI Novel autotransporters encoded by the citrus huanglongbing bacterium, 'Candidatus Liberibacter asiaticus' SO PHYTOPATHOLOGY LA English DT Meeting Abstract CT Annual Meeting of the American-Phytopathological-Society (APS) CY AUG 04-08, 2012 CL Providence, RI SP Amer Phytopathol Soc (APS) C1 [Hao, G.; Zhou, L.; Duan, Y.] US Hort Res Lab, Ft Pierce, FL USA. [Boyle, M.] Smithsonian Marine Stn, Ft Pierce, FL USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER PHYTOPATHOLOGICAL SOC PI ST PAUL PA 3340 PILOT KNOB ROAD, ST PAUL, MN 55121 USA SN 0031-949X J9 PHYTOPATHOLOGY JI Phytopathology PD JUL PY 2012 VL 102 IS 7 SU 4 BP 50 EP 50 PG 1 WC Plant Sciences SC Plant Sciences GA 196SX UT WOS:000322797800265 ER PT J AU Quinn, EA Largado, F Power, M Kuzawa, CW AF Quinn, Elizabeth A. Largado, Fe Power, Michael Kuzawa, Christopher W. TI Predictors of breast milk macronutrient composition in filipino mothers SO AMERICAN JOURNAL OF HUMAN BIOLOGY LA English DT Article ID FATTY-ACID-COMPOSITION; RURAL AFRICAN WOMEN; LATER OBESITY RISK; BODY-MASS INDEX; LACTATION PERFORMANCE; CALORIC RESTRICTION; HOLSTEIN HEIFERS; SWEDISH MOTHERS; NOURISHED WOMEN; ENERGY CONTENTS AB Objectives: There is increasing evidence that breastfeeding has long-term effects on offspring biology and health, which has heightened interest in understanding the extent of variation in breast milk composition and its underlying determinants. Here, we report variation in milk macronutrient composition in a well-characterized cohort of young Filipino mothers and test underlying maternal predictors of this variation. Methods: Morning breast milk samples, anthropometrics, dietary recalls, and other interview data were collected in 102 Filipino young breastfeeding mothers (age range 24.625.4 years) living in Cebu City, Philippines. Milk samples were analyzed for protein, fat, sugar, and milk energy density. Regression models were used to test associations between milk macronutrient composition and maternal diet, body composition, breastfeeding duration, and feeding frequency. Results: Consistent with past studies, milk fat and energy increased with duration of breastfeeding; there were no associations between maternal diet or percent body fat and milk composition with the exception of a modest, inverse association between maternal adiposity and milk sugar content. Conclusions: The relative lack of associations between maternal diet or body composition and milk composition at Cebu is consistent with past studies and suggests that milk composition may be buffered against fluctuations in maternal dietary intake or nutritional status. We speculate that the tendency for milk composition to vary between populations faced with different nutritional ecologies, but to show minimal responsiveness to intake during lactation, may enhance the reliability of milk composition as a stable intergenerational cue of typical local environmental quality. Am. J. Hum. Biol. 2012. (C) 2012 Wiley Periodicals, Inc. C1 [Quinn, Elizabeth A.] Washington Univ, Dept Anthropol, St Louis, MO 63130 USA. [Largado, Fe] Univ San Carlos, Off Populat Studies, Cebu, Philippines. [Power, Michael] Smithsonian Conservat Biol Inst, Natl Zool Pk, Washington, DC USA. [Kuzawa, Christopher W.] Northwestern Univ, Dept Anthropol, Evanston, IL 60208 USA. [Kuzawa, Christopher W.] Northwestern Univ, Cells Soc 2, Inst Policy Res, Evanston, IL USA. RP Quinn, EA (reprint author), Washington Univ, Dept Anthropol, St Louis, MO 63130 USA. EM equinn@artsci.wustl.edu OI Power, Michael/0000-0002-6120-3528 FU National Science Foundation [0726231, BCS-0746320] FX Contract grant sponsor: National Science Foundation (Doctoral Dissertation Improvement); Contract grant number: 0726231; Contract grant sponsor: National Science Foundation; Contract grant number: BCS-0746320. NR 84 TC 20 Z9 21 U1 2 U2 15 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1042-0533 J9 AM J HUM BIOL JI Am. J. Hum. Biol. PD JUL-AUG PY 2012 VL 24 IS 4 BP 533 EP 540 DI 10.1002/ajhb.22266 PG 8 WC Anthropology; Biology SC Anthropology; Life Sciences & Biomedicine - Other Topics GA 954ZI UT WOS:000304986300021 PM 22434662 ER PT J AU Hultgren, KM Duffy, JE AF Hultgren, Kristin M. Duffy, J. Emmett TI Phylogenetic community ecology and the role of social dominance in sponge-dwelling shrimp SO ECOLOGY LETTERS LA English DT Article DE Competition; coral reefs; eusociality; habitat filtering; phylogenetic community ecology; snapping shrimp; spatial scale; Synalpheus ID SNAPPING SHRIMPS; ALPHEIDAE SYNALPHEUS; SPATIAL SCALES; TRAIT; ASSEMBLAGES; EUSOCIALITY; EVOLUTION; PATTERNS; FOREST; SIGNAL AB When functional traits are evolutionarily conserved, phylogenetic relatedness can serve as a proxy for ecological similarity to examine whether functional differences among species mediate community assembly. Using phylogenetic- and trait-based analyses, we demonstrate that sponge-dwelling shrimp (Synalpheus) assemblages are structured by size-based habitat filtering, interacting with competitive exclusion mediated by social system. Most shrimp communities were more closely related and/or more similar in size than randomized communities, consistent with habitat filtering facilitated by phylogenetically conserved body size. Those sponges with greater space heterogeneity hosted shrimp communities with greater size diversity, corroborating the importance of size in niche use. However, communities containing eusocial shrimp which cooperatively defend territories were less phylogenetically related and less similar in size, suggesting that eusociality enhances competitive ability and drives competitive exclusion. Our analyses demonstrate that community assembly in this diverse system occurs via traits mediating niche use and differential competitive ability. C1 [Hultgren, Kristin M.] Smithsonian Inst, Natl Museum Nat Hist, Washington, DC 20013 USA. [Duffy, J. Emmett] Virginia Inst Marine Sci, Gloucester Pt, VA 23062 USA. RP Hultgren, KM (reprint author), Smithsonian Inst, Natl Museum Nat Hist, MRC 163,POB 37012, Washington, DC 20013 USA. EM hultgrenk@si.edu NR 46 TC 9 Z9 9 U1 3 U2 40 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1461-023X EI 1461-0248 J9 ECOL LETT JI Ecol. Lett. PD JUL PY 2012 VL 15 IS 7 BP 704 EP 713 DI 10.1111/j.1461-0248.2012.01788.x PG 10 WC Ecology SC Environmental Sciences & Ecology GA 955EN UT WOS:000305000000009 PM 22548770 ER PT J AU White, KP Langley, JA Cahoon, DR Megonigal, JP AF White, K. P. Langley, J. A. Cahoon, D. R. Megonigal, J. P. TI C-3 and C-4 Biomass Allocation Responses to Elevated CO2 and Nitrogen: Contrasting Resource Capture Strategies SO ESTUARIES AND COASTS LA English DT Article DE Biomass; Chesapeake Bay; Productivity; Sea level rise; Tidal marsh; Turnover ID ATMOSPHERIC CO2; CHESAPEAKE BAY; SEA-LEVEL; INCREASES CARBON; GROUND BIOMASS; FINE ROOTS; MARSH; ENRICHMENT; COMPETITION; DYNAMICS AB Plants alter biomass allocation to optimize resource capture. Plant strategy for resource capture may have important implications in intertidal marshes, where soil nitrogen (N) levels and atmospheric carbon dioxide (CO2) are changing. We conducted a factorial manipulation of atmospheric CO2 (ambient and ambient + 340 ppm) and soil N (ambient and ambient + 25 g m(-2) year(-1)) in an intertidal marsh composed of common North Atlantic C-3 and C-4 species. Estimation of C-3 stem turnover was used to adjust aboveground C-3 productivity, and fine root productivity was partitioned into C-3-C-4 functional groups by isotopic analysis. The results suggest that the plants follow resource capture theory. The C-3 species increased aboveground productivity under the added N and elevated CO2 treatment (P < 0.0001), but did not under either added N or elevated CO2 alone. C-3 fine root production decreased with added N (P < 0.0001), but fine roots increased under elevated CO2 (P = 0.0481). The C-4 species increased growth under high N availability both above- and belowground, but that stimulation was diminished under elevated CO2. The results suggest that the marsh vegetation allocates biomass according to resource capture at the individual plant level rather than for optimal ecosystem viability in regards to biomass influence over the processes that maintain soil surface elevation in equilibrium with sea level. C1 [Langley, J. A.; Megonigal, J. P.] Smithsonian Environm Res Ctr, Edgewater, MD 21037 USA. [White, K. P.] Univ Idaho, Dept Forest Ecol & Biogeosci, Moscow, ID 83844 USA. [White, K. P.] Univ Idaho, Dept Stat Sci, Moscow, ID 83844 USA. [Langley, J. A.] Villanova Univ, Dept Biol, Villanova, PA 19085 USA. [Cahoon, D. R.] US Geol Survey, Patuxent Wildlife Res Ctr, Beltsville, MD 20705 USA. RP Megonigal, JP (reprint author), Smithsonian Environm Res Ctr, POB 28,647 Contees Wharf Rd, Edgewater, MD 21037 USA. EM adam.langley@villanova.edu; megonigalp@si.edu FU USGS [06ERAG0011]; US Department of Energy [DE-FG02-97ER62458]; US Department of Energy's Office of Science (BER) through the Coastal Center of the National Institute of Climate Change Research at Tulane University; National Science Foundation [DEB-0950080]; Research Experience for Undergraduates (REU) program; Smithsonian Institution FX We thank J. Duls, J. Keller, M. Sigrist, G. Peresta, B. Drake, E. Sage, A. Martin, D. McKinley, and N. Mudd for the construction and maintenance of the field site at the Smithsonian Climate Change Facility. The field study was supported by the USGS Global Change Research Program (cooperative agreement 06ERAG0011), the US Department of Energy (DE-FG02-97ER62458), US Department of Energy's Office of Science (BER) through the Coastal Center of the National Institute of Climate Change Research at Tulane University, the National Science Foundation's Long-term Research Environmental Biology program (DEB-0950080) and Research Experience for Undergraduates (REU) program, and the Smithsonian Institution. Use of trade, product, or firm names does not imply endorsement by the US Government. We also thank the anonymous reviewers for the comments that greatly improved this paper. NR 42 TC 5 Z9 5 U1 0 U2 35 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1559-2723 J9 ESTUAR COAST JI Estuaries Coasts PD JUL PY 2012 VL 35 IS 4 BP 1028 EP 1035 DI 10.1007/s12237-012-9500-4 PG 8 WC Environmental Sciences; Marine & Freshwater Biology SC Environmental Sciences & Ecology; Marine & Freshwater Biology GA 951CF UT WOS:000304697600009 ER PT J AU Janiak, DS Osman, RW AF Janiak, Dean S. Osman, Richard W. TI Experimental Effects of the Grass Shrimp, Palaemonetes pugio, on Hard-Substrate Communities in Chesapeake Bay and an Adjacent Coastal Bay, USA SO ESTUARIES AND COASTS LA English DT Article DE Palaemonetes pugio; Chesapeake Bay; Benthos; Hard-substrate; Predation ID SPARTINA-ALTERNIFLORA; ESTUARINE HABITATS; RUPPIA-MARITIMA; ZOSTERA-MARINA; PREDATION RISK; SALT-MARSH; ABUNDANCE; HOLTHUIS; PREY; MEIOFAUNA AB With increased shoreline hardening and development, it is important to understand the ecological processes occurring in these and adjacent coastal habitats. A common species found associated with these hard-substrate habitats in Chesapeake Bay is the grass shrimp, Palaemonetes pugio. Caging experiments were conducted from June to August 2010 to examine the effects of shrimp on the recruitment and development of hard-substrate communities. Experiments were conducted at two low-salinity sites within Chesapeake Bay and one high-salinity site in an adjacent coastal bay in Virginia. The addition of grass shrimp reduced recruitment of polychaetes and scyphistomae of the sea nettle, Chrysaora quinquecirrha, and increased recruitment of encrusting bryozoans and the oyster, Crassostrea virginica. After 12 weeks, sea nettles at one low-salinity site, dominated predator-exclusion treatments. At the high-salinity site, oysters dominated when shrimp were present. Although it is unclear whether the results of short-term caging studies can be applied across larger temporal and spatial scales, the significant effects of grass shrimp on two important Chesapeake Bay species suggests that increases in hard-substrate habitat could have broader impacts within this and other systems. C1 [Janiak, Dean S.; Osman, Richard W.] Smithsonian Environm Res Ctr, Edgewater, MD 21037 USA. RP Janiak, DS (reprint author), Smithsonian Environm Res Ctr, POB 28,647 Contees Wharf Rd, Edgewater, MD 21037 USA. EM janiakd@si.edu FU Smithsonian Marine Science Network FX This work was supported by funds from the Smithsonian Marine Science Network. We would like to thank the VIMS Eastern Shore lab and the Morgan State University Estuarine Research Center for their assistance and allowing us to conduct experiments at their sites. We would also like to thank CR Janiak for field assistance, useful comments on an earlier draft, and the design of Fig. 1. The manuscript benefited greatly from the comments of four anonymous reviewers. NR 38 TC 1 Z9 1 U1 1 U2 11 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1559-2723 J9 ESTUAR COAST JI Estuaries Coasts PD JUL PY 2012 VL 35 IS 4 BP 1128 EP 1136 DI 10.1007/s12237-012-9486-y PG 9 WC Environmental Sciences; Marine & Freshwater Biology SC Environmental Sciences & Ecology; Marine & Freshwater Biology GA 951CF UT WOS:000304697600018 ER PT J AU Sepulveda, AJ Lowe, WH Marra, PP AF Sepulveda, Adam J. Lowe, Winsor H. Marra, Peter P. TI Using stable isotopes to test for trophic niche partitioning: a case study with stream salamanders and fish SO FRESHWATER BIOLOGY LA English DT Article DE coexistence; Dicamptodon aterrimus; diet; headwater stream; stable isotope ID SIZE-STRUCTURED POPULATIONS; INTRAGUILD PREDATION; BREEDING SALAMANDER; GENE FLOW; DYNAMICS; ECOLOGY; CANNIBALISM; EVOLUTION; TROUT; WIDTH AB 1. Stream salamanders and fish often co-occur even though fish prey on and outcompete salamanders. However, the mechanisms that allow palatable salamanders to coexist with fish are unknown. 2. We tested mechanisms in the field that promote coexistence between Idaho giant salamanders (Dicamptodon aterrimus) and stream salmonid fishes in headwater streams. Previous research in this system indicated that salamander dispersal did not promote coexistence with fish. We tested the hypothesis that D center dot aterrimus shift their diet when they occur with fish, facilitating coexistence through local niche partitioning. 3. We used nitrogen and carbon stable isotopes to describe the trophic niche of D center dot aterrimus and fish in three co-occurring populations of salamanders and fish and three populations of salamanders without fish. We used two approaches to quantify trophic niche partitioning with stable isotopes: 95% kernel density estimators and isotopic mixing models. 4. We found that salamanders and fish were generalists that consumed aquatic invertebrates primarily, but both species were also cannibalistic and predatory on one another. We also found no support for trophic niche partitioning as a coexistence mechanism because there were no differences in the trophic niche metrics among salamander populations with and without fish. 5. Although we did not identify mechanisms that facilitate salamander and fish coexistence, our empirical data and use of novel approaches to describe the trophic niche did yield important insights on the role of predatorprey interactions and cannibalism as alternative coexistence mechanisms. In addition, we found that 95% kernel estimators are a simple and robust method to describe population-level measure of trophic structure. C1 [Sepulveda, Adam J.] US Geol Survey, No Rocky Mt Sci Ctr, Bozeman, MT 59715 USA. [Lowe, Winsor H.] Univ Montana, Div Biol Sci, Missoula, MT 59812 USA. [Marra, Peter P.] Natl Zool Pk, Migratory Bird Ctr, Smithsonian Conservat Biol Inst, Washington, DC USA. RP Sepulveda, AJ (reprint author), US Geol Survey, No Rocky Mt Sci Ctr, 2327 Univ Way,Suite 2, Bozeman, MT 59715 USA. EM asepulveda@usgs.gov FU Society for Northwestern Vertebrate Biology; Charlotte Martin Foundation; Pacific Rivers Council; USGS Montana River Center; University of Montana FX This research was funded by grants from the Society for Northwestern Vertebrate Biology, Charlotte Martin Foundation, the Pacific Rivers Council, USGS Montana River Center and the University of Montana. We thank Christine France (Smithsonian OUSS/MCI Stable Isotope Mass Spectrometry Facility) for assistance with sample analysis. We thank Jeff Bates and Joe Hanlon for assisting with fieldwork. This manuscript benefited from the comments of Steve Corn, Megan Layhee, John Maron, Scott Mills, Mike Schwartz, Art Woods and Mike Young. Any use of trade, product or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. NR 48 TC 3 Z9 3 U1 6 U2 62 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0046-5070 J9 FRESHWATER BIOL JI Freshw. Biol. PD JUL PY 2012 VL 57 IS 7 BP 1399 EP 1409 DI 10.1111/j.1365-2427.2012.02800.x PG 11 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA 955EU UT WOS:000305000700006 ER PT J AU Carvalho, JC Cardoso, P Gomes, P AF Carvalho, Jose C. Cardoso, Pedro Gomes, Pedro TI Determining the relative roles of species replacement and species richness differences in generating beta-diversity patterns SO GLOBAL ECOLOGY AND BIOGEOGRAPHY LA English DT Article DE Diversity partitioning; nestedness; richness gradient; similarity indices; species loss; species replacement ID DISTANCE DECAY; COMMUNITIES; SIMILARITY; GRADIENTS; TURNOVER AB Aim To determine the relative contribution of species replacement and species richness differences to the emergence of beta-diversity patterns. Innovation A novel method that disentangles all compositional differences (beta cc, overall beta diversity) in its two components, species replacement (beta-3) and species richness differences (beta rich) is proposed. The performance of the method was studied with ternary plots, which allow visualization of the influence of the relative proportions of shared and unique species of two sites over each metric. The method was also tested in different hypothetical gradients and with real datasets. The novel method was compared with a previous proposal based on the partitioning of overall compositional differences (beta sor) in replacement (beta sim) and nestedness (beta nes). The linear response of beta cc contrasts with the curvilinear response of beta sor to linear gradients of dissimilarity. When two sites did not share any species, beta sim was always 1 and beta-3 only reached 1 when the number of exclusive species of both sites was equal. beta-3 remained constant along gradients of richness differences with constant replacement, while beta sim decreased. beta rich had a linear response to a linear gradient of richness differences with constant species replacement, whereas beta nes exhibited a hump-shaped response. Moreover, beta sim > beta nes when clearly almost all species of one site were lost, whereas beta-3 < beta rich in the same circumstances. Main conclusions The behaviour of the partition of beta cc into beta-3 and beta rich is consistent with the variation of replacement and richness differences. The partitioning of beta sor into beta sim and beta nes overestimates the replacement component and underestimates richness differences. The novel methodology allows the discrimination of different causes of beta-diversity patterns along latitudinal, biogeographic or ecological gradients, by estimating correctly the relative contributions of replacement and richness differences. C1 [Carvalho, Jose C.; Gomes, Pedro] Univ Minho, Dept Biol, CBMA Mol & Environm Ctr, P-4710057 Braga, Portugal. [Cardoso, Pedro] Natl Museum Nat Hist, Smithsonian Inst, Washington, DC 20560 USA. [Cardoso, Pedro] Univ Azores, Azorean Biodivers Grp CITA A, Angra do Heroismo, Portugal. RP Carvalho, JC (reprint author), Univ Minho, Dept Biol, CBMA Mol & Environm Ctr, Gualtar Campus, P-4710057 Braga, Portugal. EM josecarvalho@bio.uminho.pt RI Cardoso, Pedro/A-8820-2008; Gomes, Pedro/I-8348-2015; CBMA, CBMA/J-1937-2016 OI Cardoso, Pedro/0000-0001-8119-9960; Gomes, Pedro/0000-0002-5595-6988; CBMA, CBMA/0000-0002-2841-2678 FU Luso-American Foundation; Portuguese Foundation for Science and Technology [SFRH/BPD/40688/2007] FX We thank David Currie, Jose A. Diniz-Filho, Joseph A. Veech, Adriano S. Melo and an anonymous referee for providing helpful suggestions on an earlier version of the manuscript. J.C.C. express his gratitude to the Luso-American Foundation for its support (FLAD C&T Links 2010 grant). P.C. was supported by the Portuguese Foundation for Science and Technology (SFRH/BPD/40688/2007). NR 34 TC 60 Z9 61 U1 4 U2 63 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1466-822X EI 1466-8238 J9 GLOBAL ECOL BIOGEOGR JI Glob. Ecol. Biogeogr. PD JUL PY 2012 VL 21 IS 7 BP 760 EP 771 DI 10.1111/j.1466-8238.2011.00694.x PG 12 WC Ecology; Geography, Physical SC Environmental Sciences & Ecology; Physical Geography GA 957SU UT WOS:000305183900008 ER PT J AU Holland, ND Kuhnz, LA Osborn, KJ AF Holland, Nicholas D. Kuhnz, Linda A. Osborn, Karen J. TI Morphology of a new deep-sea acorn worm (class Enteropneusta, phylum Hemichordata): A part-time demersal drifter with externalized ovaries SO JOURNAL OF MORPHOLOGY LA English DT Article DE Hemichordata; Enteropneusta; Torquaratoridae; Allapasus aurantiacus ID SACCOGLOSSUS-KOWALEVSKII; PACIFIC; GENUS; FLOW AB Ten individuals of an enteropneust in the family Torquaratoridae were videotaped between 2,900 and 3,500 m in the Eastern Pacificone drifting a few centimeters above the bottom, two exposed on the substrate, and seven partly burrowed, reflecting a bentho-pelagic life style. Here, we describe a captured specimen (26 cm living length) as the holotype of Allapasus aurantiacus n. gen., n. sp. The small proboscis is dome-shaped, and the collar is only slightly wider than deep; both of these body regions are more muscular than in other torquaratorids, which presumably facilitates burrowing. The proboscis complex, in contrast to that of shallow-living enteropneusts, lacks a pericardial sac and is located relatively posteriorly in the proboscis stalk. The stomochord is separated from the main course of the gut by the intervention of a small, plate-like proboscis skeleton lacking posterior horns. The most anterior region of the trunk houses the pharynx, in which the pharyngeal skeletal bars are not connected by synapticles. The postpharyngeal trunk comprises three intestinal regions: prehepatic, hepatic (with conspicuous sacculations), and posthepatic. On either side of the worm, a flap of body wall (lateral wing) runs the entire length of the trunk. The two lateral wings can wrap the body so their edges meet in the dorsal midline, although they often gape open along the pharyngeal region. The holotype is a female (presumably the species is gonochoric) with numerous ovaries located in the lateral wings along the pharyngeal region. Each larger ovary contains a single primary oocyte (up to 1,500 mu m in diameter) and bulges outwards in an epidermal pouch attached to the rest of the body by a slender stalk. Such externalized ovaries are unprecedented in any animal, and nothing is yet known of their role in the reproductive biology of A. aurantiacus. J. Morphol. 2012. (c) 2012 Wiley Periodicals, Inc. C1 [Holland, Nicholas D.] Univ Calif San Diego, Scripps Inst Oceanog, Div Marine Biol Res, La Jolla, CA 92093 USA. [Kuhnz, Linda A.] Monterey Bay Aquarium Res Inst, Moss Landing, CA 95039 USA. [Osborn, Karen J.] Natl Museum Nat Hist, Smithsonian Inst, Dept Invertebrate Zool, Washington, DC 20560 USA. RP Holland, ND (reprint author), Univ Calif San Diego, Scripps Inst Oceanog, Div Marine Biol Res, La Jolla, CA 92093 USA. EM nholland@ucsd.edu OI Osborn, Karen/0000-0002-4226-9257 FU David and Lucile Packard Foundation FX Contract grant sponsor: David and Lucile Packard Foundation. NR 35 TC 11 Z9 11 U1 1 U2 12 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0362-2525 EI 1097-4687 J9 J MORPHOL JI J. Morphol. PD JUL PY 2012 VL 273 IS 7 BP 661 EP 671 DI 10.1002/jmor.20013 PG 11 WC Anatomy & Morphology SC Anatomy & Morphology GA 953LI UT WOS:000304868400001 PM 22419131 ER PT J AU Saltonstall, K Lambertini, C AF Saltonstall, Kristin Lambertini, Carla TI The value of repetitive sequences in chloroplast DNA for phylogeographic inference: A comment on Vachon & Freeland 2011 SO MOLECULAR ECOLOGY RESOURCES LA English DT Letter DE chloroplast DNA; microsatellites; minisatellites; mutations; parsimony networks; phylogeography ID PHRAGMITES-AUSTRALIS; MICROSATELLITE VARIATION; INTERGENIC REGIONS; GENE GENEALOGIES; EVOLUTION; POACEAE; POPULATIONS; INDELS; GENOME AB In a recent Technical Advance article, Vachon and Freeland (2011, Molecular Ecology Resources, 11, 279-285.) evaluate the utility of repetitive and non-repetitive variation in the chloroplast genome for phylogeographic inference, using variation in Phragmites australis as an example. While we agree that repetitive and nonrepetitive regions evolve at different rates and homoplasy can impact results, we disagree with the conclusion that repetitive regions are inappropriate for large-scale phylogeographic studies. Here we describe limitations to the study dataset and analysis, and provide an alternative viewpoint on the utility of repetitive regions for phylogeographic studies. C1 [Saltonstall, Kristin] Smithsonian Trop Res Inst, Panama City, Panama. [Lambertini, Carla] Aarhus Univ, Dept Biosci, DK-8000 Aarhus C, Denmark. RP Saltonstall, K (reprint author), Smithsonian Trop Res Inst, Apartado 0843-03092, Panama City, Panama. EM kristin.saltonstall@aya.yale.edu RI Lambertini, Carla/H-3655-2014 OI Lambertini, Carla/0000-0002-2450-5455 NR 22 TC 8 Z9 8 U1 0 U2 22 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1755-098X J9 MOL ECOL RESOUR JI Mol. Ecol. Resour. PD JUL PY 2012 VL 12 IS 4 BP 581 EP 585 DI 10.1111/j.1755-0998.2012.03146.x PG 5 WC Biochemistry & Molecular Biology; Ecology; Evolutionary Biology SC Biochemistry & Molecular Biology; Environmental Sciences & Ecology; Evolutionary Biology GA 956DO UT WOS:000305070300002 PM 22533707 ER PT J AU Quicke, DLJ Smith, MA Janzen, DH Hallwachs, W Fernandez-Triana, J Laurenne, NM Zaldivar-Riveron, A Shaw, MR Broad, GR Klopfstein, S Shaw, SR Hrcek, J Hebert, PDN Miller, SE Rodriguez, JJ Whitfield, JB Sharkey, MJ Sharanowski, BJ Jussila, R Gauld, ID Chesters, D Vogler, AP AF Quicke, Donald L. J. Smith, M. Alex Janzen, Daniel H. Hallwachs, Winnie Fernandez-Triana, Jose Laurenne, Nina M. Zaldivar-Riveron, Alejandro Shaw, Mark R. Broad, Gavin R. Klopfstein, Seraina Shaw, Scott R. Hrcek, Jan Hebert, Paul D. N. Miller, Scott E. Rodriguez, Josephine J. Whitfield, James B. Sharkey, Michael J. Sharanowski, Barbara J. Jussila, Reijo Gauld, Ian D. Chesters, Douglas Vogler, Alfried P. TI Utility of the DNA barcoding gene fragment for parasitic wasp phylogeny (Hymenoptera: Ichneumonoidea): data release and new measure of taxonomic congruence SO MOLECULAR ECOLOGY RESOURCES LA English DT Article DE Braconidae; cytochrome oxidase 1; Ichneumonidae; sampling density; Simpson dominance index; taxonomic retention index ID PARTIAL 16S RDNA; BRACONIDAE HYMENOPTERA; MOLECULAR PHYLOGENY; RIBOSOMAL-RNA; 28S GENES; INSECTA; SUBFAMILIES; SEQUENCES; ALIGNMENT; ORIGIN AB The enormous cytochrome oxidase subunit I (COI) sequence database being assembled from the various DNA barcoding projects as well as from independent phylogenetic studies constitutes an almost unprecedented amount of data for molecular systematics, in addition to its role in species identification and discovery. As part of a study of the potential of this gene fragment to improve the accuracy of phylogenetic reconstructions, and in particular, exploring the effects of dense taxon sampling, we have assembled a data set for the hyperdiverse, cosmopolitan parasitic wasp superfamily Ichneumonoidea, including the release of 1793 unpublished sequences. Of approximately 84 currently recognized Ichneumonoidea subfamilies, 2500 genera and 41 000 described species, barcoding 5'-COI data were assembled for 4168 putative species-level terminals (many undescribed), representing 671 genera and all but ten of the currently recognized subfamilies. After the removal of identical and near-identical sequences, the 4174 initial sequences were reduced to 3278. We show that when subjected to phylogenetic analysis using both maximum likelihood and parsimony, there is a broad correlation between taxonomic congruence and number of included sequences. We additionally present a new measure of taxonomic congruence based upon the Simpson diversity index, the Simpson dominance index, which gives greater weight to morphologically recognized taxonomic groups (subfamilies) recovered with most representatives in one or a few contiguous groups or subclusters. C1 [Quicke, Donald L. J.; Chesters, Douglas; Vogler, Alfried P.] Univ London Imperial Coll Sci Technol & Med, Div Biol, London SW7 2AZ, England. [Quicke, Donald L. J.; Broad, Gavin R.; Gauld, Ian D.; Chesters, Douglas; Vogler, Alfried P.] Nat Hist Museum, Dept Entomol, London SW7 5DB, England. [Smith, M. Alex; Fernandez-Triana, Jose; Hebert, Paul D. N.] Univ Guelph, Biodivers Inst Ontario, Dept Integrat Biol, Guelph, ON N1G 2W1, Canada. [Janzen, Daniel H.; Hallwachs, Winnie] Univ Penn, Dept Biol, Philadelphia, PA 19104 USA. [Fernandez-Triana, Jose] Canadian Natl Collect Insects, Ottawa, ON K1A 0C6, Canada. [Laurenne, Nina M.] Aalto Univ, Dept Media Technol, Sch Sci, FI-00076 Aalto, Finland. [Laurenne, Nina M.] Univ Helsinki, Dept Comp Sci, FIN-00014 Helsinki, Finland. [Zaldivar-Riveron, Alejandro] Univ Nacl Autonoma Mexico, Inst Biol, Colecc Nacl Insectos, Mexico City 04510, DF, Mexico. [Shaw, Mark R.] Natl Museums Scotland, Edinburgh EH1 1JF, Midlothian, Scotland. [Klopfstein, Seraina] Nat Hist Museum, Dept Invertebrates, CH-3005 Bern, Switzerland. [Klopfstein, Seraina] Univ Bern, Inst Zool, Div Community Ecol, CH-3012 Bern, Switzerland. [Shaw, Scott R.] Univ Wyoming, Dept Renewable Resources 3354, Insect Museum, Laramie, WY 82071 USA. [Hrcek, Jan] Acad Sci Czech Republic, Ctr Biol, Ceske Budejovice 37005, Czech Republic. [Hrcek, Jan] Univ S Bohemia, Fac Sci, Ceske Budejovice 37005, Czech Republic. [Miller, Scott E.] Smithsonian Inst, Washington, DC 20013 USA. [Rodriguez, Josephine J.] Univ Calif Santa Barbara, Natl Ctr Ecol Anal & Synth NCEAS, Santa Barbara, CA 93101 USA. [Whitfield, James B.] Univ Illinois, Dept Entomol, Urbana, IL 61801 USA. [Sharkey, Michael J.] Univ Kentucky, Dept Entomol, Lexington, KY 40546 USA. [Sharanowski, Barbara J.] N Carolina State Univ, Dept Entomol, Raleigh, NC 27695 USA. RP Quicke, DLJ (reprint author), Univ London Imperial Coll Sci Technol & Med, Div Biol, London SW7 2AZ, England. EM d.quicke@imperial.ac.uk RI Smith, M Alex/B-4468-2013; Hebert, Paul/C-4161-2013; Hrcek, Jan/D-7335-2015; Sharanowski, Barbara/I-2176-2016; OI Smith, M Alex/0000-0002-8650-2575; Hebert, Paul/0000-0002-3081-6700; Hrcek, Jan/0000-0003-0711-6447; Sharanowski, Barbara/0000-0002-8085-5900; Quicke, Donald/0000-0003-4471-6775; Miller, Scott/0000-0002-4138-1378 FU NSF [BSR 9024770, DEB 9306296, 9400829, 9705072, 0072730, 0515699, DEB-0841885, DEB-0542864]; Grant Agency of the Czech Republic [206/09/0115]; NERC [NDC519583, NER/S/A/2006/14013]; CONABIO [HB033]; CONACyT [511]; Canadian Barcode of Life Research Network from Genome Canada through the Ontario Genomics Institute; NSERC FX We would like to thank the following people who kindly provided additional specimens for sequencing: Andy Deans (North Carolina State University, Raleigh), Brian Fisher and Robert Zuparko (California Academy of Sciences, San Francisco), Kees van Achterberg (Leiden). This research was supported by specimens and barcodes obtained under the following grants: NSF grants BSR 9024770 and DEB 9306296, 9400829, 9705072, 0072730, and 0515699 to D. H. Janzen (as described in Janzen et al. 2009); NSF grant (DEB-0841885) to G. Weiblen; NSF grant DEB-0542864 (TIGER Project) to M. J. Sharkey; Grant Agency of the Czech Republic grant 206/09/0115 to V. Novotny; NERC grant NDC519583 to D. L. J. Quicke (and A. Purvis); CONABIO (HB033), CONACyT grants (Red Tematica de Codigos de Barra de la Vida, Proyecto Ciencia Basica CONACyT no. 511) to AZR; MAS was supported by Canadian Barcode of Life Research Network from Genome Canada through the Ontario Genomics Institute and an NSERC Discovery Grant. D. Chesters was funded by NERC Case studentship NER/S/A/2006/14013. NR 52 TC 16 Z9 18 U1 1 U2 34 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1755-098X J9 MOL ECOL RESOUR JI Mol. Ecol. Resour. PD JUL PY 2012 VL 12 IS 4 BP 676 EP 685 DI 10.1111/j.1755-0998.2012.03143.x PG 10 WC Biochemistry & Molecular Biology; Ecology; Evolutionary Biology SC Biochemistry & Molecular Biology; Environmental Sciences & Ecology; Evolutionary Biology GA 956DO UT WOS:000305070300013 PM 22487608 ER PT J AU Kara, EL Hanson, P Hamilton, D Hipsey, MR McMahon, KD Read, JS Winslow, L Dedrick, J Rose, K Carey, CC Bertilsson, S Marques, DD Beversdorf, L Miller, T Wu, C Hsieh, YF Gaiser, E Kratz, T AF Kara, Emily L. Hanson, Paul Hamilton, David Hipsey, Matthew R. McMahon, Katherine D. Read, Jordan S. Winslow, Luke Dedrick, John Rose, Kevin Carey, Cayelan C. Bertilsson, Stefan Marques, David da Motta Beversdorf, Lucas Miller, Todd Wu, Chin Hsieh, Yi-Fang Gaiser, Evelyn Kratz, Tim TI Time-scale dependence in numerical simulations: Assessment of physical, chemical, and biological predictions in a stratified lake at temporal scales of hours to months SO ENVIRONMENTAL MODELLING & SOFTWARE LA English DT Article DE Ecosystem modeling; Phytoplankton; Spectral analysis; Wavelet analysis; Automated observatory; Sensor network ID FOOD SELECTION; CHLOROPHYLL-A; ELEMENTAL STOICHIOMETRY; TEMPERATURE-DEPENDENCE; SPATIAL HETEROGENEITY; EUTROPHICATION MODEL; SENSITIVITY-ANALYSIS; PLANKTON PATCHINESS; SUBTROPICAL LAKE; DISSOLVED-OXYGEN AB We evaluated the predictive ability of a one-dimensional coupled hydrodynamic-biogeochemical model across multiple temporal scales using wavelet analysis and traditional goodness-of-fit metrics. High-frequency in situ automated sensor data and long-term manual observational data from Lake Mendota, Wisconsin, USA, were used to parameterize, calibrate, and evaluate model predictions. We focused specifically on short-term predictions of temperature, dissolved oxygen, and phytoplankton biomass over one season. Traditional goodness-of-fit metrics indicated more accurate prediction of physics than chemical or biological variables in the time domain. This was confirmed by wavelet analysis in both the time and frequency domains. For temperature, predicted and observed global wavelet spectra were closely related, while observed dissolved oxygen and chlorophyll fluorescence spectral characteristics were not reproduced by the model for key time scales, indicating that processes not modeled may be important drivers of the observed signal. Although the magnitude and timing of physical and biological changes were simulated adequately at the seasonal time scale through calibration, time scale-specific dynamics, for example short-term cycles, were difficult to reproduce, and were relatively insensitive to the effects of varying parameters. The use of wavelet analysis is novel to aquatic ecosystem modeling, is complementary to traditional goodness-of-fit metrics, and allows for assessment of variability at specific temporal scales. In this way, the effect of processes operating at distinct temporal scales can be isolated and better understood, both in situ and in silico. Wavelet transforms are particularly well suited for assessment of temporal and spatial heterogeneity when coupled to high-frequency data from automated in situ or remote sensing platforms. (C) 2012 Elsevier Ltd. All rights reserved. C1 [Kara, Emily L.; McMahon, Katherine D.; Read, Jordan S.; Beversdorf, Lucas; Miller, Todd; Wu, Chin; Hsieh, Yi-Fang] Univ Wisconsin, Dept Civil & Environm Engn, Madison, WI 53706 USA. [Hanson, Paul; Winslow, Luke; Dedrick, John; Kratz, Tim] Univ Wisconsin, Ctr Limnol, Madison, WI 53706 USA. [Hamilton, David] Univ Waikato, Dept Biol Sci, Hamilton 3240, New Zealand. [Hipsey, Matthew R.] Univ Western Australia, Sch Earth & Environm, Crawley, WA 6009, Australia. [McMahon, Katherine D.] Univ Wisconsin, Dept Bacteriol, Madison, WI 53706 USA. [Rose, Kevin] Smithsonian Environm Res Ctr, Edgewater, MD 21037 USA. [Carey, Cayelan C.] Cornell Univ, Dept Ecol & Evolutionary Biol, Ithaca, NY 14853 USA. [Bertilsson, Stefan] Uppsala Univ, Dept Ecol Genet & Limnol, S-75236 Uppsala, Sweden. [Marques, David da Motta] Univ Fed Rio Grande do Sul, Inst Pesquisa Hidraul, BR-91501970 Porto Alegre, RS, Brazil. [Gaiser, Evelyn] SE Environm Res Ctr, Dept Biol Sci, Miami, FL 33199 USA. RP Kara, EL (reprint author), Univ Wisconsin, Dept Civil & Environm Engn, 1415 Engn Dr, Madison, WI 53706 USA. EM kara@wisc.edu RI McMahon, Katherine/I-3651-2012; Wu, Chin/C-2042-2009; Hipsey, Matthew/C-3551-2009; Carey, Cayelan/D-4874-2016; OI Wu, Chin/0000-0001-8393-1940; Hipsey, Matthew/0000-0001-8386-4354; Carey, Cayelan/0000-0001-8835-4476; Winslow, Luke/0000-0002-8602-5510; Read, Emily/0000-0002-9617-9433; McMahon, Katherine D./0000-0002-7038-026X FU US National Science Foundation; National Science Foundation (NSF) [CBET 0738039, 0903560, 0822700]; National Institute of Food and Agriculture, United States Department of Agriculture [WIS01516]; EARS IGERT program FX This work was funded in part by grants from the US National Science Foundation to the Global Lake Ecological Observatory Network (GLEON). ELK and KDM were supported by an NSF CAREER award (CBET 0738039) and the National Institute of Food and Agriculture, United States Department of Agriculture (ID number WIS01516). KCR was supported by a the EARS IGERT program, NSF DGE IGERT #0903560. This material is based upon NTL LTER work supported by the National Science Foundation under Cooperative Agreement #0822700. Wavelet software was provided by C. Torrence and G. Compo, and is available at URL: http://atoc.colorado.edu/research/wavelets/. We are grateful for the thoughtful comments of four anonymous reviewers. NR 116 TC 18 Z9 18 U1 2 U2 47 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 1364-8152 J9 ENVIRON MODELL SOFTW JI Environ. Modell. Softw. PD JUL PY 2012 VL 35 BP 104 EP 121 DI 10.1016/j.envsoft.2012.02.014 PG 18 WC Computer Science, Interdisciplinary Applications; Engineering, Environmental; Environmental Sciences SC Computer Science; Engineering; Environmental Sciences & Ecology GA 944PY UT WOS:000304217500010 ER PT J AU Sessa, EB Zimmer, EA Givnish, TJ AF Sessa, Emily B. Zimmer, Elizabeth A. Givnish, Thomas J. TI Unraveling reticulate evolution in North American Dryopteris (Dryopteridaceae) SO BMC EVOLUTIONARY BIOLOGY LA English DT Article DE Ferns; Divergence time estimates; Genetic distances; Hybridization; Introgression; Phylogeny; Polyploidy ID LENGTH DIFFERENCE TEST; FERN GENUS ASTROLEPIS; CHLOROPLAST DNA; MOLECULAR PHYLOGENY; DIVERGENCE TIMES; FILIX-MAS; PHLOROGLUCINOL DERIVATIVES; HISTORICAL BIOGEOGRAPHY; POLYPLOID SPECIATION; RECURRENT FORMATION AB Background: The thirteen species of Dryopteris in North America have long been suspected of having undergone a complicated history of reticulate evolution via allopolyploid hybridization. Various explanations for the origins of the allopolyploid taxa have been suggested, and though most lines of evidence have supported the so-called "semicristata" hypothesis, contention over the group's history has continued in several recent, conflicting studies. Results: Sequence data from nine plastid and two nuclear markers were collected from 73 accessions representing 35 species of Dryopteris. Sequences from each of the allopolyploids are most closely related to their progenitor species as predicted by the "semicristata" hypothesis. Allotetraploid D. campyloptera appears to be derived from a hybrid between diploid D. expansa and D. intermedia; D. celsa, from diploid D. ludoviciana x D. goldiana; and D. carthusiana and D. cristata, from diploid "D. semicristata" x D. intermedia and D. ludoviciana, respectively. Allohexaploid D. clintoniana appears to be derived from D. cristata x D. goldiana. The earliest estimated dates of formation of the allopolyploids, based on divergence time analyses, were within the last 6 Ma. We found no evidence for recurrent formation of any of the allopolyploids. The sexual allopolyploid taxa are derived from crosses between parents that show intermediate levels of genetic divergence relative to all pairs of potential progenitors. In addition, the four allotetraploids are transgressive with respect to geographic range relative to one or both of their parents (their ranges extend beyond those of the parents), suggesting that ecological advantages in novel habitats or regions may promote long-term regional coexistence of the hybrid taxa with their progenitors. Conclusions: This study provides the first thorough evaluation of the North American complex of woodferns using extensive sampling of taxa and genetic markers. Phylogenies produced from each of three datasets (one plastid and two nuclear) support the "semicristata" hypothesis, including the existence of a missing diploid progenitor, and allow us to reject all competing hypotheses. This study demonstrates the value of using multiple, biparentally inherited markers to evaluate reticulate complexes, assess the frequency of recurrent polyploidization, and determine the relative importance of introgression vs. hybridization in shaping the histories of such groups. C1 [Sessa, Emily B.; Givnish, Thomas J.] Univ Wisconsin, Dept Bot, Madison, WI 53706 USA. [Zimmer, Elizabeth A.] Smithsonian Inst, Natl Museum Nat Hist, Dept Bot, Washington, DC 20013 USA. RP Sessa, EB (reprint author), Univ Wisconsin, Dept Bot, 430 Lincoln Dr, Madison, WI 53706 USA. EM esessa@wisc.edu FU National Science Foundation (DDIG) [DEB-1110335]; Huron Mountain Wildlife Foundation; Botanical Society of America; American Society of Plant Taxonomists; Torrey Botanical Society; Smithsonian Graduate Research Fellowship FX The authors thank E. Alverson, S. Bornell, B. Gilman, T. Grabs, A. Jandl, C. Line, S. Lorbeer, B. & A. Manierre, T. Meyer, A. Reznicek, C. Taylor, B. Vesterby, S. Wechsler, D. Werier, F. R. Wesley, K. Woods, and especially T. Goforth for help in the field; J. Geiger, S. Hennequin, C. Rothfels, and J. E. Watkins for providing material; D. Giblin, M. McNamara, R. Moran, R. Olmstead, A. Smith, M. Sundue, and S. Vance for help with arranging herbarium visits; herbaria BH, NY, MO, UC, US, WTU for letting us view specimens; and the Finger Lakes Land Trust, Huron Mountain Club, Fernwood Botanical Gardens, and University of Wisconsin-Madison Arboretum for allowing us to visit and collect Dryopteris in the field. Profound thanks to M. Ames, C. Ane, B. Berger, A. Gardner, P. Gonsiska, B. Grady, J. Hunt, R. Jabaily, D. Stein, and K. Sytsma for advice and discussion. We gratefully acknowledge financial support for this research from: the National Science Foundation (DDIG award to EBS, TJG; grant DEB-1110335); the Huron Mountain Wildlife Foundation (EBS, TJG); graduate research awards from the Botanical Society of America, American Society of Plant Taxonomists, and Torrey Botanical Society (EBS), and a Smithsonian Graduate Research Fellowship (EBS). Funding sources had no involvement in study design, data collection, analysis, interpretation, or article preparation or submission. NR 130 TC 18 Z9 19 U1 2 U2 36 PU BIOMED CENTRAL LTD PI LONDON PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND SN 1471-2148 J9 BMC EVOL BIOL JI BMC Evol. Biol. PD JUN 30 PY 2012 VL 12 AR 104 DI 10.1186/1471-2148-12-104 PG 24 WC Evolutionary Biology; Genetics & Heredity SC Evolutionary Biology; Genetics & Heredity GA 051NE UT WOS:000312133200001 PM 22748145 ER PT J AU Campbell, BA AF Campbell, Bruce A. TI High circular polarization ratios in radar scattering from geologic targets SO JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS LA English DT Article ID POLARIMETRIC SAR DATA; GALILEAN SATELLITES; SURFACE-ROUGHNESS; 70-CM WAVELENGTH; LAVA FLOW; MODEL; ARECIBO; VENUS; MARS; MOON AB We examine and model the occurrence of circular polarization ratio (CPR or mu(c)) values greater than unity in terrestrial and planetary radar observations as a guide to the range of associated surface morphology. Lunar crater deposits exhibit maximum mu(c) values at 12.6 and 70-cm wavelength of 2 to 3. CPR values for Maxwell Montes on Venus range up to about 1.5 at 12.6-cm wavelength. Echoes from SP Flow in Arizona exhibit mu(c) up to 2 at 24-cm wavelength. Scattering from rock edges and cracks (dipole-like) produces mu(c) of unity for single scattering and up to about 2 for multiple reflections. Scattering from natural corner reflectors (dihedrals) formed by pairs of rock facets can yield an average mu(c) of 3-4, but likely requires non-random or scale-limited surface roughness properties in order to dominate the observed echo. The dihedral mechanism is required to satisfy the highest lunar mu(c) observations, while echoes from SP Flow and Maxwell Montes could be explained by just the dipole mechanism. The dihedral scenario requires rocky facets on scales many times the radar wavelength, which the blocks at SP Flow (and the unknown surface texture of Maxwell) may not provide. The random dipole model is less demanding in terms of structures and scales, and likely increases the CPR of lunar or asteroid regoliths through scattering from and between rocks. C1 Smithsonian Inst, Ctr Earth & Planetary Studies, Washington, DC 20013 USA. RP Campbell, BA (reprint author), Smithsonian Inst, Ctr Earth & Planetary Studies, MRC 315,POB 37012, Washington, DC 20013 USA. EM campbellb@si.edu FU NASA FX The author thanks C. Neish and W. Fa for helpful reviews of the paper and M. Shepard for comments on earlier drafts. This work was supported in part by grants from the NASA Planetary Astronomy and Planetary Geology and Geophysics Programs. NR 47 TC 17 Z9 18 U1 1 U2 8 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0148-0227 J9 J GEOPHYS RES-PLANET JI J. Geophys. Res.-Planets PD JUN 30 PY 2012 VL 117 AR E06008 DI 10.1029/2012JE004061 PG 9 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 968PE UT WOS:000305994900003 ER PT J AU Hines, HM Papa, R Ruiz, M Papanicolaou, A Wang, C Nijhout, HF McMillan, WO Reed, RD AF Hines, Heather M. Papa, Riccardo Ruiz, Mayte Papanicolaou, Alexie Wang, Charles Nijhout, H. Frederik McMillan, W. Owen Reed, Robert D. TI Transcriptome analysis reveals novel patterning and pigmentation genes underlying Heliconius butterfly wing pattern variation SO BMC GENOMICS LA English DT Article DE Heliconius; Adaptation; Pigmentation; Ommochrome; Melanin; Genomics; Evo-devo ID GENOME-WIDE IDENTIFICATION; BOMBYX-MORI; EVO-DEVO; DROSOPHILA-MELANOGASTER; LINKAGE MAP; EVOLUTION; COLOR; EXPRESSION; GENETICS; YELLOW AB Background: Heliconius butterfly wing pattern diversity offers a unique opportunity to investigate how natural genetic variation can drive the evolution of complex adaptive phenotypes. Positional cloning and candidate gene studies have identified a handful of regulatory and pigmentation genes implicated in Heliconius wing pattern variation, but little is known about the greater developmental networks within which these genes interact to pattern a wing. Here we took a large-scale transcriptomic approach to identify the network of genes involved in Heliconius wing pattern development and variation. This included applying over 140 transcriptome microarrays to assay gene expression in dissected wing pattern elements across a range of developmental stages and wing pattern morphs of Heliconius erato. Results: We identified a number of putative early prepattern genes with color-pattern related expression domains. We also identified 51 genes differentially expressed in association with natural color pattern variation. Of these, the previously identified color pattern "switch gene" optix was recovered as the first transcript to show color-specific differential expression. Most differentially expressed genes were transcribed late in pupal development and have roles in cuticle formation or pigment synthesis. These include previously undescribed transporter genes associated with ommochrome pigmentation. Furthermore, we observed upregulation of melanin-repressing genes such as ebony and Dat1 in non-melanic patterns. Conclusions: This study identifies many new genes implicated in butterfly wing pattern development and provides a glimpse into the number and types of genes affected by variation in genes that drive color pattern evolution. C1 [Hines, Heather M.; McMillan, W. Owen] N Carolina State Univ, Dept Genet, Raleigh, NC 27695 USA. [Hines, Heather M.] Penn State Univ, Dept Biol, University Pk, PA 16802 USA. [Papa, Riccardo; Reed, Robert D.] Univ Calif Irvine, Dept Ecol & Evolutionary Biol, Irvine, CA 92697 USA. [Papa, Riccardo; Ruiz, Mayte] Univ Puerto Rico, Dept Biol, San Juan, PR 00921 USA. [Papa, Riccardo; Ruiz, Mayte] Univ Puerto Rico, Ctr Appl Trop Ecol & Conservat, San Juan, PR 00921 USA. [Papanicolaou, Alexie] CSIRO Ecosyst Sci, Canberra, ACT 2601, Australia. [Wang, Charles] City Hope Natl Med Ctr, Beckman Res Inst, Funct Genom Core, Duarte, CA 91010 USA. [Nijhout, H. Frederik] Duke Univ, Dept Biol, Durham, NC 27708 USA. [McMillan, W. Owen; Reed, Robert D.] Smithsonian Trop Res Inst, Panama City, Panama. [Reed, Robert D.] Cornell Univ, Dept Ecol & Evolutionary Biol, Ithaca, NY 14853 USA. RP Hines, HM (reprint author), N Carolina State Univ, Dept Genet, Box 7614, Raleigh, NC 27695 USA. EM hmh19@psu.edu RI Reed, Robert/A-2419-2008; Papanicolaou, Alexie/A-1618-2011 OI Papanicolaou, Alexie/0000-0002-3635-6848 FU Ruth L. Kirschstein National Research Service Award [F32 GM889942]; NASA [NNX10AM80H, NNX07AO30A]; NSF [IBN-0344705, DEB-0844244, DEB-0715096, IOS-1052541] FX We wish to thank the Ministerio del Ambiente in Ecuador and the Intendencia Forestal y de Fauna Silvestre Instituto Nacional de Recurso Naturales in Peru for permission to collect butterflies. A special thanks goes to Ana Maria Quiles and to at the Smithsonian Tropical Research Institute for help rearing larvae and maintaining the Heliconius insectaries in Puerto Rico and Panama respectively. We would like to thank Eric Stone for advice on the manuscript and Arnaud Martin for advice on candidate genes and providing images. This project is funded by a Ruth L. Kirschstein National Research Service Award F32 GM889942 (HMH), a NASA grant (NNX10AM80H and NNX07AO30A) to RP, and NSF grants IBN-0344705 (WOM, HFN), DEB-0844244 (WOM, RDR), DEB-0715096 (WOM, RDR), and IOS-1052541 (RDR, WOM, RP). NR 84 TC 23 Z9 23 U1 1 U2 62 PU BIOMED CENTRAL LTD PI LONDON PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND SN 1471-2164 J9 BMC GENOMICS JI BMC Genomics PD JUN 29 PY 2012 VL 13 AR 288 DI 10.1186/1471-2164-13-288 PG 16 WC Biotechnology & Applied Microbiology; Genetics & Heredity SC Biotechnology & Applied Microbiology; Genetics & Heredity GA 008DA UT WOS:000308936300001 PM 22747837 ER PT J AU Marriner, N Flaux, C Kaniewski, D Morhange, C Leduc, G Moron, V Chen, Z Gasse, F Empereur, JY Stanley, JD AF Marriner, Nick Flaux, Clement Kaniewski, David Morhange, Christophe Leduc, Guillaume Moron, Vincent Chen, Zhongyuan Gasse, Francoise Empereur, Jean-Yves Stanley, Jean-Daniel TI ITCZ and ENSO-like pacing of Nile delta hydro-geomorphology during the Holocene SO QUATERNARY SCIENCE REVIEWS LA English DT Article DE Nile; Delta; Holocene climate change; ITCZ; ENSO; Civilizations ID NORTH-ATLANTIC CLIMATE; LAST GLACIAL MAXIMUM; AFRICAN RAINFALL; DIATOM RECORD; EAST-AFRICA; SUDAN; MONSOON; EVOLUTION; SAHARA; VARIABILITY AB The Nile valley accommodates the world's longest river and shaped the development of numerous complex societies, providing a reliable source of water for farming and linking populations to sub-Saharan Africa and the Mediterranean Sea. Its fertile delta lay at the heart of ancient Egyptian civilization, however little is known of its morpho-sedimentary response to basin-wide changes in Holocene hydrology. Here, we present two well-resolved records from the Nile delta (based on similar to 320 radiocarbon dates) to reconstruct the timing and rhythm of catchment-scale modifications during the past 8000 years. On the orbital timescale, we demonstrate that Nilotic hydrology and sedimentation have responded to low-latitude insolation forcing while, on sub-millennial timescales, many of the major phases of deltaic modification were mediated by climate events linked to El Nino Southern Oscillation-type (ENSO) variability. (C) 2012 Elsevier Ltd. All rights reserved. C1 [Marriner, Nick; Gasse, Francoise] CEREGE UMR 7330, CNRS, F-13545 Aix En Provence 04, France. [Flaux, Clement; Morhange, Christophe; Moron, Vincent] Univ Aix Marseille, CEREGE UMR 7330, F-13545 Aix En Provence 04, France. [Kaniewski, David] Univ Toulouse 3, EcoLab Lab Ecol Fonct, F-31062 Toulouse 9, France. [Leduc, Guillaume] Univ Kiel, Inst Earth Sci, D-24118 Kiel, Germany. [Moron, Vincent] Columbia Univ, Int Res Inst Climate & Soc, New York, NY USA. [Chen, Zhongyuan] E China Normal Univ, Shanghai 200062, Peoples R China. [Empereur, Jean-Yves] CNRS, UMS 1812, Ctr Etudes Alexandrines, Alexandria 21131, Egypt. [Stanley, Jean-Daniel] Smithsonian Inst, Geoarchaeol Program, Natl Museum Nat Hist, Washington, DC 20013 USA. RP Marriner, N (reprint author), CEREGE UMR 7330, CNRS, BP 80, F-13545 Aix En Provence 04, France. EM marriner@cerege.fr RI Leduc, Guillaume/A-8930-2008; OI Marriner, Nick/0000-0002-7916-6059 FU ANR Paleomed [09-BLAN-0323-01]; Artemis INSU; PEPS INSHS; PEPS INEE FX We thank two anonymous referees, R. Bonnefille, M. Taieb and E. Van Campo for critical review and comments on earlier versions of the manuscript. Research was funded by ANR Paleomed (09-BLAN-0323-01), Artemis INSU, PEPS INSHS and PEPS INEE. NR 79 TC 28 Z9 30 U1 2 U2 36 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0277-3791 J9 QUATERNARY SCI REV JI Quat. Sci. Rev. PD JUN 29 PY 2012 VL 45 BP 73 EP 84 DI 10.1016/j.quascirev.2012.04.022 PG 12 WC Geography, Physical; Geosciences, Multidisciplinary SC Physical Geography; Geology GA 981QB UT WOS:000306983200007 ER PT J AU Zimbelman, JR Scheidt, SP AF Zimbelman, James R. Scheidt, Stephen P. TI Hesperian Age for Western Medusae Fossae Formation, Mars SO SCIENCE LA English DT Article ID CRATER C1 [Zimbelman, James R.; Scheidt, Stephen P.] Smithsonian Inst, Natl Air & Space Museum, MRC 315, Ctr Earth & Planetary Studies, Washington, DC 20013 USA. RP Zimbelman, JR (reprint author), Smithsonian Inst, Natl Air & Space Museum, MRC 315, Ctr Earth & Planetary Studies, Washington, DC 20013 USA. EM zimbelmanj@si.edu FU NASA from the Planetary Geology and Geophysics program [NNX07AP42G] FX This work was supported by NASA grant NNX07AP42G from the Planetary Geology and Geophysics program. NR 11 TC 20 Z9 20 U1 3 U2 10 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD JUN 29 PY 2012 VL 336 IS 6089 BP 1683 EP 1683 DI 10.1126/science.1221094 PG 1 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 965VD UT WOS:000305794500043 PM 22628559 ER PT J AU Munoz, F Couteron, P Hubbell, SP AF Munoz, Francois Couteron, Pierre Hubbell, Stephen P. TI Comment on "Global Correlations in Tropical Tree Species Richness and Abundance Reject Neutrality" SO SCIENCE LA English DT Editorial Material ID MODELS; DIVERSITY C1 [Munoz, Francois; Couteron, Pierre] Univ Montpellier 2, F-34398 Montpellier 5, France. [Munoz, Francois; Couteron, Pierre] Inst Rech Dev, UMR AMAP, F-34398 Montpellier 5, France. [Hubbell, Stephen P.] Univ Calif Los Angeles, Dept Ecol & Evolutionary Biol, Los Angeles, CA 90095 USA. [Hubbell, Stephen P.] Smithsonian Trop Res Inst, Ctr Trop Forest Sci, Miami, FL 34002 USA. RP Munoz, F (reprint author), Univ Montpellier 2, TA A-51-PS2, F-34398 Montpellier 5, France. EM francois.munoz@cirad.fr RI Munoz, Francois/C-4239-2015 OI Munoz, Francois/0000-0001-8776-4705 NR 6 TC 4 Z9 4 U1 0 U2 19 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD JUN 29 PY 2012 VL 336 IS 6089 DI 10.1126/science.1222718 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 965VD UT WOS:000305794500021 PM 22745404 ER PT J AU Thompson, FC AF Thompson, F. Christian TI Costarica Mengual & Thompson, 2009 (Insecta: Diptera: Syrphidae) junior homonym of Costarica Kocak & Kemal, 2008 (Insecta: Orthoptera): proposed replacement by Tiquicia nom. nov. SO ZOOTAXA LA English DT Letter C1 Smithsonian Inst, Dept Entomol, Washington, DC 20560 USA. RP Thompson, FC (reprint author), Smithsonian Inst, Dept Entomol, NHB-0169, Washington, DC 20560 USA. EM thompsonf@si.edu NR 3 TC 4 Z9 5 U1 0 U2 1 PU MAGNOLIA PRESS PI AUCKLAND PA PO BOX 41383, AUCKLAND, ST LUKES 1030, NEW ZEALAND SN 1175-5326 EI 1175-5334 J9 ZOOTAXA JI Zootaxa PD JUN 29 PY 2012 IS 3360 BP 68 EP 68 PG 1 WC Zoology SC Zoology GA 974MS UT WOS:000306440200003 ER PT J AU Turner, AJ Henze, DK Martin, RV Hakami, A AF Turner, A. J. Henze, D. K. Martin, R. V. Hakami, A. TI The spatial extent of source influences on modeled column concentrations of short-lived species SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID NOX EMISSIONS; ISOPRENE EMISSIONS; INTEX-B; SPACE; CHEMISTRY; NITROGEN AB Providing top-down constraints on emissions is an important application of model-based analysis of remote-sensing observations of chemically reactive species, yet the degree to which column concentrations are governed by local vs distant sources within models themselves has yet to be fully characterized. We use a chemical transport model and its adjoint to quantify source contributions to weekly column concentrations of ammonia, nitrogen dioxide, sulfur dioxide, and formaldehyde. This efficient approach for quantifying the spatial extent of source influences is validated and then applied to an array of sites and seasons. Overall, we find instances for each species where emissions from at least 500 km away must be taken into account to retrieve 90% of the total column influence. This demonstrates that the common practice of assuming a local relationship between satellite observations and emissions in top-down constraints could lead to considerable biases, an issue that will be exacerbated as the resolution of models and observations are refined in coming years. Citation: Turner, A. J., D. K. Henze, R. V. Martin, and A. Hakami (2012), The spatial extent of source influences on modeled column concentrations of short-lived species, Geophys. Res. Lett., 39, L12806, doi:10.1029/2012GL051832. C1 [Turner, A. J.; Henze, D. K.] Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA. [Martin, R. V.] Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS, Canada. [Martin, R. V.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Hakami, A.] Carleton Univ, Dept Civil & Environm Engn, Ottawa, ON K1S 5B6, Canada. RP Turner, AJ (reprint author), Univ Colorado, Dept Mech Engn, 427 UCB, Boulder, CO 80309 USA. EM alexander.turner@colorado.edu RI Martin, Randall/C-1205-2014 OI Martin, Randall/0000-0003-2632-8402 FU NASA Applied Sciences Program grant [NNX09AN77G]; University of Colorado's Discovery Learning Center Apprenticeship program; Environment Canada FX This work was supported through NASA Applied Sciences Program grant NNX09AN77G, the University of Colorado's Discovery Learning Center Apprenticeship program, and access to the NASA Advanced Supercomputing Facility. Activities at Dalhousie University were supported by Environment Canada. NR 33 TC 13 Z9 13 U1 0 U2 12 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0094-8276 EI 1944-8007 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD JUN 28 PY 2012 VL 39 AR L12806 DI 10.1029/2012GL051832 PG 5 WC Geosciences, Multidisciplinary SC Geology GA 968NP UT WOS:000305989600003 ER PT J AU Malabarba, LR Jerep, FC AF Malabarba, Luiz R. Jerep, Fernando C. TI A New Genus and Species of Cheirodontine Fish from South America (Teleostei: Characidae) SO COPEIA LA English DT Article ID CAUDAL-FIN AB Ctenocheirodon pristis, a new genus and species of cheirodontine fish from South America is described. The new genus possesses derived ventral procurrent caudal-fin rays and anal-fin rays that support its placement among characids of the tribe Cheirodontinl. The new genus and species is diagnosed from the other members of the tribe by the shape of ventral procurrent caudal-fin rays and anal-fin rays. C1 [Malabarba, Luiz R.] Univ Fed Rio Grande do Sul, Dept Zool, BR-91501970 Porto Alegre, RS, Brazil. [Jerep, Fernando C.] Smithsonian Inst, Natl Museum Nat Hist, Dept Vertebrate Zool, Washington, DC 20560 USA. RP Malabarba, LR (reprint author), Univ Fed Rio Grande do Sul, Dept Zool, Av Paulo Gama S-No, BR-91501970 Porto Alegre, RS, Brazil. EM malabarb@ufrgs.br; fjerep@gmail.com RI Malabarba, Luiz/I-3225-2012; Jerep, Fernando/F-5274-2015 FU CNPq [479412/2008-1, 300705/2010-7]; Smithsonian Institution FX We are grateful to C. Lucena (MCP), J. Figueiredo and O. Oyakawa (MZUSP), P. Lucinda (UNT), and R. Vari and S. Weitzman (USNM) for the loan of specimens. This paper was improved with comments from R. Vari and J. Mirande. Financial support was provided by the CNPq (479412/2008-1; 300705/2010-7) to LRM and Smithsonian Institution to FCJ. NR 8 TC 2 Z9 2 U1 0 U2 1 PU AMER SOC ICHTHYOLOGISTS & HERPETOLOGISTS PI MIAMI PA MAUREEN DONNELLY, SECRETARY FLORIDA INT UNIV BIOLOGICAL SCIENCES, 11200 SW 8TH STREET, MIAMI, FL 33199 USA SN 0045-8511 J9 COPEIA JI Copeia PD JUN 27 PY 2012 IS 2 BP 243 EP 250 DI 10.1643/CI-11-143 PG 8 WC Zoology SC Zoology GA 967SS UT WOS:000305928700009 ER PT J AU Uchida, H Tsunemi, H Katsuda, S Mori, K Petre, R Yamaguchi, H AF Uchida, Hiroyuki Tsunemi, Hiroshi Katsuda, Satoru Mori, Koji Petre, Robert Yamaguchi, Hiroya TI A Suzaku Study of Ejecta Structure and Origin of Hard X-Ray Emission in the Supernova Remnant G 156.2+5.7 SO PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN LA English DT Article DE ISM: abundances; ISM: individual (G 156.2+5.7); ISM: supernova remnants; X-rays: ISM ID SNR G156.2+5.7; CYGNUS LOOP; ABUNDANCES; DISCOVERY; GALAXIES; ELEMENTS; BRIGHT AB We report on an X-ray study of the evolved Galactic supernova remnant (SNR) G 156.2+5.7 based on six pointing observations with Suzaku. The remnant's large extent (100' in diameter) allows us to investigate its radial structure in the northwestern and eastern directions from the apparent center. The X-ray spectra were well fit with a two-component non-equilibrium ionization model representing the swept-up interstellar medium (ISM) and the metal-rich ejecta. We found prominent central concentrations of Si, S, and Fe from the ejecta component; the lighter elements of 0, Ne, and Mg were distributed more uniformly. The temperature of the ISM component suggests a slow shock (similar to 610-960 km s(-1)); hence, the remnant's age is estimated to be similar to 7000-15000 yr, assuming its distance to be similar to 1.1 kpc. G 156.2+5.7 has also been thought to emit hard, non-thermal X-rays, despite being considerably older than any other such remnant. In response to a recent discovery of a background cluster of galaxies (2XMM J045637.2+522411), we carefully excluded its contribution, and reexamined the origin of the hard X-ray emission. We found that the residual hard X-ray emission is consistent with the expected level of the cosmic X-ray background. Thus, no robust evidence for non-thermal emission was obtained from G 156.2+5.7. These results are consistent with the picture of an evolved SNR. C1 [Uchida, Hiroyuki] Kyoto Univ, Grad Sch Sci, Dept Phys, Sakyo Ku, Kyoto 6068502, Japan. [Tsunemi, Hiroshi] Osaka Univ, Grad Sch Sci, Dept Earth & Space Sci, Toyonaka, Osaka 5600043, Japan. [Katsuda, Satoru] RIKEN, Wako, Saitama 3510198, Japan. [Mori, Koji] Miyazaki Univ, Fac Engn, Dept Appl Phys, Miyazaki 8892192, Japan. [Petre, Robert] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Yamaguchi, Hiroya] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Uchida, H (reprint author), Kyoto Univ, Grad Sch Sci, Dept Phys, Sakyo Ku, Kitashirakawa Oiwake Cho, Kyoto 6068502, Japan. EM uchida@cr.scphys.kyoto-u.ac.jp RI XRAY, SUZAKU/A-1808-2009 FU Japan Society for the Promotion of Science (JSPS); Ministry of Education, Culture, Sports, Science and Technology [23000004] FX HU is supported by Japan Society for the Promotion of Science (JSPS) Research Fellowship for Young Scientists. HY is supported by JSPS Research Fellowship for Research Abroad. The work is partially supported by a Grant-in-Aid from the Ministry of Education, Culture, Sports, Science and Technology (No.23000004). NR 31 TC 4 Z9 4 U1 0 U2 1 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0004-6264 EI 2053-051X J9 PUBL ASTRON SOC JPN JI Publ. Astron. Soc. Jpn. PD JUN 25 PY 2012 VL 64 IS 3 AR 61 DI 10.1093/pasj/64.3.61 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 966WN UT WOS:000305868200019 ER PT J AU Wilson, AS Marra, PP Fleischer, RC AF Wilson, Amy S. Marra, Peter P. Fleischer, Robert C. TI Temporal patterns of genetic diversity in Kirtland's warblers (Dendroica kirtlandii), the rarest songbird in North America SO BMC ECOLOGY LA English DT Article ID EFFECTIVE POPULATION-SIZE; MICROSATELLITE DNA MARKERS; GREATER PRAIRIE-CHICKENS; ALLELE FREQUENCY DATA; LINKAGE DISEQUILIBRIUM; OVERLAPPING GENERATIONS; COMPUTER-PROGRAM; BOTTLENECK; SOFTWARE; LOCI AB Background: Kirtland's warblers are the rarest songbird species in North America, rarity due in part to a reliance on early successional Jack Pine forests. Habitat loss due to fire suppression led to population declines to fewer than 200 males during the 1970s. Subsequent conservation management has allowed the species to recover to over 1700 males by 2010. In this study, we directly examine the impact that low population sizes have had on genetic variation in Kirtland's warblers. We compare the molecular variation of samples collected in Oscoda County, Michigan across three time periods: 1903-1912, 1929-1955 and 2008-2009. Results: In a hierarchical rarified sample of 20 genes and one time period, allelic richness was highest in 1903-1912 sample (A(R) = 5.96), followed by the 1929-1955 sample (A(R) = 5.74), and was lowest in the 2008-2009 sample (A(R) = 5.54). Heterozygosity measures were not different between the 1929-1955 and 2008-2009 samples, but were lower in the 1903-1912 sample. Under some models, a genetic bottleneck signature was present in the 1929-1955 and 2008-2009 samples but not in the 1903-1912 sample. Conclusions: We suggest that these temporal genetic patterns are the result of the declining Kirtland's warbler population compressing into available habitat and a consequence of existing at low numbers for several decades. C1 [Wilson, Amy S.; Marra, Peter P.] Smithsonian Conservat Biol Inst, Migratory Bird Ctr, Washington, DC 20008 USA. [Wilson, Amy S.; Fleischer, Robert C.] Smithsonian Conservat Biol Inst, Ctr Conservat & Evolutionary Genet, Washington, DC 20008 USA. RP Wilson, AS (reprint author), Smithsonian Conservat Biol Inst, Migratory Bird Ctr, 3001 Connecticut Ave NW, Washington, DC 20008 USA. EM asg.wilson@gmail.com FU Smithsonian Institution Postdoctoral Fellowship; George Didden Postdoctoral Fellowship from the Smithsonian Conservation Biology Institute, National Zoological Park; Center for Conservation and Evolutionary Genetics FX We thank the Museum of Zoology at the University of Michigan for the generous provisioning of historic samples and J. Hinshaw for providing access. We also thank Sarah Rockwell, Carol Bcetti and the Kirtland's warbler Recovery Team. F. Hailer and N. McInerny provided useful laboratory advice. Financial support was provided to A. Wilson by a Smithsonian Institution Postdoctoral Fellowship, and a George Didden Postdoctoral Fellowship from the Smithsonian Conservation Biology Institute, National Zoological Park. Funding for laboratory supplies was provided by the Center for Conservation and Evolutionary Genetics. NR 70 TC 5 Z9 6 U1 2 U2 40 PU BIOMED CENTRAL LTD PI LONDON PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND SN 1472-6785 J9 BMC ECOL JI BMC Ecol. PD JUN 22 PY 2012 VL 12 AR 8 DI 10.1186/1472-6785-12-8 PG 11 WC Ecology SC Environmental Sciences & Ecology GA 996HW UT WOS:000308076500001 PM 22726952 ER PT J AU Buchhave, LA Latham, DW Johansen, A Bizzarro, M Torres, G Rowe, JF Batalha, NM Borucki, WJ Brugamyer, E Caldwell, C Bryson, ST Ciardi, DR Cochran, WD Endl, M Esquerdo, GA Ford, EB Geary, JC Gilliland, RL Hansen, T Isaacson, H Laird, JB Lucas, PW Marcy, GW Morse, JA Robertson, P Shporer, A Stefanik, RP Still, M Quinn, SN AF Buchhave, Lars A. Latham, David W. Johansen, Anders Bizzarro, Martin Torres, Guillermo Rowe, Jason F. Batalha, Natalie M. Borucki, William J. Brugamyer, Erik Caldwell, Caroline Bryson, Stephen T. Ciardi, David R. Cochran, William D. Endl, Michael Esquerdo, Gilbert A. Ford, Eric B. Geary, John C. Gilliland, Ronald L. Hansen, Terese Isaacson, Howard Laird, John B. Lucas, Philip W. Marcy, Geoffrey W. Morse, Jon A. Robertson, Paul Shporer, Avi Stefanik, Robert P. Still, Martin Quinn, Samuel N. TI An abundance of small exoplanets around stars with a wide range of metallicities SO NATURE LA English DT Article ID PLANETESIMAL FORMATION; GIANT PLANETS; HOST STARS; MASS; PHOTOEVAPORATION; CANDIDATES; PARAMETERS; LIFETIMES; SEARCH; SYSTEM AB The abundance of heavy elements (metallicity) in the photospheres of stars similar to the Sun provides a 'fossil' record of the chemical composition of the initial protoplanetary disk. Metal-rich stars are much more likely to harbour gas giant planets(1-4), supporting the model that planets form by accumulation of dust and ice particles(5). Recent ground-based surveys suggest that this correlation is weakened for Neptunian-sized planets(4,6-9). However, how the relationship between size and metallicity extends into the regime of terrestrial-sized exoplanets is unknown. Here we report spectroscopic metallicities of the host stars of 226 small exoplanet candidates discovered by NASA's Kepler mission(10), including objects that are comparable in size to the terrestrial planets in the Solar System. We find that planets with radii less than four Earth radii form around host stars with a wide range of metallicities (but on average a metallicity close to that of the Sun), whereas large planets preferentially form around stars with higher metallicities. This observation suggests that terrestrial planets may be widespread in the disk of the Galaxy, with no special requirement of enhanced metallicity for their formation. C1 [Buchhave, Lars A.; Hansen, Terese] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark. [Buchhave, Lars A.; Bizzarro, Martin] Univ Copenhagen, Ctr Star & Planet Format, Nat Hist Museum Denmark, DK-1350 Copenhagen, Denmark. [Latham, David W.; Torres, Guillermo; Esquerdo, Gilbert A.; Geary, John C.; Stefanik, Robert P.; Quinn, Samuel N.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Johansen, Anders] Lund Univ, Lund Observ, S-22100 Lund, Sweden. [Rowe, Jason F.] NASA, SETI Inst, Ames Res Ctr, Moffett Field, CA 94035 USA. [Batalha, Natalie M.] San Jose State Univ, San Jose, CA 95192 USA. [Brugamyer, Erik; Caldwell, Caroline; Cochran, William D.; Endl, Michael; Robertson, Paul] Univ Texas Austin, Austin, TX 78712 USA. [Ciardi, David R.] CALTECH, NASA Exoplanet Sci Inst, Pasadena, CA 91109 USA. [Ford, Eric B.] Univ Florida, Bryant Space Sci Ctr 211, Gainesville, FL 32611 USA. [Gilliland, Ronald L.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Isaacson, Howard; Marcy, Geoffrey W.] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Laird, John B.] Bowling Green State Univ, Bowling Green, OH 43403 USA. [Lucas, Philip W.] Univ Hertfordshire, Ctr Astrophys, Hatfield AL10 9AB, Herts, England. [Morse, Jon A.] Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA. [Shporer, Avi] Las Cumbres Observ, Global Telescope Network, Goleta, CA 93117 USA. [Shporer, Avi] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. [Still, Martin] NASA, Bay Area Environm Res Inst, Ames Res Ctr, Moffett Field, CA 94035 USA. RP Buchhave, LA (reprint author), Univ Copenhagen, Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen, Denmark. EM buchhave@astro.ku.dk RI Bizzarro, Martin/I-8701-2012; OI Bizzarro, Martin/0000-0001-9966-2124; Buchhave, Lars A./0000-0003-1605-5666; Ciardi, David/0000-0002-5741-3047 FU NASA's Science Mission Directorate; Danish National Research Foundation; Carlsberg Foundation; European Research Council under ERC Starting Grant agreement [278675-PEBBLE2PLANET] FX The Kepler mission was competitively selected as the tenth NASA Discovery mission. Funding for this mission is provided by NASA's Science Mission Directorate. The Centre for Star and Planet Formation is funded by the Danish National Research Foundation. L. A. B. was funded by the Carlsberg Foundation. A.J. was partially funded by the European Research Council under ERC Starting Grant agreement 278675-PEBBLE2PLANET. NR 27 TC 207 Z9 208 U1 2 U2 25 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD JUN 21 PY 2012 VL 486 IS 7403 BP 375 EP 377 DI 10.1038/nature11121 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 961LV UT WOS:000305466800037 PM 22722196 ER PT J AU Rest, A Prieto, JL Walborn, NR Smith, N Bianco, FB Chornock, R Welch, DL Howell, DA Huber, ME Foley, RJ Fong, W Sinnott, B Bond, HE Smith, RC Toledo, I Minniti, D Mandel, K AF Rest, A. Prieto, J. L. Walborn, N. R. Smith, N. Bianco, F. B. Chornock, R. Welch, D. L. Howell, D. A. Huber, M. E. Foley, R. J. Fong, W. Sinnott, B. Bond, H. E. Smith, R. C. Toledo, I. Minniti, D. Mandel, K. TI The Great Eruption of eta Carinae reply SO NATURE LA English DT Letter ID ECHOES C1 [Rest, A.; Walborn, N. R.; Bond, H. E.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Prieto, J. L.] Carnegie Observ, Pasadena, CA 91101 USA. [Prieto, J. L.] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA. [Smith, N.] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. [Bianco, F. B.; Howell, D. A.] Global Telescope Network, Las Cumbres Observ, Goleta, CA 93117 USA. [Bianco, F. B.; Howell, D. A.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. [Chornock, R.; Foley, R. J.; Fong, W.; Mandel, K.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Welch, D. L.; Sinnott, B.] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada. [Huber, M. E.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. [Smith, R. C.] Cerro Tololo Interamer Observ, Natl Opt Astron Observ, La Serena, Chile. [Toledo, I.] ALMA, San Pedro De Atacama, Chile. [Minniti, D.] Pontificia Univ Catolica, Dept Astron & Astrophys, Santiago 22, Chile. [Mandel, K.] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2AZ, England. RP Rest, A (reprint author), Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA. EM arest@stsci.edu NR 5 TC 0 Z9 0 U1 0 U2 1 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD JUN 21 PY 2012 VL 486 IS 7403 BP E1 EP E2 DI 10.1038/nature11167 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 961LV UT WOS:000305466800002 ER PT J AU Pedersen, TM Gallegos, CL Nielsen, SL AF Pedersen, Troels Moller Gallegos, Charles L. Nielsen, Soren Laurentius TI Influence of near-bottom re-suspended sediment on benthic light availability SO ESTUARINE COASTAL AND SHELF SCIENCE LA English DT Article DE light attenuation; radiative transfer modeling; seagrass distribution; sediment organic content; turbidity ID EELGRASS ZOSTERA-MARINA; SUBMERSED AQUATIC VEGETATION; SEAGRASS DEPTH LIMITS; WATER-QUALITY; CHESAPEAKE BAY; HABITAT REQUIREMENTS; OPTICAL-PROPERTIES; EUTROPHICATION; ATTENUATION; LAGOON AB Increased light attenuation in the water column is a common consequence of the increased organic loading that accompanies anthropogenic eutrophication in coastal systems. Frequently, the best water quality correlate of the light attenuation coefficient is the total suspended solids, even in systems in which nutrient loading occurs primarily by groundwater input, that is, without strong river inputs of sediment. Alteration of bottom sediment texture, organic content, and bulk density by organic loading has been well documented. Here we report the effect of sediment re-suspension on near-bottom light attenuation using an array of in situ light sensors with very close spacing near the sediment-water interface and a radiative transfer (RT) modeling with the software "Hydrolight". We found that the light attenuation coefficient over 4.5 cm just above the bottom exceeded the attenuation found higher in the water column by a factor ranging from 1.6 to >30. RT modeling indicated that light received at the bottom could be overestimated by a factor 4 or more by extrapolating measurements not taking the near-bottom light attenuation into account. The results may help explain the wide range of seagrass light requirements observed in different systems. (C) 2012 Elsevier Ltd. All rights reserved. C1 [Pedersen, Troels Moller; Nielsen, Soren Laurentius] Roskilde Univ, Dept Environm Social & Spatial Change, DK-4000 Roskilde, Denmark. [Gallegos, Charles L.] Smithsonian Environm Res Ctr, Edgewater, MD 21037 USA. RP Nielsen, SL (reprint author), Roskilde Univ, Dept Environm Social & Spatial Change, POB 260, DK-4000 Roskilde, Denmark. EM nielsen@ruc.dk OI Gallegos, Charles/0000-0001-5112-0166; Nielsen, Soren Laurentius/0000-0003-4309-5153 FU Danish Strategic Research Council [2104-07-0011] FX IMP and SLN were supported by grant 2104-07-0011 (REEL-GRASS) from The Danish Strategic Research Council. This sponsor had no role in determining study design, collection or treatment of data, writing, or in the decision to submit to this journal. NR 46 TC 8 Z9 8 U1 2 U2 31 PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0272-7714 J9 ESTUAR COAST SHELF S JI Estuar. Coast. Shelf Sci. PD JUN 20 PY 2012 VL 106 BP 93 EP 101 DI 10.1016/j.ecss.2012.04.027 PG 9 WC Marine & Freshwater Biology; Oceanography SC Marine & Freshwater Biology; Oceanography GA 966UL UT WOS:000305862800010 ER PT J AU Robbins, RK Anderson, RA Sullivan, JB AF Robbins, Robert K. Anderson, Richard A. Sullivan, J. Bolling TI THE NICARAGUAN HAIRSTREAK BUTTERFLY FAUNA (THECLINAE: EUMAEINI), ITS BIOGEOGRAPHY, AND THE HISTORY OF NICARAGUAN COLLECTORS SO JOURNAL OF THE LEPIDOPTERISTS SOCIETY LA English DT Article DE Belt; Biogeography; Biologia Centrali Americana; Godman; Salvin ID PHYLOGENETIC ANALYSIS; LYCAENIDAE THECLINAE; LEPIDOPTERA; TAXONOMY AB The hairstreak butterfly fauna of Nicaragua has not been comprehensively updated since Godman and Salvin listed 71. species in the Biologia Centrali-Americana over a century ago. Based primarily on Eumaeini in the Anderson and Sullivan Collections (Smithsonian Institution), we treat 149 thecline species recorded from Nicaragua with their localities and months of capture. None are endemic to Nicaragua, but 15 species have the northern or southern limit of their known distribution in Nicaragua. We relate the distributions of these 15 species, many of which are figured, to the life zones and physical features of Nicaragua and adjoining countries. Those eumaeine names for which Nicaragua is a type locality are noted, and a few unresolved taxonomic problems among the Nicaraguan fauna are pointed out. We list another 73 hairstreak species that are recorded both to the northwest and southeast of Nicaragua, but not in Nicaragua. Finally, we present brief historical comments on the collectors of Nicaraguan hairstreaks. C1 [Robbins, Robert K.] Smithsonian Inst, Washington, DC 20013 USA. RP Robbins, RK (reprint author), Smithsonian Inst, POB 37012,NHB MRC 105, Washington, DC 20013 USA. EM RobbinsR@SI.edu; ragabry@tampabay.rr.com; sullivan14@earthlink.net NR 41 TC 3 Z9 3 U1 0 U2 6 PU LEPIDOPTERISTS SOC PI LOS ANGELES PA 900 EXPOSITION BLVD, LOS ANGELES, CA 90007-4057 USA SN 0024-0966 J9 J LEPID SOC JI J. Lepid. Soc. PD JUN 20 PY 2012 VL 66 IS 2 BP 61 EP 75 PG 15 WC Entomology SC Entomology GA 968ZL UT WOS:000306025400001 ER PT J AU Di Stefano, R AF Di Stefano, R. TI DISCOVERING HABITABLE EARTHS, HOT JUPITERS, AND OTHER CLOSE PLANETS WITH MICROLENSING SO ASTROPHYSICAL JOURNAL LA English DT Article DE Galaxy: general; gravitational lensing: micro; planets and satellites: detection; surveys ID PROPER MOTION STARS; MAGELLANIC CLOUDS; GALACTIC BULGE; SYSTEMS; EVENTS; CHANNEL; LENSES; FIELDS; LIGHT AB Searches for planets via gravitational lensing have focused on cases in which the projected separation, a, between planet and star is comparable to the Einstein radius, RE. This paper considers smaller orbital separations and demonstrates that evidence of close-orbit planets can be found in the low-magnification portion of the light curves generated by the central star. We develop a protocol for discovering hot Jupiters as well as Neptune-mass and Earth-mass planets in the stellar habitable zone. When planets are not discovered, our method can be used to quantify the probability that the lens star does not have planets within specified ranges of the orbital separation and mass ratio. Nearby close-orbit planets discovered by lensing can be subject to follow-up observations to study the newly discovered planets or to discover other planets orbiting the same star. Careful study of the low-magnification portions of lensing light curves should produce, in addition to the discoveries of close-orbit planets, definite detections of wide-orbit planets through the discovery of "repeating" lensing events. We show that events exhibiting extremely high magnification can effectively be probed for planets in close, intermediate, and wide distance regimes simply by adding several-time-per-night monitoring in the low-magnification wings, possibly leading to gravitational lensing discoveries of multiple planets occupying a broad range of orbits, from close to wide, in a single planetary system. C1 Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Di Stefano, R (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. FU NSF [AST-0908878] FX I thank Ann Esin and James Matthews for conversations and for help with the figures. This work was supported in part by NSF under grant AST-0908878. NR 28 TC 7 Z9 7 U1 0 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 20 PY 2012 VL 752 IS 2 AR 105 DI 10.1088/0004-637X/752/2/105 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 965AK UT WOS:000305738000028 ER PT J AU Foley, RJ Simon, JD Burns, CR Gal-Yam, A Hamuy, M Kirshner, RP Morrell, NI Phillips, MM Shields, GA Sternberg, A AF Foley, Ryan J. Simon, Joshua D. Burns, Christopher R. Gal-Yam, Avishay Hamuy, Mario Kirshner, Robert P. Morrell, Nidia I. Phillips, Mark M. Shields, Gregory A. Sternberg, Assaf TI LINKING TYPE Ia SUPERNOVA PROGENITORS AND THEIR RESULTING EXPLOSIONS SO ASTROPHYSICAL JOURNAL LA English DT Article DE distance scale; dust, extinction; supernovae: general ID DELAYED-DETONATION MODEL; DARK-ENERGY CONSTRAINTS; LIGHT CURVES; CIRCUMSTELLAR MATERIAL; INTERSTELLAR-MEDIUM; WHITE-DWARFS; SN 2011FE; SODIUM-ABSORPTION; HUBBLE DIAGRAM; TELESCOPE AB Comparing the ejecta velocities at maximum brightness and narrow circumstellar/interstellar Na D absorption line profiles of a sample of 23 Type Ia supernovae (SNe Ia), we determine that the properties of SN Ia progenitor systems and explosions are intimately connected. As demonstrated by Sternberg et al., half of all SNe Ia with detectable Na D absorption at the host-galaxy redshift in high-resolution spectroscopy have Na D line profiles with significant blueshifted absorption relative to the strongest absorption component, which indicates that a large fraction of SN Ia progenitor systems have strong outflows. In this study, we find that SNe Ia with blueshifted circumstellar/interstellar absorption systematically have higher ejecta velocities and redder colors at maximum brightness relative to the rest of the SN Ia population. This result is robust at a 98.9%-99.8% confidence level, providing the first link between the progenitor systems and properties of the explosion. This finding is further evidence that the outflow scenario is the correct interpretation of the blueshifted Na D absorption, adding additional confirmation that some SNe Ia are produced from a single-degenerate progenitor channel. An additional implication is that either SN Ia progenitor systems have highly asymmetric outflows that are also aligned with the SN explosion or SNe Ia come from a variety of progenitor systems where SNe Ia from systems with strong outflows tend to have more kinetic energy per unit mass than those from systems with weak or no outflows. C1 [Foley, Ryan J.; Kirshner, Robert P.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Simon, Joshua D.; Burns, Christopher R.] Observ Carnegie Inst Sci, Pasadena, CA 91101 USA. [Gal-Yam, Avishay] Weizmann Inst Sci, Fac Phys, Benoziyo Ctr Astrophys, IL-76100 Rehovot, Israel. [Hamuy, Mario] Univ Chile, Dept Astron, Santiago, Chile. [Morrell, Nidia I.; Phillips, Mark M.] Carnegie Observ, Las Campanas Observ, La Serena, Chile. [Shields, Gregory A.] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA. [Sternberg, Assaf] Max Planck Inst Astrophys, D-85741 Garching, Germany. RP Foley, RJ (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM rfoley@cfa.harvard.edu RI Hamuy, Mario/G-7541-2016; Horesh, Assaf/O-9873-2016 OI Horesh, Assaf/0000-0002-5936-1156 FU Clay Fellowship; ISF foundation; Minerva foundation; ARCHES award; Lord Sieff of Brimpton Fund; Minerva Fellowship; CONICYT [FONDECYT Regular 1060808, Centro de Astrofisica FONDAP 15010003, Centro BASAL CATA (PFB-06), Millenium Center for Supernova Science (P10-064-F)]; NSF [AST-0907903] FX R.J.F. is supported by a Clay Fellowship. A.G.Y is supported by grants from the ISF and Minerva foundations, an ARCHES award, and the Lord Sieff of Brimpton Fund. A.S. is supported by a Minerva Fellowship. M.H. acknowledges support by CONICYT through grants FONDECYT Regular 1060808, Centro de Astrofisica FONDAP 15010003, Centro BASAL CATA (PFB-06), and the Millenium Center for Supernova Science (P10-064-F). Supernova research at Harvard College Observatory is supported by NSF grant AST-0907903. NR 78 TC 52 Z9 52 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 20 PY 2012 VL 752 IS 2 AR 101 DI 10.1088/0004-637X/752/2/101 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 965AK UT WOS:000305738000024 ER PT J AU Johnson, LC Seth, AC Dalcanton, JJ Caldwell, N Fouesneau, M Gouliermis, DA Hodge, PW Larsen, SS Olsen, KAG San Roman, I Sarajedini, A Weisz, DR Williams, BF Beerman, LC Bianchi, L Dolphin, AE Girardi, L Guhathakurta, P Kalirai, J Lang, D Monachesi, A Nanda, S Rix, HW Skillman, ED AF Johnson, L. Clifton Seth, Anil C. Dalcanton, Julianne J. Caldwell, Nelson Fouesneau, Morgan Gouliermis, Dimitrios A. Hodge, Paul W. Larsen, Soren S. Olsen, Knut A. G. San Roman, Izaskun Sarajedini, Ata Weisz, Daniel R. Williams, Benjamin F. Beerman, Lori C. Bianchi, Luciana Dolphin, Andrew E. Girardi, Leo Guhathakurta, Puragra Kalirai, Jason Lang, Dustin Monachesi, Antonela Nanda, Sanjay Rix, Hans-Walter Skillman, Evan D. TI PHAT STELLAR CLUSTER SURVEY. I. YEAR 1 CATALOG AND INTEGRATED PHOTOMETRY SO ASTROPHYSICAL JOURNAL LA English DT Article DE catalogs; galaxies: individual (M31); galaxies: star clusters: general ID LARGE-MAGELLANIC-CLOUD; YOUNG STAR-CLUSTERS; ASYMPTOTIC GIANT BRANCH; GALACTIC OPEN CLUSTERS; SPACE-TELESCOPE SURVEY; M31 GLOBULAR-CLUSTERS; INITIAL MASS FUNCTION; LOCAL GROUP GALAXIES; LUMINOSITY FUNCTION; SPIRAL GALAXIES AB The Panchromatic Hubble Andromeda Treasury (PHAT) survey is an ongoing Hubble Space Telescope (HST) multi-cycle program to obtain high spatial resolution imaging of one-third of the M31 disk at ultraviolet through near-infrared wavelengths. In this paper, we present the first installment of the PHAT stellar cluster catalog. When completed, the PHAT cluster catalog will be among the largest and most comprehensive surveys of resolved star clusters in any galaxy. The exquisite spatial resolution achieved with HST has allowed us to identify hundreds of new clusters that were previously inaccessible with existing ground-based surveys. We identify 601 clusters in the Year 1 sample, representing more than a factor of four increase over previous catalogs within the current survey area (390 arcmin(2)). This work presents results derived from the first similar to 25% of the survey data; we estimate that the final sample will include similar to 2500 clusters. For the Year 1 objects, we present a catalog with positions, radii, and six-band integrated photometry. Along with a general characterization of the cluster luminosities and colors, we discuss the cluster luminosity function, the cluster size distributions, and highlight a number of individually interesting clusters found in the Year 1 search. C1 [Johnson, L. Clifton; Dalcanton, Julianne J.; Fouesneau, Morgan; Hodge, Paul W.; Weisz, Daniel R.; Williams, Benjamin F.; Beerman, Lori C.] Univ Washington, Dept Astron, Seattle, WA 98195 USA. [Seth, Anil C.] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA. [Caldwell, Nelson] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Gouliermis, Dimitrios A.] Univ Heidelberg, Zentrum Astron, Inst Theoret Astrophys, D-69120 Heidelberg, Germany. [Gouliermis, Dimitrios A.; Rix, Hans-Walter] Max Planck Inst Astron, D-69117 Heidelberg, Germany. [Larsen, Soren S.] Radboud Univ Nijmegen, IMAPP, Dept Astrophys, NL-6500 GL Nijmegen, Netherlands. [Olsen, Knut A. G.] Natl Opt Astron Observ, Tucson, AZ 85719 USA. [San Roman, Izaskun; Sarajedini, Ata] Univ Florida, Dept Astron, Gainesville, FL 32611 USA. [Bianchi, Luciana] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. [Dolphin, Andrew E.] Raytheon Co, Tucson, AZ 85756 USA. [Girardi, Leo] Osservatorio Astron Padova INAF, I-35122 Padua, Italy. [Guhathakurta, Puragra] Univ Calif Santa Cruz, Univ Calif Observ, Lick Observ, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA. [Kalirai, Jason] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Lang, Dustin] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA. [Monachesi, Antonela] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA. [Nanda, Sanjay] Indian Inst Technol, Kanpur 208016, Uttar Pradesh, India. [Skillman, Evan D.] Univ Minnesota, Dept Astron, Minneapolis, MN 55455 USA. RP Johnson, LC (reprint author), Univ Washington, Dept Astron, Box 351580, Seattle, WA 98195 USA. EM lcjohnso@astro.washington.edu OI Gouliermis, Dimitrios/0000-0002-2763-0075; Johnson, Lent/0000-0001-6421-0953 FU NASA from the Space Telescope Science Institute [HST-GO-12055]; NASA [NAS5-26555]; German Aerospace Center (DLR); German Research Foundation (DFG) [50 OR 0908, GO 1659/3-1] FX The authors acknowledge the collective efforts of the entire PHAT team in this project. Also, the authors thank the anonymous referee for a prompt and useful report. This research made extensive use of NASA's Astrophysics Data System Bibliographic Services. Support for this work was provided by NASA through grant number HST-GO-12055 from the Space Telescope Science Institute, which is operated by AURA, Inc., under NASA contract NAS5-26555. D.A.G. acknowledges financial support from the German Aerospace Center (DLR) and the German Research Foundation (DFG) through grants 50 OR 0908 and GO 1659/3-1, respectively. NR 84 TC 31 Z9 31 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 20 PY 2012 VL 752 IS 2 AR 95 DI 10.1088/0004-637X/752/2/95 PG 23 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 965AK UT WOS:000305738000018 ER PT J AU Ma, CJ Owers, M Nulsen, PEJ McNamara, BR Murray, SS Couch, WJ AF Ma, Cheng-Jiun Owers, Matt Nulsen, Paul E. J. McNamara, Brian R. Murray, Stephen S. Couch, Warrick J. TI ABELL 1201: A MINOR MERGER AT SECOND CORE PASSAGE SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: clusters: general; galaxies: clusters: individual (A1201) ID X-RAY DATA; COLD-FRONT; GALAXY CLUSTERS; HYDRA-A; GAS; CHANDRA; COMPILATION; TEMPERATURE; SAMPLE AB We present an analysis of the structures and dynamics of the merging cluster Abell 1201, which has two sloshing cold fronts around a cooling core, and an offset gas core approximately 500 kpc northwest of the center. New Chandra and XMM-Newton data reveal a region of enhanced brightness east of the offset core, with breaks in surface brightness along its boundary to the north and east. This is interpreted as a tail of gas stripped from the offset core. Gas in the offset core and the tail is distinguished from other gas at the same distance from the cluster center chiefly by having higher density, hence lower entropy. In addition, the offset core shows marginally lower temperature and metallicity than the surrounding area. The metallicity in the cool core is high and there is an abrupt drop in metallicity across the southern cold front. We interpret the observed properties of the system, including the placement of the cold fronts, the offset core, and its tail in terms of a simple merger scenario. The offset core is the remnant of a merging subcluster, which first passed pericenter southeast of the center of the primary cluster and is now close to its second pericenter passage, moving at similar or equal to 1000 km s(-1). Sloshing excited by the merger gave rise to the two cold fronts and the disposition of the cold fronts reveals that we view the merger from close to the plane of the orbit of the offset core. C1 [Ma, Cheng-Jiun; Nulsen, Paul E. J.; McNamara, Brian R.; Murray, Stephen S.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Ma, Cheng-Jiun; McNamara, Brian R.] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada. [Owers, Matt] Australian Astron Observ, Epping, NSW 1710, Australia. [Owers, Matt; Couch, Warrick J.] Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia. [McNamara, Brian R.] Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada. [Murray, Stephen S.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21205 USA. RP Ma, CJ (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. OI Owers, Matt/0000-0002-2879-1663; Nulsen, Paul/0000-0003-0297-4493 FU NASA [NAS8-03060, NNX08AD68G]; Chandra Large Project Grant [G09-0140X]; Australian Research Council FX This work was partly supported by NASA grants NAS8-03060 and NNX08AD68G. C.J.M. and B.R.M. are supported by Chandra Large Project Grant: G09-0140X. B. R. M. acknowledges generous support from the Natural Sciences and Engineering Research Council of Canada. M.S.O. and W.J.C. acknowledge the financial support of the Australian Research Council. We have made use of data obtained under the Chandra HRC GTO program and software provided by the Chandra X-ray Center (CXC) in the application packages CIAO, ChIPS, and Sherpa. STSDAS is a product of the Space Telescope Science Institute, which is operated by AURA for NASA. NR 38 TC 7 Z9 7 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUN 20 PY 2012 VL 752 IS 2 AR 139 DI 10.1088/0004-637X/752/2/139 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 965AK UT WOS:000305738000062 ER PT J AU Mainzer, A Grav, T Masiero, J Bauer, J McMillan, RS Giorgini, J Spahr, T Cutri, RM Tholen, DJ Jedicke, R Walker, R Wright, E Nugent, CR AF Mainzer, A. Grav, T. Masiero, J. Bauer, J. McMillan, R. S. Giorgini, J. Spahr, T. Cutri, R. M. Tholen, D. J. Jedicke, R. Walker, R. Wright, E. Nugent, C. R. TI CHARACTERIZING SUBPOPULATIONS WITHIN THE NEAR-EARTH OBJECTS WITH NEOWISE: PRELIMINARY RESULTS SO ASTROPHYSICAL JOURNAL LA English DT Article DE atlases; catalogs; minor planets, asteroids: general; surveys ID MAIN-BELT ASTEROIDS; INFRARED-SURVEY-EXPLORER; APOLLO-AMOR OBJECTS; WISE/NEOWISE OBSERVATIONS; APPROACHING ASTEROIDS; DYNAMICAL EVOLUTION; SIZE DISTRIBUTIONS; SUFFICIENT SOURCE; POPULATION; MAGNITUDE AB We present the preliminary results of an analysis of the sub-populations within the near-Earth asteroids, including the Atens, Apollos, Amors, and those that are considered potentially hazardous using data from the Wide-field Infrared Survey Explorer (WISE). In order to extrapolate the sample of objects detected by WISE to the greater population, we determined the survey biases for asteroids detected by the project's automated moving object processing system (known as NEOWISE) as a function of diameter, visible albedo, and orbital elements. Using this technique, we are able to place constraints on the number of potentially hazardous asteroids larger than 100 m and find that there are similar to 4700 +/- 1450 such objects. As expected, the Atens, Apollos, and Amors are revealed by WISE to have somewhat different albedo distributions, with the Atens being brighter than the Amors. The cumulative size distributions of the various near-Earth object (NEO) subgroups vary slightly between 100 m and 1 km. A comparison of the observed orbital elements of the various sub-populations of the NEOs with the current best model is shown. C1 [Mainzer, A.; Masiero, J.; Bauer, J.; Giorgini, J.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Grav, T.] Planetary Sci Inst, Tucson, AZ 85719 USA. [Bauer, J.; Cutri, R. M.] CALTECH, Ctr Infrared Proc & Anal, Pasadena, CA 91125 USA. [McMillan, R. S.] Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA. [Spahr, T.] Harvard Smithsonian Ctr Astrophys, Minor Planet Ctr, Cambridge, MA 02138 USA. [Tholen, D. J.; Jedicke, R.] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA. [Walker, R.] Monterey Inst Res Astron, Marina, CA 93933 USA. [Wright, E.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. [Nugent, C. R.] Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90095 USA. RP Mainzer, A (reprint author), CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA. EM amainzer@jpl.nasa.gov OI Masiero, Joseph/0000-0003-2638-720X FU National Aeronautics and Space Administration; Planetary Science Division of the National Aeronautics and Space Administration FX This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. This publication also makes use of data products from NEOWISE, which is a project of the Jet Propulsion Laboratory/California Institute of Technology, funded by the Planetary Science Division of the National Aeronautics and Space Administration. We thank our referee, Dr. Alan Harris of the Space Science Institute, for his helpful comments, which led to a number of new insights, in particular the suggestion to split the Amors by perihelion. We gratefully acknowledge the extraordinary services specific to NEOWISE contributed by the International Astronomical Union's Minor Planet Center, operated by the Harvard-Smithsonian Center for Astrophysics, and the Central Bureau for Astronomical Telegrams, operated by Harvard University. We also thank the worldwide community of dedicated amateur and professional astronomers devoted to minor planet follow-up observations. This research has made use of the NASA/IPAC Infrared Science Archive, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. NR 55 TC 24 Z9 24 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 20 PY 2012 VL 752 IS 2 AR 110 DI 10.1088/0004-637X/752/2/110 PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 965AK UT WOS:000305738000033 ER PT J AU Masiunas, LC Gutermuth, RA Pipher, JL Megeath, ST Myers, PC Allen, LE Kirk, HM Fazio, GG AF Masiunas, L. C. Gutermuth, R. A. Pipher, J. L. Megeath, S. T. Myers, P. C. Allen, L. E. Kirk, H. M. Fazio, G. G. TI A STRUCTURAL ANALYSIS OF STAR-FORMING REGION AFGL 490 SO ASTROPHYSICAL JOURNAL LA English DT Article DE infrared: stars; stars: formation; stars: pre-main sequence ID SPITZER-SPACE-TELESCOPE; YOUNG STELLAR CLUSTERS; MOLECULAR CLOUDS; SURFACE-DENSITY; C2D SURVEY; NEARBY; PHOTOMETRY; KILOPARSEC; EVOLUTION; MODELS AB We present Spitzer IRAC and MIPS observations of the star-forming region containing intermediate-mass young stellar object (YSO) AFGL 490. We supplement these data with near-IR Two Micron All Sky Survey photometry and with deep Simultaneous Quad Infrared Imaging Device observations off the central high-extinction region. We have more than doubled the known membership of this region to 57 Class I and 303 Class II YSOs via the combined 1-24 mu m photometric catalog derived from these data. We construct and analyze the minimum spanning tree of their projected positions, isolating one locally overdense cluster core containing 219 YSOs (60.8% of the region's members). We find this cluster core to be larger yet less dense than similarly analyzed clusters. Although the structure of this cluster core appears irregular, we demonstrate that the parsec-scale surface densities of both YSOs and gas are correlated with a power-law slope of 2.8, as found for other similarly analyzed nearby molecular clouds. We also explore the mass segregation implications of AFGL 490's offset from the center of its core, finding that it has no apparent preferential central position relative to the low-mass members. C1 [Masiunas, L. C.] Smith Coll, Coll Astron Dept 5, Northampton, MA 01063 USA. [Gutermuth, R. A.] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA. [Pipher, J. L.] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA. [Megeath, S. T.] Univ Toledo, Dept Phys & Astron, Toledo, OH 43606 USA. [Myers, P. C.; Kirk, H. M.; Fazio, G. G.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Allen, L. E.] Natl Opt Astron Observ, Tucson, AZ 85726 USA. RP Masiunas, LC (reprint author), Smith Coll, Coll Astron Dept 5, Northampton, MA 01063 USA. FU National Aeronautics and Space Administration; National Science Foundation; NASA [1407, NNX11AD14G]; NASA through JPL [960541]; Smith College Summer Research Fellows (SURF) Program; Massachusetts Space Grant Consortium; Five College Astronomy Department FX This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France. This research has made use of the VizieR catalog access tool, CDS, Strasbourg, France. This work is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under a contract 1407 with NASA. Support for the IRAC instrument was provided by NASA through contract 960541 issued by JPL. R. A. G. gratefully acknowledges support from NASA grant NNX11AD14G. L. C. M. wishes to acknowledge funding support from the Smith College Summer Research Fellows (SURF) Program, the Massachusetts Space Grant Consortium, and the Five College Astronomy Department. NR 33 TC 10 Z9 10 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 20 PY 2012 VL 752 IS 2 AR 127 DI 10.1088/0004-637X/752/2/127 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 965AK UT WOS:000305738000050 ER PT J AU Newman, SF Griffin, KS Genzel, R Davies, R Forster-Schreiber, NM Tacconi, LJ Kurk, J Wuyts, S Genel, S Lilly, SJ Renzini, A Bouche, N Burkert, A Cresci, G Buschkamp, P Carollo, CM Eisenhauer, F Hicks, E Lutz, D Mancini, C Naab, T Peng, YJ Vergani, D AF Newman, Sarah F. Griffin, Kristen Shapiro Genzel, Reinhard Davies, Ric Foerster-Schreiber, Natascha M. Tacconi, Linda J. Kurk, Jaron Wuyts, Stijn Genel, Shy Lilly, Simon J. Renzini, Alvio Bouche, Nicolas Burkert, Andreas Cresci, Giovanni Buschkamp, Peter Carollo, C. Marcella Eisenhauer, Frank Hicks, Erin Lutz, Dieter Mancini, Chiara Naab, Thorsten Peng, Yingjie Vergani, Daniela TI SHOCKED SUPERWINDS FROM THE z similar to 2 CLUMPY STAR-FORMING GALAXY, ZC406690 SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: evolution; galaxies: high-redshift; galaxies: star formation; ISM: jets and outflows ID INTEGRAL FIELD SPECTROSCOPY; LYMAN-BREAK GALAXIES; GIANT MOLECULAR CLOUDS; ULTRA DEEP FIELD; INFRARED LUMINOSITY FUNCTIONS; LOW-METALLICITY GALAXIES; DATA REDUCTION SOFTWARE; TULLY-FISHER RELATION; H-ALPHA EMISSION; HIGH-REDSHIFT AB We have obtained high-resolution data of the z similar to 2 ring-like, clumpy star-forming galaxy (SFG) ZC406690 using the VLT/SINFONI with adaptive optics (in K band) and in seeing-limited mode (in H and J bands). Our data include all of the main strong optical emission lines: [O II], [O III], H alpha, H beta, [N II], and [S II]. We find broad, blueshifted H alpha and [O III] emission line wings in the spectra of the galaxy's massive, star-forming clumps (sigma similar to 85 km s(-1)) and even broader wings (up to 70% of the total Ha flux, with s similar to 290 km s(-1)) in regions spatially offset from the clumps by similar to 2 kpc. The broad emission likely originates from large-scale outflows with mass outflow rates from individual clumps that are 1-8x the star formation rate (SFR) of the clumps. Based on emission line ratio diagnostics ([N II]/H alpha and [S II]/H alpha) and photoionization and shock models, we find that the emission from the clumps is due to a combination of photoionization from the star-forming regions and shocks generated in the outflowing component, with 5%-30% of the emission deriving from shocks. In terms of the ionization parameter (6x10(7) to 10(8) cm s(-1), based on both the SFR and the O-32 ratio), density (local electron densities of 300-1800 cm(-3) in and around the clumps, and ionized gas column densities of 1200-8000 M(circle dot)pc(-2)), and SFR (10-40 M-circle dot yr(-1)), these clumps more closely resemble nuclear starburst regions of local ultraluminous infrared galaxies and dwarf irregulars than H II regions in local galaxies. However, the star-forming clumps are not located in the nucleus as in local starburst galaxies but instead are situated in a ring several kpc from the center of their high-redshift host galaxy, and have an overall disk-like morphology. The two brightest clumps are quite different in terms of their internal properties, energetics, and relative ages, and thus we are given a glimpse at two different stages in the formation and evolution of rapidly star-forming giant clumps at high-z. C1 [Newman, Sarah F.; Genzel, Reinhard] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Griffin, Kristen Shapiro] Northrop Grumman Aerosp Syst, Aerosp Res Labs, Redondo Beach, CA 90278 USA. [Genzel, Reinhard; Davies, Ric; Foerster-Schreiber, Natascha M.; Tacconi, Linda J.; Kurk, Jaron; Wuyts, Stijn; Genel, Shy; Buschkamp, Peter; Eisenhauer, Frank; Lutz, Dieter] Max Planck Inst Extraterr Physik MPE, D-85748 Garching, Germany. [Genzel, Reinhard] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Genel, Shy] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Lilly, Simon J.; Carollo, C. Marcella; Peng, Yingjie] ETH, Dept Phys, Inst Astron, CH-8093 Zurich, Switzerland. [Renzini, Alvio; Mancini, Chiara] Osserv Astron Padova, I-35122 Padua, Italy. [Bouche, Nicolas] Univ Calif Santa Barbara, Dept Phys & Astron, Santa Barbara, CA 93106 USA. [Burkert, Andreas] Univ Sternwarte Ludwig Maximilians Univ USM, Dept Phys, D-81679 Munich, Germany. [Cresci, Giovanni] Osserv Astrofis Arcetri, Ist Nazl Astrofis, I-50125 Florence, Italy. [Hicks, Erin] Univ Washington, Dept Astron, Seattle, WA 98195 USA. [Naab, Thorsten] Max Planck Inst Astrophys, D-85748 Garching, Germany. [Vergani, Daniela] INAF Osservatorio Astron Bologna, I-40127 Bologna, Italy. RP Newman, SF (reprint author), Univ Calif Berkeley, Dept Astron, Campbell Hall, Berkeley, CA 94720 USA. EM sfnewman@berkeley.edu OI Vergani, Daniela/0000-0003-0898-2216; Genel, Shy/0000-0002-3185-1540; Cresci, Giovanni/0000-0002-5281-1417 FU NSF; ASI; INAF FX We thank the ESO staff, especially those at Paranal Observatory, for their ongoing support during the many past and continuing observing runs over which the SINS project is being carried out. We also acknowledge the SINFONI and PARSEC teams, whose devoted work on the instrument and laser paved the way for the success of the SINS observations. We also thank Mike Dopita and Emily Levesque for sharing the data from their photoionization and shock models and for useful discussions regarding those models. We also thank Sylvain Veilleux, Amiel Sternberg, and Eliot Quataert for helpful conversations concerning this work. S.F.N. is supported by an NSF grfp grant. C. M., A. R., and D. V. acknowledge partial support by the ASI grant "COFIS-Analisi Dati" and by the INAF grant "PRIN-2008." NR 120 TC 41 Z9 41 U1 1 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 20 PY 2012 VL 752 IS 2 AR 111 DI 10.1088/0004-637X/752/2/111 PG 19 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 965AK UT WOS:000305738000034 ER PT J AU Prescott, MKM Dey, A Brodwin, M Chaffee, FH Desai, V Eisenhardt, P Floc'h, E Jannuzi, BT Kashikawa, N Matsuda, Y Soifer, BT AF Prescott, Moire K. M. Dey, Arjun Brodwin, Mark Chaffee, Frederic H. Desai, Vandana Eisenhardt, Peter Le Floc'h, Emeric Jannuzi, Buell T. Kashikawa, Nobunari Matsuda, Yuichi Soifer, B. T. TI RESOLVING THE GALAXIES WITHIN A GIANT Ly alpha NEBULA: WITNESSING THE FORMATION OF A GALAXY GROUP? SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: evolution; galaxies: formation; galaxies: high-redshift ID STAR-FORMING GALAXIES; SPITZER-SPACE-TELESCOPE; ULTRA DEEP FIELD; EQUAL-TO 2.3; HIGH-REDSHIFT; COLD ACCRETION; COLLAPSING PROTOGALAXIES; STELLAR POPULATIONS; COOLING RADIATION; SPIDERWEB GALAXY AB Detailed analysis of the substructure of Ly alpha nebulae can put important constraints on the physical mechanisms at work and the properties of galaxies forming within them. Using high-resolution Hubble Space Telescope (HST) imaging of a Ly alpha nebula at z approximate to 2.656, we have taken a census of the compact galaxies in the vicinity, used optical/near-infrared colors to select system members, and put constraints on the morphology of the spatially extended emission. The system is characterized by (1) a population of compact, low-luminosity (similar to 0.1 L*) sources-17 primarily young, small (R-e approximate to 1-2 kpc), disky galaxies including an obscured active galactic nucleus-that are all substantially offset (greater than or similar to 20 kpc) from the line-emitting nebula; (2) the lack of a central galaxy at or near the peak of the Ly alpha emission; and (3) several nearly coincident, spatially extended emission components-Ly alpha, He II, and UV continuum-that are extremely smooth. These morphological findings are difficult to reconcile with theoretical models that invoke outflows, cold flows, or resonant scattering, suggesting that while all of these physical phenomena may be occurring, they are not sufficient to explain the powering and large extent of Ly alpha nebulae. In addition, although the compact galaxies within the system are irrelevant as power sources, the region is significantly overdense relative to the field galaxy population (by at least a factor of four). These observations provide the first estimate of the luminosity function of galaxies within an individual Ly alpha nebula system and suggest that large Ly alpha nebulae may be the seeds of galaxy groups or low-mass clusters. C1 [Prescott, Moire K. M.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. [Prescott, Moire K. M.] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. [Dey, Arjun; Jannuzi, Buell T.] Natl Opt Astron Observ, Tucson, AZ 85719 USA. [Brodwin, Mark] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Brodwin, Mark] Univ Missouri, Dept Phys, Kansas City, MO 64110 USA. [Chaffee, Frederic H.] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA. [Desai, Vandana; Soifer, B. T.] CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA. [Eisenhardt, Peter] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Le Floc'h, Emeric] Univ Paris, CNRS, DSM, Lab AIM,CEA, F-91191 Gif Sur Yvette, France. [Kashikawa, Nobunari] Natl Inst Nat Sci, Natl Astron Observ Japan, Div Opt & Infrared Astron, Mitaka, Tokyo 1818588, Japan. [Matsuda, Yuichi] Univ Durham, Dept Phys, Durham DH1 3LE, England. [Soifer, B. T.] CALTECH, Caltech Opt Observ, Pasadena, CA 91125 USA. EM mkpresco@physics.ucsb.edu FU NSF Graduate Research Fellowship; P.E.O. Fellowship; TABASGO Prize Postdoctoral Fellowship; NASA [NAS 5-26555]; NOAO; Spitzer Space Telescope project FX The authors thank Kate Brand, Galina Soutchkova, and Sangeeta Malhotra for their assistance with the HST observation planning and execution. We are grateful to Crystal Martin, Kristian Finlator, Avi Loeb, Dan Weedman, Tommaso Treu, Matt Auger, and the anonymous referee for useful discussions and suggestions. M.K. M.P. acknowledges support from an NSF Graduate Research Fellowship, a P.E.O. Fellowship, and a TABASGO Prize Postdoctoral Fellowship. This work was based on observations made with the NASA/ESA Hubble Space Telescope (HST Cycle 14; GO# 10591), obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. This work is also based in part on data collected at the Subaru Telescope, which is operated by the National Astronomical Observatory of Japan, and on data from the NOAO Deep Wide-Field Survey (B. Jannuzi, A. Dey) as distributed by the NOAO Science Archive. A.D. and B.T.J.'s research activities are supported by NOAO. NOAO is operated by the Association of Universities for Research in Astronomy (AURA), Inc. under a cooperative agreement with the National Science Foundation. V.D. and B.T.S. are supported by the Spitzer Space Telescope project, which is managed by JPL on behalf of NASA. NR 81 TC 26 Z9 26 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 20 PY 2012 VL 752 IS 2 AR 86 DI 10.1088/0004-637X/752/2/86 PG 25 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 965AK UT WOS:000305738000009 ER PT J AU Soderberg, AM Margutti, R Zauderer, BA Krauss, M Katz, B Chomiuk, L Dittmann, JA Nakar, E Sakamoto, T Kawai, N Hurley, K Barthelmy, S Toizumi, T Morii, M Chevalier, RA Gurwell, M Petitpas, G Rupen, M Alexander, KD Levesque, EM Fransson, C Brunthaler, A Bietenholz, MF Chugai, N Grindlay, J Copete, A Connaughton, V Briggs, M Meegan, C von Kienlin, A Zhang, X Rau, A Golenetskii, S Mazets, E Cline, T AF Soderberg, A. M. Margutti, R. Zauderer, B. A. Krauss, M. Katz, B. Chomiuk, L. Dittmann, J. A. Nakar, E. Sakamoto, T. Kawai, N. Hurley, K. Barthelmy, S. Toizumi, T. Morii, M. Chevalier, R. A. Gurwell, M. Petitpas, G. Rupen, M. Alexander, K. D. Levesque, E. M. Fransson, C. Brunthaler, A. Bietenholz, M. F. Chugai, N. Grindlay, J. Copete, A. Connaughton, V. Briggs, M. Meegan, C. von Kienlin, A. Zhang, X. Rau, A. Golenetskii, S. Mazets, E. Cline, T. TI PANCHROMATIC OBSERVATIONS OF SN 2011dh POINT TO A COMPACT PROGENITOR STAR SO ASTROPHYSICAL JOURNAL LA English DT Article DE supernovae: individual (SN 2011dh) ID CORE-COLLAPSE SUPERNOVAE; WOLF-RAYET STARS; SHOCK BREAKOUT; YELLOW SUPERGIANTS; RADIO SUPERNOVAE; SPIRAL GALAXIES; IIB SUPERNOVA; LIGHT CURVES; MASS-LOSS; 1993J AB We report the discovery and detailed monitoring of X-ray emission associated with the Type IIb SN 2011dh using data from the Swift and Chandra satellites, placing it among the best-studied X-ray supernovae (SNe) to date. We further present millimeter and radio data obtained with the Submillimeter Array, the Combined Array for Research in Millimeter-wave Astronomy, and the Expanded Very Large Array during the first three weeks after explosion. Combining these observations with early optical photometry, we show that the panchromatic data set is well described by non-thermal synchrotron emission (radio/mm) with inverse Compton scattering (X-ray) of a thermal population of optical photons. In this scenario, the shock partition fractions deviate from equipartition by a factor, (epsilon(e)/epsilon(B)) similar to 30. We derive the properties of the shock wave and the circumstellar environment and find a time-averaged shock velocity of (v) over bar approximate to 0.1c and a progenitor mass-loss rate of (M) over dot approximate to 6x10(-5) M-circle dot yr(-1) (for an assumed wind velocity, v(w) = 1000 km s(-1)). We show that these properties are consistent with the sub-class of Type IIb SNe characterized by compact progenitors (Type cIIb) and dissimilar from those with extended progenitors (Type eIIb). Furthermore, we consider the early optical emission in the context of a cooling envelope model to estimate a progenitor radius of R-* approximate to 10(11) cm, in line with the expectations for a Type cIIb SN. Together, these diagnostics are difficult to reconcile with the extended radius of the putative yellow supergiant progenitor star identified in archival Hubble Space Telescope observations, unless the stellar density profile is unusual. Finally, we searched for the high-energy shock breakout pulse using X-ray and gamma-ray observations obtained during the purported explosion date range. Based on the compact radius of the progenitor, we estimate that the shock breakout pulse was detectable with current instruments but likely missed due to their limited temporal/spatial coverage. Future all-sky missions will regularly detect shock breakout emission from compact SN progenitors enabling prompt follow-up observations with sensitive multi-wavelength facilities. C1 [Soderberg, A. M.; Margutti, R.; Zauderer, B. A.; Chomiuk, L.; Dittmann, J. A.; Gurwell, M.; Petitpas, G.; Alexander, K. D.; Grindlay, J.; Copete, A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Krauss, M.; Chomiuk, L.; Rupen, M.] Natl Radio Astron Observ, Socorro, NM 87801 USA. [Katz, B.] Inst Adv Study, Sch Nat Sci, Princeton, NJ 08540 USA. [Nakar, E.] Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, IL-69978 Tel Aviv, Israel. [Sakamoto, T.] NASA, Goddard Space Flight Ctr, CRESST, Greenbelt, MD 20771 USA. [Sakamoto, T.] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA. [Kawai, N.; Toizumi, T.; Morii, M.] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan. [Hurley, K.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA. [Chevalier, R. A.] Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA. [Levesque, E. M.] Univ Colorado 389 UCB, Dept Astrophys & Planetary Sci, CASA, Boulder, CO 80309 USA. [Fransson, C.] Stockholm Univ, Oskar Klein Ctr, Dept Astron, S-10691 Stockholm, Sweden. [Brunthaler, A.; von Kienlin, A.; Zhang, X.; Rau, A.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. [Bietenholz, M. F.] York Univ, Dept Phys & Astron, N York, ON M3J 1P3, Canada. [Bietenholz, M. F.] Hartebeesthoek Radio Observ, ZA-1740 Krugersdorp, South Africa. [Chugai, N.] RAS, Inst Astron, Moscow 11917, Russia. [Connaughton, V.; Briggs, M.] Univ Alabama, Dept Phys, Huntsville, AL 35809 USA. [Meegan, C.] NSSTC, Univ Space Res Assoc, Huntsville, AL 35805 USA. [Golenetskii, S.; Mazets, E.] Russian Acad Sci, Ioffe Phys Tech Inst, St Petersburg 194021, Russia. RP Soderberg, AM (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. RI Golenetskii, Sergey/B-3818-2015; OI Alexander, Kate/0000-0002-8297-2473 FU NASA [NNX10AI23G, NNX09AU03G, NNX07AR71G, NNX10AR12G, NAS8-03060]; NASA through Chandra X-ray Center; Gordon and Betty Moore Foundation; Kenneth T. and Eileen L. Norris Foundation; James S. McDonnell Foundation; Associates of the California Institute of Technology; University of Chicago; state of California; state of Maryland; National Science Foundation; CARMA partner universities; Smithsonian Institution; Academia Sinica; state of Illinois FX We thank Philip Massey, Edo Berger, Ryan Foley, Maria Drout, and Robert Kirshner for useful conversations. K.H. is grateful for IPN support from NASA grants NNX10AI23G, NNX09AU03G, NNX07AR71G, and NNX10AR12G. B.K. and E. M. L. are supported by NASA through Einstein Postdoctoral Fellowship awarded by the Chandra X-ray Center, which is operated by the Smithsonian Astrophysical Observatory for NASA under contract NAS8-03060. Support for CARMA construction was derived from the Gordon and Betty Moore Foundation, the Kenneth T. and Eileen L. Norris Foundation, the James S. McDonnell Foundation, the Associates of the California Institute of Technology, the University of Chicago, the states of California, Illinois, and Maryland, and the National Science Foundation. Ongoing CARMA development and operations are supported by the National Science Foundation under a cooperative agreement, and by the CARMA partner universities. The SMA is a joint project between the Smithsonian Astrophysical Observatory and the Academia Sinica Institute of Astronomy and Astrophysics, and is funded by the Smithsonian Institution and the Academia Sinica. The EVLA is operated by the National Radio Astronomy Observatory, a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. NR 72 TC 44 Z9 44 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUN 20 PY 2012 VL 752 IS 2 AR 78 DI 10.1088/0004-637X/752/2/78 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 965AK UT WOS:000305738000001 ER PT J AU Wagg, J Pope, A Alberts, S Armus, L Brodwin, M Bussmann, RS Desai, V Dey, A Jannuzi, B Le Floc'h, E Melbourne, J Stern, D AF Wagg, Jeff Pope, Alexandra Alberts, Stacey Armus, Lee Brodwin, Mark Bussmann, Robert S. Desai, Vandana Dey, Arjun Jannuzi, Buell Le Floc'h, Emeric Melbourne, Jason Stern, Daniel TI CO J=2-1 LINE EMISSION IN CLUSTER GALAXIES AT z similar to 1: FUELING STAR FORMATION IN DENSE ENVIRONMENTS SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: clusters: general; galaxies: evolution; galaxies: formation; ISM: molecules ID ACTIVE GALACTIC NUCLEI; DUST-OBSCURED GALAXIES; MASSIVE DISK GALAXIES; QUASAR HOST GALAXIES; IRAC SHALLOW SURVEY; WIDE-FIELD SURVEY; MOLECULAR GAS; SUBMILLIMETER GALAXIES; FORMING GALAXIES; REDSHIFT SURVEY AB We present observations of CO J = 2-1 line emission in infrared-luminous cluster galaxies at z similar to 1 using the IRAM Plateau de Bure Interferometer. Our two primary targets are optically faint, dust-obscured galaxies (DOGs) found to lie within 2 Mpc of the centers of two massive (> 10(14) M-circle dot) galaxy clusters. CO line emission is not detected in either DOG. We calculate 3 sigma upper limits to the CO J = 2-1 line luminosities, L'(CO) < 6.08 x 10(9) and <6.63 x 10(9) K km s(-1) pc(2). Assuming a CO-to-H-2 conversion factor derived for ultraluminous infrared galaxies in the local universe, this translates to limits on the cold molecular gasmass of M-H2 < 4.86 x 10(9) M-circle dot and M-H2 < 5.30 x 10(9) M-circle dot. Both DOGs exhibit mid-infrared continuum emission that follows a power law, suggesting that an active galactic nucleus (AGN) contributes to the dust heating. As such, estimates of the star formation efficiencies in these DOGs are uncertain. A third cluster member with an infrared luminosity, L-IR < 7.4 x 10(11) L-circle dot, is serendipitously detected in CO J = 2-1 line emission in the field of one of the DOGs located roughly two virial radii away from the cluster center. The optical spectrum of this object suggests that it is likely an obscured AGN, and the measured CO line luminosity is L'(CO) = (1.94 +/- 0.35) x 10(10) K km s(-1) pc(2), which leads to an estimated cold molecular gas mass M-H2 = (1.55 +/- 0.28) x 10(10) M-circle dot. A significant reservoir of molecular gas in a z similar to 1 galaxy located away from the cluster center demonstrates that the fuel can exist to drive an increase in star formation and AGN activity at the outskirts of high-redshift clusters. C1 [Wagg, Jeff] European So Observ, Santiago 19, Chile. [Pope, Alexandra; Alberts, Stacey] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA. [Armus, Lee; Desai, Vandana] CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA. [Brodwin, Mark] Univ Missouri, Dept Phys, Kansas City, MO 64110 USA. [Bussmann, Robert S.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Dey, Arjun; Jannuzi, Buell] Natl Opt Astron Observ, Tucson, AZ 85726 USA. [Le Floc'h, Emeric] Univ Paris Diderot, CNRS, AIM, CEA Saclay, F-91191 Gif Sur Yvette, France. [Stern, Daniel] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. RP Wagg, J (reprint author), European So Observ, Casilla 19001, Santiago 19, Chile. EM jwagg@eso.org FU Marie Curie Actions of the European Commission (FP7-COFUND); W. M. Keck Foundation; NASA FX We thank Jan-Martin Winters, Melanie Krips, and Roberto Neri for their helpful advice and guidance with the data analysis. For their contributions to this survey, we thank Anthony Gonzalez and Thomas Soifer, as well as Adam Stanford for the LRIS spectrum. This work was co-funded under the Marie Curie Actions of the European Commission (FP7-COFUND). Some of the data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. Part of this work is based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Support for this work was provided by NASA. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. NR 54 TC 6 Z9 6 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 20 PY 2012 VL 752 IS 2 AR 91 DI 10.1088/0004-637X/752/2/91 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 965AK UT WOS:000305738000014 ER PT J AU Wang, T Huang, JS Faber, SM Fang, GW Wuyts, S Fazio, GG Yan, HJ Dekel, A Guo, YC Ferguson, HC Grogin, N Lotz, JM Weiner, B McGrath, EJ Kocevski, D Hathi, NP Lucas, RA Koekemoer, AM Kong, X Gu, QS AF Wang, Tao Huang, Jia-Sheng Faber, S. M. Fang, Guanwen Wuyts, Stijn Fazio, G. G. Yan, Haojing Dekel, Avishai Guo, Yicheng Ferguson, Henry C. Grogin, Norman Lotz, Jennifer M. Weiner, Benjamin McGrath, Elizabeth J. Kocevski, Dale Hathi, Nimish P. Lucas, Ray A. Koekemoer, A. M. Kong, Xu Gu, Qiu-Sheng TI CANDELS: CORRELATIONS OF SPECTRAL ENERGY DISTRIBUTIONS AND MORPHOLOGIES WITH STAR FORMATION STATUS FOR MASSIVE GALAXIES AT z similar to 2 SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: evolution; galaxies: formation; galaxies: high-redshift; galaxies: structure ID HUBBLE-SPACE-TELESCOPE; EXTREMELY RED OBJECTS; DEEP FIELD-SOUTH; HIGH-REDSHIFT GALAXIES; INFRARED SPECTROSCOPIC SURVEY; STELLAR POPULATION SYNTHESIS; PASSIVELY EVOLVING GALAXIES; EXTRAGALACTIC LEGACY SURVEY; COMPACT QUIESCENT GALAXIES; K-SELECTED GALAXIES AB We present a study on spectral energy distributions, morphologies, and star formation for an IRAC-selected extremely red object sample in the GOODS Chandra Deep Field-South. This work was enabled by new HST/WFC3 near-IR imaging from the CANDELS survey as well as the deepest available X-ray data from Chandra 4 Ms observations. This sample consists of 133 objects with the 3.6 mu m limiting magnitude of [3.6] = 21.5 and is approximately complete for galaxies with M-* > 10(11) M-circle dot at 1.5 <= z <= 2.5. We classify this sample into two types, quiescent and star-forming galaxies (SFGs), in the observed infrared color-color ([3.6]-[24] versus K - [3.6]) diagram. The further morphological study of this sample shows a consistent result with the observed color classification. The classified quiescent galaxies are bulge dominated and SFGs in the sample have disk or irregular morphologies. Our observed infrared color classification is also consistent with the rest-frame color (U - V versus V - J) classification. We also found that quiescent and SFGs are well separated in the nonparametric morphology parameter (Gini versus M-20) diagram measuring their concentration and clumpiness: quiescent galaxies have a Gini coefficient higher than 0.58 and SFGs have a Gini coefficient lower than 0.58. We argue that the star formation quenching process must lead to or be accompanied by the increasing galaxy concentration. One prominent morphological feature of this sample is that disks are commonly seen in this massive galaxy sample at 1.5 <= z <= 2.5: 30% of quiescent galaxies and 70% of SFGs withM(*) > 10(11) M-circle dot have disks in their rest-frame optical morphologies. The prevalence of these extended, relatively undisturbed disks challenges the merging scenario as the main mode of massive galaxy formation. C1 [Wang, Tao; Gu, Qiu-Sheng] Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China. [Wang, Tao; Huang, Jia-Sheng; Fang, Guanwen; Fazio, G. G.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Faber, S. M.; McGrath, Elizabeth J.; Kocevski, Dale] Univ Calif Santa Cruz, Lick Observ, Univ Calif Observ, Santa Cruz, CA 95064 USA. [Fang, Guanwen; Kong, Xu] Univ Sci & Technol China, Ctr Astrophys, Hefei 230026, Peoples R China. [Wuyts, Stijn] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. [Yan, Haojing] Univ Missouri, Dept Phys & Astron, Columbia, MO 65211 USA. [Dekel, Avishai] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel. [Guo, Yicheng] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA. [Ferguson, Henry C.; Grogin, Norman; Lotz, Jennifer M.; Lucas, Ray A.; Koekemoer, A. M.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Weiner, Benjamin] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. [Hathi, Nimish P.] Carnegie Observ, Pasadena, CA 91101 USA. RP Wang, T (reprint author), Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China. EM taowang@nju.edu.cn RI Hathi, Nimish/J-7092-2014; OI Hathi, Nimish/0000-0001-6145-5090; Koekemoer, Anton/0000-0002-6610-2048 FU NASA [NAS5-26555]; National Natural Science Foundation of China [11133001, 10878010, 10873012]; National Basic Research Program (973 program) [2007CB815404, 2007CB815405] FX This work is based on observations taken by the CANDELS Multi-Cycle Treasury Program with the NASA/ESA HST, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. We gratefully acknowledge R. Abraham for access to his morphology analysis code. This work is also supported under the National Natural Science Foundation of China under grants (11133001, 10878010, and 10873012) and the National Basic Research Program (973 program No. 2007CB815404 and 2007CB815405). We are greatful to the anonymous referee for helpful comments. NR 115 TC 27 Z9 27 U1 1 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 20 PY 2012 VL 752 IS 2 AR 134 DI 10.1088/0004-637X/752/2/134 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 965AK UT WOS:000305738000057 ER PT J AU Braje, TJ Rick, TC Erlandson, JM AF Braje, Todd J. Rick, Torben C. Erlandson, Jon M. TI A trans-Holocene historical ecological record of shellfish harvesting on California's Northern Channel Islands SO QUATERNARY INTERNATIONAL LA English DT Article ID SAN-MIGUEL ISLAND; HUMAN IMPACTS; SOUTHERN CALIFORNIA; MARITIME CULTURES; CLIMATE-CHANGE; PACIFIC COAST; ROSA ISLAND; DAISY CAVE; AMERICA; ABALONE AB For over 10,000 years, shellfish were an important food and raw material resource for ancient peoples on California's Northern Channel Islands. Early Channel Island peoples often focused on large, easy-togather intertidal species such as California mussels (Mytilus californianus) and black abalone (Haliotis cracherodii), with later peoples expanding their shellfish economy to include a wider range of species. By the time of European contact (AD 1542-1820) the Island Chumash lived in large, sedentary villages and collected a diverse range of shellfish species by the millions. Although predation by the Chumash and their ancestors affected the size of several key shellfish species, 19th and 20th century commercial harvests targeted specific, high-value species for global markets, bringing several shellfish species (e.g., white [Haliotis sorenseni], pink [Haliotis corrugata], and black abalone) to the brink of extinction. This analysis of shellfish remains from Northern Channel Island archaeological sites tracks the changing role of shellfish in human subsistence economies from Terminal Pleistocene to Historic times. An archaeological record featuring several millennia of relative resiliency under intensive Native American predation suggests that regulated, sustainable, and productive shellfish fisheries can be maintained if balanced and healthy near-shore ecosystems are rebuilt. (C) 2011 Elsevier Ltd and INQUA. All rights reserved. C1 [Braje, Todd J.] San Diego State Univ, Dept Anthropol, San Diego, CA 92182 USA. [Rick, Torben C.] Smithsonian Inst, Natl Museum Nat Hist, Dept Anthropol, Program Human Ecol & Archaeobiol, Washington, DC 20013 USA. [Erlandson, Jon M.] Univ Oregon, Museum Nat & Cultural Hist, Eugene, OR 97403 USA. RP Braje, TJ (reprint author), San Diego State Univ, Dept Anthropol, San Diego, CA 92182 USA. EM tbraje@mail.sdsu.edu; rickt@si.edu; jerland@uoregon.edu OI Erlandson, Jon/0000-0002-4705-4319 FU National Science Foundation; National Park Service; Western National Parks Association; University of Oregon; Smithsonian Institution FX Our research on the Channel Islands has been supported by multiple grants from the National Science Foundation, the National Park Service, and the Western National Parks Association, as well as support from the University of Oregon and the Smithsonian Institution. We are grateful to Ann Huston, Don Morris, Kelly Minas, and Ian Williams of Channel Islands National Park for helping facilitate our research. Thanks to Tiina Manne and Britt Starkovich for inviting us to participate in the Society for American Archaeology session that resulted in this manuscript. Finally, we thank the editors, two anonymous reviewers, and production staff of Quaternary International for helping bring this paper to fruition. NR 74 TC 19 Z9 19 U1 4 U2 27 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1040-6182 EI 1873-4553 J9 QUATERN INT JI Quat. Int. PD JUN 20 PY 2012 VL 264 BP 109 EP 120 DI 10.1016/j.quaint.2011.09.011 PG 12 WC Geography, Physical; Geosciences, Multidisciplinary SC Physical Geography; Geology GA 963WU UT WOS:000305656500010 ER PT J AU Parrent, JT Howell, DA Friesen, B Thomas, RC Fesen, RA Milisavljevic, D Bianco, FB Dilday, B Nugent, P Baron, E Arcavi, I Ben-Ami, S Bersier, D Bildsten, L Bloom, J Cao, Y Cenko, SB Filippenko, AV Gal-Yam, A Kasliwal, MM Konidaris, N Kulkarni, SR Law, NM Levitan, D Maguire, K Mazzali, PA Ofek, EO Pan, Y Polishook, D Poznanski, D Quimby, RM Silverman, JM Sternberg, A Sullivan, M Walker, ES Xu, D Buton, C Pereira, R AF Parrent, J. T. Howell, D. A. Friesen, B. Thomas, R. C. Fesen, R. A. Milisavljevic, D. Bianco, F. B. Dilday, B. Nugent, P. Baron, E. Arcavi, I. Ben-Ami, S. Bersier, D. Bildsten, L. Bloom, J. Cao, Y. Cenko, S. B. Filippenko, A. V. Gal-Yam, A. Kasliwal, M. M. Konidaris, N. Kulkarni, S. R. Law, N. M. Levitan, D. Maguire, K. Mazzali, P. A. Ofek, E. O. Pan, Y. Polishook, D. Poznanski, D. Quimby, R. M. Silverman, J. M. Sternberg, A. Sullivan, M. Walker, E. S. Xu, Dong Buton, C. Pereira, R. TI ANALYSIS OF THE EARLY-TIME OPTICAL SPECTRA OF SN 2011fe IN M101 SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE supernovae: general; supernovae: individual (SN 2011fe) ID IA SUPERNOVA SPECTRA; WHITE-DWARF STAR; FACTORY OBSERVATIONS; COMPANION STAR; PROGENITOR; DIVERSITY; FEATURES; SIGNATURES; MERGERS; EJECTA AB The nearby Type Ia supernova (SN Ia) SN 2011fe in M101 (cz = 241 km s(-1)) provides a unique opportunity to study the early evolution of a "normal" SN Ia, its compositional structure, and its elusive progenitor system. We present 18 high signal-to-noise spectra of SN 2011fe during its first month beginning 1.2 days post-explosion and with an average cadence of 1.8 days. This gives a clear picture of how various line-forming species are distributed within the outer layers of the ejecta, including that of unburned material (C+O). We follow the evolution of C II absorption features until they diminish near maximum light, showing overlapping regions of burned and unburned material between ejection velocities of 10,000 and 16,000 km s(-1). This supports the notion that incomplete burning, in addition to progenitor scenarios, is a relevant source of spectroscopic diversity among SNe Ia. The observed evolution of the highlyDoppler-shifted OI lambda 7774 absorption features detected within 5 days post-explosion indicates the presence of OI with expansion velocities from 11,500 to 21,000 km s(-1). The fact that some OI is present above C II suggests that SN 2011fe may have had an appreciable amount of unburned oxygen within the outer layers of the ejecta. C1 [Parrent, J. T.; Fesen, R. A.] Dartmouth Coll, Dept Phys & Astron, Wilder Lab 6127, Hanover, NH 03755 USA. [Parrent, J. T.; Howell, D. A.; Bianco, F. B.; Dilday, B.] Global Telescope Network, Las Cumbres Observ, Goleta, CA 93117 USA. [Howell, D. A.; Bianco, F. B.; Dilday, B.; Bildsten, L.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93117 USA. [Friesen, B.; Baron, E.] Univ Oklahoma, Homer L Dodge Dept Phys & Astron, Norman, OK 73019 USA. [Thomas, R. C.; Nugent, P.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA. [Milisavljevic, D.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Nugent, P.; Bloom, J.; Cenko, S. B.; Filippenko, A. V.; Silverman, J. M.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Baron, E.] Hamburger Sternwarte, D-21029 Hamburg, Germany. [Baron, E.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Arcavi, I.; Ben-Ami, S.; Gal-Yam, A.; Ofek, E. O.; Xu, Dong] Weizmann Inst Sci, Dept Particle Phys & Astrophys, IL-76100 Rehovot, Israel. [Bersier, D.] Liverpool John Moores Univ, Astrophys Res Inst, Birkenhead CH41 1LD, Merseyside, England. [Cao, Y.; Konidaris, N.; Kulkarni, S. R.; Levitan, D.] CALTECH, Cahill Ctr Astron & Astrophys, Pasadena, CA 91125 USA. [Kasliwal, M. M.] Observ Carnegie Inst Sci, Pasadena, CA 91101 USA. [Law, N. M.] Univ Toronto, Dunlap Inst Astron & Astrophys, Toronto, ON M5S 3H4, Canada. [Maguire, K.; Pan, Y.; Sullivan, M.] Univ Oxford, Dept Phys Astrophys, Oxford OX1 3RH, England. [Mazzali, P. A.; Sternberg, A.] Max Planck Inst Astrophys, D-85748 Garching, Germany. [Mazzali, P. A.] INAF Osservatorio Astron, I-35122 Padua, Italy. [Polishook, D.] MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA. [Poznanski, D.] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel. [Quimby, R. M.] Univ Tokyo, Kavli Inst Phys & Math Universe, Kashiwa, Chiba 2778583, Japan. [Walker, E. S.] Scuola Normale Super Pisa, I-56126 Pisa, Italy. [Buton, C.] Univ Bonn, Phys Inst, D-53115 Bonn, Germany. [Pereira, R.] Univ Lyon, F-69622 Villeurbanne, France. [Pereira, R.] Univ Lyon 1, F-69622 Villeurbanne, France. [Pereira, R.] Inst Phys Nucl, CNRS, IN2P3, Lyon, France. RP Parrent, JT (reprint author), Dartmouth Coll, Dept Phys & Astron, Wilder Lab 6127, Hanover, NH 03755 USA. OI Baron, Edward/0000-0001-5393-1608; Sullivan, Mark/0000-0001-9053-4820 FU Las Cumbres Observatory Global Telescope Network; Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231] FX This work was supported by the Las Cumbres Observatory Global Telescope Network. This research used resources of the National Energy Research Scientific Computing Center, which is supported by the Office of Science of the U.S. Department of Energy under contract no. DE-AC02-05CH11231. NR 42 TC 38 Z9 38 U1 1 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 EI 2041-8213 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD JUN 20 PY 2012 VL 752 IS 2 AR L26 DI 10.1088/2041-8205/752/2/L26 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961JV UT WOS:000305461600009 ER PT J AU Hagedorn, M McCarthy, M Carter, VL Meyers, SA AF Hagedorn, Mary McCarthy, Megan Carter, Virginia L. Meyers, Stuart A. TI Oxidative Stress in Zebrafish (Danio rerio) Sperm SO PLOS ONE LA English DT Article ID SPONTANEOUS LIPID-PEROXIDATION; OXYGEN SPECIES GENERATION; HUMAN-SPERMATOZOA; SUPEROXIDE-DISMUTASE; HYDROGEN-PEROXIDE; DNA-DAMAGE; GLUTATHIONE-PEROXIDASE; EQUINE SPERMATOZOA; MOUSE SPERMATOZOA; HIGH-THROUGHPUT AB Laboratories around the world have produced tens of thousands of mutant and transgenic zebrafish lines. As with mice, maintaining all of these valuable zebrafish genotypes is expensive, risky, and beyond the capacity of even the largest stock centers. Because reducing oxidative stress has become an important aspect of reducing the variability in mouse sperm cryopreservation, we examined whether antioxidants might improve cryopreservation of zebrafish sperm. Four experiments were conducted in this study. First, we used the xanthine-xanthine oxidase (X-XO) system to generate reactive oxygen species (ROS). The X-XO system was capable of producing a stress reaction in zebrafish sperm reducing its sperm motility in a concentration dependent manner (P<0.05). Second, we examined X-XO and the impact of antioxidants on sperm viability, ROS and motility. Catalase (CAT) mitigated stress and maintained viability and sperm motility (P>0.05), whereas superoxide dismutase (SOD) and vitamin E did not (P<0.05). Third, we evaluated ROS in zebrafish spermatozoa during cryopreservation and its effect on viability and motility. Methanol (8%) reduced viability and sperm motility (P<0.05), but the addition of CAT mitigated these effects (P>0.05), producing a mean 2.0 to 2.9-fold increase in post-thaw motility. Fourth, we examined the effect of additional cryoprotectants and CAT on fresh sperm motility. Cryoprotectants, 8% methanol and 10% dimethylacetamide (DMA), reduced the motility over the control value (P<0.5), whereas 10% dimethylformamide (DMF) with or without CAT did not (P>0.05). Zebrafish sperm protocols should be modified to improve the reliability of the cryopreservation process, perhaps using a different cryoprotectant. Regardless, the simple addition of CAT to present-day procedures will significantly improve this process, assuring increased and less variable fertilization success and allowing resource managers to dependably plan how many straws are needed to safely cryopreserve a genetic line. C1 [Hagedorn, Mary; Carter, Virginia L.] Smithsonian Conservat Biol Inst, Dept Reprod Sci, Washington, DE USA. [Hagedorn, Mary; Carter, Virginia L.] Univ Hawaii, Hawaii Inst Marine Biol, Kaneohe, HI USA. [McCarthy, Megan; Meyers, Stuart A.] Univ Calif Davis, Dept Anat, Sch Vet Med, Davis, CA 95616 USA. RP Hagedorn, M (reprint author), Smithsonian Conservat Biol Inst, Dept Reprod Sci, Washington, DE USA. EM hagedornm@si.edu FU National Institutes of Health (NIH) [R24 RR016581, RO1 2RR016581]; Zebrafish International Research Center FX This work was supported by a grant to MM from National Institutes of Health (NIH) # R24 RR016581 and SM from NIH # RO1 2RR016581. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.; We would like to thank Dr. Bruce Draper for his kind assistance during the preliminary studies for this work and the Zebrafish International Research Center for their support and comments on this manuscript. In addition, we would like to thank the three anonymous reviewers whose comments greatly improved this paper. This manuscript has been approved for publication by the Hawaii Institute of Marine Biology as contribution #1490. NR 59 TC 14 Z9 14 U1 1 U2 29 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA SN 1932-6203 J9 PLOS ONE JI PLoS One PD JUN 19 PY 2012 VL 7 IS 6 AR e39397 DI 10.1371/journal.pone.0039397 PG 11 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 963VI UT WOS:000305652700078 PM 22724013 ER PT J AU Yeung, TK Le Sage, D Pham, LM Stanwix, PL Walsworth, RL AF Yeung, T. K. Le Sage, D. Pham, L. M. Stanwix, P. L. Walsworth, R. L. TI Anti-reflection coating for nitrogen-vacancy optical measurements in diamond SO APPLIED PHYSICS LETTERS LA English DT Article ID NANOSCALE RESOLUTION; SPIN-QUBIT; COHERENCE AB We realize anti-reflection (AR) coatings for optical excitation and fluorescence measurements of nitrogen-vacancy (NV) color centers in bulk diamond by depositing quarter-wavelength thick silica layers on the diamond surface. These AR coatings improve NV-diamond optical measurements by reducing optical reflection at the diamond-air interface from approximate to 17% to approximate to 2%, which allows more effective NV optical excitation and more efficient detection of NV fluorescence. We also show that diamond AR coatings eliminate standing-wave interference patterns of excitation laser intensity within bulk diamond, and thereby greatly reduce spatial variations in NV fluorescence, which can degrade spatially resolved magnetic field sensing using NV centers. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4730401] C1 [Yeung, T. K.; Pham, L. M.] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA. [Yeung, T. K.; Le Sage, D.; Stanwix, P. L.; Walsworth, R. L.] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA. [Le Sage, D.; Stanwix, P. L.; Walsworth, R. L.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Yeung, TK (reprint author), Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA. RI Stanwix, Paul/A-5280-2009; OI Stanwix, Paul/0000-0002-7069-8569; Le Sage, David/0000-0003-1678-9491 FU NIST; NSF; DARPA (QuEST program); DARPA (QuASAR program) FX We gratefully acknowledge the provision of diamond samples by Apollo Diamond and Element Six. This work was supported by NIST, NSF, and DARPA (QuEST and QuASAR programs). NR 21 TC 6 Z9 6 U1 0 U2 16 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUN 18 PY 2012 VL 100 IS 25 AR 251111 DI 10.1063/1.4730401 PG 4 WC Physics, Applied SC Physics GA 964EL UT WOS:000305676400011 ER PT J AU Phillips, DF Glenday, AG Li, CH Cramer, C Furesz, G Chang, GQ Benedick, AJ Chen, LJ Kartner, FX Korzennik, S Sasselov, D Szentgyorgyi, A Walsworth, RL AF Phillips, David F. Glenday, Alexander G. Li, Chih-Hao Cramer, Claire Furesz, Gabor Chang, Guoqing Benedick, Andrew J. Chen, Li-Jin Kaertner, Franz X. Korzennik, Sylvain Sasselov, Dimitar Szentgyorgyi, Andrew Walsworth, Ronald L. TI Calibration of an astrophysical spectrograph below 1 m/s using a laser frequency comb SO OPTICS EXPRESS LA English DT Article ID ASTRO-COMB; OPTICAL-FIBERS; MASS PLANETS; HARPS SEARCH; CM S(-1); PRECISION; SPECTRA; DECELERATION; SYSTEM; PHASE AB We deployed two wavelength calibrators based on laser frequency combs ("astro-combs") at an astronomical telescope. One astro-comb operated over a 100 nm band in the deep red (similar to 800 nm) and a second operated over a 20 nm band in the blue (similar to 400 nm). We used these red and blue astro-combs to calibrate a high-resolution astrophysical spectrograph integrated with a 1.5 m telescope, and demonstrated calibration precision and stability sufficient to enable detection of changes in stellar radial velocity <1 m/s. (C) 2012 Optical Society of America C1 [Phillips, David F.; Glenday, Alexander G.; Li, Chih-Hao; Cramer, Claire; Furesz, Gabor; Korzennik, Sylvain; Sasselov, Dimitar; Szentgyorgyi, Andrew; Walsworth, Ronald L.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Furesz, Gabor] Hungarian Acad Sci, Konkoly Observ, Budapest, Hungary. [Chang, Guoqing; Benedick, Andrew J.; Chen, Li-Jin; Kaertner, Franz X.] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA. [Chang, Guoqing; Benedick, Andrew J.; Chen, Li-Jin; Kaertner, Franz X.] MIT, Elect Res Lab, Cambridge, MA 02139 USA. [Kaertner, Franz X.] Univ Hamburg, Dept Phys, Hamburg, Germany. [Kaertner, Franz X.] DESY, D-2000 Hamburg, Germany. [Walsworth, Ronald L.] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA. RP Phillips, DF (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM dphil@cfa.harvard.edu FU NSF [AST-0804441, ATI-0905214, ATI-1006503]; NASA [NNX09AC92G]; Hungarian OTKA-NFU Mobility grant [MB08C 81013] FX This work was performed with support from NSF grants AST-0804441, ATI-0905214 and ATI-1006503; NASA grant NNX09AC92G; and internal support from the Smithsonian Astrophysical Observatory. GF acknowledges financial support from the Hungarian OTKA-NFU Mobility grant MB08C 81013. We would like to thank Keith Lykke for the use of a wavemeter during this project. NR 30 TC 29 Z9 29 U1 2 U2 15 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 1094-4087 J9 OPT EXPRESS JI Opt. Express PD JUN 18 PY 2012 VL 20 IS 13 BP 13711 EP 13726 DI 10.1364/OE.20.013711 PG 16 WC Optics SC Optics GA 961NV UT WOS:000305473000013 PM 22714437 ER PT J AU Opresko, DM Wagner, D Montgomery, AD Brugler, MR AF Opresko, D. M. Wagner, D. Montgomery, A. D. Brugler, M. R. TI Discovery of Aphanipathes verticillata (Cnidaria: Anthozoa: Antipatharia) in the Hawaiian Islands SO ZOOTAXA LA English DT Article DE Aphanipathidae; Aphanipathes verticillata mauiensis; new subspecies; black coral; range extension ID MITOCHONDRIAL-DNA; SCLERACTINIA; POCILLOPORIDAE; EVOLUTION; SPACERS; CORALS; GENE AB Mesophotic coral reef surveys conducted off Maui in 2008-2009 revealed several specimens superficially resembling the commercial black coral species Antipathes griggi Opresko 2009. After subsequent microscopic examination of the skeletal features, these colonies proved to be morphologically very similar to Aphanipathes verticillata Brook 1889, a species never before reported from the Hawaiian Islands. A comparison with samples of the type material of A. verticillata indicated that the specimens collected in Hawaiian waters differed from the type in having simplier and less dense tubercles on the skeletal spines, a character which merits the recognition of the Hawaiian population as a new subspecies, A. verticillata mauiensis. Colonies of the new subspecies exhibit considerable morphological variation; DNA analysis of fifteen specimens ruled out the possibility of the presence of a cryptic species. Further DNA investigations on specimens from various localities in the western Pacific and Indian Ocean are needed to better understand the genetic relationship between the two forms. The morphological similarity of A. verticillata mauiensis with Antipathes griggi raises questions concerning the validity of past field surveys evaluating the population size and structure of A. griggi since it is possible that the two species could easily be misidentified based on gross morphology alone. Additional studies are also needed to document the geographic and bathymetric distribution of the subspecies along the Hawaiian Island chain. C1 [Opresko, D. M.] Smithsonian Inst, Natl Museum Nat Hist, Washington, DC 20560 USA. [Wagner, D.] Papahanaumokuakea Marine Natl Monument, Honolulu, HI 96825 USA. [Montgomery, A. D.] US Fish & Wildlife Serv, Pacific Isl Fish & Wildlife Off, Honolulu, HI 96850 USA. [Brugler, M. R.] Amer Museum Nat Hist, Div Invertebrate Zool, Sackler Inst Comparat Genom, New York, NY 10024 USA. RP Opresko, DM (reprint author), Smithsonian Inst, Natl Museum Nat Hist, Washington, DC 20560 USA. EM dmopresko@hotmail.com; Daniel.Wagner@noaa.gov; Tony_Montgomery@fws.gov; mbrugler@amnh.org FU Smithsonian Institution, Washington, DC; Oak Ridge National Laboratory, Oak Ridge, TN; National Oceanic and Atmospheric Administration (NOAA) Coastal Ocean Program [NA07NOS4780189]; NOAA Coral Reef Conservation Program [NA05OAR4301108]; NOAA Fisheries Disaster Relief Program [NA03NMF4520452]; Western Pacific Fisheries Management Council [NA07NMF4410114]; National Science Foundation [OCE-0623678]; National Marine Sanctuary Program [NWHICRER MOA 2005-008/6882]; National Science Foundation grant, Assembling the Cnidarian Tree of Life [EF-0531570] FX This work was supported in part by the Smithsonian Institution, Washington, DC, Oak Ridge National Laboratory, Oak Ridge, TN, the National Oceanic and Atmospheric Administration (NOAA) Coastal Ocean Program (NA07NOS4780189 to the State of Hawai'i Department of Land and Natural Resources [DLNR]), the NOAA Coral Reef Conservation Program (NA05OAR4301108 to the Hawai'i Undersea Research Laboratory [HURL]), the NOAA Fisheries Disaster Relief Program (NA03NMF4520452 to the State of Hawai'i/DLNR), the Western Pacific Fisheries Management Council (NA07NMF4410114 to the University of Hawai'i through NOAA's Coral Reef Conservation Grant Program), the National Science Foundation (OCE-0623678), and the National Marine Sanctuary Program (NWHICRER MOA 2005-008/6882). Partial support for the molecular analysis was provided by a subcontract to Scott C. France from a National Science Foundation grant, Assembling the Cnidarian Tree of Life (#EF-0531570). M. R. Brugler thanks Dr. France for his guidance and support while performing the molecular analysis at the University of Louisiana at Lafayette. D. M. Opresko is a Research Associate at the NMNH, Smithsonian Institution, and gratefully acknowledges that affiliation. The findings and conclusions in this article are those of the authors and do not necessarily represent the views of the U.S. Fish and Wildlife Service. NR 28 TC 3 Z9 4 U1 1 U2 4 PU MAGNOLIA PRESS PI AUCKLAND PA PO BOX 41383, AUCKLAND, ST LUKES 1030, NEW ZEALAND SN 1175-5326 EI 1175-5334 J9 ZOOTAXA JI Zootaxa PD JUN 15 PY 2012 IS 3348 BP 24 EP 39 PG 16 WC Zoology SC Zoology GA 958VI UT WOS:000305268400002 ER PT J AU Hong, T AF Hong, Terry TI The Red Chamber SO LIBRARY JOURNAL LA English DT Book Review C1 [Hong, Terry] Smithsonian Book Dragon, Washington, DC 20013 USA. RP Hong, T (reprint author), Smithsonian Book Dragon, Washington, DC 20013 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU REED BUSINESS INFORMATION PI NEW YORK PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010 USA SN 0363-0277 J9 LIBR J JI Libr. J. PD JUN 15 PY 2012 VL 137 IS 11 BP 68 EP 68 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA 961WZ UT WOS:000305501500090 ER PT J AU Hong, T AF Hong, Terry TI Atlas: The Archaeology of an Imaginary City SO LIBRARY JOURNAL LA English DT Book Review C1 [Hong, Terry] Smithsonian BookDragon, Washington, DC USA. RP Hong, T (reprint author), Smithsonian BookDragon, Washington, DC USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU REED BUSINESS INFORMATION PI NEW YORK PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010 USA SN 0363-0277 J9 LIBR J JI Libr. J. PD JUN 15 PY 2012 VL 137 IS 11 BP 69 EP 69 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA 961WZ UT WOS:000305501500092 ER PT J AU Riley, SM AF Riley, Sheila M. TI House Blood: A Joe DeMarco Thriller SO LIBRARY JOURNAL LA English DT Book Review C1 [Riley, Sheila M.] Smithsonian Inst Libs, Washington, DC 20560 USA. RP Riley, SM (reprint author), Smithsonian Inst Libs, Washington, DC 20560 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU REED BUSINESS INFORMATION PI NEW YORK PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010 USA SN 0363-0277 J9 LIBR J JI Libr. J. PD JUN 15 PY 2012 VL 137 IS 11 BP 72 EP 72 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA 961WZ UT WOS:000305501500102 ER PT J AU Durant, SM Pettorelli, N Bashir, S Woodroffe, R Wacher, T De Ornellas, P Ransom, C Abaigar, T Abdelgadir, M El Alqamy, H Beddiaf, M Belbachir, F Belbachir-Bazi, A Berbash, AA Beudels-Jamar, R Boitani, L Breitenmoser, C Cano, M Chardonnet, P Collen, B Cornforth, WA Cuzin, F Gerngross, P Haddane, B Hadjeloum, M Jacobson, A Jebali, A Lamarque, F Mallon, D Minkowski, K Monfort, S Ndoassal, B Newby, J Ngakoutou, BE Niagate, B Purchase, G Samaila, S Samna, AK Sillero-Zubiri, C Soultan, AE Price, MRS Baillie, JEM AF Durant, S. M. Pettorelli, N. Bashir, S. Woodroffe, R. Wacher, T. De Ornellas, P. Ransom, C. Abaigar, T. Abdelgadir, M. El Alqamy, H. Beddiaf, M. Belbachir, F. Belbachir-Bazi, A. Berbash, A. A. Beudels-Jamar, R. Boitani, L. Breitenmoser, C. Cano, M. Chardonnet, P. Collen, B. Cornforth, W. A. Cuzin, F. Gerngross, P. Haddane, B. Hadjeloum, M. Jacobson, A. Jebali, A. Lamarque, F. Mallon, D. Minkowski, K. Monfort, S. Ndoassal, B. Newby, J. Ngakoutou, B. E. Niagate, B. Purchase, G. Samaila, S. Samna, A. K. Sillero-Zubiri, C. Soultan, A. E. Price, M. R. Stanley Baillie, J. E. M. TI Forgotten Biodiversity in Desert Ecosystems SO SCIENCE LA English DT Letter C1 [Durant, S. M.; Pettorelli, N.; Woodroffe, R.; Belbachir, F.; Collen, B.; Cornforth, W. A.] Zool Soc London, Inst Zool, London NW1 4RY, England. [Durant, S. M.; Purchase, G.] Wildlife Conservat Soc, Bronx, NY 10460 USA. [Wacher, T.; De Ornellas, P.; Ransom, C.; Purchase, G.; Baillie, J. E. M.] Zool Soc London, Conservat Programmes, London NW1 4RY, England. [Abaigar, T.; Cano, M.] CSIC, EEZA, La Canada De San Urbano 04120, Almeria, Spain. [Abdelgadir, M.] Univ Hail, Dept Biol, Hail, Saudi Arabia. [El Alqamy, H.; Soultan, A. E.] EEAA, Nat Conservat Sect, Cairo, Egypt. [Beddiaf, M.] Off Natl Parc Culturel Tassili Ajjer, Djanet 33100, Algeria. [Belbachir-Bazi, A.] Univ Bejaia, Fac Sci Nat & Vie, Lab Ecol & Environm, Bejaia 06000, Algeria. [Berbash, A. A.] EGA, Nat Conservat Dept, Tripoli, Libya. [Beudels-Jamar, R.] Royal Belgian Inst Nat Sci, B-1000 Brussels, Belgium. [Boitani, L.] Univ Roma La Sapienza, Dept Biol & Biotechnol, I-00185 Rome, Italy. [Breitenmoser, C.] KORA, IUCN SSC Cat Specialist Grp, CH-3074 Muri, Switzerland. [Chardonnet, P.] IGF Fdn, F-75003 Paris, France. [Gerngross, P.] BIOGEOMAPS, Umwelt PR Gerngross e U, A-1070 Vienna, Austria. [Haddane, B.] Fdn Mohamed VI Protect Environm, Temara 12000, Morocco. [Hadjeloum, M.] Chef Bur Gest & Prservat Faune, Direct Protect Faune & Flore, Ben Aknoun Alger, Algeria. [Jacobson, A.] Duke Univ, Nicholas Sch Environm, Durham, NC 27708 USA. [Jacobson, A.] Natl Geog Soc, Big Cats Initiat, Washington, DC 20036 USA. [Jebali, A.] TWCS, Dept Biol, Fac Sci Tunis, Tunis 2092, Tunisia. [Lamarque, F.] Minist Ecol Dev Durable & Energ, F-92055 La Defense Cedex, France. [Mallon, D.] Manchester Metropolitan Univ, Div Biol & Conservat Ecol, Manchester M1 5GD, Lancs, England. [Monfort, S.] Smithsonian Conservat Biol Inst, Front Royal, VA 22630 USA. [Ndoassal, B.; Ngakoutou, B. E.] Direct Parcs Natl Reserv Faune & Chasse, Ndjamena, Tchad, Chad. [Newby, J.] Sahara Conservat Fund, CH-1148 Lisle, Switzerland. [Samaila, S.; Samna, A. K.] Direct Faune Chasse & Aires Protegee, Niamey, Niger. [Sillero-Zubiri, C.; Price, M. R. Stanley] Univ Oxford, Recanati Kaplan Ctr, Dept Zool, Wildlife Conservat Res Unit, Tubney OX13 5QL, Oxon, England. RP Durant, SM (reprint author), Zool Soc London, Inst Zool, Regents Pk, London NW1 4RY, England. EM sdurant@wcs.org RI Collen, Ben/D-5055-2011; Collen, Ben/F-2543-2016 OI Collen, Ben/0000-0003-2564-4243 NR 10 TC 15 Z9 15 U1 2 U2 41 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD JUN 15 PY 2012 VL 336 IS 6087 BP 1379 EP 1380 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 958BT UT WOS:000305211700016 PM 22700901 ER PT J AU Jansen, PA Forget, PM AF Jansen, Patrick A. Forget, Pierre-Michel TI Predatory Publishers and Plagiarism Prevention SO SCIENCE LA English DT Letter C1 [Jansen, Patrick A.] Wageningen Univ, Dept Environm Sci, Wageningen, Netherlands. [Jansen, Patrick A.] Smithsonian Trop Res Inst, Balboa, Ancon, Panama. [Forget, Pierre-Michel] Museum Natl Hist Nat, Brunoy, France. RP Jansen, PA (reprint author), Wageningen Univ, Dept Environm Sci, Wageningen, Netherlands. EM patrick.jansen@wur.nl RI Forget, Pierre-Michel/B-4355-2009; Jansen, Patrick/G-2545-2015 OI Forget, Pierre-Michel/0000-0002-9252-974X; Jansen, Patrick/0000-0002-4660-0314 NR 5 TC 3 Z9 3 U1 5 U2 21 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD JUN 15 PY 2012 VL 336 IS 6087 BP 1380 EP 1380 PG 1 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 958BT UT WOS:000305211700018 PM 22700902 ER PT J AU McMichael, CH Piperno, DR Bush, MB Silman, MR Zimmerman, AR Raczka, MF Lobato, LC AF McMichael, C. H. Piperno, D. R. Bush, M. B. Silman, M. R. Zimmerman, A. R. Raczka, M. F. Lobato, L. C. TI Sparse Pre-Columbian Human Habitation in Western Amazonia SO SCIENCE LA English DT Article ID BRAZILIAN AMAZON; FOREST; TREES AB Locally extensive pre-Columbian human occupation and modification occurred in the forests of the central and eastern Amazon Basin, but whether comparable impacts extend westward and into the vast terra firme (interfluvial) zones, remains unclear. We analyzed soils from 55 sites across central and western Amazonia to assess the history of human occupation. Sparse occurrences of charcoal and the lack of phytoliths from agricultural and disturbance species in the soils during pre-Columbian times indicated that human impacts on interfluvial forests were small, infrequent, and highly localized. No human artifacts or modified soils were found at any site surveyed. Riverine bluff areas also appeared less heavily occupied and disturbed than similar settings elsewhere. Our data indicate that human impacts on Amazonian forests were heterogeneous across this vast landscape. C1 [McMichael, C. H.; Bush, M. B.; Raczka, M. F.] Florida Inst Technol, Dept Biol Sci, Melbourne, FL 32901 USA. [Piperno, D. R.] Smithsonian Natl Museum Nat Hist, Dept Anthropol, Program Human Ecol & Archaeobiol, Washington, DC 20560 USA. [Piperno, D. R.] Smithsonian Trop Res Inst, Balboa, Panama. [Silman, M. R.] Wake Forest Univ, Dept Biol, Winston Salem, NC 27106 USA. [Silman, M. R.] Ctr Energy Environm & Sustainabil, Winston Salem, NC 27106 USA. [Zimmerman, A. R.] Univ Florida, Dept Geol Sci, Gainesville, FL 32611 USA. [Lobato, L. C.] Univ Fed Rondonia, Lab Geog Humana & Planejamento Ambiental, Porto Velho, Rondonia, Brazil. RP McMichael, CH (reprint author), Florida Inst Technol, Dept Biol Sci, Melbourne, FL 32901 USA. EM cmcmicha@my.fit.edu OI Bush, Mark/0000-0001-6894-8613; Zimmerman, Andrew/0000-0001-5137-4916 FU NSF [DEB 0742301, DEB 0743666]; Florida Institute of Technology; Smithsonian National Museum of Natural History; Smithsonian Tropical Research Institute FX Field work and 14C dating of charcoal fragments were funded by the NSF Ecology Program (awards DEB 0742301 and DEB 0743666). Other funding was provided by the Florida Institute of Technology; the Smithsonian National Museum of Natural History, including a Restricted Endowment and Small Grant Award; and the Smithsonian Tropical Research Institute. All data will be deposited in the Neotoma Database (www.neotomadb.org/). We thank B. McMichael, A. Correa-Metrio, J. Hernandez, T. Harrison, and B. Rado for field assistance. NR 31 TC 51 Z9 53 U1 8 U2 50 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD JUN 15 PY 2012 VL 336 IS 6087 BP 1429 EP 1431 DI 10.1126/science.1219982 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 958BT UT WOS:000305211700042 PM 22700926 ER PT J AU Low, R Weimer, H Nipper, J Balewski, JB Butscher, B Buchler, HP Pfau, T AF Loew, Robert Weimer, Hendrik Nipper, Johannes Balewski, Jonathan B. Butscher, Bjoern Buechler, Hans Peter Pfau, Tilman TI An experimental and theoretical guide to strongly interacting Rydberg gases SO JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS LA English DT Article ID BOSE-EINSTEIN CONDENSATION; DIGITAL QUANTUM SIMULATION; PHASE-TRANSITION; ENERGY-TRANSFER; MOTT INSULATOR; NOBEL LECTURE; NEUTRAL ATOMS; SINGLE ATOMS; LASER; BLOCKADE AB We review experimental and theoretical tools to excite, study and understand strongly interacting Rydberg gases. The focus lies on the excitation of dense ultracold atomic samples close to, or within quantum degeneracy, high-lying Rydberg states. The major part is dedicated to highly excited S-states of rubidium, which feature an isotropic van der Waals potential. Nevertheless, the setup and the methods presented are also applicable to other atomic species used in the field of laser cooling and atom trapping. C1 [Loew, Robert; Nipper, Johannes; Balewski, Jonathan B.; Butscher, Bjoern; Pfau, Tilman] Univ Stuttgart, Inst Phys, D-70569 Stuttgart, Germany. [Weimer, Hendrik] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA. [Weimer, Hendrik] Harvard Smithsonian Ctr Astrophys, ITAMP, Cambridge, MA 02138 USA. [Buechler, Hans Peter] Univ ,Stuttgart, Inst Theoret Phys 3, D-70569 Stuttgart, Germany. RP Low, R (reprint author), Univ Stuttgart, Inst Phys, D-70569 Stuttgart, Germany. EM r.loew@physik.uni-stuttgart.de RI Pfau, Tilman/G-1774-2011; Loew, Robert/I-8206-2014 FU Deutsche Forschungsgemeinschaft (DFG); European Commission; National Science Foundation; Postdoctoral Program of the German Academic Exchange Service (DAAD) FX The authors thank Helmar Bender, Vera Bendkowsky, Axel Grabowski, Rolf Heidemann, Peter Kollmann, Eva Kuhnle, Ludmila Kukota, Ulrich Krohn, Johannes Nold and Alban Urvoy for their experimental and theoretical contributions. Funding for the ultracold rubidium Rydberg setup has been provided by the Deutsche Forschungsgemeinschaft (DFG) and the European Commission. HW acknowledges support by the National Science Foundation through a grant for the Institute for Theoretical Atomic, Molecular and Optical Physics at Harvard University and Smithsonian Astrophysical Observatory and by a fellowship within the Postdoctoral Program of the German Academic Exchange Service (DAAD). NR 126 TC 110 Z9 110 U1 4 U2 43 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-4075 J9 J PHYS B-AT MOL OPT JI J. Phys. B-At. Mol. Opt. Phys. PD JUN 14 PY 2012 VL 45 IS 11 AR 113001 DI 10.1088/0953-4075/45/11/113001 PG 21 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 958ZZ UT WOS:000305280800001 ER PT J AU Kocsis, B Levin, J AF Kocsis, Bence Levin, Janna TI Repeated bursts from relativistic scattering of compact objects in galactic nuclei SO PHYSICAL REVIEW D LA English DT Article ID NEUTRON-STAR MERGERS; GAMMA-RAY BURSTS; MASS BLACK-HOLES; GRAVITATIONAL-RADIATION; GLOBULAR-CLUSTERS; STANDARD SIRENS; BINARY-SYSTEMS; POINT-MASSES; 3C 66B; WAVES AB Galactic nuclei are densely populated by stellar mass compact objects such as black holes and neutron stars. Bound, highly eccentric binaries form as a result of gravitational wave (GW) losses during close flybys between these objects. We study the evolution of these systems using 2.5 and 3.5 order post-Newtonian (PN) equations of motion. The GW signal consists of many thousand repeated bursts (RB) for minutes to days (depending on the impact parameter and masses), followed by a powerful GW chirp and an eccentric merger. We show that a significant signal-to-noise ratio accumulates already in the RB phase, corresponding to a detection limit around 200-300 Mpc and 300-600 Mpc for advanced LIGO for an average orientation black hole/neutron star or black hole/black hole binary, respectively. The theoretical errors introduced by the inaccuracy of the PN templates are typically much less severe for the RB phase than in the following eccentric merger. The GW signal in the RB phase is broadband; we show that encounters involving intermediate mass black holes are detectable in multiple frequency bands coincidentally using LIGO and LISA. C1 [Kocsis, Bence] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Levin, Janna] Columbia Univ Barnard Coll, Dept Phys & Astron, New York, NY 10027 USA. [Levin, Janna] Columbia Univ, Inst Strings Cosmol & Astroparticle Phys, New York, NY 10027 USA. RP Kocsis, B (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. RI Kocsis, Bence/C-3061-2013 OI Kocsis, Bence/0000-0002-4865-7517 FU NSF [AST-0908365]; KITP [NSF PHY05- 51164]; NASA through Einstein Postdoctoral Fellowship by Chandra X-ray Observatory Center [PF9-00063]; National Aeronautics Space Administration [NAS8-03060]; Hungarian Research Fund OTKA [68228] FX We gratefully acknowledge valuable discussions with Szabolcs Marka who suggested this collaboration, Sean McWilliams, Scott Hughes, Alessandra Buonanno, and Ryan O'Leary. This work was supported by NSF Grant No. AST-0908365. J. L. gratefully acknowledges support of KITP under Grant No. NSF PHY05- 51164. B. K. acknowledges support from NASA through Einstein Postdoctoral Fellowship No. PF9-00063) by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics Space Administration under Contract No. NAS8-03060, and the Hungarian Research Fund OTKA (Grant No. 68228). NR 61 TC 36 Z9 36 U1 0 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JUN 14 PY 2012 VL 85 IS 12 AR 123005 DI 10.1103/PhysRevD.85.123005 PG 16 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 958QS UT WOS:000305256100004 ER PT J AU Elvis, M AF Elvis, Martin TI A midlife crisis for X-ray astronomy SO NATURE LA English DT Editorial Material C1 Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Elvis, M (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM elvis@cfa.harvard.edu NR 0 TC 0 Z9 0 U1 0 U2 0 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD JUN 14 PY 2012 VL 486 IS 7402 BP 181 EP 182 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 957UH UT WOS:000305189000011 PM 22699593 ER PT J AU Medeiros, MJ Adamski, D AF Medeiros, Matthew J. Adamski, David TI Three new species of Hawaiian moths from Kahoolawe island (Lepidoptera: Crambidae & Coleophoridae) SO ZOOTAXA LA English DT Article DE Blastobasini; endemic species; Hawai'i; Kaho'olawe; morphology; taxonomy AB Three new species of Hawaiian Lepidoptera are described herein: Pigritia uuku sp. nov. (Coleophoridae: Blastobasinae), Orthomecyna keoniae sp. nov. (Crambidae), and Tamsica kawikae sp. nov. (Crambidae) from Kahoolawe Island. C1 [Medeiros, Matthew J.] Urban Sch San Francisco, San Francisco, CA 94117 USA. [Medeiros, Matthew J.] Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA. [Adamski, David] Smithsonian Inst, Natl Museum Nat Hist, Dept Entomol, Washington, DC 20013 USA. RP Medeiros, MJ (reprint author), Urban Sch San Francisco, 1563 Page St, San Francisco, CA 94117 USA. EM matt.j.medeiros@gmail.com; adamskid@si.edu NR 10 TC 1 Z9 1 U1 0 U2 0 PU MAGNOLIA PRESS PI AUCKLAND PA PO BOX 41383, AUCKLAND, ST LUKES 1030, NEW ZEALAND SN 1175-5326 EI 1175-5334 J9 ZOOTAXA JI Zootaxa PD JUN 11 PY 2012 IS 3341 BP 59 EP 63 PG 5 WC Zoology SC Zoology GA 957VK UT WOS:000305193700005 ER PT J AU Chitta, LP van Ballegooijen, AA van der Voort, LR DeLuca, EE Kariyappa, R AF Chitta, L. P. van Ballegooijen, A. A. van der Voort, L. Rouppe DeLuca, E. E. Kariyappa, R. TI DYNAMICS OF THE SOLAR MAGNETIC BRIGHT POINTS DERIVED FROM THEIR HORIZONTAL MOTIONS SO ASTROPHYSICAL JOURNAL LA English DT Article DE Sun: photosphere; Sun: surface magnetism ID ALFVENIC WAVES; QUIET SUN; PHOTOSPHERE; ELEMENTS; TELESCOPE; CORONA; FLUX; CHROMOSPHERE; DIFFUSION; MISSION AB The subarcsecond bright points (BPs) associated with the small-scale magnetic fields in the lower solar atmosphere are advected by the evolution of the photospheric granules. We measure various quantities related to the horizontal motions of the BPs observed in two wavelengths, including the velocity autocorrelation function. A 1 hr time sequence of wideband Ha observations conducted at the Swedish 1 m Solar Telescope (SST) and a 4 hr Hinode G-band time sequence observed with the Solar Optical Telescope are used in this work. We follow 97 SST and 212 Hinode BPs with 3800 and 1950 individual velocity measurements, respectively. For its high cadence of 5 s as compared to 30 s for Hinode data, we emphasize more the results from SST data. The BP positional uncertainty achieved by SST is as low as 3 km. The position errors contribute 0.75 km(2) s(-2) to the variance of the observed velocities. The raw and corrected velocity measurements in both directions, i.e., (v(x), v(y)), have Gaussian distributions with standard deviations of (1.32, 1.22) and (1.00, 0.86) km s(-1), respectively. The BP motions have correlation times of about 22-30 s. We construct the power spectrum of the horizontal motions as a function of frequency, a quantity that is useful and relevant to the studies of generation of Alfven waves. Photospheric turbulent diffusion at timescales less than 200 s is found to satisfy a power law with an index of 1.59. C1 [Chitta, L. P.; van Ballegooijen, A. A.; DeLuca, E. E.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Chitta, L. P.; Kariyappa, R.] Indian Inst Astrophys, Bangalore 560034, Karnataka, India. [van der Voort, L. Rouppe] Univ Oslo, Inst Theoret Astrophys, NO-0315 Oslo, Norway. RP Chitta, LP (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St,MS-15, Cambridge, MA 02138 USA. RI DeLuca, Edward/L-7534-2013; OI DeLuca, Edward/0000-0001-7416-2895; Chitta, Lakshmi Pradeep/0000-0002-9270-6785 FU NASA [NNM07AB07C] FX The authors thank the referee for many comments and suggestions that helped improve the presentation of the manuscript. L.P.C. is a 2011-2012 SAO Pre-Doctoral Fellow at the Harvard-Smithsonian Center for Astrophysics. The Swedish 1 m Solar Telescope is operated on the island of La Palma by the Institute for Solar Physics of the Royal Swedish Academy of Sciences in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. Funding for L. P. C. and E. E. D. is provided by NASA contract NNM07AB07C. Hinode is a Japanese mission developed and launched by ISAS/JAXA, collaborating with NAOJ as a domestic partner, NASA and STFC (UK) as international partners. Scientific operation of the Hinode mission is conducted by the Hinode science team organized at ISAS/JAXA. This team mainly consists of scientists from institutes in the partner countries. Support for the post-launch operation is provided by JAXA and NAOJ (Japan), STFC (UK), NASA (USA), ESA, and NSC (Norway). This research has made use of NASA's Astrophysics Data System. NR 30 TC 26 Z9 26 U1 2 U2 7 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 10 PY 2012 VL 752 IS 1 AR 48 DI 10.1088/0004-637X/752/1/48 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961KN UT WOS:000305463400048 ER PT J AU Civano, F Elvis, M Lanzuisi, G Aldcroft, T Trichas, M Bongiorno, A Brusa, M Blecha, L Comastri, A Loeb, A Salvato, M Fruscione, A Koekemoer, A Komossa, S Gilli, R Mainieri, V Piconcelli, E Vignali, C AF Civano, F. Elvis, M. Lanzuisi, G. Aldcroft, T. Trichas, M. Bongiorno, A. Brusa, M. Blecha, L. Comastri, A. Loeb, A. Salvato, M. Fruscione, A. Koekemoer, A. Komossa, S. Gilli, R. Mainieri, V. Piconcelli, E. Vignali, C. TI CHANDRA HIGH-RESOLUTION OBSERVATIONS OF CID-42, A CANDIDATE RECOILING SUPERMASSIVE BLACK HOLE SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: active; galaxies: interactions; galaxies: nuclei ID ACTIVE GALACTIC NUCLEI; X-RAY-EMISSION; QUASAR SDSS J092712.65+294344.0; GRAVITATIONAL-WAVE RECOIL; RADIATION RECOIL; GALAXIES; CATALOG; SLINGSHOT; ACCRETION; BINARIES AB We present Chandra High Resolution Camera observations of CID-42, a candidate recoiling supermassive black hole (SMBH) at z = 0.359 in the COSMOS survey. CID-42 shows two optical compact sources resolved in the HST/ACS image embedded in the same galaxy structure and a velocity offset of similar to 1300 km s(-1) between the H beta broad and narrow emission line, as presented by Civano et al. Two scenarios have been proposed to explain the properties of CID-42: a gravitational wave (GW) recoiling SMBH and a double Type 1/Type 2 active galactic nucleus (AGN) system, where one of the two is recoiling because of slingshot effect. In both scenarios, one of the optical nuclei hosts an unobscured AGN, while the other one, either an obscured AGN or a star-forming compact region. The X-ray Chandra data allow us to unambiguously resolve the X-ray emission and unveil the nature of the two optical sources in CID-42. We find that only one of the optical nuclei is responsible for the whole X-ray unobscured emission observed and a 3 sigma upper limit on the flux of the second optical nucleus is measured. The upper limit on the X-ray luminosity plus the analysis of the multiwavelength spectral energy distribution indicate the presence of a star-forming region in the second source rather than an obscured SMBH, thus favoring the GW recoil scenario. However, the presence of a very obscured SMBH cannot be fully ruled out. A new X-ray feature, in a SW direction with respect to the main source, is discovered and discussed. C1 [Civano, F.; Elvis, M.; Lanzuisi, G.; Aldcroft, T.; Trichas, M.; Fruscione, A.] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. [Lanzuisi, G.; Piconcelli, E.] INAF Osservatorio Astron Roma, I-00040 Monte Porzio Catone, Italy. [Lanzuisi, G.; Bongiorno, A.; Brusa, M.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. [Blecha, L.; Loeb, A.] Harvard Univ, Dept Astron, Cambridge, MA 02138 USA. [Comastri, A.; Gilli, R.] INAF Osservatorio Astron Bologna, I-40127 Bologna, Italy. [Salvato, M.; Komossa, S.] Max Planck Inst Plasma Phys, D-85748 Garching, Germany. [Koekemoer, A.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Komossa, S.] Tech Univ Munich, Fak Fuer Phys, D-85748 Garching, Germany. [Komossa, S.] Excellence Cluster Universe, D-85748 Garching, Germany. [Mainieri, V.] ESO, D-85748 Garching, Germany. [Piconcelli, E.] ESA, XMM Newton Sci Operat Ctr, Villanueva De La Canada 28691, Spain. [Vignali, C.] Univ Bologna, Dipartimento Astron, I-40127 Bologna, Italy. [Komossa, S.] Max Planck Inst Radioastron, D-53121 Bonn, Germany. RP Civano, F (reprint author), Smithsonian Astrophys Observ, 60 Garden St, Cambridge, MA 02138 USA. RI Vignali, Cristian/J-4974-2012; Lanzuisi, Giorgio/K-4378-2013; Comastri, Andrea/O-9543-2015; Gilli, Roberto/P-1110-2015; OI Brusa, Marcella/0000-0002-5059-6848; Vignali, Cristian/0000-0002-8853-9611; Koekemoer, Anton/0000-0002-6610-2048; Lanzuisi, Giorgio/0000-0001-9094-0984; Comastri, Andrea/0000-0003-3451-9970; Gilli, Roberto/0000-0001-8121-6177; Bongiorno, Angela/0000-0002-0101-6624; piconcelli, enrico/0000-0001-9095-2782 FU NASA [GO7-8136A]; Blancheflor Boncompagni Ludovisi foundation; Smithsonian Scholarly Studies FX F.C. thanks A. Marinucci, A. Goulding, V. Kashyap, and E. Schinnerer for useful discussions on the X-ray data. The authors thank the referee for the useful suggestions which improved the quality of the manuscript. This work was supported by the NASA Chandra grant GO7-8136A, the Blancheflor Boncompagni Ludovisi foundation, and the Smithsonian Scholarly Studies. NR 53 TC 28 Z9 28 U1 2 U2 7 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUN 10 PY 2012 VL 752 IS 1 AR 49 DI 10.1088/0004-637X/752/1/49 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961KN UT WOS:000305463400049 ER PT J AU Godet, O Plazolles, B Kawaguchi, T Lasota, JP Barret, D Farrell, SA Braito, V Servillat, M Webb, N Gehrels, N AF Godet, O. Plazolles, B. Kawaguchi, T. Lasota, J. -P. Barret, D. Farrell, S. A. Braito, V. Servillat, M. Webb, N. Gehrels, N. TI INVESTIGATING SLIM DISK SOLUTIONS FOR HLX-1 IN ESO 243-49 SO ASTROPHYSICAL JOURNAL LA English DT Article DE accretion, accretion disks; black hole physics; galaxies: individual (ESO 243-49); methods: data analysis; X-rays: individuals (HLX-1) ID X-RAY SOURCES; MASS BLACK-HOLE; SPECTRAL STATE TRANSITIONS; NOVA MUSCAE 1991; ACCRETION DISKS; VARIABILITY; BINARIES; MODEL; IRRADIATION; EVOLUTION AB The hyperluminous X-ray source HLX-1 in the galaxy ESO 243-49, currently the best intermediate-mass black hole (BH) candidate, displays spectral transitions similar to those observed in Galactic BH binaries, but with a luminosity 100-1000 times higher. We investigated the X-ray properties of this unique source by fitting multiepoch data collected by Swift, XMM-Newton, and Chandra with a disk model computing spectra for a wide range of sub- and super-Eddington accretion rates assuming a non-spinning BH and a face-on disk (i = 0 degrees). Under these assumptions we find that the BH in HLX-1 is in the intermediate-mass range (similar to 2 x 10(4) M-circle dot) and the accretion flow is in the sub-Eddington regime. The disk radiation efficiency is eta = 0.11 +/- 0.03. We also show that the source does follow the L-X alpha T-4 relation for our mass estimate. At the outburst peaks, the source radiates near the Eddington limit. The accretion rate then stays constant around 4 x 10(-4) M-circle dot yr(-1) for several days and then decreases exponentially. Such "plateaus" in the accretion rate could be evidence that enhanced mass-transfer rate is the driving outburst mechanism in HLX-1. We also report on the new outburst observed in 2011 August by the Swift X-Ray Telescope. The time of this new outburst further strengthens the similar to 1 year recurrence timescale. C1 [Godet, O.; Plazolles, B.; Barret, D.; Webb, N.] Univ Toulouse, UPS, IRAP, F-31028 Toulouse 4, France. [Godet, O.; Plazolles, B.; Barret, D.; Webb, N.] CNRS, UMR5277, F-31028 Toulouse, France. [Kawaguchi, T.] Univ Tsukuba, Ctr Computat Sci, Tsukuba, Ibaraki 3058577, Japan. [Lasota, J. -P.] Univ Paris 06, Inst Astrophys Paris, CNRS, UMR 7095, F-75014 Paris, France. [Lasota, J. -P.] Jagiellonian Univ, Astron Observ, PL-30244 Krakow, Poland. [Farrell, S. A.; Braito, V.] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England. [Farrell, S. A.] Univ Sydney, Sch Phys A29, Sydney Inst Astron, Sydney, NSW 2006, Australia. [Servillat, M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Gehrels, N.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. RP Godet, O (reprint author), Univ Toulouse, UPS, IRAP, 9 Ave Colonel Roche, F-31028 Toulouse 4, France. OI Braito, Valentina/0000-0002-2629-4989 FU NASA [GO0-11063X, DD0-11050X]; NSF [AST-0909073]; UK Science and Technology Funding Council; Australian Research Council [DP110102889]; UK STFC research council; French Space Agency CNES FX We thank the anonymous referee for his useful comments that helped to improve the paper. We are grateful to Ken Ebisawa and Takashi Okajima for creating a new fits model for XSPEC incorporating the extended black hole mass ranges. We thank Shane Davis for his useful suggestions during the writing of this paper. M.S. acknowledges supports from NASA/Chandra Grants GO0-11063X, DD0-11050X and NSF Grant AST-0909073. S.A.F. acknowledges funding from the UK Science and Technology Funding Council. S.A.F. is the recipient of an Australian Research Council Postdoctoral Fellowship, funded by grant DP110102889. V.B. acknowledge support from the UK STFC research council. J.P.L. acknowledges support from the French Space Agency CNES. NR 60 TC 28 Z9 28 U1 1 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 10 PY 2012 VL 752 IS 1 AR 34 DI 10.1088/0004-637X/752/1/34 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961KN UT WOS:000305463400034 ER PT J AU Hsu, WH Hartmann, L Allen, L Hernandez, J Megeath, ST Mosby, G Tobin, JJ Espaillat, C AF Hsu, Wen-Hsin Hartmann, Lee Allen, Lori Hernandez, Jesus Megeath, S. T. Mosby, Gregory Tobin, John J. Espaillat, Catherine TI THE LOW-MASS STELLAR POPULATION IN L1641: EVIDENCE FOR ENVIRONMENTAL DEPENDENCE OF THE STELLAR INITIAL MASS FUNCTION SO ASTROPHYSICAL JOURNAL LA English DT Article DE stars: formation; stars: low-mass; stars: luminosity function, mass function; stars: pre-main sequence; surveys ID ORION NEBULA CLUSTER; MULTICOLOR OPTICAL SURVEY; TAURUS-AURIGA; MULTIOBJECT SPECTROGRAPH; MOLECULAR CLOUD; STARS; REGION; CLASSIFICATION; HECTOSPEC; COLORS AB We present results from an optical photometric and spectroscopic survey of the young stellar population in L1641, the low-density star-forming region of the Orion A cloud south of the Orion Nebula Cluster (ONC). Our goal is to determine whether L1641 has a large enough low-mass population to make the known lack of high-mass stars a statistically significant demonstration of environmental dependence of the upper mass stellar initial mass function (IMF). Our spectroscopic sample consists of IR-excess objects selected from the Spitzer/IRAC survey and non-excess objects selected from optical photometry. We have spectral confirmation of 864 members, with another 98 probable members; of the confirmed members, 406 have infrared excesses and 458 do not. Assuming the same ratio of stars with and without IR excesses in the highly extincted regions, L1641 may contain as many as similar to 1600 stars down to similar to 0.1 M-circle dot, comparable within a factor of two to the ONC. Compared to the standard models of the IMF, L1641 is deficient in O and early B stars to a 3 sigma-4 sigma significance level, assuming that we know of all the massive stars in L1641. With a forthcoming survey of the intermediate-mass stars, we will be in a better position to make a direct comparison with the neighboring, dense ONC, which should yield a stronger test of the dependence of the high-mass end of the stellar IMF on environment. C1 [Hsu, Wen-Hsin; Hartmann, Lee] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA. [Allen, Lori] Natl Opt Astron Observ, Tucson, AZ 85719 USA. [Hernandez, Jesus] Ctr Invest Astron, Merida 5101 A, Venezuela. [Megeath, S. T.] Univ Toledo, Dept Phys & Astron, Toledo, OH 43606 USA. [Mosby, Gregory] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA. [Tobin, John J.] Natl Radio Astron Observ, Charlottesville, VA 22903 USA. [Espaillat, Catherine] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Hsu, WH (reprint author), Univ Michigan, Dept Astron, 500 Church St, Ann Arbor, MI 48109 USA. FU NSF [AST-0807305]; Origins [NNX08AI39G]; Smithsonian Astrophysical Observatory FX We thank the referee for helpful suggestions to improve the manuscript. W. H. and L. H. acknowledge the support of NSF Grant AST-0807305 and the Origins Grant NNX08AI39G. This paper uses data obtained at the MMT Observatory, a joint facility of the Smithsonian Institution and the University of Arizona, and the 6.5 m Magellan Telescopes located at Las Campanas Observatory, Chile. This paper uses data products produced by the OIR Telescope Data Center, supported by the Smithsonian Astrophysical Observatory. NR 51 TC 26 Z9 26 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 10 PY 2012 VL 752 IS 1 AR 59 DI 10.1088/0004-637X/752/1/59 PG 18 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961KN UT WOS:000305463400059 ER PT J AU Hwang, HS Geller, MJ Diaferio, A Rines, KJ AF Hwang, Ho Seong Geller, Margaret J. Diaferio, Antonaldo Rines, Kenneth J. TI A WISE VIEW OF A NEARBY SUPERCLUSTER A2199 SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: clusters: individual (Abell 2199); galaxies: evolution; galaxies: formation; galaxies: luminosity function, mass function; infrared: galaxies ID DIGITAL SKY SURVEY; STAR-FORMING GALAXIES; INFRARED LUMINOSITY FUNCTION; ACTIVE GALACTIC NUCLEI; COLOR-MAGNITUDE RELATION; H-ALPHA; COMA CLUSTER; MU-M; ENVIRONMENTAL DEPENDENCE; STELLAR POPULATIONS AB We use Wide-field Infrared Survey Explorer (WISE) data covering the entire region (similar to 130 deg(2)) of the A2199 supercluster at z = 0.03 to study the mid-infrared (MIR) properties of supercluster galaxies. We identify an "MIR star-forming sequence" in the WISE [3.4]-[12] color-12 mu m luminosity diagram, consisting of late-type, star-forming galaxies. At a fixed star formation rate, the MIR-detected galaxies at 22 mu m or 12 mu m tend to be more metal-rich and to have higher surface brightness than those without MIR detection. Using these MIR-detected galaxies, we construct the IR luminosity function (LF) and investigate its environmental dependence. Both total IR (TIR) and 12 mu m LFs are dominated by late-type, star-forming galaxies. The contribution of active galactic nucleus host galaxies increases with both TIR and 12 mu m luminosities. The contribution of early-type galaxies to the 12 mu m LFs increases with decreasing luminosity. The faint-end slope of the TIR LFs does not change with environment, but the change of faint-end slope in the 12 mu m LFs with the environment is significant: there is a steeper faint-end slope in the cluster core than in the cluster outskirts. This steepening results primarily from the increasing contribution of early-type galaxies toward the cluster. These galaxies are passively evolving, and contain old stellar populations with weak MIR emission from the circumstellar dust around asymptotic giant branch stars. C1 [Hwang, Ho Seong; Geller, Margaret J.] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. [Diaferio, Antonaldo] Univ Torino, Dipartimento Fis, I-10125 Turin, Italy. [Diaferio, Antonaldo] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy. [Rines, Kenneth J.] Western Washington Univ, Dept Phys & Astron, Bellingham, WA 98225 USA. RP Hwang, HS (reprint author), Smithsonian Astrophys Observ, 60 Garden St, Cambridge, MA 02138 USA. EM hhwang@cfa.harvard.edu; mgeller@cfa.harvard.edu; diaferio@ph.unito.it; kenneth.rines@wwu.edu FU Smithsonian Institution; INFN [PD51]; MIUR [2008NR3EBK_003]; Cottrell College Science Award from the Research Corporation; National Aeronautics and Space Administration FX We thank the anonymous referee for constructive comments that helped us to improve the manuscript. We thank Scott Kenyon for carefully reading the manuscript. We also thank Gwang-Ho Lee, David Elbaz, Jongwan Ko, Minjin Kim, Jong Chul Lee, Jubee Sohn, and Hyunjin Shim for useful discussion. H. S. H. acknowledges the Smithsonian Institution for the support of his post-doctoral fellowship. The Smithsonian Institution also supports M.J.G.'s research. A. D. acknowledges partial support from the INFN grant PD51 and the PRIN-MIUR-2008 grant 2008NR3EBK_003 "Matter-antimatter asymmetry, dark matter and dark energy in the LHC era." K. R. was funded in part by a Cottrell College Science Award from the Research Corporation. This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. NR 112 TC 15 Z9 15 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 10 PY 2012 VL 752 IS 1 AR 64 DI 10.1088/0004-637X/752/1/64 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961KN UT WOS:000305463400064 ER PT J AU Kelly, BC Shetty, R Stutz, AM Kauffmann, J Goodman, AA Launhardt, R AF Kelly, Brandon C. Shetty, Rahul Stutz, Amelia M. Kauffmann, Jens Goodman, Alyssa A. Launhardt, Ralf TI DUST SPECTRAL ENERGY DISTRIBUTIONS IN THE ERA OF HERSCHEL AND PLANCK: A HIERARCHICAL BAYESIAN-FITTING TECHNIQUE SO ASTROPHYSICAL JOURNAL LA English DT Article DE infrared: ISM; ISM: structure; methods: data analysis; methods: statistical; stars: formation ID STAR-FORMING CORES; T-TAURI STARS; TEMPERATURE-DEPENDENCE; PROTOPLANETARY DISKS; INFRARED GALAXIES; SILICATE GRAINS; SUBMILLIMETER; INDEX; MASS; EMISSIVITY AB We present a hierarchical Bayesian method for fitting infrared spectral energy distributions (SEDs) of dust emission to observed fluxes. Under the standard assumption of optically thin single temperature (T) sources, the dust SED as represented by a power-law-modified blackbody is subject to a strong degeneracy between T and the spectral index beta. The traditional non-hierarchical approaches, typically based on chi(2) minimization, are severely limited by this degeneracy, as it produces an artificial anti-correlation between T and beta even with modest levels of observational noise. The hierarchical Bayesian method rigorously and self-consistently treats measurement uncertainties, including calibration and noise, resulting in more precise SED fits. As a result, the Bayesian fits do not produce any spurious anti-correlations between the SED parameters due to measurement uncertainty. We demonstrate that the Bayesian method is substantially more accurate than the chi(2) fit in recovering the SED parameters, as well as the correlations between them. As an illustration, we apply our method to Herschel and submillimeter ground-based observations of the star-forming Bok globule CB244. This source is a small, nearby molecular cloud containing a single low-mass protostar and a starless core. We find that T and beta are weakly positively correlated-in contradiction with the chi(2) fits, which indicate a T-beta anti-correlation from the same data set. Additionally, in comparison to the chi(2) fits the Bayesian SED parameter estimates exhibit a reduced range in values. C1 [Kelly, Brandon C.; Goodman, Alyssa A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Kelly, Brandon C.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. [Shetty, Rahul] Univ Heidelberg, Zentrum Astron, Inst Theoret Astrophys, D-69120 Heidelberg, Germany. [Stutz, Amelia M.; Launhardt, Ralf] Max Planck Inst Astron, D-69117 Heidelberg, Germany. [Kauffmann, Jens] NASA JPL, Pasadena, CA 91109 USA. RP Kelly, BC (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. RI Goodman, Alyssa/A-6007-2010; OI Goodman, Alyssa/0000-0003-1312-0477; Stutz, Amelia/0000-0003-2300-8200 FU National Science Foundation [AST-0908159]; NASA through Space Telescope Science Institute [HF-01220.01, HF-51243.01]; Southern California Center for Galaxy Evolution; University of California Office of Research; German Bundesministerium fur Bildung und Forschung via the ASTRONET project STAR FORMAT [05A09VHA]; NASA [NAS 5-26555]; The Milky Way System [SFB 881] FX We are grateful to Scott Schnee, David Hogg, Karin Sandstrom, Cornelis Dullemond, Chris Beaumont, Paul Clark, Ralf Klessen, Bruce Draine, Jonathan Foster, Xiao-Li Meng, Alexander Blocker, and Chris Hayward for useful discussions regarding dust emission and Bayesian inference. We are also grateful to an anonymous referee whose suggestions for additional tests helped improve the paper. This material is based upon work supported by the National Science Foundation under grant No. AST-0908159. B. K. acknowledges support by NASA through Hubble Fellowship grants HF-01220.01 and HF-51243.01 awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS 5-26555, and from the Southern California Center for Galaxy Evolution, a multi-campus research program funded by the University of California Office of Research. R.S. is supported by the German Bundesministerium fur Bildung und Forschung via the ASTRONET project STAR FORMAT (grant 05A09VHA), and the SFB 881 "The Milky Way System." NR 53 TC 57 Z9 57 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 10 PY 2012 VL 752 IS 1 AR 55 DI 10.1088/0004-637X/752/1/55 PG 17 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961KN UT WOS:000305463400055 ER PT J AU Kocsis, B Ray, A Portegies Zwart, S AF Kocsis, Bence Ray, Alak Portegies Zwart, Simon TI MAPPING THE GALACTIC CENTER WITH GRAVITATIONAL WAVE MEASUREMENTS USING PULSAR TIMING SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: nuclei; gravitational waves; pulsars: general ID MASSIVE BLACK-HOLE; SAGITTARIUS-A-ASTERISK; DENSE STAR-CLUSTERS; BINARY-SYSTEMS; HYPERVELOCITY STARS; MILLISECOND PULSAR; GLOBULAR-CLUSTERS; STELLAR REMNANTS; RADIATION; SEGREGATION AB We examine the nHz gravitational wave (GW) foreground of stars and black holes (BHs) orbiting SgrA* in the Galactic center. A cusp of stars and BHs generates a continuous GW spectrum below 40 nHz; individual BHs within 1 mpc to SgrA* stick out in the spectrum at higher GW frequencies. The GWs and gravitational near-field effects can be resolved by timing pulsars within a few pc of this region. Observations with the Square Kilometer Array may be especially sensitive to intermediate-mass BHs in this region, if present. A 100 ns-10 mu s timing accuracy is sufficient to detect BHs of mass 1000 M-circle dot with pulsars at distance 0.1-1 pc in a 3 yr observation baseline. Unlike electromagnetic imaging techniques, the prospects for resolving individual objects through GW measurements improve closer to SgrA*, even if the number density of objects steeply increases inward. Scattering by the interstellar medium will pose the biggest challenge for such observations. C1 [Kocsis, Bence; Ray, Alak] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Ray, Alak] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India. [Portegies Zwart, Simon] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands. RP Kocsis, B (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM bkocsis@cfa.harvard.edu; akr@tifr.res.in; spz@strw.leidenuniv.nl RI Kocsis, Bence/C-3061-2013 OI Kocsis, Bence/0000-0002-4865-7517 FU NASA issued by the Chandra X-ray Observatory Center [PF9-00063]; National Aeronautics Space Administration [NAS8-03060]; Hungarian Research Fund OTKA [68228]; Netherlands Research Council NWO [639.073.803]; Netherlands Research School for Astronomy (NOVA); Tata Institute of Fundamental Research (TIFR) [11P-409]; ITC FX B.K. acknowledges support from NASA through Einstein Postdoctoral Fellowship Award Number PF9-00063 issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics Space Administration under contract NAS8-03060. A. R. thanks the Director and members of the Institute for Theory and Computation (ITC), Harvard University for hospitality. He also thanks Woldek Kluzniak, Duncan Lorimer, and Maura McLaughlin for discussions. This work was supported by the Hungarian Research Fund OTKA (grant 68228), Netherlands Research Council NWO (grant no. 639.073.803), the Netherlands Research School for Astronomy (NOVA), the Eleventh Five Year Plan Project No. 11P-409 at Tata Institute of Fundamental Research (TIFR), and by funding from the ITC for a sabbatical visit of A.R. NR 78 TC 10 Z9 10 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUN 10 PY 2012 VL 752 IS 1 AR 67 DI 10.1088/0004-637X/752/1/67 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961KN UT WOS:000305463400067 ER PT J AU Lehmer, BD Xue, YQ Brandt, WN Alexander, DM Bauer, FE Brusa, M Comastri, A Gilli, R Hornschemeier, AE Luo, B Paolillo, M Ptak, A Shemmer, O Schneider, DP Tozzi, P Vignali, C AF Lehmer, B. D. Xue, Y. Q. Brandt, W. N. Alexander, D. M. Bauer, F. E. Brusa, M. Comastri, A. Gilli, R. Hornschemeier, A. E. Luo, B. Paolillo, M. Ptak, A. Shemmer, O. Schneider, D. P. Tozzi, P. Vignali, C. TI THE 4 Ms CHANDRA DEEP FIELD-SOUTH NUMBER COUNTS APPORTIONED BY SOURCE CLASS: PERVASIVE ACTIVE GALACTIC NUCLEI AND THE ASCENT OF NORMAL GALAXIES SO ASTROPHYSICAL JOURNAL LA English DT Article DE cosmology: observations; galaxies: active; galaxies: starburst; X-rays: galaxies ID X-RAY-EMISSION; STAR-FORMATION HISTORY; LUMINOUS INFRARED GALAXIES; LYMAN BREAK GALAXIES; SIMILAR-TO 1; XMM-NEWTON; SOURCE CATALOG; STELLAR-MASS; MULTIWAVELENGTH PROJECT; HIGH-REDSHIFT AB We present 0.5-2 keV, 2-8 keV, 4-8 keV, and 0.5-8 keV (hereafter soft, hard, ultra-hard, and full bands, respectively) cumulative and differential number-count (log N-log S) measurements for the recently completed approximate to 4 Ms Chandra Deep Field-South (CDF-S) survey, the deepest X-ray survey to date. We implement a new Bayesian approach, which allows reliable calculation of number counts down to flux limits that are factors of approximate to 1.9-4.3 times fainter than the previously deepest number-count investigations. In the soft band (SB), the most sensitive bandpass in our analysis, the approximate to 4 Ms CDF-S reaches a maximum source density of approximate to 27,800 deg(-2). By virtue of the exquisite X-ray and multiwavelength data available in the CDF-S, we are able to measure the number counts from a variety of source populations (active galactic nuclei (AGNs), normal galaxies, and Galactic stars) and subpopulations (as a function of redshift, AGN absorption, luminosity, and galaxy morphology) and test models that describe their evolution. We find that AGNs still dominate the X-ray number counts down to the faintest flux levels for all bands and reach a limiting SB source density of approximate to 14,900 deg(-2), the highest reliable AGN source density measured at any wavelength. We find that the normal-galaxy counts rise rapidly near the flux limits and, at the limiting SB flux, reach source densities of approximate to 12,700 deg(-2) and make up 46% +/- 5% of the total number counts. The rapid rise of the galaxy counts toward faint fluxes, as well as significant normal-galaxy contributions to the overall number counts, indicates that normal galaxies will overtake AGNs just below the approximate to 4 Ms SB flux limit and will provide a numerically significant new X-ray source population in future surveys that reach below the approximate to 4 Ms sensitivity limit. We show that a future approximate to 10 Ms CDF-S would allow for a significant increase in X-ray-detected sources, with many of the new sources being cosmologically distant (z greater than or similar to 0.6) normal galaxies. C1 [Lehmer, B. D.] Johns Hopkins Univ, Baltimore, MD 21218 USA. [Lehmer, B. D.; Hornschemeier, A. E.; Ptak, A.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Xue, Y. Q.; Brandt, W. N.; Schneider, D. P.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA. [Xue, Y. Q.; Brandt, W. N.; Schneider, D. P.] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA. [Alexander, D. M.] Univ Durham, Dept Phys, Durham DH1 3LE, England. [Bauer, F. E.] Pontificia Univ Catolica Chile, Dept Astron & Astrofis, Santiago 22, Chile. [Brusa, M.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. [Comastri, A.; Gilli, R.] INAF Osservatorio Astron Bologna, I-40127 Bologna, Italy. [Luo, B.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Paolillo, M.] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy. [Shemmer, O.] Univ N Texas, Dept Phys, Denton, TX 76203 USA. [Tozzi, P.] INAF Osservatorio Astron Trieste, I-34131 Trieste, Italy. [Vignali, C.] Univ Bologna, Dipartimento Astron, I-40127 Bologna, Italy. RP Lehmer, BD (reprint author), Johns Hopkins Univ, Homewood Campus, Baltimore, MD 21218 USA. RI Paolillo, Maurizio/J-1733-2012; Vignali, Cristian/J-4974-2012; Brandt, William/N-2844-2015; Comastri, Andrea/O-9543-2015; Gilli, Roberto/P-1110-2015; OI Paolillo, Maurizio/0000-0003-4210-7693; Vignali, Cristian/0000-0002-8853-9611; Brandt, William/0000-0002-0167-2453; Comastri, Andrea/0000-0003-3451-9970; Gilli, Roberto/0000-0001-8121-6177; Shemmer, Ohad/0000-0003-4327-1460; Alexander, David/0000-0002-5896-6313; Brusa, Marcella/0000-0002-5059-6848 FU Einstein Fellowship Program; CXC [SP1-12007A, SAO SP1-12007B]; NASA ADP [NNX10AC99G]; Science and Technology Facilities Council; Financiamento Basal; CONICYT-Chile FONDECYT [1101024]; FONDAP-CATA [15010003]; ASI-INAF [I/088/06, I/009/10/0] FX We thank the anonymous referee for reviewing the manuscript and providing useful suggestions. We thank Andy Fabian for useful discussions and acknowledge James Aird, Hermann Brunner, Fabrizio Fiore, Simonetta Puccetti, and Shaji Vattakunnel for sharing data; these contributions have helped the quality of this paper. We gratefully acknowledge financial support from the Einstein Fellowship Program (B.D.L.), CXC grant SP1-12007A and NASA ADP grant NNX10AC99G (Y.Q.X. and W.N.B.), the Science and Technology Facilities Council (D.M.A.), Financiamento Basal, CONICYT-Chile FONDECYT 1101024 and FONDAP-CATA 15010003, and CXC grant SAO SP1-12007B (F.E.B.), and ASI-INAF grants I/088/06 and I/009/10/0 (A.C., R.G., C.V.). NR 98 TC 84 Z9 84 U1 1 U2 9 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 10 PY 2012 VL 752 IS 1 AR 46 DI 10.1088/0004-637X/752/1/46 PG 23 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961KN UT WOS:000305463400046 ER PT J AU Melnick, GJ Tolls, V Goldsmith, PF Kaufman, MJ Hollenbach, DJ Black, JH Encrenaz, P Falgarone, E Gerin, M Hjalmarson, A Li, D Lis, DC Liseau, R Neufeld, DA Pagani, L Snell, RL van der Tak, F van Dishoeck, EF AF Melnick, Gary J. Tolls, Volker Goldsmith, Paul F. Kaufman, Michael J. Hollenbach, David J. Black, John H. Encrenaz, Pierre Falgarone, Edith Gerin, Maryvonne Hjalmarson, Ake Li, Di Lis, Dariusz C. Liseau, Rene Neufeld, David A. Pagani, Laurent Snell, Ronald L. van der Tak, Floris van Dishoeck, Ewine F. TI HERSCHEL SEARCH FOR O-2 TOWARD THE ORION BAR SO ASTROPHYSICAL JOURNAL LA English DT Article DE astrochemistry; ISM: abundances; ISM: individual objects (Orion); ISM: molecules; submillimeter: ISM ID SUBMILLIMETER OBSERVATIONS; MOLECULAR CLOUDS; WATER ICE; INTERSTELLAR CHLORONIUM; THERMAL BALANCE; CHEMICAL-MODELS; PHOTODESORPTION; EMISSION; MILLIMETER; REGION AB We report the results of a search for molecular oxygen (O-2) toward the Orion Bar, a prominent photodissociation region at the southern edge of the HII region created by the luminous Trapezium stars. We observed the spectral region around the frequency of the O-2 N-J = 3(3)-1(2) transition at 487 GHz and the 5(4)-3(4) transition at 774 GHz using the Heterodyne Instrument for the Far-Infrared on the Herschel Space Observatory. Neither line was detected, but the 3 sigma upper limits established here translate to a total line-of-sight O-2 column density <1.5 x 10(16) cm(-2) for an emitting region whose temperature is between 30 K and 250 K, or <1 x 10(16) cm(-2) if the O-2 emitting region is primarily at a temperature of less than or similar to 100 K. Because the Orion Bar is oriented nearly edge-on relative to our line of sight, the observed column density is enhanced by a factor estimated to be between 4 and 20 relative to the face-on value. Our upper limits imply that the face-on O-2 column density is less than 4 x 10(15) cm(-2), a value that is below, and possibly well below, model predictions for gas with a density of 10(4)-10(5) cm-(3) exposed to a far-ultraviolet flux 10(4) times the local value, conditions inferred from previous observations of the Orion Bar. The discrepancy might be resolved if (1) the adsorption energy of O atoms to ice is greater than 800 K; (2) the total face-on AV of the Bar is less than required for O-2 to reach peak abundance; (3) the O-2 emission arises within dense clumps with a small beam filling factor; or (4) the face-on depth into the Bar where O-2 reaches its peak abundance, which is density dependent, corresponds to a sky position different from that sampled by our Herschel beams. C1 [Melnick, Gary J.; Tolls, Volker] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Goldsmith, Paul F.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Kaufman, Michael J.] San Jose State Univ, Dept Phys & Astron, San Jose, CA 95192 USA. [Hollenbach, David J.] SETI Inst, Mountain View, CA 94043 USA. [Black, John H.; Hjalmarson, Ake; Liseau, Rene] Chalmers, Dept Earth & Space Sci, Onsala Space Observ, SE-43992 Onsala, Sweden. [Encrenaz, Pierre; Pagani, Laurent] Observ Paris, LERMA, F-75014 Paris, France. [Encrenaz, Pierre; Pagani, Laurent] Observ Paris, CNRS, UMR8112, LRA LERMA, F-75014 Paris, France. [Falgarone, Edith; Gerin, Maryvonne] Observ Paris, CNRS, UMR8112, LRA LERMA, F-75231 Paris 05, France. [Falgarone, Edith; Gerin, Maryvonne] Ecole Normale Super, F-75231 Paris 05, France. [Li, Di] Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China. [Lis, Dariusz C.] CALTECH, Cahill Ctr Astron & Astrophys, Pasadena, CA 91125 USA. [Neufeld, David A.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. [Snell, Ronald L.] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA. [van der Tak, Floris] SRON Netherlands Inst Space Res, NL-9700 AV Groningen, Netherlands. [van der Tak, Floris] Univ Groningen, Kapteyn Astron Inst, Groningen, Netherlands. [van Dishoeck, Ewine F.] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands. [van Dishoeck, Ewine F.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. RP Melnick, GJ (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St,MS 66, Cambridge, MA 02138 USA. RI Goldsmith, Paul/H-3159-2016 FU NASA through JPL/Caltech FX Support for this work was provided by NASA through an award issued by JPL/Caltech. NR 46 TC 19 Z9 19 U1 1 U2 10 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 10 PY 2012 VL 752 IS 1 AR 26 DI 10.1088/0004-637X/752/1/26 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961KN UT WOS:000305463400026 ER PT J AU Myers, PC AF Myers, Philip C. TI MASS AND LUMINOSITY EVOLUTION OF YOUNG STELLAR OBJECTS SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM: clouds; stars: formation ID STAR CLUSTER FORMATION; RADIATION-HYDRODYNAMIC SIMULATIONS; INTERSTELLAR CLOUDS; MOLECULAR CLOUDS; FORMING REGION; SPITZER SURVEY; DENSE CORES; INITIAL CONDITIONS; EMBEDDED CLUSTERS; DISK POPULATION AB A model of protostar mass and luminosity evolution in clusters gives new estimates of cluster age, protostar birthrate, accretion rate, and mean accretion time. The model assumes constant protostar birthrate, core-clump accretion, and equally likely accretion stopping. Its parameters are set to reproduce the initial mass function and to match protostar luminosity distributions in nearby star-forming regions. It obtains cluster ages and birthrates from the observed numbers of protostars and pre-main sequence (PMS) stars, and from the modal value of the protostar luminosity. In 31 embedded clusters and complexes, the global cluster age is 1-3 Myr, matching available estimates based on optical spectroscopy (OS) and evolutionary tracks. This method of age estimation is simpler than OS and is more useful for young embedded clusters where optical spectroscopy is not possible. In the youngest clusters, the protostar fraction decreases outward from the densest gas, indicating that the local star-forming age increases outward from a few 0.1 Myr in small protostar-dominated zones to a few Myr in large PMS-dominated zones. C1 Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Myers, PC (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM pmyers@cfa.harvard.edu NR 86 TC 20 Z9 20 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUN 10 PY 2012 VL 752 IS 1 AR 9 DI 10.1088/0004-637X/752/1/9 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961KN UT WOS:000305463400009 ER PT J AU Riess, AG Macri, L Casertano, S Lampeitl, H Ferguson, HC Filippenko, AV Jha, SW Li, WD Chornock, R Silverman, JM AF Riess, Adam G. Macri, Lucas Casertano, Stefano Lampeitl, Hubert Ferguson, Henry C. Filippenko, Alexei V. Jha, Saurabh W. Li, Weidong Chornock, Ryan Silverman, Jeffrey M. TI A 3% SOLUTION: DETERMINATION OF THE HUBBLE CONSTANT WITH THE HUBBLE SPACE TELESCOPE AND WIDE FIELD CAMERA 3 (vol 730, pg 119, 2011) SO ASTROPHYSICAL JOURNAL LA English DT Correction C1 [Riess, Adam G.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. [Riess, Adam G.; Casertano, Stefano; Ferguson, Henry C.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Macri, Lucas] Texas A&M Univ, Dept Phys & Astron, George P & Cynthia Woods Mitchell Inst Fundamenta, College Stn, TX 77843 USA. [Lampeitl, Hubert] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England. [Filippenko, Alexei V.; Li, Weidong; Silverman, Jeffrey M.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Jha, Saurabh W.] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA. [Chornock, Ryan] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Riess, AG (reprint author), Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. NR 2 TC 14 Z9 14 U1 0 U2 7 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 10 PY 2012 VL 752 IS 1 AR 76 DI 10.1088/0004-637X/752/1/76 PG 1 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961KN UT WOS:000305463400076 ER PT J AU Sun, MY Liu, T Gu, WM Lu, JF AF Sun, Mou-Yuan Liu, Tong Gu, Wei-Min Lu, Ju-Fu TI GRAVITATIONAL WAVES OF JET PRECESSION IN GAMMA-RAY BURSTS SO ASTROPHYSICAL JOURNAL LA English DT Article DE accretion, accretion disks; black hole physics; gamma-ray burst: general; gravitational waves ID NEUTRINO-DOMINATED ACCRETION; BLACK-HOLES; OBSERVATIONAL EVIDENCE; GALACTIC NUCLEI; LIGHT CURVES; DISKS; DRIVEN; MODELS; LUMINOSITY; PHYSICS AB The physical nature of gamma-ray bursts (GRBs) is believed to involve an ultra-relativistic jet. The observed complex structure of light curves motivates the idea of jet precession. In this work, we study the gravitational waves of jet precession based on neutrino-dominated accretion disks around black holes, which may account for the central engine of GRBs. In our model, the jet and the inner part of the disk may precess along with the black hole, which is driven by the outer part of the disk. Gravitational waves are therefore expected to be significant from this black-hole-inner-disk precession system. By comparing our numerical results with the sensitivity of some detectors, we find that it is possible for DECIGO and BBO to detect such gravitational waves, particularly for GRBs in the Local Group. C1 [Sun, Mou-Yuan; Liu, Tong; Gu, Wei-Min; Lu, Ju-Fu] Xiamen Univ, Dept Phys, Xiamen 361005, Fujian, Peoples R China. [Sun, Mou-Yuan; Liu, Tong; Gu, Wei-Min; Lu, Ju-Fu] Xiamen Univ, Inst Theoret Phys & Astrophys, Xiamen 361005, Fujian, Peoples R China. [Gu, Wei-Min] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Liu, T (reprint author), Xiamen Univ, Dept Phys, Xiamen 361005, Fujian, Peoples R China. EM tongliu@xmu.edu.cn RI Gu, WM/G-3984-2010; OI Sun, Mouyuan/0000-0002-0771-2153 FU National Basic Research Program (973 Program) of China [2009CB824800]; National Natural Science Foundation of China [10833002, 11073015, 11103015] FX We thank the anonymous referee for very useful suggestions and comments. We thank Ye-Fei Yuan, Matias M. Reynoso, and Gustavo E. Romero for beneficial discussions. This work was supported by the National Basic Research Program (973 Program) of China under grant 2009CB824800, and the National Natural Science Foundation of China under grants 10833002, 11073015, and 11103015. NR 43 TC 19 Z9 19 U1 0 U2 7 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUN 10 PY 2012 VL 752 IS 1 AR 31 DI 10.1088/0004-637X/752/1/31 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961KN UT WOS:000305463400031 ER PT J AU Takahashi, S Saigo, K Ho, PTP Tomida, K AF Takahashi, Satoko Saigo, Kazuya Ho, Paul T. P. Tomida, Kengo TI SPATIALLY RESOLVING SUBSTRUCTURES WITHIN THE MASSIVE ENVELOPE AROUND AN INTERMEDIATE-MASS PROTOSTAR: MMS 6/OMC-3 SO ASTROPHYSICAL JOURNAL LA English DT Article DE evolution; ISM: clouds; stars: formation; stars: individual (OMC3-MMS 6) ID MOLECULAR CLOUD CORE; STAR-FORMING REGIONS; STELLAR DENSITIES; GASEOUS DISKS; DENSE CORES; 1ST CORES; COLLAPSE; OUTFLOWS; ORION; FRAGMENTATION AB With the Submillimeter Array, the brightest (sub)millimeter continuum source in the Orion Molecular Cloud-2/3 region, MMS 6, has been observed in the 850 mu m continuum emission with approximately 10 times better angular resolution than previous studies (approximate to 0 ''.3, approximate to 120 AU at Orion). The deconvolved size, the mass, and the column density of MMS 6-main are estimated to be 0 ''.32 x 0 ''.29 (132 AU x 120 AU), 0.29 M-circle dot, and 2.1 x 10(25) cm(-2), respectively. The estimated extremely high mean number density, 1.5 x 10(10) cm(-3), suggests that MMS 6-main is likely optically thick at 850 mu m. We compare our observational data with three theoretical core models: prestellar core, protostellar core + disk-like structure, and first adiabatic core. These comparisons clearly show that the observational data cannot be modeled as a simple prestellar core with a gas temperature of 20 K. A self-luminous source is necessary to explain the observed flux density in the (sub) millimeter wavelengths. Our recent detection of a very compact and energetic outflow in the CO (3-2) and HCN (4-3) lines supports the presence of a protostar. We suggest that MMS 6 is one of the first cases of an intermediate-mass protostellar core at an extremely young stage. In addition to the MMS 6-main peak, we have also spatially resolved a number of spiky structures and sub-clumps, distributed over the central 1000 AU. The masses of these sub-clumps are estimated to be 0.066-0.073 M-circle dot, which are on the order of brown dwarf masses. Higher angular resolution and higher sensitivity observations with ALMA and EVLA will reveal the origin and nature of these structures such as whether they are originated from fragmentations, spiral arms, or inhomogeneity within the disk-like structures/envelope. C1 [Takahashi, Satoko; Ho, Paul T. P.] Acad Sinica, Inst Astron & Astrophys, Taipei 106, Taiwan. [Saigo, Kazuya; Tomida, Kengo] Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan. [Ho, Paul T. P.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Tomida, Kengo] Grad Univ Adv Studies, Natl Astron Observ Japan, Dept Astron Sci, Mitaka, Tokyo 1818588, Japan. [Tomida, Kengo] Princeton Univ, Dept Astrophys, Princeton, NJ 08544 USA. RP Takahashi, S (reprint author), Acad Sinica, Inst Astron & Astrophys, POB 23-141, Taipei 106, Taiwan. EM satoko_t@asiaa.sinica.edu.tw OI Tomida, Kengo/0000-0001-8105-8113 FU Institute of Astronomy and Astrophysics, Academia Sinica, Taiwan; Japan Society for the Promotion of Science (JSPS) FX We thank our two anonymous referees for very helpful suggestions which improved the clarity and logic of the paper. We acknowledge the staff at the Submillimeter Array for their assistance with the observations. We thank Keiichi Asada for fruitful discussions. S. T. is financially supported by a postdoctoral fellowship at the Institute of Astronomy and Astrophysics, Academia Sinica, Taiwan. K. T. was supported by the Research Fellowship from the Japan Society for the Promotion of Science (JSPS) for Young Scientists. NR 48 TC 7 Z9 7 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 10 PY 2012 VL 752 IS 1 AR 10 DI 10.1088/0004-637X/752/1/10 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961KN UT WOS:000305463400010 ER PT J AU Wellons, S Soderberg, AM Chevalier, RA AF Wellons, Sarah Soderberg, Alicia M. Chevalier, Roger A. TI RADIO OBSERVATIONS REVEAL UNUSUAL CIRCUMSTELLAR ENVIRONMENTS FOR SOME TYPE Ibc SUPERNOVA PROGENITORS SO ASTROPHYSICAL JOURNAL LA English DT Article DE stars: winds, outflows; supernovae: general ID GAMMA-RAY BURSTS; CORE-COLLAPSE SUPERNOVAE; LUMINOUS BLUE VARIABLES; MASSIVE STARS; IB/C SUPERNOVAE; IC SUPERNOVAE; PRESUPERNOVA EVOLUTION; BINARY PROGENITOR; LIGHT CURVES; SN 1993J AB We present extensive radio observations of the nearby Type Ibc supernovae (SNe Ibc) 2004cc, 2004dk, and 2004gq spanning Delta t approximate to 8-1900 days after explosion. Using a dynamical model developed for synchrotron emission from a slightly decelerated shock wave, we estimate the velocity and energy of the fastest ejecta and the density profile of the circumstellar medium. The shock waves of all three supernovae are characterized by non-relativistic velocities of (v) over bar approximate to (0.1-25)c and associated energies of E approximate to (2-10) x 10(47) erg, in line with the expectations for a typical homologous explosion. Smooth circumstellar density profiles are indicated by the early radio data and we estimate the progenitor mass-loss rates to be (M) over dot approximate to (0.6-13) x 10(-5) M-circle dot yr(-1) (wind velocity, v(w) = 10(3) km s(-1)). These estimates approach the saturation limit ((M) over dot approximate to 10(-4) M-circle dot yr(-1)) for line-driven winds from Wolf-Rayet stars, the favored progenitors of SNe Ibc including those associated with long-duration gamma-ray bursts. Intriguingly, at later epochs all three supernovae show evidence for abrupt radio variability that we attribute to large density modulations (factor of similar to 3-6) at circumstellar radii of r approximate to (1-50) x 10(16) cm. If due to variable mass loss, these modulations are associated with progenitor activity on a timescale of similar to 10-100 years before explosion. We consider these results in the context of variable mass-loss mechanisms including wind clumping, metallicity-independent continuum-driven ejections, and binary-induced modulations. It may also be possible that the SN shock waves are dynamically interacting with wind termination shocks; however, this requires the environment to be highly pressurized and/or the progenitor to be rapidly rotating prior to explosion. The proximity of the density modulations to the explosion sites may suggest a synchronization between unusual progenitor mass loss and the SN explosion, reminiscent of Type IIn supernovae. This study underscores the utility of radio observations for tracing the final evolutionary stage(s) of SN progenitor systems. C1 [Wellons, Sarah; Soderberg, Alicia M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Chevalier, Roger A.] Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA. RP Wellons, S (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. FU National Science Foundation Research Experiences for Undergraduates (REU); Department of Defense [0754568]; Smithsonian Institution FX We thank our anonymous referees, Norbert Langer, Stan Owocki, Nathan Smith, Vikram Dwarkadas, and Shri Kulkarni, for helpful discussions. S. W. and A. M. S. acknowledge support by the National Science Foundation Research Experiences for Undergraduates (REU) and Department of Defense Awards to Stimulate and Support Undergraduate Research Experiences (ASSURE) programs under grant no. 0754568 and by the Smithsonian Institution. NR 109 TC 23 Z9 23 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 10 PY 2012 VL 752 IS 1 AR 17 DI 10.1088/0004-637X/752/1/17 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 961KN UT WOS:000305463400017 ER PT J AU Pe'er, A AF Pe'er, Asaf TI DYNAMICAL MODEL OF AN EXPANDING SHELL SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE hydrodynamics; ISM: jets and outflows; plasmas; shock waves ID GAMMA-RAY BURSTS; RELATIVISTIC BLAST WAVES; EQUITEMPORAL SURFACES; GRS 1915+105; AFTERGLOWS; EMISSION; JETS; SUPERNOVAE; FIREBALLS; SHOCKS AB Expanding blast waves are ubiquitous in many astronomical sources, such as supernova remnants, X-ray emitting binaries, and gamma-ray bursts. I consider here the dynamics of such an expanding blast wave, both in the adiabatic and the radiative regimes. As the blast wave collects material from its surroundings, it decelerates. A full description of the temporal evolution of the blast wave requires consideration of both the energy density and the pressure of the shocked material. The obtained equation is different from earlier works in which only the energy was considered. The solution converges to the familiar results in both the ultrarelativistic and the sub-relativistic (Newtonian) regimes. C1 Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Pe'er, A (reprint author), Harvard Smithsonian Ctr Astrophys, MS 51,60 Garden St, Cambridge, MA 02138 USA. NR 35 TC 18 Z9 18 U1 1 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD JUN 10 PY 2012 VL 752 IS 1 AR L8 DI 10.1088/2041-8205/752/1/L8 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 948FL UT WOS:000304488900008 ER PT J AU Ikegami, M Whigham, DF Werger, MJA AF Ikegami, Makihiko Whigham, Dennis F. Werger, Marinus J. A. TI Effects of local density of clonal plants on their sexual and vegetative propagation strategies in a lattice structure model SO ECOLOGICAL MODELLING LA English DT Article DE Clonal plant; Lattice model; Life history strategy; Vegetative propagation; Sexual propagation ID REPRODUCTIVE STRATEGIES; POPULATION-DYNAMICS; SEED REPRODUCTION; ALLOCATION; HABITAT; INTEGRATION; COMPETITION AB Clonal plants can propagate both sexually and vegetatively and the balance between the efforts of sexual and vegetative propagation can be determined by inter- and intra-specific competition. This raises the question of whether sexual propagation becomes more suitable than vegetative propagation or vice versa. Some studies suggest seed production is positively correlated with plant density, and others, negatively. To evaluate the effects of local density of ramets on plant propagation strategy, we developed a lattice model where two strategies compete with each other. In the model, a plant changes its strategy based on local density as defined by the proportion of neighboring lattice cells containing plants. One strategy produces seeds at high local density (SEEDING at HLD) and produces ramets at low local density, and the other strategy produces ramets at high local density (RAMETING at HLD) and seeds at low local density. Seeds can spread all cells while ramets can reach only adjacent cells, and if an individual from a seed competes with an individual from a vegetative propagule, the latter always wins. Each plant has different thresholds to change its strategy from sexual to vegetative, or vice versa, along with local density. In the model, a realized density depends on both reproductive rate and mortality; thus, we evaluate the performance of each strategy under different mortalities. When mortality is high, a realized density becomes low. Under this condition, plants reproduce mainly by seeds (either the SEEDING at HLD plants with lower threshold values, or RAMETING at HLD plants with higher threshold values) and show high performance. High mortality results in many vacant lattice cells that do not have neighboring plants. Since vegetative propagules cannot reach these isolated vacant lattice cells while seeds can, plants that propagate mostly or exclusively by seed become dominant. When mortality is low, the local density becomes high and few cells are available for new individuals. Under this condition, SEEDING at HLD becomes dominant. SEEDING at HLD plants with a high threshold value almost always reproduce ramets, but they also produce seeds when neighboring cells are completely occupied. Although SEEDING at HLD plants with a high threshold value and RAMETING at HLD plants have an equal chance to get established by vegetative propagation, SEEDING at HLD plants also produce seeds when there are no vacant neighboring cells (i.e., high density), and those seeds can, although rarely, establish new individuals. In conclusion, the production of ramets at lower densities and the production of seeds at higher densities seem to be a proper strategy in our model. (C) 2012 Published by Elsevier B.V. C1 [Ikegami, Makihiko; Werger, Marinus J. A.] Univ Utrecht, Dept Plant Ecol & Biodiversity, NL-3508 TB Utrecht, Netherlands. [Ikegami, Makihiko; Whigham, Dennis F.; Werger, Marinus J. A.] Smithsonian Environm Res Ctr, Edgewater, MD 21037 USA. [Whigham, Dennis F.] Univ Utrecht, Dept Landscape Ecol, NL-3508 TB Utrecht, Netherlands. RP Ikegami, M (reprint author), Univ Calif Santa Barbara, Donald Bren Sch Environm Sci & Management, Santa Barbara, CA 93106 USA. EM makihiko@mbox.kyoto-inet.or.jp RI IKEGAMI, Makihiko/E-6612-2012; OI Whigham, Dennis/0000-0003-1488-820X FU Andrew W. Mellon Foundation through the Smithsonian Institution; Faculty of Biology at Utrecht University FX We would like to thank Doug Bradley at UCSB and two anonymous reviewers for their comments to improve the readability of this manuscript. This study was financially supported by a grant to MJAW from the Andrew W. Mellon Foundation through the Smithsonian Institution and by the Faculty of Biology at Utrecht University. NR 41 TC 6 Z9 7 U1 2 U2 22 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-3800 J9 ECOL MODEL JI Ecol. Model. PD JUN 10 PY 2012 VL 234 SI SI BP 51 EP 59 DI 10.1016/j.ecolmodel.2012.03.026 PG 9 WC Ecology SC Environmental Sciences & Ecology GA 950GB UT WOS:000304636500006 ER PT J AU Xi, Z Bradley, RK Wurdack, KJ Wong, KM Sugumaran, M Bomblies, K Rest, JS Davis, CC AF Xi, Zhenxiang Bradley, Robert K. Wurdack, Kenneth J. Wong, K. M. Sugumaran, M. Bomblies, Kirsten Rest, Joshua S. Davis, Charles C. TI Horizontal transfer of expressed genes in a parasitic flowering plant SO BMC GENOMICS LA English DT Article DE Rafflesia; Transcriptome; Phylogenomics; Horizontal gene transfer; Codon usage ID GENOME SEQUENCE; DNA-SEQUENCES; CODON USAGE; EVOLUTION; ANGIOSPERMS; ANNOTATION; ALGORITHM; DISCOVERY; RESOURCE; EXCHANGE AB Background: Recent studies have shown that plant genomes have potentially undergone rampant horizontal gene transfer (HGT). In plant parasitic systems HGT appears to be facilitated by the intimate physical association between the parasite and its host. HGT in these systems has been invoked when a DNA sequence obtained from a parasite is placed phylogenetically very near to its host rather than with its closest relatives. Studies of HGT in parasitic plants have relied largely on the fortuitous discovery of gene phylogenies that indicate HGT, and no broad systematic search for HGT has been undertaken in parasitic systems where it is most expected to occur. Results: We analyzed the transcriptomes of the holoparasite Rafflesia cantleyi Solms-Laubach and its obligate host Tetrastigma rafflesiae Miq. using phylogenomic approaches. Our analyses show that several dozen actively transcribed genes, most of which appear to be encoded in the nuclear genome, are likely of host origin. We also find that hundreds of vertically inherited genes (VGT) in this parasitic plant exhibit codon usage properties that are more similar to its host than to its closest relatives. Conclusions: Our results establish for the first time a substantive number of HGTs in a plant host-parasite system. The elevated rate of unidirectional host-to- parasite gene transfer raises the possibility that HGTs may provide a fitness benefit to Rafflesia for maintaining these genes. Finally, a similar convergence in codon usage of VGTs has been shown in microbes with high HGT rates, which may help to explain the increase of HGTs in these parasitic plants. C1 [Rest, Joshua S.] SUNY Stony Brook, Dept Ecol & Evolut, Stony Brook, NY 11794 USA. [Xi, Zhenxiang; Bomblies, Kirsten; Davis, Charles C.] Harvard Univ Hebaria, Dept Organism & Evolut Biol, Cambridge, MA 02138 USA. [Bradley, Robert K.] Fred Hutchinson Canc Res Ctr, Div Publ Hlth Sci, Computat Biol Program, Seattle, WA 98109 USA. [Bradley, Robert K.] Fred Hutchinson Canc Res Ctr, Div Basic Sci, Seattle, WA 98109 USA. [Wurdack, Kenneth J.] Smithsonian Inst, Dept Bot, Washington, DC 20013 USA. [Wong, K. M.] Singapore Bot Gardens, Singapore 259569, Singapore. [Sugumaran, M.] Univ Malaya, Inst Biol Sci, Rimba Ilmu Bot Garden, Kuala Lumpur 50603, Malaysia. RP Rest, JS (reprint author), SUNY Stony Brook, Dept Ecol & Evolut, Stony Brook, NY 11794 USA. EM joshua.rest@stonybrook.edu; cdavis@oeb.harvard.edu RI MANICKAM, SUGUMARAN/B-5268-2010; OI Rest, Joshua/0000-0002-9582-1041; Bomblies, Kirsten/0000-0002-2434-3863; Bradley, Robert/0000-0002-8046-1063 FU National Science Foundation (NSF) Assembling the Tree of Life [DEB-0622764]; NSF [DEB-1120243] FX We thank Stijn van Dongen, Casey Dunn, Michael Ethier, Amir Karger, Devin Locke, Sergey Lukyanov, Evandro Novaes, Alexis Stamatakis, and Jiangwen Zhang for technical assistance. We also thank William Anderson, Mark Beilstein, Andrew Knoll, Christopher Marx, Sarah Mathews, Brian O'Meara, and members of the Davis laboratory for helpful discussions. CCD was supported by the National Science Foundation (NSF) Assembling the Tree of Life grant DEB-0622764 and NSF DEB-1120243. NR 45 TC 35 Z9 39 U1 4 U2 62 PU BIOMED CENTRAL LTD PI LONDON PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND SN 1471-2164 J9 BMC GENOMICS JI BMC Genomics PD JUN 8 PY 2012 VL 13 AR 227 DI 10.1186/1471-2164-13-227 PG 8 WC Biotechnology & Applied Microbiology; Genetics & Heredity SC Biotechnology & Applied Microbiology; Genetics & Heredity GA 014YK UT WOS:000309411700001 PM 22681756 ER PT J AU Wilson, JK Spence, HE Kasper, J Golightly, M Blake, JB Mazur, JE Townsend, LW Case, AW Looper, MD Zeitlin, C Schwadron, NA AF Wilson, Jody K. Spence, Harlan E. Kasper, Justin Golightly, Michael Blake, J. Bern Mazur, Joe E. Townsend, Lawrence W. Case, Anthony W. Looper, Mark Dixon Zeitlin, Cary Schwadron, Nathan A. TI The first cosmic ray albedo proton map of the Moon SO JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS LA English DT Article ID LUNAR PROSPECTOR; FAST-NEUTRONS; DEPOSITS; POLES AB Neutrons emitted from the Moon are produced by the impact of galactic cosmic rays (GCRs) within the regolith. GCRs are high-energy particles capable of smashing atomic nuclei in the lunar regolith and producing a shower of energetic protons, neutrons and other subatomic particles. Secondary particles that are ejected out of the regolith become "albedo" particles. The neutron albedo has been used to study the hydrogen content of the lunar regolith, which motivates our study of albedo protons. In principle, the albedo protons should vary as a function of the input GCR source and possibly as a result of surface composition and properties. During the LRO mission, the total detection rate of albedo protons between 60 MeV and 150 MeV has been declining since 2009 in parallel with the decline in the galactic cosmic ray flux, which validates the concept of an albedo proton source. On the other hand, the average yield of albedo protons has been increasing as the galactic cosmic ray spectrum has been hardening, consistent with a disproportionately stronger modulation of lower energy GCRs as solar activity increases. We construct the first map of the normalized albedo proton emission rate from the lunar surface to look for any albedo variation that correlates with surface features. The map is consistent with a spatially uniform albedo proton yield to within statistical uncertainties. C1 [Wilson, Jody K.; Golightly, Michael; Schwadron, Nathan A.] Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA. [Spence, Harlan E.] Univ New Hampshire, Inst Earth Oceans & Space, Durham, NH 03824 USA. [Kasper, Justin; Case, Anthony W.] Harvard Smithsonian Ctr Astrophys, High Energy Astrophys Div, Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. [Blake, J. Bern; Looper, Mark Dixon] Aerosp Corp, Dept Space Sci, Los Angeles, CA 90009 USA. [Mazur, Joe E.] Aerosp Corp, Space Sci Dept Chantilly, Chantilly, VA USA. [Townsend, Lawrence W.] Univ Tennessee, Dept Nucl Engn, Knoxville, TN 37996 USA. [Zeitlin, Cary] SW Res Inst, Boulder, CO USA. RP Wilson, JK (reprint author), Univ New Hampshire, Ctr Space Sci, Morse Hall Room 353,8 Coll Rd, Durham, NH 03824 USA. EM jody.wilson@unh.edu RI Spence, Harlan/A-1942-2011; Kasper, Justin/D-1152-2010; OI Kasper, Justin/0000-0002-7077-930X; Spence, Harlan/0000-0002-2526-2205 FU NASA [NNG11PA03C] FX This work is supported by the NASA CRaTER contract NNG11PA03C. We thank Alexander Boyd for assistance with data reduction. NR 35 TC 6 Z9 6 U1 1 U2 8 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-9097 EI 2169-9100 J9 J GEOPHYS RES-PLANET JI J. Geophys. Res.-Planets PD JUN 5 PY 2012 VL 117 AR E00H23 DI 10.1029/2011JE003921 PG 7 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 957IS UT WOS:000305155700001 ER PT J AU Perego, UA Lancioni, H Tribaldos, M Angerhofer, N Ekins, JE Olivieri, A Woodward, SR Pascale, JM Cooke, R Motta, J Achilli, A AF Perego, Ugo A. Lancioni, Hovirag Tribaldos, Maribel Angerhofer, Norman Ekins, Jayne E. Olivieri, Anna Woodward, Scott R. Pascale, Juan Miguel Cooke, Richard Motta, Jorge Achilli, Alessandro TI Decrypting the Mitochondrial Gene Pool of Modern Panamanians SO PLOS ONE LA English DT Article ID NATIVE-AMERICAN POPULATIONS; Y-CHROMOSOME; COSTA-RICA; LATE PLEISTOCENE; MTDNA VARIATION; NORTH-AMERICA; DNA; DIVERSITY; EVOLUTIONARY; HISTORY AB The Isthmus of Panama-the narrow neck of land connecting the northern and southern American landmasses-was an obligatory corridor for the Paleo-Indians as they moved into South America. Archaeological evidence suggests an unbroken link between modern natives and their Paleo-Indian ancestors in some areas of Panama, even if the surviving indigenous groups account for only 12.3% of the total population. To evaluate if modern Panamanians have retained a larger fraction of the native pre-Columbian gene pool in their maternally-inherited mitochondrial genome, DNA samples and historical records were collected from more than 1500 volunteer participants living in the nine provinces and four indigenous territories of the Republic. Due to recent gene-flow, we detected similar to 14% African mitochondrial lineages, confirming the demographic impact of the Atlantic slave trade and subsequent African immigration into Panama from Caribbean islands, and a small European (similar to 2%) component, indicating only a minor influence of colonialism on the maternal side. The majority (similar to 83%) of Panamanian mtDNAs clustered into native pan-American lineages, mostly represented by haplogroup A2 (51%). These findings reveal an overwhelming native maternal legacy in today's Panama, which is in contrast with the overall concept of personal identity shared by many Panamanians. Moreover, the A2 sub-clades A2ad and A2af (with the previously named 6 bp Huetar deletion), when analyzed at the maximum level of resolution (26 entire mitochondrial genomes), confirm the major role of the Pacific coastal path in the peopling of North, Central and South America, and testify to the antiquity of native mitochondrial genomes in Panama. C1 [Perego, Ugo A.; Angerhofer, Norman; Ekins, Jayne E.; Woodward, Scott R.] Sorenson Mol Geneal Fdn, Salt Lake City, UT USA. [Lancioni, Hovirag; Achilli, Alessandro] Univ Perugia, Dipartimento Biol Cellulare & Ambientale, I-06100 Perugia, Italy. [Tribaldos, Maribel; Pascale, Juan Miguel; Motta, Jorge] Inst Conmemorativo Gorgas Estudios Salud, Panama City, Panama. [Angerhofer, Norman; Woodward, Scott R.] Ancestry, Provo, UT USA. [Olivieri, Anna] Univ Pavia, Dipartimento Biol & Biotecnol, I-27100 Pavia, Italy. [Cooke, Richard] Smithsonian Trop Res Inst, Apdo, Ancon, Panama. RP Perego, UA (reprint author), Sorenson Mol Geneal Fdn, Salt Lake City, UT USA. EM alessandro.achilli@unipg.it RI Lancioni, Hovirag/F-9067-2014; OLIVIERI, ANNA/I-9235-2012; Achilli, Alessandro/I-9236-2012 OI Lancioni, Hovirag/0000-0001-5514-1853; OLIVIERI, ANNA/0000-0002-3941-8098; Achilli, Alessandro/0000-0001-6871-3451 FU Instituto Conmemorativo Gorgas de Estudios de la Salud; Gorgas Internal Grant for Genealogy Studies; Italian Ministry of the University: FIRB-Futuro in Ricerca; Progetti Ricerca Interesse Nazionale; Sorenson Molecular Genealogy Foundation FX This research received support from the Instituto Conmemorativo Gorgas de Estudios de la Salud (to JM), Gorgas Internal Grant for Genealogy Studies (to JMP), the Italian Ministry of the University: FIRB-Futuro in Ricerca 2008 (to AA and AO), Progetti Ricerca Interesse Nazionale 2009 (to AA), and the Sorenson Molecular Genealogy Foundation (to UAP, NA and SRW). The authors are grateful to all the donors for providing biological specimens, and to everyone at the Instituto Conmemorativo Gorgas and at the Sorenson Molecular Genealogy Foundation for their work on the preliminary data. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 57 TC 16 Z9 16 U1 0 U2 6 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA SN 1932-6203 J9 PLOS ONE JI PLoS One PD JUN 4 PY 2012 VL 7 IS 6 AR e38337 DI 10.1371/journal.pone.0038337 PG 10 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 959UU UT WOS:000305341700060 PM 22675545 ER PT J AU Clough, GW AF Clough, G. Wayne TI PANAMA EXPOSED SO SMITHSONIAN LA English DT Editorial Material C1 Smithsonian Inst, Washington, DC 20560 USA. RP Clough, GW (reprint author), Smithsonian Inst, Washington, DC 20560 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SMITHSONIAN ASSOC PI WASHINGTON PA 900 JEFFERSON DR, WASHINGTON, DC 20560 USA SN 0037-7333 J9 SMITHSONIAN JI Smithsonian PD JUN PY 2012 VL 43 IS 3 BP 8 EP 8 PG 1 WC Humanities, Multidisciplinary SC Arts & Humanities - Other Topics GA 126SS UT WOS:000317642100002 ER PT J AU Sonsthagen, SA Chesser, RT Bell, DA Dove, CJ AF Sonsthagen, Sarah A. Chesser, R. Terry Bell, Douglas A. Dove, Carla J. TI Hybridization among Arctic white-headed gulls (Larus spp.) obscures the genetic legacy of the Pleistocene SO ECOLOGY AND EVOLUTION LA English DT Article DE Genetic structure; hybridization; Larus; Pleistocene glacial refugia; white-headed gulls ID GLAUCESCENS-OCCIDENTALIS COMPLEX; MITOCHONDRIAL-DNA; NORTH-AMERICA; DIFFERENTIATION MEASURE; POPULATION PARAMETERS; LATE QUATERNARY; HYBRID ZONES; ICE AGES; PHYLOGEOGRAPHY; CONSEQUENCES AB We studied the influence of glacial oscillations on the genetic structure of seven species of white-headed gull that breed at high latitudes (Larus argentatus, L. canus, L. glaucescens, L. glaucoides, L. hyperboreus, L. schistisagus, and L. thayeri). We evaluated localities hypothesized as ice-free areas or glacial refugia in other Arctic vertebrates using molecular data from 11 microsatellite loci, mitochondrial DNA (mtDNA) control region, and six nuclear introns for 32 populations across the Holarctic. Moderate levels of genetic structure were observed for microsatellites (F-ST = 0.129), introns (Phi(ST) = 0.185), and mtDNA control region (Phi(ST) = 0.461), with among-group variation maximized when populations were grouped based on subspecific classification. Two haplotype and at least two allele groups were observed across all loci. However, no haplotype/allele group was composed solely of individuals of a single species, a pattern consistent with recent divergence. Furthermore, northernmost populations were not well differentiated and among-group variation was maximized when L. argentatus and L. hyberboreus populations were grouped by locality rather than species, indicating recent hybridization. Four populations are located in putative Pleistocene glacial refugia and had larger tau estimates than the other 28 populations. However, we were unable to substantiate these putative refugia using coalescent theory, as all populations had genetic signatures of stability based on mtDNA. The extent of haplotype and allele sharing among Arctic white-headed gull species is noteworthy. Studies of other Arctic taxa have generally revealed species-specific clusters as well as genetic structure within species, usually correlated with geography. Aspects of white-headed gull behavioral biology, such as colonization ability and propensity to hybridize, as well as their recent evolutionary history, have likely played a large role in the limited genetic structure observed. C1 [Sonsthagen, Sarah A.; Dove, Carla J.] Smithsonian Inst, Natl Museum Nat Hist, Div Birds, Dept Vertebrate Zool, Washington, DC 20013 USA. [Chesser, R. Terry] Smithsonian Inst, Natl Museum Nat Hist, USGS Patuxent Wildlife Res Ctr, Washington, DC 20560 USA. [Bell, Douglas A.] Calif Acad Sci, Dept Ornithol & Mammol, San Francisco, CA 94118 USA. RP Sonsthagen, SA (reprint author), US Geol Survey, Alaska Sci Ctr, Anchorage, AK 99508 USA. EM ssonsthagen@usgs.gov FU Federal Aviation Administration (FAA); Laboratories of Analytical Biology; Division of Birds, National Museum of Natural History, Smithsonian Institution FX Funding was provided by the Federal Aviation Administration (FAA) and the Laboratories of Analytical Biology and Division of Birds, National Museum of Natural History, Smithsonian Institution. We thank the following for their significant contributions of tissues for this work: N. Rice, Academy of Natural Sciences of Philadelphia; P. Sweet, American Museum of Natural History; R. Zink and M. Westberg, Bell Museum of Natural History; S. Birks, Burke Museum of Natural History and Culture; D. Boertmann, National Environmental Research Group, Denmark; D. Willard, Field Museum of Natural History; R. Brumfield and D. Dittmann, Louisiana State University Museum of Natural Science; K. Garrett, Natural History Museum of Los Angeles County; J. Dean, National Museum of Natural History; J. Hudon, Royal Alberta Museum; A. Baker and O. Haddrath, Royal Ontario Museum; K. Winker and D. Gibson, University of Alaska Museum; and R. Bowie and C. Cicero, University of California Berkeley Museum of Vertebrate Zoology. We would also like to thank the numerous individuals that helped facilitate field work for the various museums; J. Hunt, Smithsonian Institution, who provided technical laboratory support; C. Milensky and F. Dahlan, Smithsonian Institution, for assistance with sample collection and preparation; and A. Driskell, M. Heacker, and L. Weigt, Smithsonian Institution, K. Omland, University of Maryland Baltimore County, and R. Wilson, University of Alaska Fairbanks, for their guidance and advice throughout this project, as well as two anonymous reviewers comments on earlier drafts of this manuscript. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U. S. Government. NR 72 TC 8 Z9 8 U1 3 U2 21 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 2045-7758 J9 ECOL EVOL JI Ecol. Evol. PD JUN PY 2012 VL 2 IS 6 BP 1278 EP 1295 DI 10.1002/ece3.240 PG 18 WC Ecology; Evolutionary Biology SC Environmental Sciences & Ecology; Evolutionary Biology GA 055WF UT WOS:000312447900015 PM 22833800 ER PT J AU McKenzie, LA Johnston, EL Brooks, R AF McKenzie, Louise A. Johnston, Emma L. Brooks, Robert TI Using clones and copper to resolve the genetic architecture of metal tolerance in a marine invader SO ECOLOGY AND EVOLUTION LA English DT Article DE Bryozoan; contamination; factor analytical modeling; genetic correlation; genetic variance and covariance; modular organism; trade-off ID DIFFERENTIAL TOLERANCE; PHENOTYPIC PLASTICITY; BIOLOGICAL INVASIONS; RAPID EVOLUTION; BUGULA-NERITINA; HEAVY-METALS; POLLUTION; RESISTANCE; INVERTEBRATE; ENVIRONMENT AB The global spread of invasive species may be facilitated by adaptation to the practices that humans use to manage those species. For example, marine invertebrates that adapt to metal-based antifouling biocides on ship hulls may be more likely to be introduced to and establish in metal-polluted environments. We tested this idea by studying clonal variation in tolerance to, and ability to recover from, exposure to copper in a widespread invasive marine bryozoan, Watersipora subtorquata. We cloned colonies of this organism to independently test multiple environments in a genotype by environment design, and then created a genetic variance-covariance matrix. Genotypes were exposed to a gradient of copper concentrations and growth measured during exposure and after a recovery period. There was a significant genotype x environment interaction in growth during exposure and recovery. We found clonal variation in tolerance and ability to recover from exposure to copper, with growth during exposure apparently trading off against growth after exposure. A weak genetic correlation between growth during and after exposure further indicated that they are separate traits. Overall, the genetic variation within this population indicates that there is considerable potential for adaptation to copper, but this comes at a cost to growth in unpolluted environments. C1 [McKenzie, Louise A.; Johnston, Emma L.; Brooks, Robert] Univ New S Wales, Evolut & Ecol Res Ctr, Sydney, NSW 2052, Australia. RP McKenzie, LA (reprint author), Smithsonian Environm Res Ctr, Marine Invas Lab, POB 28, Edgewater, MD 21037 USA. EM mckenziel@si.edu RI Brooks, Robert/A-1251-2008; Johnston, Emma/B-7210-2009 OI Brooks, Robert/0000-0001-6926-0781; Johnston, Emma/0000-0002-2117-366X FU Australian Government; Australian Research Council FX Supported by the Australian Government and Australian Research Council through research fellowships, postgraduate awards, and grants. NR 62 TC 2 Z9 2 U1 1 U2 32 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 2045-7758 J9 ECOL EVOL JI Ecol. Evol. PD JUN PY 2012 VL 2 IS 6 BP 1319 EP 1329 DI 10.1002/ece3.241 PG 11 WC Ecology; Evolutionary Biology SC Environmental Sciences & Ecology; Evolutionary Biology GA 055WF UT WOS:000312447900019 PM 22833804 ER PT J AU King, RS Walker, CM Whigham, DF Baird, SJ Back, JA AF King, Ryan S. Walker, Coowe M. Whigham, Dennis F. Baird, Steven J. Back, Jeffrey A. TI Catchment topography and wetland geomorphology drive macroinvertebrate community structure and juvenile salmonid distributions in south-central Alaska headwater streams SO FRESHWATER SCIENCE LA English DT Article DE Salmonidae; topographic wetness; peatlands; land cover; wetland classification; landscape indicators ID COHO SALMON; ENVIRONMENTAL-CONDITIONS; LAND-COVER; FOOD WEBS; PATTERNS; SCALE; CONSERVATION; HABITAT; BIODIVERSITY; LANDSCAPE AB Conservation and management of headwater streams amid rapid global change require an understanding of the spatial and environmental factors that drive species distributions and associated ecosystem processes. We used a hierarchical analytical framework to model effects of catchment-scale topography and wetland geomorphic classes on stream physical habitat, chemistry, and macroinvertebrate and fish communities in 30 headwater streams across the Kenai Lowlands, southcentral Alaska, USA. We identified 135 macroinvertebrate taxa, 122 of which were aquatic insects, of which 79 were dipterans. We collected only 6 species of fish, but juvenile coho salmon and Dolly Varden were collected in 17 and 25 of the 30 streams and reached densities >500 and 1300/km, respectively. Flow-weighted slope, an indicator of water residence time and gradient, was the best catchment-scale correlate of macroinvertebrate and fish community structure, and its effect was mediated by wetland geomorphic classes and numerous water chemistry, substrate composition, and channel geomorphology variables measured at the reach scale. Many macroinvertebrate taxa showed high fidelity to different levels of the topographic gradient, resulting in high beta diversity but relatively similar levels of alpha diversity across the gradient. Juvenile salmonids were segregated among streams by both species and age classes. Coho salmon fry and parr (, 10 cm total length [TL]) had significant unimodal distributions that peaked in streams with intermediate slopes and gravel substrate, whereas presmolts (>= 10 cm) were found only in lowest-sloping streams with mostly peat substrate and deep, slow channels. Large Dolly Varden (>= 8 cm) were found across the entire gradient but were most abundant in high-sloping catchments, whereas small Dolly Varden (<8 cm) followed a similar distribution but were absent from the lowest-gradient sites with low flow velocity, dissolved O-2, and gravel substrate. Predictive modeling indicated that all of the 547 km of headwater streams in the study area might serve as potential habitat for >= 1 species and age class of salmonids. Our study should assist in development of catchment management tools for identifying and prioritizing conservation efforts in the region and may serve as a framework for other studies concerning biodiversity and focal species conservation in headwater streams. C1 [King, Ryan S.; Back, Jeffrey A.] Baylor Univ, Dept Biol, Ctr Reservoir & Aquat Syst Res, Waco, TX 76798 USA. [Walker, Coowe M.; Baird, Steven J.] Kachemak Bay Res Reserve, Homer, AK 99603 USA. [Whigham, Dennis F.] Smithsonian Environm Res Ctr, Edgewater, MD 21037 USA. RP King, RS (reprint author), Baylor Univ, Dept Biol, Ctr Reservoir & Aquat Syst Res, 1 Bear Pl 97388, Waco, TX 76798 USA. EM ryan_s_king@baylor.edu; coowe.walker@alaska.gov; whighamd@si.edu; steve.baird@alaska.gov; jeff_back@baylor.edu OI Whigham, Dennis/0000-0003-1488-820X FU US Environmental Protection Agency through the Wetland Protection Development Grant program [CD-96011801-0] FX This project was funded by a grant from US Environmental Protection Agency Region 10 through the Wetland Protection Development Grant program, contract # CD-96011801-0, and significant cost-sharing from Baylor University and the Kachemak Bay Research Reserve (KBRR). Staff of KBRR (Amy Alderfer, Kim Donohue, Conrad Field) and several volunteers (Jennifer Brewer, Shan Burson, Patrick Dougherty, Dwayne Evans, Rachel Hovel, Megan Murphy, Caitlin Schott, Simeon Smith, Scott Thompson) assisted with various parts of the project. We thank the Ninilchik Tribal Association and private landowners for providing access to sampling sites, Angela Doroff and Terry Thompson for providing office space and resources at KBRR to RSK that facilitated completion of this manuscript, and Becky Shaftel for providing helpful comments on an earlier version on this manuscript. We especially thank Phil North for his encouragement, support, and efforts to make the project a reality. Although this work was funded, in part, by the US Environmental Protection Agency, no official endorsement should be inferred. NR 76 TC 7 Z9 7 U1 5 U2 51 PU SOC FRESWATER SCIENCE PI WACO PA 5400 BOSQUE BLVD, STE 680, WACO, TX 76710 USA SN 2161-9565 J9 FRESHW SCI JI Freshw. Sci. PD JUN PY 2012 VL 31 IS 2 BP 341 EP 364 DI 10.1899/11-109.1 PG 24 WC Ecology; Marine & Freshwater Biology SC Environmental Sciences & Ecology; Marine & Freshwater Biology GA 021SD UT WOS:000309904800006 ER PT J AU Bellemain, E Gaggiotti, OE Fahey, A Bermingham, E Ricklefs, RE AF Bellemain, Eva Gaggiotti, Oscar E. Fahey, Anna Bermingham, Eldredge Ricklefs, Robert E. TI Demographic history and genetic diversity in West Indian Coereba flaveola populations SO GENETICA LA English DT Article DE Coereba flaveola; Demography; Genetic diversity; Migration; Caribbean; Nuclear sequences; Mitochondrial sequences ID DNA POLYMORPHISM; INFERENCE; NUCLEAR; BIOGEOGRAPHY; EXPRESSION; COALESCENT; LIKELIHOOD; BIRDS AB The bananaquit (Coereba flaveola) has been well studied throughout the Caribbean region from a phylogenetic perspective. However, data concerning the population genetics and long-term demography of this bird species are lacking. In this study, we focused on three populations within the Lesser Antilles and one on Puerto Rico and assessed genetic and demographic processes, using five nuclear and two mitochondrial markers. We found that genetic diversity of bananaquits on Puerto Rico exceeds that on the smaller islands (Dominica, Guadeloupe and Grenada); this might reflect either successive founder events from Puerto Rico to Grenada, or more rapid drift in smaller populations subsequent to colonization. Population growth rate estimates showed no evidence of rapid expansion and migration was indicated only between populations from the closest islands of Dominica and Guadeloupe. Overall, our results suggest that a "demographic fission" model, considering only mutation and drift, but without migration, can be applied to these bananaquit populations in the West Indies. C1 [Bellemain, Eva] Spygen, Savoie Technolac, F-73375 Le Bourget Du Lac, France. [Bellemain, Eva; Bermingham, Eldredge] Smithsonian Trop Res Inst, Balboa, Panama. [Gaggiotti, Oscar E.] Univ Grenoble 1, CNRS, UMR 5553, Lab Ecol Alpine, F-38041 Grenoble 9, France. [Fahey, Anna] Purdue Univ, Dept Forestry & Nat Resources, W Lafayette, IN 47907 USA. [Ricklefs, Robert E.] Univ Missouri, Dept Biol, St Louis, MO 63121 USA. RP Bellemain, E (reprint author), Spygen, Savoie Technolac, 12 Allee Lac Garde,Batiment House Boat 7,BP 274, F-73375 Le Bourget Du Lac, France. EM evabellemain@gmail.com RI Gaggiotti, Oscar/G-2459-2010 OI Gaggiotti, Oscar/0000-0003-1827-1493 FU Smithsonian Institution James Bond Restricted Endowment; National Geographic Society; National Science Foundation; Smithsonian Institution FX This work was conducted at the Smithsonian Tropical Research Institute, Panama and supported by the Smithsonian Institution James Bond Restricted Endowment. Research by E. Bermingham and RER on West Indian birds has been supported by the National Geographic Society, the National Science Foundation, and the Smithsonian Institution. We are grateful to L. Garcia, M. Gonzalez and C. Vergara for technical support in the laboratory. We also thank two anonymous reviewers for their valuable comments and their constructive suggestions to the manuscript. NR 32 TC 0 Z9 0 U1 1 U2 17 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0016-6707 J9 GENETICA JI Genetica PD JUN PY 2012 VL 140 IS 4-6 BP 137 EP 148 DI 10.1007/s10709-012-9665-6 PG 12 WC Genetics & Heredity SC Genetics & Heredity GA 008PF UT WOS:000308968300004 PM 22855326 ER PT J AU Loss, SR AF Loss, Scott R. TI Nesting Density of Hermit Thrushes in a Remnant Invasive Earthworm-free Portion of a Wisconsin Hardwood Forest SO WILSON JOURNAL OF ORNITHOLOGY LA English DT Article ID COMMUNITIES; PREDATION; SUCCESS AB I observed an exceptionally high density of Hermit Thrush (Catharus guttatus) nests (3.1 nests/ha) over two breeding seasons in an isolated 1.3-ha portion of an earthworm-free study site in the Chequamegon-Nicolet National Forest, Wisconsin. This density was much greater than the 0.1 to 0.6 nests/ha observed over the rest of the study area and exceeds by an order of magnitude most previously reported estimates for this species. The mean distance among Hermit Thrush nests in earthworm-free sites (215 m; 95% CI = 180-250 m) was lower than in invaded sites (250 m; 95% CI = 236-264 m); this difference was not statistically significant. Nest density did not differ significantly between categories. An abundance of suitable nest sites in a favored nesting substrate (clubmoss; Lycopodium spp.) could have contributed to the exceptionally high density of Hermit Thrush nests observed. High Hermit Thrush nest densities may occur in association with forest floor conditions that are characteristic of earthworm-free areas. Received 3 August 2011. Accepted 16 January 2012. C1 [Loss, Scott R.] Univ Minnesota, Conservat Biol Grad Program, St Paul, MN 55108 USA. RP Loss, SR (reprint author), Smithsonian Migratory Bird Ctr, Natl Zool Pk,POB 37012,MRC 5503, Washington, DC 20013 USA. EM LossS@si.edu RI Loss, Scott/B-1504-2014 FU American Museum of Natural History; Bell Museum of Natural History; Dayton-Wilkie Foundation; Explorer's Club; Minnesota Ornithologists' Union; Wisconsin Society for Ornithology; University of Minnesota; National Science Foundation IGERT [NSF DGE-0653827] FX Field research was funded by the American Museum of Natural History, Bell Museum of Natural History, Dayton-Wilkie Foundation, Explorer's Club, Minnesota Ornithologists' Union, and Wisconsin Society for Ornithology. SRL was supported by a University of Minnesota Graduate School Fellowship and a National Science Foundation IGERT grant: Risk Analysis for Introduced Species and Genotypes (NSF DGE-0653827). I thank C. C. Hakseth, L. E. Lambert, J. C. Mulligan, M. W. Sharrow, Tammy Johns, H. M. Streby, S. M. Peterson, B. M. Breen, C.-M. Hung, and S. S. Loss for field assistance. I also thank R. B. Blair, L. E. Frelich, D. E. Andersen, and P. V. Bolstad, for guidance. B. M. Breen, H. M. Streby, and K. S. G. Sundar for comments that improved the manuscript, and the Cable Natural History Museum for housing and office support. Fieldwork was conducted with appropriate permits and approval by the University of Minnesota Institutional Animal Care and Use Committee (protocol 0904A63062). NR 20 TC 3 Z9 3 U1 0 U2 5 PU WILSON ORNITHOLOGICAL SOC PI WACO PA 5400 BOSQUE BLVD, STE 680, WACO, TX 76710 USA SN 1559-4491 J9 WILSON J ORNITHOL JI Wilson J. Ornithol. PD JUN PY 2012 VL 124 IS 2 BP 375 EP 379 PG 5 WC Ornithology SC Zoology GA 005YO UT WOS:000308786200023 ER PT J AU Li, X Brinckerhoff, WB Managadze, GG Pugel, DE Corrigan, CM Doty, JH AF Li, X. Brinckerhoff, W. B. Managadze, G. G. Pugel, D. E. Corrigan, C. M. Doty, J. H. TI Laser ablation mass spectrometer (LAMS) as a standoff analyzer in space missions for airless bodies SO INTERNATIONAL JOURNAL OF MASS SPECTROMETRY LA English DT Article DE Laser ablation mass spectrometer (LAMS); Time-of-flight; Standoff analyzer ID ION AB A laser ablation mass spectrometer (LAMS) based on a time-of-flight (TOF) analyzer with adjustable drift length is proposed as a standoff elemental composition sensor for space missions to airless bodies. It is found that the use of a retarding potential analyzer in combination with a two-stage reflectron enables LAMS to be operated at variable drift length. For field-free drift lengths between 33 cm and 100 cm, at least unit mass resolution can be maintained solely by adjustment of internal voltages, and without resorting to drastic reductions in sensitivity. Therefore. LAMS should be able to be mounted on a platform or robotic arm and analyze samples at standoff distances of up to several tens of cm, permitting high operational flexibility and wide area coverage of heterogeneous regolith on airless bodies. (C) 2012 Elsevier B.V. All rights reserved. C1 [Li, X.] Univ Maryland Baltimore Cty, Ctr Res & Explorat Space Sci & Technol, Baltimore, MD 21250 USA. [Brinckerhoff, W. B.; Pugel, D. E.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Managadze, G. G.] Space Res Inst IKI, Moscow, Russia. [Corrigan, C. M.] Natl Museum Nat Hist, Smithsonian Inst, Washington, DC 20560 USA. [Doty, J. H.] Rice Univ, Houston, TX USA. RP Li, X (reprint author), Univ Maryland Baltimore Cty, Ctr Res & Explorat Space Sci & Technol, 1000 Hilltop Circle, Baltimore, MD 21250 USA. EM xiang.li@nasa.gov RI Li, Xiang/F-4539-2012; Brinckerhoff, William/F-3453-2012 OI Brinckerhoff, William/0000-0001-5121-2634 FU NASA Planetary Instrument Definition and Development (PIDDP) program; Goddard Internal Research and Development program FX This work was supported by the NASA Planetary Instrument Definition and Development (PIDDP) program and by the Goddard Internal Research and Development program. NR 17 TC 4 Z9 4 U1 0 U2 15 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1387-3806 J9 INT J MASS SPECTROM JI Int. J. Mass Spectrom. PD JUN 1 PY 2012 VL 323 BP 63 EP 67 DI 10.1016/j.ijms.2012.06.020 PG 5 WC Physics, Atomic, Molecular & Chemical; Spectroscopy SC Physics; Spectroscopy GA 005RU UT WOS:000308768400011 ER PT J AU Nicholson, C AF Nicholson, Catherine TI FINDING the STONES SO PROLOGUE-QUARTERLY OF THE NATIONAL ARCHIVES AND RECORDS ADMINISTRATION LA English DT Article C1 [Nicholson, Catherine] NARA Conservat Labs, Nara, Japan. [Nicholson, Catherine] Smithsonian Inst, Natl Gallery Art, Boston Publ Lib, Washington, DC 20560 USA. RP Nicholson, C (reprint author), NARA Conservat Labs, Nara, Japan. NR 0 TC 0 Z9 0 U1 0 U2 0 PU NATL ARCHIVES RECORDS ADMINISTRATION PI WASHINGTON PA TRUST FUND BOARD, WASHINGTON, DC 20408 USA SN 0033-1031 J9 PROLOGUE JI Prologue PD SUM PY 2012 VL 44 IS 2 BP 22 EP 29 PG 8 WC History SC History GA 990AU UT WOS:000307604200004 ER PT J AU Aitken-Palmer, C Hou, R Burrell, C Zhang, ZH Wang, CD Spindler, R Wildt, DE Ottinger, MA Howard, J AF Aitken-Palmer, Copper Hou, Rong Burrell, Caitlin Zhang, Zhihe Wang, Chengdong Spindler, Rebecca Wildt, David E. Ottinger, Mary Ann Howard, JoGayle TI Protracted Reproductive Seasonality in the Male Giant Panda (Ailuropoda melanoleuca) Reflected by Patterns in Androgen Profiles, Ejaculate Characteristics, and Selected Behaviors SO BIOLOGY OF REPRODUCTION LA English DT Article DE Ailuropoda melanoleuca; giant panda; male sexual function; seasonal reproduction; seasonality; sperm; steroid hormones; testis ID URSUS-THIBETANUS-JAPONICUS; JAPANESE BLACK BEAR; CHEMICAL COMMUNICATION; STEROIDOGENIC ENZYMES; IMMUNOLOCALIZATION; SPERMATOGENESIS; TESTOSTERONE; AMERICANUS; MARITIMUS; HABITAT AB The female giant panda (Ailuropoda melanoleuca) experiences a brief (24-72 h) seasonal estrus, occurring once annually in spring (February-May). Our aim was to determine the existence and temporal profile of reproductive seasonality in the male of this species. The study was facilitated by 3 yr of access to eight giant panda males living in a large breeding center in China. Seasonal periods for the male were defined on the basis of female reproductive activity as prebreeding, breeding (early, peak, late), and nonbreeding seasons. Testes size, fecal androgen excretion, ejaculated sperm density, and frequency of reproductive behaviors (i.e., locomotion, scent marking, vocalizations) increased (P < 0.05) from the prebreeding period (October 1-January 31) to the early breeding season (February 1-March 21). Testes volume and sperm concentration were maximal from March 22 through April 15, a period coinciding with maximal female breeding activity. The occurrence of male reproductive behaviors and fecal androgen concentrations began declining during peak breeding and continued from April 16 through May 31 (late breeding period), returning to nadir throughout the nonbreeding interval (June 1-September 30). Reproductive quiescence throughout the latter period was associated with basal testes size/volume and aspermic ejaculates. Our results reveal that testes morphometry, fecal androgen excretion, seminal quality, and certain behaviors integrated together clearly demonstrate reproductive seasonality in the male giant panda. The coordinated increases in testes size, androgen production, sperm density, and sexual behaviors occur over a protracted interval, likely to prepare for and then accommodate a brief, unpredictable female estrus. C1 [Aitken-Palmer, Copper] Natl Zool Pk, Dept Conservat Med, Smithsonian Conservat Biol Inst, Ctr Species Survival, Front Royal, VA 22630 USA. [Hou, Rong; Zhang, Zhihe; Wang, Chengdong] Chengdu Res Base Giant Panda Breeding, Chengdu, Peoples R China. [Spindler, Rebecca] Toronto Zoo, Toronto, ON, Canada. [Ottinger, Mary Ann] Univ Maryland, Dept Anim & Avian Sci, College Pk, MD 20742 USA. RP Aitken-Palmer, C (reprint author), Natl Zool Pk, Dept Conservat Med, Smithsonian Conservat Biol Inst, Ctr Species Survival, 1500 Remount Rd, Front Royal, VA 22630 USA. EM aitkenc@si.edu FU Morris Animal Foundation; Friends of the National Zoo; University of Maryland Department of Animal and Avian Sciences; Chengdu Research Base of Giant Panda Breeding FX Supported by the Morris Animal Foundation, Friends of the National Zoo, University of Maryland Department of Animal and Avian Sciences, and the Chengdu Research Base of Giant Panda Breeding. International travel was supported by United Airlines. Research was conducted in partial fulfillment of Ph.D. requirements for C.A.P. at the University of Maryland. NR 38 TC 3 Z9 3 U1 2 U2 39 PU SOC STUDY REPRODUCTION PI MADISON PA 1691 MONROE ST,SUITE # 3, MADISON, WI 53711-2021 USA SN 0006-3363 J9 BIOL REPROD JI Biol. Reprod. PD JUN PY 2012 VL 86 IS 6 AR 195 DI 10.1095/biolreprod.112.099044 PG 10 WC Reproductive Biology SC Reproductive Biology GA 975YP UT WOS:000306548000026 PM 22492970 ER PT J AU Berube, MD Dunbar, SG Rutzler, K Hayes, WK AF Berube, Melissa D. Dunbar, Stephen G. Ruetzler, Klaus Hayes, William K. TI Home Range and Foraging Ecology of Juvenile Hawksbill Sea Turtles (Eretmochelys imbricata) on Inshore Reefs of Honduras SO CHELONIAN CONSERVATION AND BIOLOGY LA English DT Article DE fixed kernel density; hawksbill; minimum convex polygon; radio telemetry; sponges ID KEMPS RIDLEY TURTLES; GULF-OF-CALIFORNIA; CHELONIA-MYDAS; GREEN TURTLES; HABITAT USE; CARETTA-CARETTA; COASTAL WATERS; MARINE TURTLES; COSTA-RICA; CORAL-REEF AB Despite the recognition of the historical importance of hawksbills in the Caribbean region of Honduras, prior sea turtle research in the area has been extremely limited, and little is known about hawksbill turtle (Eretmochelys imbricata) ecology from this region. We tracked 6 juvenile hawksbills (28.7-35.6 cm, straight carapace length ISM) with radiotelemetry off the coast of Roatan in the Bay Islands of Honduras, conducted habitat assessments at 14 sites, and examined the diet of 5 juvenile hawksbills (19.8-49.7 cm, SCL) using gastric (n = 4) and fecal (n = 1) samples. Home ranges of all 6 turtles were small, with 100% minimum convex polygons from 0.15 to 0.55 km(2), and a 50% fixed kernel density for all animals pooled of 5.46 km(2). The habitat assessment showed that common prey items in hawksbill diets were abundant in areas where juvenile hawksbills were resident and in nonresident areas, with sponges (Chondrilla sp., Geodia sp.).) and octocorals (Pseudopterogorgia sp.) being most prevalent. We found sponge to be the primary component in the diet, comprising 59% of total ingesta. The most prevalent sponge species an the diet samples were Melophlus ruber and Chondrilla caribensis. Although C. caribensis is a common constituent of hawksbill diets, the current study provides the first report of M. ruber as a component of hawksbill diets. Home ranges of juvenile hawksbills in the Port Royal region of Roatan are small (< 1 km(2)), and their primary dietary component is the sponge M. ruber. Conservation efforts on Roatan should be established in the Port Royal region, and should include protection of dietary items and turtles. C1 [Berube, Melissa D.; Dunbar, Stephen G.; Hayes, William K.] Loma Linda Univ, Dept Earth & Biol Sci, Loma Linda, CA 92350 USA. [Dunbar, Stephen G.] Outreach & Res Inc, Protect Turtle Ecol Ctr Training, Colton, CA 92324 USA. [Berube, Melissa D.; Dunbar, Stephen G.] Turtle Awareness & Protect Studies, Roatan, Honduras. [Ruetzler, Klaus] Smithsonian Inst, Dept Invertebrate Zool, Washington, DC 20560 USA. RP Berube, MD (reprint author), Loma Linda Univ, Dept Earth & Biol Sci, Griggs Hall, Loma Linda, CA 92350 USA. EM mberube@llu.edu; sdunbar@llu.edu; ruetzler@si.edu; whayes@llu.edu RI Hayes, William/L-1284-2013 OI Hayes, William/0000-0002-0903-0519 FU Protective Turtle Ecology Center for Training, Outreach and Research, Inc.; Reef House Resort; Department of Earth and Biological Sciences at Loma Linda University; State of the World's Sea Turtles FX Logistical and financial support were provided by the Protective Turtle Ecology Center for Training, Outreach and Research, Inc; the owners of the Reef House Resort; the Department of Earth and Biological Sciences at Loma Linda University; and the State of the World's Sea Turtles. We thank the Honduras Natural Resources and Environment Secretariat, and Direccion General de Pesca y Acuicultura for providing research permits for this work. Thanks to Dr Rob van Soest for providing information about Melophlus ruber. We also thank Dr Art Rodgers and Dr Jeff Seminal for their input on home range analysis, Dr Anne Meylan for her insights into gastric lavages and hawksbill diets, and Aaron Corbit for his help with compositional analysis. This work was carried out under permit DGPA/5428/2007 from the Secretariat of Agriculture and Ranching, and is in compliance with Loma Linda University IACUC protocol 86004. This is contribution number 2 of the Protective Turtle Ecology Center for Training, Outreach and Research, Inc. NR 74 TC 4 Z9 4 U1 6 U2 62 PU CHELONIAN RESEARCH FOUNDATION PI LUNENBURG PA 168 GOODRICH ST., LUNENBURG, MA USA SN 1071-8443 EI 1943-3956 J9 CHELONIAN CONSERV BI JI Chelonian Conserv. Biol. PD JUN PY 2012 VL 11 IS 1 BP 33 EP 43 PG 11 WC Zoology SC Zoology GA 975HF UT WOS:000306500600004 ER PT J AU Machlis, G Frankovich, TA Alcolado, PM Garcia-Machado, E Hernandez-Zanuy, AC Hueter, RE Knowlton, N Perera, E Tunnell, JW AF Machlis, Gary Frankovich, Thomas A. Alcolado, Pedro M. Garcia-Machado, Erik Caridad Hernandez-Zanuy, Aida Hueter, Robert E. Knowlton, Nancy Perera, Erick Tunnell, John W., Jr. TI OCEAN POLICY US-Cuba Scientific Collaboration Emerging Issues and Opportunities in Marine and Related Environmental Sciences SO OCEANOGRAPHY LA English DT Editorial Material ID FISH C1 [Machlis, Gary] Univ Idaho, Dept Forest Resources, Moscow, ID 83843 USA. [Frankovich, Thomas A.] Florida Int Univ, SE Environm Res Ctr, Miami, FL 33199 USA. [Alcolado, Pedro M.; Caridad Hernandez-Zanuy, Aida] CYTED Iberoamer Network BIODIVMAR, Inst Oceanol, Havana, Cuba. [Garcia-Machado, Erik; Perera, Erick] Univ Havana, Ctr Marine Res, Miramar, Cuba. [Hueter, Robert E.] Mote Marine Lab, Directorate Marine Biol & Conservat, Sarasota, FL 34236 USA. [Knowlton, Nancy] Smithsonian Inst, Natl Museum Nat Hist, Washington, DC 20560 USA. [Tunnell, John W., Jr.] Harte Res Inst Gulf Mexico Studies, Corpus Christi, TX USA. [Tunnell, John W., Jr.] Texas A&M Univ Corpus Christi, Corpus Christi, TX USA. RP Machlis, G (reprint author), Univ Idaho, Dept Forest Resources, Moscow, ID 83843 USA. EM gmachlis@uidaho.edu RI Perera, Erick/F-2917-2012 OI Perera, Erick/0000-0001-6108-1340 NR 18 TC 0 Z9 0 U1 1 U2 10 PU OCEANOGRAPHY SOC PI ROCKVILLE PA P.O. BOX 1931, ROCKVILLE, MD USA SN 1042-8275 J9 OCEANOGRAPHY JI Oceanography PD JUN PY 2012 VL 25 IS 2 BP 227 EP 231 PG 5 WC Oceanography SC Oceanography GA 970WD UT WOS:000306162100029 ER PT J AU King, DI Chandler, CC Rappole, JH Chandler, RB Mehlman, DW AF King, David I. Chandler, Carlin C. Rappole, John H. Chandler, Richard B. Mehlman, David W. TI Establishing quantitative habitat targets for a 'Critically Endangered' Neotropical migrant (Golden-cheeked Warbler Dendroica chrysoparia) during the non-breeding season SO BIRD CONSERVATION INTERNATIONAL LA English DT Article ID HIERARCHICAL-MODELS; CONSERVATION; ABUNDANCE; ECOLOGY AB The Golden-checked Warbler Dendroica chrysoparia is a federally endangered Neotropical migrant that inhabits montane pine-oak forests in Mexico and northern Central America during the non-breeding season. Although it is known that Golden-checked Warblers are closely associated with 'encino' oaks (evergreen or holm oak) such as Quercus sapotifolia, Q. eliptica and Q. elongata, which have shiny, narrow, elliptical, or oblong leaves, quantitative habitat targets are useful for effectively incorporating this information into conservation planning and forest management practices. We analysed data on wintering Golden-checked Warblers collected during the non-breeding season in Honduras from 1996 to 1998 to identify quantitative targets for habitat conditions for this species. Data on warbler abundance were collected using line transect surveys located in montane pine-oak forests in a stratified-random fashion. Habitat data were collected at five 0.04 ha plots on these same transects and the averaged values used as predictors of Golden-checked Warbler abundance. We found that Golden-checked Warblers were strongly associated with the basal area of encino oaks and density of 'roble' oaks, such as Q. segoviensis, Q. purulhana and Q. rugosa, which have large, lobed leaves. Density of Golden-checked Warblers peaked at approximate to 5.6 m(-2) ha(-1) basal area of encino and approximate to 7 roble oaks ha(-1). These values can be used to identify quantitative habitat targets that can be directly incorporated into forest management practices to ensure that these activities maintain habitat conditions necessary for their use by Golden-checked Warblers. C1 [King, David I.] Univ Massachusetts, No Res Stn, USDA, US Forest Serv, Amherst, MA 01003 USA. [Chandler, Carlin C.; Chandler, Richard B.] Univ Massachusetts, Dept Nat Resources Conservat, Amherst, MA 01003 USA. [Rappole, John H.] Conservat Res Ctr, Smithsonian Inst, Front Royal, VA 22630 USA. [Mehlman, David W.] Nature Conservancy, Migratory Bird Program, Albuquerque, NM 87104 USA. RP King, DI (reprint author), Univ Massachusetts, No Res Stn, USDA, US Forest Serv, 160 Holdsworth Way,202 Holdsworth Hall, Amherst, MA 01003 USA. EM dking@fs.fed.us RI Chandler, Richard/D-8831-2014; Chandler, Richard/F-9702-2016 FU USDA Forest Service International Program; The Nature Conservancy Migratory Bird Program FX We thank the USDA Forest Service International Program who funded this work through a cooperative agreement with The Nature Conservancy Migratory Bird Program. We also thank Edgard Herrera for his valuable advice and support, Martha Moreno, Marvin Martinez, and Julio Merida for their help with fieldwork 2006-2008, and Scott Schlossberg and Mitch Hartley for his comments on an earlier draft of this manuscript. NR 20 TC 0 Z9 0 U1 1 U2 29 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA SN 0959-2709 J9 BIRD CONSERV INT JI Bird Conserv. Int. PD JUN PY 2012 VL 22 IS 2 BP 213 EP 221 DI 10.1017/S095927091100027X PG 9 WC Ornithology SC Zoology GA 971MP UT WOS:000306208300010 ER PT J AU Beck, AW Welten, KC McSween, HY Viviano, CE Caffee, MW AF Beck, Andrew W. Welten, Kees C. McSween, Harry Y., Jr. Viviano, Christina E. Caffee, Marc W. TI Petrologic and textural diversity among the PCA 02 howardite group, one of the largest pieces of the Vestan surface SO METEORITICS & PLANETARY SCIENCE LA English DT Article ID ASTEROID 4 VESTA; HED PARENT BODY; AMS STANDARDS; DIOGENITES; CONSTRAINTS; METEORITES; ORIGIN; GEOCHEMISTRY; METAMORPHISM; EVOLUTION AB Nine howardites and two diogenites were recovered from the Pecora Escarpment Icefield (PCA) in 2002. Cosmogenic radionuclide abundances indicate that the samples are paired and that they constituted an approximately 1 m (diameter) meteoroid prior to atmospheric entry. At about 1 m in diameter, the PCA 02 HED group represents one of the largest single pre-atmospheric pieces of the Vestan surface yet described. Mineral and textural variations were measured in six of the PCA 02 howardites to investigate meter-scale diversity of the Vestan surface. Mineral compositions span the range of known eucrite and diogenite compositions. Additional non-diogenitic groups of Mg- and Fe-rich olivine are observed, and are interpreted to have been formed by exogenic contamination and impact melting, respectively. These howardites contain olivine-rich impact melts that likely formed from dunite- and harzburgite-rich target rocks. Containing the first recognized olivine-rich HED impact melts, these samples provide meteoritic evidence that olivine-rich lithologies have been exposed on the surface of Vesta. Finally, we present a new method for mapping distributions of lithologies in howardites using 8 elemental X-ray maps. Proportions of diogenite and eucrite vary considerably among the PCA 02 howardites, suggesting they originated from a heterogeneous portion of the Vestan surface. While whole sample modes are dominated by diogenite, the finer grain size fractions are consistently more eucritic. This discrepancy has implications for near-infrared spectral observations of portions of Vestas surface that are similar to the PCA 02 howardites, as the finer grained eucritic material will disproportionately dominate the spectra. C1 [Beck, Andrew W.] Natl Museum Nat Hist, Smithsonian Inst, Washington, DC 20560 USA. [Welten, Kees C.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA. [Viviano, Christina E.] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA. [McSween, Harry Y., Jr.] Univ Tennessee, Dept Earth & Planetary Sci, Knoxville, TN 37996 USA. [McSween, Harry Y., Jr.] Univ Tennessee, Planetary Geosci Inst, Knoxville, TN 37996 USA. [Caffee, Marc W.] Purdue Univ, PRIME Lab, W Lafayette, IN 47907 USA. RP Beck, AW (reprint author), Natl Museum Nat Hist, Smithsonian Inst, 10th & Constitut NW, Washington, DC 20560 USA. EM becka@si.edu RI Viviano-Beck, Christina/F-3942-2015; Beck, Andrew/J-7215-2015; Caffee, Marc/K-7025-2015 OI Viviano-Beck, Christina/0000-0003-1601-2105; Beck, Andrew/0000-0003-4455-2299; Caffee, Marc/0000-0002-6846-8967 FU NASA Cosmochemistry [NNG06GG36G]; UCLA Dawn Team FX The authors thank the MWG and ANSMET for the collection and allocation of meteorite samples. This work was partially supported by NASA Cosmochemistry Grant NNG06GG36G and UCLA Dawn Team subcontract to HYM. We thank D. Mittlefehldt and A. Patzer for their constructive comments. We also thank MAPS AE A. Ruzicka and referees J.-A. Barrat and P. Buchanan for their helpful reviews and editorial handling. NR 59 TC 34 Z9 34 U1 1 U2 7 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1086-9379 J9 METEORIT PLANET SCI JI Meteorit. Planet. Sci. PD JUN PY 2012 VL 47 IS 6 BP 947 EP 969 DI 10.1111/j.1945-5100.2012.01360.x PG 23 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 971BR UT WOS:000306177400001 ER PT J AU Olson, SL AF Olson, Storrs L. TI Notes on the appendicular myology of the Scarlet Finch Haematospiza sipahi (Fringillidae: Carduelinae) SO ORNITHOLOGICAL SCIENCE LA English DT Article DE Carduelinae; Drepanidini; Fringillidae; Hematospiza sipahi; Myology; Scarlet Finch ID HAWAIIAN HONEYCREEPERS DREPANIDIDAE; APPENDAGE MYOLOGY AB The appendicular myology of the Scarlet Finch Haematospiza sipahi was found to be primitive in all of the characters known to show variation within the subfamily Carduelinae (Fringillidae). It is the only species of cardueline known so far to exhibit this combination of myological characters, although taxon sampling is still inadequate. Haematospiza provides a reasonable model for the last common ancestor of the Hawaiian radiation of carduelines of the tribe Drepanidini. C1 Natl Museum Nat Hist, Dept Vertebrate Zool, Div Birds, Smithsonian Inst, Washington, DC 20013 USA. RP Olson, SL (reprint author), Natl Museum Nat Hist, Dept Vertebrate Zool, Div Birds, Smithsonian Inst, POB 30712,NHB MRC 116, Washington, DC 20013 USA. EM olsons@si.edu NR 8 TC 0 Z9 0 U1 1 U2 2 PU ORNITHOLOGICAL SOC JAPAN, UNIV TOKYO, SCH AGR PI TOKYO PA YAYOI 1-1-1, TOKYO, 113-8657, JAPAN SN 1347-0558 J9 ORNITHOL SCI JI Ornithol. Sci. PD JUN PY 2012 VL 11 IS 1 BP 57 EP 58 PG 2 WC Ornithology SC Zoology GA 970QH UT WOS:000306146900007 ER PT J AU Bethermin, M Le Floc'h, E Ilbert, O Conley, A Lagache, G Amblard, A Arumugam, V Aussel, H Berta, S Bock, J Boselli, A Buat, V Casey, CM Castro-Rodriguez, N Cava, A Clements, DL Cooray, A Dowell, CD Eales, S Farrah, D Franceschini, A Glenn, J Griffin, M Hatziminaoglou, E Heinis, S Ibar, E Ivison, RJ Kartaltepe, JS Levenson, L Magdis, G Marchetti, L Marsden, G Nguyen, HT O'Halloran, B Oliver, SJ Omont, A Page, MJ Panuzzo, P Papageorgiou, A Pearson, CP Perez-Fournon, I Pohlen, M Rigopoulou, D Roseboom, IG Rowan-Robinson, M Salvato, M Schulz, B Scott, D Seymour, N Shupe, DL Smith, AJ Symeonidis, M Trichas, M Tugwell, KE Vaccari, M Valtchanov, I Vieira, JD Viero, M Wang, L Xu, CK Zemcov, M AF Bethermin, M. Le Floc'h, E. Ilbert, O. Conley, A. Lagache, G. Amblard, A. Arumugam, V. Aussel, H. Berta, S. Bock, J. Boselli, A. Buat, V. Casey, C. M. Castro-Rodriguez, N. Cava, A. Clements, D. L. Cooray, A. Dowell, C. D. Eales, S. Farrah, D. Franceschini, A. Glenn, J. Griffin, M. Hatziminaoglou, E. Heinis, S. Ibar, E. Ivison, R. J. Kartaltepe, J. S. Levenson, L. Magdis, G. Marchetti, L. Marsden, G. Nguyen, H. T. O'Halloran, B. Oliver, S. J. Omont, A. Page, M. J. Panuzzo, P. Papageorgiou, A. Pearson, C. P. Perez-Fournon, I. Pohlen, M. Rigopoulou, D. Roseboom, I. G. Rowan-Robinson, M. Salvato, M. Schulz, B. Scott, D. Seymour, N. Shupe, D. L. Smith, A. J. Symeonidis, M. Trichas, M. Tugwell, K. E. Vaccari, M. Valtchanov, I. Vieira, J. D. Viero, M. Wang, L. Xu, C. K. Zemcov, M. TI HerMES: deep number counts at 250 mu m, 350 mu m and 500 mu m in the COSMOS and GOODS-N fields and the build-up of the cosmic infrared background SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE cosmology: observations; diffuse radiation; galaxies: statistics; galaxies: photometry; submillimeter: galaxies; submillimeter: diffuse background ID HERSCHEL-SPIRE INSTRUMENT; LESS-THAN 2; STAR-FORMATION; LUMINOSITY FUNCTION; DUSTY GALAXIES; SCUBA GALAXIES; SUBMILLIMETER; EVOLUTION; SPITZER; BLAST AB Aims. The Spectral and Photometric Imaging REceiver (SPIRE) onboard the Herschel space telescope has provided confusion limited maps of deep fields at 250 mu m, 350 mu m, and 500 mu m, as part of the Herschel Multi-tiered Extragalactic Survey (HerMES). Unfortunately, due to confusion, only a small fraction of the cosmic infrared background (CIB) can be resolved into individually-detected sources. Our goal is to produce deep galaxy number counts and redshift distributions below the confusion limit at SPIRE wavelengths (similar to 20 mJy), which we then use to place strong constraints on the origins of the cosmic infrared background and on models of galaxy evolution. Methods. We individually extracted the bright SPIRE sources (>20 mJy) in the COSMOS field with a method using the positions, the flux densities, and the redshifts of the 24 mu m sources as a prior, and derived the number counts and redshift distributions of the bright SPIRE sources. For fainter SPIRE sources (<20 mJy), we reconstructed the number counts and the redshift distribution below the confusion limit using the deep 24 mu m catalogs associated with photometric redshift and information provided by the stacking of these sources into the deep SPIRE maps of the GOODS-N and COSMOS fields. Finally, by integrating all these counts, we studied the contribution of the galaxies to the CIB as a function of their flux density and redshift. Results. Through stacking, we managed to reconstruct the source counts per redshift slice down to similar to 2 mJy in the three SPIRE bands, which lies about a factor 10 below the 5s confusion limit. Our measurements place tight constraints on source population models. None of the pre-existing models are able to reproduce our results at better than 3-sigma. Finally, we extrapolate our counts to zero flux density in order to derive an estimate of the total contribution of galaxies to the CIB, finding 10.1 (+2.6)(2.3) nW m(-2) sr(-1), 6.5 (+1.7)(1.6) nW m(-2) sr(-1), and 2.8 (+0.9)(0.8) nW m(-2) sr(-1) at 250 mu m, 350 mu m, and 500 mu m, respectively. These values agree well with FIRAS absolute measurements, suggesting our number counts and their extrapolation are sufficient to explain the CIB. We find that half of the CIB is emitted at z = 1.04, 1.20, and 1.25, respectively. Finally, combining our results with other works, we estimate the energy budget contained in the CIB between 8 mu m and 1000 mu m: 26(-3)(+7) nW m(-2) sr(-1). C1 [Bethermin, M.; Le Floc'h, E.; Aussel, H.; Magdis, G.; Panuzzo, P.] Univ Paris Diderot, CE Saclay, Lab AIM Paris Saclay, CEA DSM Irfu,CNRS, F-91191 Gif Sur Yvette, France. [Bethermin, M.; Lagache, G.] Univ Paris 11, IAS, F-91405 Orsay, France. [Bethermin, M.; Lagache, G.] CNRS, UMR 8617, F-91405 Orsay, France. [Ilbert, O.; Boselli, A.; Buat, V.; Heinis, S.] Univ Aix Marseille, Lab Astrophys Marseille, OAMP, CNRS, F-13388 Marseille 13, France. [Conley, A.; Glenn, J.] Univ Colorado, Ctr Astrophys & Space Astron UCB 389, Boulder, CO 80309 USA. [Amblard, A.] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA. [Arumugam, V.; Ivison, R. J.; Roseboom, I. G.] Univ Edinburgh, Inst Astron, Royal Observ, Edinburgh EH9 3HJ, Midlothian, Scotland. [Berta, S.] Max Planck Inst Extraterr Phys MPE, D-85741 Garching, Germany. [Bock, J.; Cooray, A.; Dowell, C. D.; Levenson, L.; Nguyen, H. T.; Schulz, B.; Shupe, D. L.; Vieira, J. D.; Viero, M.; Xu, C. K.; Zemcov, M.] CALTECH, Pasadena, CA 91125 USA. [Bock, J.; Dowell, C. D.; Levenson, L.; Nguyen, H. T.; Zemcov, M.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Casey, C. M.] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA. [Castro-Rodriguez, N.; Perez-Fournon, I.] IAC, Tenerife 38200, Spain. [Castro-Rodriguez, N.; Perez-Fournon, I.] Univ La Laguna, Dept Astrofis, Tenerife 38205, Spain. [Cava, A.] Univ Complutense Madrid, Fac CC, Dept Astrofis, E-28040 Madrid, Spain. [Clements, D. L.; O'Halloran, B.; Rowan-Robinson, M.] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Astrophys Grp, London SW7 2AZ, England. [Cooray, A.] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. [Eales, S.; Griffin, M.; Papageorgiou, A.; Pohlen, M.] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales. [Farrah, D.; Oliver, S. J.; Roseboom, I. G.; Smith, A. J.; Wang, L.] Univ Sussex, Ctr Astron, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England. [Franceschini, A.; Marchetti, L.; Vaccari, M.] Univ Padua, Dipartimento Astron, I-35122 Padua, Italy. [Glenn, J.] Univ Colorado, CASA UCB 389, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA. [Hatziminaoglou, E.] ESO, D-85748 Garching, Germany. [Ibar, E.; Ivison, R. J.] Royal Observ, UK Astron Technol Ctr, Edinburgh EH9 3HJ, Midlothian, Scotland. [Kartaltepe, J. S.] Natl Opt Astron Observ, Tucson, AZ 85719 USA. [Marsden, G.; Scott, D.] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada. [Omont, A.] UPMC Univ Paris 6, CNRS, Inst Astrophys Paris, UMR 7095, F-75014 Paris, France. [Page, M. J.; Seymour, N.; Symeonidis, M.; Tugwell, K. E.] Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England. [Pearson, C. P.; Rigopoulou, D.] Rutherford Appleton Lab, RAL Space, Didcot OX11 0QX, Oxon, England. [Pearson, C. P.] Univ Lethbridge, Inst Space Imaging Sci, Lethbridge, AB T1K 3M4, Canada. [Rigopoulou, D.] Univ Oxford, Dept Astrophys, Oxford OX1 3RH, England. [Salvato, M.] Max Planck Inst Plasma Phys, D-85748 Garching, Germany. [Salvato, M.] Excellence Cluster, D-85748 Garching, Germany. [Schulz, B.; Shupe, D. L.; Xu, C. K.] CALTECH, Ctr Infrared Proc & Anal, JPL, Pasadena, CA 91125 USA. [Seymour, N.] CSIRO Astron & Space Sci, Epping, NSW 1710, Australia. [Trichas, M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Valtchanov, I.] European Space Astron Ctr, Herschel Sci Ctr, Madrid 28691, Spain. [Vaccari, M.] Univ Western Cape, Dept Phys, Astrophys Grp, ZA-7535 Cape Town, South Africa. RP Bethermin, M (reprint author), Univ Paris Diderot, CE Saclay, Lab AIM Paris Saclay, CEA DSM Irfu,CNRS, Pt Courrier 131, F-91191 Gif Sur Yvette, France. EM matthieu.bethermin@cea.fr RI Magdis, Georgios/C-7295-2014; amblard, alexandre/L-7694-2014; Ivison, R./G-4450-2011; Vaccari, Mattia/R-3431-2016; OI Magdis, Georgios/0000-0002-4872-2294; amblard, alexandre/0000-0002-2212-5395; Ivison, R./0000-0001-5118-1313; Vaccari, Mattia/0000-0002-6748-0577; Scott, Douglas/0000-0002-6878-9840; Marchetti, Lucia/0000-0003-3948-7621; Seymour, Nicholas/0000-0003-3506-5536; Bethermin, Matthieu/0000-0002-3915-2015 FU CSA (Canada); NAOC (China); CEA (France); CNES (France); CNRS (France); ASI (Italy); MCINN (Spain); SNSB (Sweden); STFC (UK); UKSA (UK); NASA (USA); ERC-StG [UPGAL 240039]; Science and Technology Facilities Council [ST/F002858/1, ST/I000976/1]; Italian Space Agency (ASI Herschel Science Contract) [I/005/07/0] FX We thank the COSMOS and GOODS teams for releasing publicly their data. Thanks to Georges Helou for suggesting that the distribution of the colors is more likely log-normal than normal. MB thank Herve Dole for his advices about stacking, and Elizabeth Fernandez for providing a mock catalog from the Bethermin et al. model. SPIRE has been developed by a consortium of institutes led by Cardiff Univ. (UK) and including Univ. Lethbridge (Canada); NAOC (China); CEA, LAM (France); IFSI, Univ. Padua (Italy); IAC (Spain); Stockholm Observatory (Sweden); Imperial College London, RAL, UCL-MSSL, UKATC, Univ. Sussex (UK); Caltech, JPL, NHSC, Univ. Colorado (USA). This development has been supported by national funding agencies: CSA (Canada); NAOC (China); CEA, CNES, CNRS (France); ASI (Italy); MCINN (Spain); SNSB (Sweden); STFC, UKSA (UK); and NASA (USA). MB acknowledge financial support from ERC-StG grant UPGAL 240039. SJO acknowledge support from the Science and Technology Facilities Council [grant number ST/F002858/1] and [grant number ST/I000976/1]. M. V. was supported by the Italian Space Agency (ASI Herschel Science Contract I/005/07/0). The data presented in this paper will be released through the Herschel Database in Marseille HeDaM (hedam.oamp.fr/HerMES). NR 73 TC 72 Z9 72 U1 0 U2 1 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 1432-0746 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JUN PY 2012 VL 542 AR A58 DI 10.1051/0004-6361/201118698 PG 23 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 965YI UT WOS:000305803300063 ER PT J AU Nooraee, N Callanan, PJ Barnard, R Garcia, MR Murray, SS Moss, A AF Nooraee, N. Callanan, P. J. Barnard, R. Garcia, M. R. Murray, S. S. Moss, A. TI Chandra, Swift, and HST studies of the CXOM31 J004253.1+411422 Very bright X-ray transient in M31 SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE X-rays: general; X-rays: binaries; galaxies: groups: individual: M 31 ID LIGHT CURVES; BINARIES; NOVAE; DISC AB Context. A very bright transient X-ray source, CXOM31 J004253.1+411422, was found by Chandra/HRC in the M31 bulge. We present Chandra, Swift, and Hubble Space Telescope (HST) observations of this source. Aims. Since this source is the brightest known X-ray transient in M31, we want to study its nature with Chandra and Swift. Comparing the results of Galactic transients and M31 transients can give a better understanding of the nature of extragalactic binaries. Methods. We fitted disk black body and power law models to X-ray data from Chandra and Swift. Follow-up HST/ACS imaging during and after the outburst revealed a transient optical counterpart. Results. Our HST observations show an optical counterpart with optical magnitude B = 23.91 +/- 0.08. Using the empirical relations between X-ray luminosity and absolute visual magnitude, we estimate the orbital period of the system is about similar to 15 h. Conclusions. Our optical identification of the brightest X-ray transient so far discovered in M31 suggests an orbital period of about 15 h. The decay light curve is consistent with previous models of X-ray novae outbursts. C1 [Nooraee, N.] Dublin Inst Adv Studies, Dublin 2, Ireland. [Nooraee, N.; Callanan, P. J.; Moss, A.] Natl Univ Ireland Univ Coll Cork, Cork, Ireland. [Barnard, R.; Garcia, M. R.] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. [Murray, S. S.] Johns Hopkins Univ, Baltimore, MD 21218 USA. RP Nooraee, N (reprint author), Dublin Inst Adv Studies, 31 Fitzwilliam Pl, Dublin 2, Ireland. EM nnooraee@cp.dias.ie NR 22 TC 6 Z9 6 U1 0 U2 2 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JUN PY 2012 VL 542 AR A120 DI 10.1051/0004-6361/201118109 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 965YI UT WOS:000305803300026 ER PT J AU Oppermann, N Junklewitz, H Robbers, G Bell, MR Ensslin, TA Bonafede, A Braun, R Brown, JC Clarke, TE Feain, IJ Gaensler, BM Hammond, A Harvey-Smith, L Heald, G Johnston-Hollitt, M Klein, U Kronberg, PP Mao, SA McClure-Griffiths, NM O'Sullivan, SP Pratley, L Robishaw, T Roy, S Schnitzeler, DHFM Sotomayor-Beltran, C Stevens, J Stil, JM Sunstrum, C Tanna, A Taylor, AR Van Eck, CL AF Oppermann, N. Junklewitz, H. Robbers, G. Bell, M. R. Ensslin, T. A. Bonafede, A. Braun, R. Brown, J. C. Clarke, T. E. Feain, I. J. Gaensler, B. M. Hammond, A. Harvey-Smith, L. Heald, G. Johnston-Hollitt, M. Klein, U. Kronberg, P. P. Mao, S. A. McClure-Griffiths, N. M. O'Sullivan, S. P. Pratley, L. Robishaw, T. Roy, S. Schnitzeler, D. H. F. M. Sotomayor-Beltran, C. Stevens, J. Stil, J. M. Sunstrum, C. Tanna, A. Taylor, A. R. Van Eck, C. L. TI An improved map of the Galactic Faraday sky SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE galaxies: magnetic fields; Galaxy: structure; ISM: magnetic fields; radio continuum: ISM; methods: data analysis; techniques: polarimetric ID EXTRAGALACTIC RADIO-SOURCES; SCALE MAGNETIC-FIELD; WESTERBORK SINGS SURVEY; ROTATION MEASURE SKY; MILKY-WAY; PLANE SURVEY; INTERSTELLAR-MEDIUM; B3-VLA SAMPLE; SPIRAL ARMS; OBSERVATIONAL CONSTRAINTS AB We aim to summarize the current state of knowledge regarding Galactic Faraday rotation in an all-sky map of the Galactic Faraday depth. For this we have assembled the most extensive catalog of Faraday rotation data of compact extragalactic polarized radio sources to date. In the map-making procedure we used a recently developed algorithm that reconstructs the map and the power spectrum of a statistically isotropic and homogeneous field while taking into account uncertainties in the noise statistics. This procedure is able to identify some rotation angles that are offset by an integer multiple of pi. The resulting map can be seen as an improved version of earlier such maps and is made publicly available, along with a map of its uncertainty. For the angular power spectrum we find a power law behavior C-l proportional to l(-2.17) for a Faraday sky where an overall variance profile as a function of Galactic latitude has been removed, in agreement with earlier work. We show that this is in accordance with a 3D Fourier power spectrum P(k) proportional to k(-2.17) of the underlying field n(e)B(r) under simplifying geometrical and statistical assumptions. C1 [Oppermann, N.; Junklewitz, H.; Robbers, G.; Bell, M. R.; Ensslin, T. A.] Max Planck Inst Astrophys, D-85741 Garching, Germany. [Bonafede, A.] Jacobs Univ Bremen, D-28759 Bremen, Germany. [Braun, R.; Feain, I. J.; Harvey-Smith, L.; Mao, S. A.; McClure-Griffiths, N. M.; O'Sullivan, S. P.; Schnitzeler, D. H. F. M.; Stevens, J.] Australia Telescope Natl Facil, CSIRO Astron & Space Sci, Epping, NSW 1710, Australia. [Brown, J. C.; Stil, J. M.; Sunstrum, C.; Taylor, A. R.; Van Eck, C. L.] Univ Calgary, Dept Phys & Astron, Calgary, AB T2N 1N4, Canada. [Clarke, T. E.] USN, Res Lab, Washington, DC 20375 USA. [Gaensler, B. M.; Hammond, A.] Univ Sydney, Sch Phys, Sydney Inst Astron, Sydney, NSW 2006, Australia. [Heald, G.] ASTRON, NL-7990 AA Dwingeloo, Netherlands. [Johnston-Hollitt, M.; Pratley, L.] Victoria Univ Wellington, Sch Chem & Phys Sci, Wellington 6140, New Zealand. [Klein, U.] Univ Bonn, Argelander Inst Astron, D-53121 Bonn, Germany. [Kronberg, P. P.] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada. [Kronberg, P. P.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Mao, S. A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Robishaw, T.] HIA NRC, Domin Radio Astrophys Observ, Penticton, BC V2A 6J9, Canada. [Roy, S.] TIFR, Natl Ctr Radio Astrophys, Pune 411007, Maharashtra, India. [Schnitzeler, D. H. F. M.] Max Planck Inst Radioastron, D-53121 Bonn, Germany. [Sotomayor-Beltran, C.] Ruhr Univ Bochum, Inst Astron, D-44780 Bochum, Germany. [Tanna, A.] Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia. RP Oppermann, N (reprint author), Max Planck Inst Astrophys, Karl Schwarzschild Str 1, D-85741 Garching, Germany. EM niels@mpa-garching.mpg.de RI Johnston-Hollitt, Melanie/B-1803-2013; Gaensler, Bryan/F-8655-2010; Robishaw, Timothy/B-2654-2014; OI Robishaw, Timothy/0000-0002-4217-5138; McClure-Griffiths, Naomi/0000-0003-2730-957X; Gaensler, Bryan/0000-0002-3382-9558 FU 6.1 Base funding; Australian Research Council [FF0561298, FL100100114, FS100100033]; Victoria University of Wellington Faculty of Science; Marsden Development Fund; Commonwealth of Australia FX The authors would like to thank Steven R. Spangler for the valuable contributions he made to this paper as a referee. N.O. thanks Marco Selig and Maximilian Ullherr for fruitful discussions during the genesis of this work. Some of the results in this paper have been derived using the HEALPix (Gorski et al. 2005) package. The calculations were performed using the sage (Stein et al. 2010) mathematics software. This research has made use of NASA's Astrophysics Data System. This research was performed in the framework of the DFG Forschergruppe 1254 "Magnetisation of Interstellar and Intergalactic Media: The Prospects of Low-Frequency Radio Observations". Basic research in radio astronomy at the Naval Research Laboratory is funded by 6.1 Base funding. B. M. G. and T. R. acknowledge the support of the Australian Research Council through grants FF0561298, FL100100114 and FS100100033. M.J.-H. and L. P. acknowledge support of the Victoria University of Wellington Faculty of Science and Marsden Development Fund research grants awarded to M.J.-H. The Australia Telescope Compact Array is part of the Australia Telescope National Facility, which is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO. This paper includes archived data obtained through the Australia Telescope Online Archive9. NR 115 TC 67 Z9 68 U1 1 U2 4 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 EI 1432-0746 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JUN PY 2012 VL 542 AR A93 DI 10.1051/0004-6361/201118526 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 965YI UT WOS:000305803300050 ER PT J AU Ranalli, P Comastri, A Zamorani, G Cappelluti, N Civano, F Georgantopoulos, I Gilli, R Schinnerer, E Smolcic, V Vignali, C AF Ranalli, P. Comastri, A. Zamorani, G. Cappelluti, N. Civano, F. Georgantopoulos, I. Gilli, R. Schinnerer, E. Smolcic, V. Vignali, C. TI X-ray properties of radio-selected star forming galaxies in the Chandra-COSMOS survey SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE X-rays: galaxies; radio continuum: galaxies; galaxies: fundamental parameters; galaxies: star formation; galaxies: active; galaxies: high-redshift ID DEEP FIELD-NORTH; ACTIVE GALACTIC NUCLEUS; FORMATION RATE INDICATOR; XMM-NEWTON; LUMINOSITY FUNCTION; STARBURST GALAXIES; FORMATION HISTORY; SOURCE POPULATION; SOURCE CATALOG; VLA SURVEY AB X-ray surveys contain sizable numbers of star forming galaxies, beyond the AGN which usually make the majority of detections. Many methods to separate the two populations are used in the literature, based on X-ray and multiwavelength properties. We aim at a detailed test of the classification schemes and to study the X-ray properties of the resulting samples. We build on a sample of galaxies selected at 1.4 GHz in the VLA-COSMOS survey, classified by Smolcic et al. (2008, ApJS, 177, 14) according to their optical colours and observed with Chandra. A similarly selected control sample of AGN is also used for comparison. We review some X-ray based classification criteria and check how they affect the sample composition. The efficiency of the classification scheme devised by Smolcic et al. is such that similar to 30% of composite/misclassified objects are expected because of the higher X-ray brightness of AGN with respect to galaxies. The latter fraction is actually 50% in the X-ray detected sources, while it is expected to be much lower among X-ray undetected sources. Indeed, the analysis of the stacked spectrum of undetected sources shows, consistently, strongly different properties between the AGN and galaxy samples. X-ray based selection criteria are then used to refine both samples. The radio/X-ray luminosity correlation for star forming galaxies is found to hold with the same X-ray/radio ratio valid for nearby galaxies. Some evolution of the ratio may be possible for sources at high redshift or high luminosity, tough it is likely explained by a bias arising from the radio selection. Finally, we discuss the X-ray number counts of star forming galaxies from the VLA- and C-COSMOS surveys according to different selection criteria, and compare them to the similar determination from the Chandra deep fields. The classification scheme proposed here may find application in future works and surveys. C1 [Ranalli, P.; Vignali, C.] Univ Bologna, Dipartimento Astron, I-40127 Bologna, Italy. [Ranalli, P.; Georgantopoulos, I.] Natl Observ Athens, Inst Astron & Astrophys, Athens 15236, Greece. [Comastri, A.; Zamorani, G.; Cappelluti, N.; Georgantopoulos, I.; Gilli, R.] Osservatorio Astron Bologna, INAF, I-40127 Bologna, Italy. [Civano, F.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Schinnerer, E.] Max Planck Inst Astron, D-69117 Heidelberg, Germany. [Smolcic, V.] Argelander Inst Astron, D-53121 Bonn, Germany. [Smolcic, V.] European So Observ, D-85748 Garching, Germany. [Smolcic, V.] Univ Zagreb, Dept Phys, Zagreb 10002, Croatia. RP Ranalli, P (reprint author), Univ Bologna, Dipartimento Astron, Via Ranzani 1, I-40127 Bologna, Italy. EM piero.ranalli@oabo.inaf.it RI Comastri, Andrea/O-9543-2015; Gilli, Roberto/P-1110-2015; Vignali, Cristian/J-4974-2012; Ranalli, Piero/K-6363-2013; Georgantopoulos, Ioannis/L-3687-2013; OI Comastri, Andrea/0000-0003-3451-9970; Gilli, Roberto/0000-0001-8121-6177; Vignali, Cristian/0000-0002-8853-9611; Ranalli, Piero/0000-0003-3956-755X; Cappelluti, Nico/0000-0002-1697-186X; Zamorani, Giovanni/0000-0002-2318-301X; Schinnerer, Eva/0000-0002-3933-7677 FU Greek General Secretariat of Research and Technology [ASI-INAF I/009/10/0]; European Union [229517] FX We thank an anonymous referee whose comments have contributed to improve the presentation of this paper. This research has made use of the Perl Data Language (PDL) which provides a high-level numerical functionality for the Perl programming language (Glazebrook & Economou 1997, http://pdl.perl.org). We acknowledge financial contribution from the agreement ASI-INAF I/009/10/0, and a grant from the Greek General Secretariat of Research and Technology in the framework of the program Support of Postdoctoral Researchers. The research leading to these results has received funding from the European Union's Seventh Framework programme under grant agreement 229517. NR 76 TC 5 Z9 5 U1 0 U2 4 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JUN PY 2012 VL 542 AR A16 DI 10.1051/0004-6361/201118723 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 965YI UT WOS:000305803300068 ER PT J AU Schneider, PC Gunther, HM Schmitt, JHMM AF Schneider, P. C. Guenther, H. M. Schmitt, J. H. M. M. TI The evolution of the X-ray emission of HH 2 Investigating heating and cooling processes SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE Herbig-Haro objects; ISM: jets and outflows; ISM: individual objects: HH 2; X-rays: ISM; stars: winds, outflows ID HERBIG-HARO OBJECT-1; DG-TAURI; TELESCOPE OBSERVATIONS; PROTOSTELLAR JET; ATOMIC DATABASE; PROPER MOTIONS; YOUNG STARS; MASS-LOSS; DISCOVERY; ACCRETION AB Young stellar objects often drive powerful bipolar outflows, which evolve on timescales of a few years. An increasing number of these outflows has been detected in X-rays implying the existence of million degree plasma almost co-spatial with the lower temperature gas observed in the optical and near-infrared. The details of the heating and cooling processes of the X-ray emitting part of these so-called Herbig-Haro objects are still ambiguous, e. g., whether the cooling is dominated by expansion, radiation, or thermal conduction. We present a second epoch Chandra observation of the first X-ray detected Herbig-Haro object (HH 2) and derive the proper-motion of the X-ray emitting plasma and its cooling history. We argue that the most likely explanation for the constancy of the X-ray luminosity, the alignment with the optical emission and the proper-motion is that the cooling is dominated by radiative losses leading to cooling times exceeding a decade. We explain that a strong shock caused by fast material ramming into slower gas in front of it about ten years ago can explain the X-ray emission while being compatible with the available multi-wavelength data of HH 2. C1 [Schneider, P. C.; Schmitt, J. H. M. M.] Hamburger Sternwarte, D-21029 Hamburg, Germany. [Guenther, H. M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Schneider, PC (reprint author), Hamburger Sternwarte, Gojenbergsweg 112, D-21029 Hamburg, Germany. EM cschneider@hs.uni-hamburg.de OI Gunther, Hans Moritz/0000-0003-4243-2840 FU DLR [50 OR 1112]; NASA [GO1-12067X, NAS8-03060]; Chandra X-ray Observatory Center FX PCS was supported by the DLR under grant 50 OR 1112. HMG was supported by NASA through Chandra Award Number GO1-12067X issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of NASA under contract NAS8-03060. The work used data obtained by the Chandra X-ray Observatory and by the Hubble Space Telescope. NR 35 TC 2 Z9 2 U1 1 U2 1 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JUN PY 2012 VL 542 AR A123 DI 10.1051/0004-6361/201118605 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 965YI UT WOS:000305803300054 ER PT J AU Prager, KC Mazet, JAK Munson, L Cleaveland, S Donnelly, CA Dubovi, EJ Gunther, MS Lines, R Mills, G Davies-Mostert, HT McNutt, JW Rasmussen, G Terio, K Woodroffe, R AF Prager, K. C. Mazet, Jonna A. K. Munson, Linda Cleaveland, Sarah Donnelly, Christl A. Dubovi, Edward J. Gunther, Micaela Szykman Lines, Robin Mills, Gus Davies-Mostert, Harriet T. McNutt, J. Weldon Rasmussen, Gregory Terio, Karen Woodroffe, Rosie TI The effect of protected areas on pathogen exposure in endangered African wild dog (Lycaon pictus) populations SO BIOLOGICAL CONSERVATION LA English DT Article DE African wild dog; Canine distemper virus; Rabies virus; Domestic dog; Infectious disease; Exposure risk ID CANINE-DISTEMPER VIRUS; MADIKWE-GAME-RESERVE; DOMESTIC DOGS; SOUTH-AFRICA; SERENGETI ECOSYSTEM; ANTIBODY-RESPONSE; TSUMKWE DISTRICT; SEROLOGIC SURVEY; IMMUNE-RESPONSE; RABIES VACCINE AB Infectious diseases impact African wild dogs (Lycaon pictus), but the nature and magnitude of this threat likely varies among populations according to different factors, such as the presence and prevalence of pathogens and land-use characteristics. We systematically evaluated these factors to assist development of locally appropriate strategies to mitigate disease risk. Wild dogs from 16 sites representing five unconnected populations were examined for rabies virus, canine distemper virus (CDV), canine parvovirus, canine coronavirus, and Babesia spp. exposure. Analyses revealed widespread exposure to viral pathogens, but Babesia was never detected. Exposure to CDV was associated with unprotected and protected-unfenced areas where wild dogs likely have a high probability of domestic dog contact and, in the case of protected-unfenced areas, likely reside amongst high wildlife densities. Our findings also suggest that domestic dog contact may increase rabies and coronavirus exposure risk. Therefore, domestic dogs may be a source of CDV, rabies and coronavirus, while wildlife may also play an important role in CDV transmission dynamics. Relatively high parvovirus seroprevalence across land-use types suggests that it might persist in the absence of spillover from domestic dogs. Should intervention be needed to control pathogens in wild dogs, efforts to prevent rabies and coronavirus exposure might be directed at reducing infection in the presumed domestic dog reservoir through vaccination. If prevention of CDV and parvovirus infections were deemed a management necessity, control of disease in domestic dogs may be insufficient to reduce transmission risks, and vaccination of wild dogs themselves may be the optimal strategy. (C) 2012 Elsevier Ltd. All rights reserved. C1 [Prager, K. C.; Mazet, Jonna A. K.; Munson, Linda; Woodroffe, Rosie] Univ Calif Davis, Wildlife Hlth Ctr, Davis, CA 95616 USA. [Cleaveland, Sarah] Univ Glasgow, Boyd Orr Ctr Populat & Ecosyst Hlth, Glasgow, Lanark, Scotland. [Donnelly, Christl A.] Univ London Imperial Coll Sci Technol & Med, Dept Infect Dis Epidemiol, MRC Ctr Outbreak Anal & Modelling, London W2 1PG, England. [Dubovi, Edward J.] Cornell Univ, Coll Vet Med, Anim Hlth Diagnost Ctr, Ithaca, NY 14852 USA. [Gunther, Micaela Szykman] Humboldt State Univ, Dept Wildlife, Arcata, CA 95521 USA. [Gunther, Micaela Szykman] Natl Zool Pk, Smithsonian Conservat Biol Inst, Front Royal, VA 22630 USA. [Lines, Robin] Zambian Carnivore Programme, Mfuwe, Eastern Provinc, Zambia. [Mills, Gus] Kgalagadi Cheetah Project, ZA-8800 Upington, South Africa. [Davies-Mostert, Harriet T.] Endangered Wildlife Trust, ZA-1645 Modderfontein, Gauteng, South Africa. [Davies-Mostert, Harriet T.; Rasmussen, Gregory] Univ Oxford, Dept Zool, Recanati Kaplan Ctr, Wildlife Conservat Res Unit, Abingdon OX13 5QL, Oxon, England. [McNutt, J. Weldon] Botswana Predator Conservat Project, Moun, Botswana. [Terio, Karen] Univ Illinois, Zool Pathol Program, Maywood, IL USA. [Woodroffe, Rosie] Regents Pk, Inst Zool, London NW1 4RY, England. RP Prager, KC (reprint author), Univ Calif Davis, Wildlife Hlth Ctr, 1 Shields Ave, Davis, CA 95616 USA. EM kcprager@ucla.edu OI Szykman Gunther, Micaela/0000-0002-7822-8094; Donnelly, Christl/0000-0002-0195-2463 FU Morris Animal Foundation; African Wildlife Foundation; Disney Wildlife Conservation Fund; National Geographic Society; SeaWorld-Busch Gardens Conservation Fund; Wildlife Conservation Society; Frankfurt Zoological Society; Smithsonian Institution/Smithsonian Conservation Biology Institute; AZA Conservation Endowment Fund; MRC FX The Morris Animal Foundation provided funding to K.P. and R.W.; long-term support for R.W.'s work also came from the African Wildlife Foundation, Disney Wildlife Conservation Fund, National Geographic Society, SeaWorld-Busch Gardens Conservation Fund and the Wildlife Conservation Society. The Frankfurt Zoological Society provided funding for work in the Serengeti in the 1980s and early 1990s, and the Smithsonian Institution/Smithsonian Conservation Biology Institute and the AZA Conservation Endowment Fund provided funding for M.S.G. C.A.D. thanks MRC for Centre funding. These funders had no role in study design, collection and analysis and interpretation of data, in the writing of the report, and in the decision to submit the paper for publication. The authors would like to thank Charles Rupprecht at the Centers for Disease Control and Prevention for generously running our rabies serology, Gabriella Flacke and Penny Spiering for providing detailed data on many of the wild dogs from the South African metapopulation, Stacy Schultz for technical assistance with the Babesia qPCR, and the members of the South Africa wild dog advisory group. The authors would also like to acknowledge members of the Wild Dog Advisory Group, South Africa, in particular Steve Dell, Declan Hofmeyr and Katherine Potgierter, for providing samples and the staff of South African National Parks. The authors would like to thank two anonymous reviewers for their helpful comments and suggestions. NR 61 TC 10 Z9 10 U1 5 U2 86 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0006-3207 EI 1873-2917 J9 BIOL CONSERV JI Biol. Conserv. PD JUN PY 2012 VL 150 IS 1 BP 15 EP 22 DI 10.1016/j.biocon.2012.03.005 PG 8 WC Biodiversity Conservation; Ecology; Environmental Sciences SC Biodiversity & Conservation; Environmental Sciences & Ecology GA 964VF UT WOS:000305724100003 ER PT J AU Nolan, GA McFarland, AL Zajicek, JM Waliczek, TM AF Nolan, Geralyn A. McFarland, Amy L. Zajicek, Jayne M. Waliczek, Tina M. TI The Effects of Nutrition Education and Gardening on Attitudes, Preferences, and Knowledge of Minority Second to Fifth Graders in the Rio Grande Valley Toward Fruit and Vegetables SO HORTTECHNOLOGY LA English DT Article DE social issues; obesity; Type II diabetes; horticulture; health; fruit and vegetable questionnaire ID CARDIOVASCULAR-DISEASE; CHILDHOOD OBESITY; CHILDRENS FRUIT; PREVENT OBESITY; UNITED-STATES; CONSUMPTION; PROGRAM; HEALTH; ADOLESCENTS; CURRICULUM AB Child obesity has become a national concern. Obesity in children ages 6-17 years has more than doubled in the past 30 years. Only 20% of children today consume the recommended daily servings of fruit and vegetables. This trend is even more pronounced in minority populations. Past studies have reported a horticulture-based curriculum, including gardening, can improve children's attitudes toward eating fruit and vegetables. To investigate whether children of a minority population can benefit from gardening combined with a curriculum on nutrition, research was conducted with elementary schools in a primarily Hispanic region of Texas. Elementary school teachers participating in this research agreed to have school gardens and complete all activities in a curriculum on nutrition provided to them through the Texas Agrilife Extension Service. One hundred and forty-one children in the participating schools completed a pre- and posttest evaluating their nutritional knowledge, preference for fruit and vegetables, and snack choices before and after a gardening program supplemented with nutrition education. Differences were detected between pre- and posttest scores for all three variables. After comparing pre- and posttest scores, it was concluded that gardening and nutritional instruction had a positive effect on students' nutritional knowledge, fruit and vegetable preference (FVP), and snack choices. C1 [Waliczek, Tina M.] Texas State Univ San Marcos, Dept Agr, San Marcos, TX 78666 USA. [Nolan, Geralyn A.; Zajicek, Jayne M.] Texas A&M Univ, Dept Hort Sci, College Stn, TX 77843 USA. [McFarland, Amy L.] Smithsonian Inst, Smithsonian Gardens, Washington, DC 20013 USA. RP Waliczek, TM (reprint author), Texas State Univ San Marcos, Dept Agr, San Marcos, TX 78666 USA. EM tc10@txstate.edu NR 42 TC 5 Z9 5 U1 4 U2 50 PU AMER SOC HORTICULTURAL SCIENCE PI ALEXANDRIA PA 113 S WEST ST, STE 200, ALEXANDRIA, VA 22314-2851 USA SN 1063-0198 J9 HORTTECHNOLOGY JI HortTechnology PD JUN PY 2012 VL 22 IS 3 BP 299 EP 304 PG 6 WC Horticulture SC Agriculture GA 967AF UT WOS:000305877800004 ER PT J AU Scarlata, CD Elias, BA Godwin, JR Powell, RA Shepherdson, D Shipley, LA Brown, JL AF Scarlata, Candace D. Elias, Becky A. Godwin, John R. Powell, Roger A. Shepherdson, David Shipley, Lisa A. Brown, Janine L. TI Relationship between fecal hormone concentrations and reproductive success in captive pygmy rabbits (Brachylagus idahoensis) SO JOURNAL OF MAMMALOGY LA English DT Article DE captive breeding; conception; fecal glucocorticoids; hormones; lactation; litter size; mating; progestagens; stress; reproduction ID DOMESTIC-ANIMALS; STRESS RESPONSES; LITTER SIZE; PROGESTERONE; PREGNANCY; SHEEP; GLUCOCORTICOIDS; CONSERVATION; WILDLIFE; BEHAVIOR AB The Columbia Basin pygmy rabbit (Brachylagus idahoensis) is critically endangered and the focus of a captive-breeding program. However, reproductive success in captivity to date has not been sufficient to sustain reintroduction efforts. The goal of this study was to investigate patterns of fecal progestagen and glucocorticoid excretion in females during mating, gestation, and lactation and identify hormonal relationships to reproductive success. Fresh fecal samples were collected from 48 adult, female rabbits over 3 breeding seasons at a frequency of 4-7 samples per week. Results showed that a large (17-fold) increase in progestagen concentrations 1 day after mating provides a reliable means of determining if a successful mating occurred. In general, higher glucocorticoid concentrations during the breeding season, specifically during mating and gestation, were associated with lower reproductive success. Females that failed to conceive during the breeding season had higher glucocorticoid and lower progestagen baseline concentrations than females that did conceive. Glucocorticoid excretion during late gestation, but not lactation, was negatively associated with litter success, suggesting it affects offspring survival more during the prenatal than the postnatal period. Progestagen and glucocorticoid concentrations at the end of gestation were positively related to litter size, which may be an important factor in juvenile survival. In summary, higher concentrations of fecal glucocorticoids during the breeding season were associated with reduced conception rates and survival of subsequent litters. Ultimately, identifying what factors cause elevated glucocorticoids in pygmy rabbits could provide opportunities to alleviate negative stressors and increase the reproductive output of the captive population. C1 [Brown, Janine L.] Smithsonian Conservat Biol Inst, Ctr Species Survival, Front Royal, VA 22630 USA. [Scarlata, Candace D.; Godwin, John R.; Powell, Roger A.] N Carolina State Univ, Dept Biol, Raleigh, NC 27695 USA. [Elias, Becky A.; Shipley, Lisa A.] Washington State Univ, Dept Nat Resource Sci, Pullman, WA 99164 USA. [Shepherdson, David] Oregon Zoo, Portland, OR 97221 USA. RP Brown, JL (reprint author), Smithsonian Conservat Biol Inst, Ctr Species Survival, Natl Zool Pk,1500 Remount Rd, Front Royal, VA 22630 USA. EM brownjan@si.edu FU Morris Animal Foundation; Smithsonian Institution; Washington Department of Fish and Wildlife; North Carolina State University; Washington State University; Friends of the National Zoo FX We thank all the pygmy rabbit keepers (M. Illig, B. Elias, J. Jackson-VonDohlen, A. Williams, H. Starr, R. Lamson, K. Walker, and L. Klinski) for their dedication to the rabbits and for all the hours spent collecting samples and behavioral data. In addition, thanks to N. Presley, N. Abbondanza, and S. Putnam for their patience and technical assistance in the laboratory. We are grateful to H. Patisaul and S. Kennedy Stoskopf for insightful thoughts on the development of this study and for helpful comments on drafts of the manuscript. Funding for this project was provided by a large grant from the Morris Animal Foundation and several supporting grants from the Smithsonian Institution, Friends of the National Zoo, Washington Department of Fish and Wildlife, North Carolina State University, and Washington State University. NR 55 TC 8 Z9 8 U1 6 U2 38 PU OXFORD UNIV PRESS INC PI CARY PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA SN 0022-2372 EI 1545-1542 J9 J MAMMAL JI J. Mammal. PD JUN PY 2012 VL 93 IS 3 BP 759 EP 770 DI 10.1644/11-MAMM-A-223.1 PG 12 WC Zoology SC Zoology GA 969HA UT WOS:000306045100015 ER PT J AU Woodman, N AF Woodman, Neal TI Taxonomic status and relationships of Sorex obscurus parvidens Jackson, 1921, from California SO JOURNAL OF MAMMALOGY LA English DT Article DE Eulipotyphla; Insectivora; morphology; shrew; Soricidae; Soricomorpha ID ORNATUS AB The San Bernardino shrew, Sorex obscurus parvidens Jackson, 1921, is a population inhabiting the San Bernardino and San Gabriel mountains of southern California. For the past 9 decades, this population has been considered either a subspecies of S. obscurus Merriam, 1895, S. vagrans Baird, 1857, or S. monticola Merriam, 1890; or an undifferentiated population of S. ornatus Merriam, 1895. Aside from the changing taxonomic landscape that contextualizes the genus Sorex, previous study of S. obscurus parvidens has been retarded by the perception of limited available samples (typically, fewer than 8 specimens); misinterpretation of the provenance of specimens identified as S. obscurus parvidens; misunderstanding of the type locality; and inclusion of specimens of this taxon in the type series of another species with which S. obscurus parvidens has been both contrasted and allied at different times. My investigation of S. obscurus parvidens indicates that it is a distinctive population that is morphologically closest to S. ornatus, and it corresponds to the Southern Clade of that species. However, the appropriate names for deep clades within S. ornatus remain uncertain. Until this uncertainty is resolved, S. obscurus parvidens should be considered a distinctive population within S. ornatus; for conservation purposes, it should be recognized as S. ornatus parvidens. C1 Smithsonian Inst, Natl Museum Nat Hist, Patuxent Wildlife Res Ctr, US Geol Survey, Washington, DC 20013 USA. RP Woodman, N (reprint author), Smithsonian Inst, Natl Museum Nat Hist, Patuxent Wildlife Res Ctr, US Geol Survey, Washington, DC 20013 USA. EM woodmann@si.edu OI Woodman, Neal/0000-0003-2689-7373 NR 32 TC 0 Z9 1 U1 0 U2 3 PU OXFORD UNIV PRESS INC PI CARY PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA SN 0022-2372 EI 1545-1542 J9 J MAMMAL JI J. Mammal. PD JUN PY 2012 VL 93 IS 3 BP 826 EP 838 DI 10.1644/11-MAMM-A-354.1 PG 13 WC Zoology SC Zoology GA 969HA UT WOS:000306045100022 ER PT J AU Hunt, G AF Hunt, Gene TI Measuring rates of phenotypic evolution and the inseparability of tempo and mode SO PALEOBIOLOGY LA English DT Article ID NATURAL-SELECTION; FOSSIL RECORD; RANDOM-WALKS; CONTEMPORARY MICROEVOLUTION; QUANTITATIVE GENETICS; STABILIZING SELECTION; PHYLETIC EVOLUTION; MODERN LIFE; BODY-SIZE; EXTINCTION AB Rates of phenotypic evolution are central to many issues in paleontology, but traditional rate metrics such as darwins or haldanes are seldom used because of their strong dependence on interval length. In this paper, I argue that rates are usefully thought of as model parameters that relate magnitudes of evolutionary divergence to elapsed time. Starting with models of directional evolution, random walks, and stasis, T derive for each a reasonable rate metric. These metrics can be linked to existing approaches in evolutionary biology, and simulations show that they can be estimated accurately at any temporal resolution via maximum likelihood, but only when that metric's underlying model is true. The estimation of generational rates of a random walk under realistic paleontological conditions is compared with simulations to that of a prominent alternative approach, Gingerich's LRI (log-rate, log-interval) method. Generational rates are estimated poorly by LRI; they often reflect sampling error more than the actual pace of change. Further simulations show that under some realistic conditions, it is simply not possible to infer generational rates from coarsely sampled populations. These modeling results indicate a complex dependence between evolutionary mode and the measurement of evolutionary rates, and that there is unlikely to be a rate metric that works well for all traits and time scales. Compilations of paleontological and phylogenetic data indicate that all of the three rate metrics derived here show some relationship with interval length. Although there is no perfect rate metric, at present the most practical choices derive from the parameters of the stasis and random walk models. The latter, called the step variance, is particularly promising as a rate metric in paleontology and comparative biology. C1 Smithsonian Inst, Natl Museum Nat Hist, Dept Paleobiol, Washington, DC 20560 USA. RP Hunt, G (reprint author), Smithsonian Inst, Natl Museum Nat Hist, Dept Paleobiol, Washington, DC 20560 USA. EM hunte@si.edu RI Hunt, Gene/B-3783-2010 OI Hunt, Gene/0000-0001-6430-5020 NR 68 TC 36 Z9 36 U1 3 U2 52 PU PALEONTOLOGICAL SOC INC PI LAWRENCE PA 810 EAST 10TH ST, LAWRENCE, KS 66044 USA SN 0094-8373 J9 PALEOBIOLOGY JI Paleobiology PD SUM PY 2012 VL 38 IS 3 BP 351 EP 373 DI 10.1666/11047.1 PG 23 WC Biodiversity Conservation; Ecology; Evolutionary Biology; Paleontology SC Biodiversity & Conservation; Environmental Sciences & Ecology; Evolutionary Biology; Paleontology GA 966YZ UT WOS:000305874600001 ER PT J AU Pardo-Diaz, C Salazar, C Baxter, SW Merot, C Figueiredo-Ready, W Joron, M McMillan, WO Jiggins, CD AF Pardo-Diaz, Carolina Salazar, Camilo Baxter, Simon W. Merot, Claire Figueiredo-Ready, Wilsea Joron, Mathieu McMillan, W. Owen Jiggins, Chris D. TI Adaptive Introgression across Species Boundaries in Heliconius Butterflies SO PLOS GENETICS LA English DT Article ID DNA-SEQUENCE DATA; DROSOPHILA-PSEUDOOBSCURA; NATURAL HYBRIDIZATION; CONVERGENT EVOLUTION; HYBRID SPECIATION; SEXUAL SELECTION; PATTERN MIMICRY; GENE FLOW; HISTORY; RESISTANCE AB It is widely documented that hybridisation occurs between many closely related species, but the importance of introgression in adaptive evolution remains unclear, especially in animals. Here, we have examined the role of introgressive hybridisation in transferring adaptations between mimetic Heliconius butterflies, taking advantage of the recent identification of a gene regulating red wing patterns in this genus. By sequencing regions both linked and unlinked to the red colour locus, we found a region that displays an almost perfect genotype by phenotype association across four species, H. melpomene, H. cydno, H. timareta, and H. heurippa. This particular segment is located 70 kb downstream of the red colour specification gene optix, and coalescent analysis indicates repeated introgression of adaptive alleles from H. melpomene into the H. cydno species clade. Our analytical methods complement recent genome scale data for the same region and suggest adaptive introgression has a crucial role in generating adaptive wing colour diversity in this group of butterflies. C1 [Pardo-Diaz, Carolina; Salazar, Camilo; Baxter, Simon W.; Jiggins, Chris D.] Univ Cambridge, Dept Zool, Cambridge, England. [Salazar, Camilo; McMillan, W. Owen; Jiggins, Chris D.] Smithsonian Trop Res Inst, Panama City, Panama. [Merot, Claire; Joron, Mathieu] Museum Natl Hist Nat, CNRS, UMR 7205, CP50, Paris, France. [Figueiredo-Ready, Wilsea] Fed Univ Para, Inst Estudos Costeiros, Braganca, Brazil. RP Pardo-Diaz, C (reprint author), Univ Cambridge, Dept Zool, Cambridge, England. EM cp419@cam.ac.uk RI Joron, Mathieu/C-9178-2009; Jiggins, Chris/B-9960-2008; Salazar, camilo/A-1647-2010; Pardo-Diaz, Carolina/C-7936-2016 OI Joron, Mathieu/0000-0003-1043-4147; Jiggins, Chris/0000-0002-7809-062X; Salazar, camilo/0000-0001-9217-6588; Pardo-Diaz, Carolina/0000-0002-7259-1183 FU Leverhulme Trust; BBSRC; Smithsonian Tropical Research Institute (STRI); NSF [DBI-0923119, IOS 1052541] FX CP-D and CDJ were funded by a Leverhulme Trust Research Leadership Grant and by the BBSRC; CS by the Smithsonian Tropical Research Institute (STRI); and WOM by STRI and NSF grants, DBI-0923119, and IOS 1052541. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 57 TC 87 Z9 87 U1 5 U2 82 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA SN 1553-7404 J9 PLOS GENET JI PLoS Genet. PD JUN PY 2012 VL 8 IS 6 AR e1002752 DI 10.1371/journal.pgen.1002752 PG 13 WC Genetics & Heredity SC Genetics & Heredity GA 968EW UT WOS:000305961000019 PM 22737081 ER PT J AU Reasenberg, RD AF Reasenberg, Robert D. TI Aligning a reflection cavity by Anderson's method SO APPLIED OPTICS LA English DT Article ID OPTICAL-RESONATOR; ALIGNMENT; STABILIZATION AB The sounding rocket principle of equivalence measurement uses a set of four laser gauges operating in Fabry-Perot cavities to determine the relative acceleration of two test masses that are chemically different. One end of each cavity is a flat mirror on a test mass. Because the test masses are unconstrained and thus expected to rotate slightly during measurement, and because the distance measurements are made at the sub-picometer level, it is essential to have real-time alignment of the beam entering the cavity. However, the cavity must be used in reflection and space is limited. We show that Anderson's alignment method can be used in reflection, but that it requires that the Fabry-Perot cavity have mirrors with significantly unequal reflectivities. C1 Harvard Smithsonian Ctr Astrophys, Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. RP Reasenberg, RD (reprint author), Harvard Smithsonian Ctr Astrophys, Smithsonian Astrophys Observ, 60 Garden St, Cambridge, MA 02138 USA. EM reasenberg@cfa.harvard.edu FU Smithsonian Institution; NASA Astrophysics Division [NNX08AO04G] FX This work was supported by the Smithsonian Institution. SR-POEM has been supported by the NASA Astrophysics Division through grant NNX08AO04G. I thank J.D. Phillips for his thoughtful comments on the manuscript. NR 8 TC 1 Z9 1 U1 4 U2 5 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 1559-128X EI 2155-3165 J9 APPL OPTICS JI Appl. Optics PD JUN 1 PY 2012 VL 51 IS 16 BP 3132 EP 3136 DI 10.1364/AO.51.003132 PG 5 WC Optics SC Optics GA 955JT UT WOS:000305015300005 PM 22695543 ER PT J AU Mathis, WN Freidberg, A AF Mathis, Wayne N. Freidberg, Amnon TI Periscelis stuckenbergi sp n., the first record of the genus from the Afrotropical Region (Diptera: Periscelididae: Periscelidinae) SO AFRICAN INVERTEBRATES LA English DT Article DE Diptera; Periscelididae; Periscelidinae; Periscelis; Afrotropical; Ethiopia; new species ID AULACIGASTRIDAE AB A new species of the genus Periscelis Loew (P. stuckenbergi, Diptera: Periscelididae: Periscelidinae), the first from the Afrotropical Region, is described. Brief diagnoses of the family, subfamily, genus, subgenus and species are provided to facilitate identification of members of this uncommon family. A key to the sub-families of the family and subgenera of Periscelis and habitus photographs and detailed illustrations of structures of the male terminalia are also included. C1 [Mathis, Wayne N.] Smithsonian Inst, Dept Entomol, Washington, DC 20013 USA. [Freidberg, Amnon] Tel Aviv Univ, George S Wise Fac Life Sci, Dept Zool, IL-69978 Tel Aviv, Israel. RP Mathis, WN (reprint author), Smithsonian Inst, Dept Entomol, POB 37012,MRC 169, Washington, DC 20013 USA. EM mathisw@si.edu; afdipter@post.tau.ac.il NR 25 TC 0 Z9 0 U1 0 U2 0 PU COUNCIL NATAL MUSEUM PI PIETERMARITZBURG PA PRIVATE BAG 9070, PIETERMARITZBURG, KWAZULU-NATAL 00000, SOUTH AFRICA SN 1681-5556 J9 AFR INVERTEBR JI Afr. Invertebr. PD JUN PY 2012 VL 53 IS 1 BP 231 EP 238 PG 8 WC Entomology; Paleontology; Zoology SC Entomology; Paleontology; Zoology GA 961IE UT WOS:000305457100016 ER PT J AU Woodley, NE AF Woodley, Norman E. TI Brianmyia stuckenbergi, a new genus and species of Prosopochrysini from South Africa (Diptera: Stratiomyidae) SO AFRICAN INVERTEBRATES LA English DT Article DE Stratiomyidae; Brianmyia; soldier flies; Afrotropical; South Africa; Drakensberg; new genus; new species AB A new genus and species of Stratiomyidae, Brianmyia stuckenbergi gen. et sp. n., are described from the Drakensberg, KwaZulu-Natal, South Africa. The new genus is placed in the tribe Prosopochrysini of the subfamily Stratiomyinae and is the first genus and species of this tribe known from southern Africa. C1 ARS, Systemat Entomol Lab, PSI, USDA,Smithsonian Inst NHB 168, Washington, DC 20013 USA. RP Woodley, NE (reprint author), ARS, Systemat Entomol Lab, PSI, USDA,Smithsonian Inst NHB 168, POB 37012, Washington, DC 20013 USA. EM norman.woodley@ars.usda.gov RI Woodley, Norman/M-6160-2014 NR 7 TC 1 Z9 1 U1 0 U2 0 PU COUNCIL NATAL MUSEUM PI PIETERMARITZBURG PA PRIVATE BAG 9070, PIETERMARITZBURG, KWAZULU-NATAL 00000, SOUTH AFRICA SN 1681-5556 J9 AFR INVERTEBR JI Afr. Invertebr. PD JUN PY 2012 VL 53 IS 1 BP 369 EP 374 PG 6 WC Entomology; Paleontology; Zoology SC Entomology; Paleontology; Zoology GA 961IE UT WOS:000305457100021 ER PT J AU White, WH Erwin, TL Viator, BJ AF White, W. H. Erwin, T. L. Viator, B. J. TI LEPTOTRACHELUS DORSALIS (COLEOPTERA: CARABIDAE): A CANDIDATE BIOLOGICAL CONTROL AGENT OF THE SUGARCANE BORER IN LOUISIANA SO FLORIDA ENTOMOLOGIST LA English DT Article DE Diatraea saccharalis; fire ants; habitat manipulation; augmentative release; predators ID LEPIDOPTERA; PYRALIDAE; SUSCEPTIBILITY; TEBUFENOZIDE; CRAMBIDAE; PREDATORS; FIELDS AB Following registration and the wide-spread use of insect growth regulators (e.g. tebufenozide and novaluron) for control of sugarcane borer, Diatraea saccharalis (F.) (Lepidoptera: Crambidae), in Louisiana, larvae of the ground beetle, Leptotrachelus dorsalis (F.) (Coleoptera: Carabidae, have become more abundant in sugarcane fields. In a survey of the 18 parishes growing sugarcane in Louisiana, L. dorsalis was found in 8 (44%) of those parishes. The highest number of beetles occurred in a field where 10% of the stalks sampled were harboring larvae. Laboratory studies revealed a developmental period of 37 d from egg deposition to adult emergence. Three larval instars were identified with the first 2 lasting 5 d, and the third instar requiring 17 d. In a voracity study, larvae were found to consume on average 798 first instar sugarcane borer larvae per ground beetle larva. Seventy-five percent of those sugarcane borer larvae were consumed by third instar beetle larvae. Field surveys suggest that adults migrate into sugarcane fields when above-ground internodes form on the sugarcane stalk (June) and increase in numbers thereafter. All 3 instars of the beetle can be found in sugarcane fields during the critical period of Jun to Sep when sugarcane is subject to economic injury by sugarcane borer. If L. dorsalis are abundant in fields during establishment of second generation sugarcane borer, our data suggests they are capable of holding the average season-long damage at or below 10% bored internodes. This level of damage is the recognized economic injury level for sugarcane borer in Louisiana. Our study indicates that L. dorsalis is a good candidate for continued research on augmentative releases as a strategy to increase beetle numbers in sugarcane fields early in the growing season and thus enhance their efficacy as predators of sugarcane borer larvae. C1 [White, W. H.] ARS, USDA, Sugarcane Res Unit, Houma, LA 70360 USA. [Erwin, T. L.] Smithsonian Inst, Natl Museum Nat Hist, Dept Entomol, Hyper Divers Grp, Washington, DC 20013 USA. [Viator, B. J.] Calvin Viator PhD & Associates LLC, Labadieville, LA 70372 USA. RP White, WH (reprint author), ARS, USDA, Sugarcane Res Unit, 5883 USDA Rd, Houma, LA 70360 USA. FU American Sugar Cane League of the U.S.A., Inc. FX The authors express gratitude to Randy Richard and Elta Duet for valuable assistance in the laboratory and field. Financial assistance from the American Sugar Cane League of the U.S.A., Inc. is gratefully acknowledged. Mention of trade names or commercial products in this article is solely for the purpose of providing specific information and does not imply recommendation or endorsement by the U.S. Department of Agriculture. NR 21 TC 2 Z9 2 U1 0 U2 2 PU FLORIDA ENTOMOLOGICAL SOC PI LUTZ PA 16125 E LAKE BURRELL DR, LUTZ, FL 33548 USA SN 0015-4040 J9 FLA ENTOMOL JI Fla. Entomol. PD JUN PY 2012 VL 95 IS 2 BP 261 EP 267 PG 7 WC Entomology SC Entomology GA 960EL UT WOS:000305370700003 ER PT J AU Page, RA Schnelle, T Kalko, EKV Bunge, T Bernal, XE AF Page, Rachel A. Schnelle, Tanja Kalko, Elisabeth K. V. Bunge, Thomas Bernal, Ximena E. TI Sequential assessment of prey through the use of multiple sensory cues by an eavesdropping bat SO NATURWISSENSCHAFTEN LA English DT Article DE Multimodal cues; Foraging strategies; Prey palatability; Prey size; Predator flexibility; Trachops cirrhosus ID FROG-EATING BATS; TRACHOPS-CIRRHOSUS; MOTH CLICKS; CALLS; ECHOLOCATION; APOSEMATISM; EVOLUTION; BEHAVIOR; GLANDS AB Predators are often confronted with a broad diversity of potential prey. They rely on cues associated with prey quality and palatability to optimize their hunting success and to avoid consuming toxic prey. Here, we investigate a predator's ability to assess prey cues during capture, handling, and consumption when confronted with conflicting information about prey quality. We used advertisement calls of a preferred prey item (the tA(0)ngara frog) to attract fringe-lipped bats, Trachops cirrhosus, then offered palatable, poisonous, and chemically manipulated anurans as prey. Advertisement calls elicited an attack response, but as bats approached, they used additional sensory cues in a sequential manner to update their information about prey size and palatability. While both palatable and poisonous small anurans were readily captured, large poisonous toads were approached but not contacted suggesting the use of echolocation for assessment of prey size at close range. Once prey was captured, bats used chemical cues to make final, post-capture decisions about whether to consume the prey. Bats dropped small, poisonous toads as well as palatable frogs coated in toad toxins either immediately or shortly after capture. Our study suggests that echolocation and chemical cues obtained at close range supplement information obtained from acoustic cues at long range. Updating information about prey quality minimizes the occurrence of costly errors and may be advantageous in tracking temporal and spatial fluctuations of prey and exploiting novel food sources. These findings emphasize the sequential, complex nature of prey assessment that may allow exploratory and flexible hunting behaviors. C1 [Page, Rachel A.; Kalko, Elisabeth K. V.; Bernal, Ximena E.] Smithsonian Trop Res Inst, Panama City, Panama. [Schnelle, Tanja; Kalko, Elisabeth K. V.; Bunge, Thomas] Univ Ulm, Inst Expt Ecol, D-89069 Ulm, Germany. [Bernal, Ximena E.] Texas Tech Univ, Lubbock, TX 79409 USA. RP Page, RA (reprint author), Smithsonian Trop Res Inst, Apartado 0843-03092, Panama City, Panama. EM PageR@si.edu NR 25 TC 9 Z9 9 U1 8 U2 39 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0028-1042 J9 NATURWISSENSCHAFTEN JI Naturwissenschaften PD JUN PY 2012 VL 99 IS 6 BP 505 EP 509 DI 10.1007/s00114-012-0920-6 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 961OV UT WOS:000305476200009 PM 22592417 ER PT J AU Guo, CQ Edwards, D Wu, PC Duckett, JG Hueber, FM Li, CS AF Guo, Cai-Qing Edwards, Dianne Wu, Peng-Cheng Duckett, Jeffrey G. Hueber, Francis M. Li, Cheng-Sen TI Riccardiothallus devonicus gen. et sp nov., the earliest simple thalloid liverwort from the Lower Devonian of Yunnan, China SO REVIEW OF PALAEOBOTANY AND PALYNOLOGY LA English DT Article DE Aneuraceae; Riccardiothallus devonicus; fossil liverwort; Lower Devonian; Yunnan; China ID EARLY LAND PLANTS; POSONGCHONG FORMATION; SOUTHEASTERN YUNNAN; FERN GAMETOPHYTES; HOPE BAY; PROVINCE; EVOLUTION; HEPATICAE; MARCHANTIOPHYTA; ANTARCTICA AB This paper describes a fossil liverwort in the Posongchong Formation, Lower Devonian (Pragian), Yunnan, China preserved as a partially permineralized compression in gray arenaceous mudstone. The plant comprises a regularly-bifurcating flat ecostate multilayered thallus with entire margins. Following comparisons of this fossil with gametophytes of extant and fossil liverworts, a new genus Riccardiothallus was established in the family Aneuraceae (Jungermanniopsida). The fossil, which appears to be closely similar to several members of the extant genus Riccardia, is the earliest unequivocal megafossil evidence of a liverwort. Considering the sedimentary environment of Riccardiothallus devonicus and the habitats of many extant Riccardia species, we conclude that Riccardiothallus devonicus probably lived in a warm and humid riverine environment. The age (Pragian, 407-411 Ma) of Riccardiothallus devonicus suggests that the differentiation of Jungermanniopsida and Metzgeriidae was in the Early Devonian, significantly earlier than the assumptions derived from analyses of chloroplast DNA sequences of modern liverworts and current total evidence phylogenies (Late Devonian, 359-385 Ma: Late Carboniferous, 299-307 Ma). (C) 2012 Elsevier B.V. All rights reserved. C1 [Guo, Cai-Qing; Wu, Peng-Cheng; Li, Cheng-Sen] Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China. [Guo, Cai-Qing] Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China. [Edwards, Dianne] Cardiff Univ, Sch Earth & Ocean Sci, Cardiff CF10 3AT, S Glam, Wales. [Duckett, Jeffrey G.] Nat Hist Museum, Dept Bot, London SW7 5BD, England. [Hueber, Francis M.] Smithsonian Inst, Natl Museum Nat Hist, Washington, DC 20013 USA. RP Li, CS (reprint author), Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China. EM lics@ibcas.ac.cn NR 64 TC 13 Z9 16 U1 1 U2 12 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0034-6667 J9 REV PALAEOBOT PALYNO JI Rev. Palaeobot. Palynology PD JUN PY 2012 VL 176 BP 35 EP 40 DI 10.1016/j.revpalbo.2012.03.012 PG 6 WC Plant Sciences; Paleontology SC Plant Sciences; Paleontology GA 961VB UT WOS:000305496500003 ER PT J AU Harris, EM Horn, JW Wagner, WL AF Harris, Elizabeth M. Horn, James W. Wagner, Warren L. TI Floral development of the divergent endemic Hawaiian genus Schiedea (Caryophyllaceae), with special emphasis on the floral nectaries SO TAXON LA English DT Article DE Caryophyllaceae; floral development; floral dimorphism; floral nectary; Hawaii; Schiedea ID ALSINIDENDRON CARYOPHYLLACEAE; INFLORESCENCE TRAITS; GENETIC CORRELATIONS; POLLINATION BIOLOGY; WIND POLLINATION; BREEDING SYSTEMS; SENSU-LATO; EVOLUTION; ALSINOIDEAE; HERITABILITIES AB The endemic Hawaiian genus Schiedea has among the most architecturally complex flowers of any genus of Caryophyllaceae. To understand the developmental basis of the unusual floral features that characterize Schiedea, we studied the floral organogenesis of 6 of the 34 species of the genus using SEM, supplementing these observations with a focused investigation of nectary histology. The early ontogeny of Schiedea flowers is like that of many other Caryophyllaceae in that: (1) the five sepals are initiated in a 2/5 spiral, with the first, antesepalous whorl of stamens initiated in an imperfectly contrarotating sequence relative to the sepals; (2) the alternisepalous stamen whorl initiates slightly external to and at a lower level on the floral apex than the antesepalous whorl; and (3) petal primordia, if initiated (rare), arise on a primordium common with an alternisepalous stamen. Hence, most floral features that distinguish the genus, such as the (often) reflexed sepals and elongate stamen filaments, arise late in floral ontogeny. The only unique trait to Schiedea flowers are the elongate, tubular nectary extensions. They are antesepalous and arise from the abaxial surface of a ring-shaped proliferation of tissue that surrounds the bases of the developing stamens. The shape of each nectary in early ontogeny is highly similar to the mature "swallow's nest" nectaries present in many genera of a major crown clade of Caryophyllaceae (Pleurcaryophyllaceae, containing Schiedea), suggesting that the development of the needle- to scale-like nectary extensions of Schiedea might represent terminal additions onto a "swallow's nest" nectary ontogenetic program. C1 [Horn, James W.; Wagner, Warren L.] Smithsonian Inst, Natl Museum Nat Hist, Dept Bot, Washington, DC 20013 USA. [Harris, Elizabeth M.] Univ Cent Florida, Dept Biol, Orlando, FL 32816 USA. RP Wagner, WL (reprint author), Smithsonian Inst, Natl Museum Nat Hist, Dept Bot, MRC 166,POB 37012, Washington, DC 20013 USA. EM wagnerw@si.edu FU National Science Foundation [BSR 88-17616, BSR 89-18366, DEB 92-07724]; Smithsonian Institution FX This research was supported by grants from the National Science Foundation (BSR 88-17616, BSR 89-18366, DEB 92-07724) to Stephen Weller and Ann Sakai, and a grant from the Scholarly Studies Program of the Smithsonian Institution (Wagner, Weller, Sakai, D. Soltis, and P. Soltis). We thank Stephen Weller and Ann Sakai for providing cultivated material of the species examined in this study, and for their conceptual input on the project at its initiation. We thank Richard Crang for facilitating the use of the SEM at the EM facility at the University of Illinois. Alice Tangerini assisted in designing the photographic plates, and produced the final digital versions. Denise Mix provided lab assistance. Ann Sakai, Louis Ronse De Craene, and an anonymous reviewer contributed helpful comments on the manuscript. NR 45 TC 3 Z9 3 U1 1 U2 6 PU INT ASSOC PLANT TAXONOMY-IAPT PI BRATISLAVA PA C/O INST BOTANY, SLOVAK ACAD SCIENCES DUBRAVSKA CESTA 9, SK-845 23 BRATISLAVA, SLOVAKIA SN 0040-0262 J9 TAXON JI Taxon PD JUN PY 2012 VL 61 IS 3 BP 576 EP 591 PG 16 WC Plant Sciences; Evolutionary Biology SC Plant Sciences; Evolutionary Biology GA 961BO UT WOS:000305439100007 ER PT J AU Goodman, AA AF Goodman, A. A. TI Principles of high-dimensional data visualization in astronomy SO ASTRONOMISCHE NACHRICHTEN LA English DT Article DE cosmology: large-scale structure; ISM: clouds; methods: data analysis; techniques: image processing; techniques: radial velocities ID 3D VISUALIZATION AB Astronomical researchers often think of analysis and visualization as separate tasks. In the case of high-dimensional data sets, though, interactive exploratory data visualization can give far more insight than an approach where data processing and statistical analysis are followed, rather than accompanied, by visualization. This paper attempts to charts a course toward linked view systems, where multiple views of high-dimensional data sets update live as a researcher selects, highlights, or otherwise manipulates, one of several open views. For example, imagine a researcher looking at a 3D volume visualization of simulated or observed data, and simultaneously viewing statistical displays of the data set's properties (such as an x -y plot of temperature vs. velocity, or a histogram of vorticities). Then, imagine that when the researcher selects an interesting group of points in any one of these displays, that the same points become a highlighted subset in all other open displays. Selections can be graphical or algorithmic, and they can be combined, and saved. For tabular (ASCII) data, this kind of analysis has long been possible, even though it has been under-used in astronomy. The bigger issue for astronomy and other high-dimensional fields, though, is that no extant system allows for full integration of images and data cubes within a linked-view environment. The paper concludes its history and analysis of the present situation with suggestions that look toward cooperatively-developed open-source modular software as a way to create an evolving, flexible, high-dimensional, linked-view visualization environment useful in astro-physical research ((c) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) C1 Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Goodman, AA (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM agoodman@cfa.harvard.edu RI Goodman, Alyssa/A-6007-2010 OI Goodman, Alyssa/0000-0003-1312-0477 FU Microsoft Research; National Science Foundation; NASA FX The author thanks her collaborators Michelle Borkin and Christopher Beaumont for their significant contributions to this work, and Bernice Rogowitz and Hanspeter Pfister for excellent suggestions on improving it. Microsoft Research, the National Science Foundation, and NASA all fund the author's work on astronomical data visualization. NR 18 TC 5 Z9 7 U1 1 U2 14 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY SN 0004-6337 J9 ASTRON NACHR JI Astro. Nachr. PD JUN PY 2012 VL 333 IS 5-6 SI SI BP 505 EP 514 DI 10.1002/asna.201211705 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 959SA UT WOS:000305331900016 ER PT J AU Brammer, GB van Dokkum, PG Franx, M Fumagalli, M Patel, S Rix, HW Skelton, RE Kriek, M Nelson, E Schmidt, KB Bezanson, R da Cunha, E Erb, DK Fan, XH Schreiber, NF Illingworth, GD Labbe, I Leja, J Lundgren, B Magee, D Marchesini, D McCarthy, P Momcheva, I Muzzin, A Quadri, R Steidel, CC Tal, T Wake, D Whitaker, KE Williams, A AF Brammer, Gabriel B. van Dokkum, Pieter G. Franx, Marijn Fumagalli, Mattia Patel, Shannon Rix, Hans-Walter Skelton, Rosalind E. Kriek, Mariska Nelson, Erica Schmidt, Kasper B. Bezanson, Rachel da Cunha, Elisabete Erb, Dawn K. Fan, Xiaohui Schreiber, Natascha Foerster Illingworth, Garth D. Labbe, Ivo Leja, Joel Lundgren, Britt Magee, Dan Marchesini, Danilo McCarthy, Patrick Momcheva, Ivelina Muzzin, Adam Quadri, Ryan Steidel, Charles C. Tal, Tomer Wake, David Whitaker, Katherine E. Williams, Anna TI 3D-HST: A WIDE-FIELD GRISM SPECTROSCOPIC SURVEY WITH THE HUBBLE SPACE TELESCOPE SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE galaxies: high-redshift; surveys ID ULTRA-DEEP-FIELD; EMISSION-LINE GALAXIES; STAR-FORMATION HISTORY; LYMAN-BREAK GALAXIES; EXTRAGALACTIC LEGACY SURVEY; ACTIVE GALACTIC NUCLEI; MEDIUM-BAND SURVEY; GREATER-THAN 1; GOODS-N FIELD; SIMILAR-TO 2 AB We present 3D-HST, a near-infrared spectroscopic Treasury program with the Hubble Space Telescope for studying the physical processes that shape galaxies in the distant universe. 3D-HST provides rest-frame optical spectra for a sample of similar to 7000 galaxies at 1 < z < 3.5, the epoch when similar to 60% of all star formation took place, the number density of quasars peaked, the first galaxies stopped forming stars, and the structural regularity that we see in galaxies today must have emerged. 3D-HST will cover three quarters (625 arcmin(2)) of the CANDELS Treasury survey area with two orbits of primary WFC3/G141 grism coverage and two to four orbits with the ACS/G800L grism in parallel. In the IR, these exposure times yield a continuum signal-to-noise ratio of similar to 5 per resolution element at H-140 similar to 23.1 and a 5 sigma emission-line sensitivity of similar to 5 x 10(-17) erg s(-1) cm(-2) for typical objects, improving by a factor of similar to 2 for compact sources in images with low sky background levels. The WFC3/G141 spectra provide continuous wavelength coverage from 1.1 to 1.6 mu m at a spatial resolution of similar to 0.'' 13, which, combined with their depth, makes them a unique resource for studying galaxy evolution. We present an overview of the preliminary reduction and analysis of the grism observations, including emission-line and redshift measurements from combined fits to the extracted grism spectra and photometry from ancillary multi-wavelength catalogs. The present analysis yields redshift estimates with a precision of sigma(z) = 0.0034(1 + z), or sigma(nu) approximate to 1000 km s(-1). We illustrate how the generalized nature of the survey yields near-infrared spectra of remarkable quality for many different types of objects, including a quasar at z = 4.7, quiescent galaxies at z similar to 2, and the most distant T-type brown dwarf star known. The combination of the CANDELS and 3D-HST surveys will provide the definitive imaging and spectroscopic data set for studies of the 1 < z < 3.5 universe until the launch of the James Webb Space Telescope. C1 [Brammer, Gabriel B.] European So Observ, Santiago, Chile. [van Dokkum, Pieter G.; Skelton, Rosalind E.; Nelson, Erica; Bezanson, Rachel; Leja, Joel; Lundgren, Britt; Momcheva, Ivelina; Tal, Tomer; Wake, David; Whitaker, Katherine E.] Yale Univ, Dept Astron, New Haven, CT 06520 USA. [Franx, Marijn; Fumagalli, Mattia; Patel, Shannon; Labbe, Ivo; Muzzin, Adam] Leiden Univ, Leiden Observ, Leiden, Netherlands. [Rix, Hans-Walter; Schmidt, Kasper B.; da Cunha, Elisabete] Max Planck Inst Astron, D-69117 Heidelberg, Germany. [Kriek, Mariska] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Erb, Dawn K.] Univ Wisconsin, Dept Phys, Milwaukee, WI 53201 USA. [Fan, Xiaohui] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. [Schreiber, Natascha Foerster] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. [Illingworth, Garth D.; Magee, Dan] Univ Calif Santa Cruz, Dept Astron, Santa Cruz, CA 95064 USA. [Marchesini, Danilo] Tufts Univ, Dept Phys & Astron, Medford, MA 02155 USA. [McCarthy, Patrick; Momcheva, Ivelina; Quadri, Ryan] Carnegie Observ, Pasadena, CA 91101 USA. [Steidel, Charles C.] CALTECH, Dept Astron, Pasadena, CA 91125 USA. [Williams, Anna] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA. RP Brammer, GB (reprint author), European So Observ, Alonso de Cordova 3107,Casilla 19001, Santiago, Chile. EM gbrammer@eso.org RI Skelton, Rosalind/S-1845-2016; OI Skelton, Rosalind/0000-0001-7393-3336; Leja, Joel/0000-0001-6755-1315; da Cunha, Elisabete/0000-0001-9759-4797 FU Space Telescope Science Institute [HST-GO-12177]; European Commission; European Research Council under the European Community [227749] FX Prism Spectral Libraries, maintained by Adam Burgasser at http://pono.ucsd.edu/adam/browndwarfs/spexprism. 3D-HST is supported in part by grant HST-GO-12177 awarded by the Space Telescope Science Institute. Additional funding for this research was provided by the Marie Curie Actions of the European Commission (FP7-COFUND) and the European Research Council under the European Community's Seventh Framework Programme (FP7/2007-2013)/ERC grant agreement 227749. NR 96 TC 173 Z9 173 U1 1 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0067-0049 EI 1538-4365 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD JUN PY 2012 VL 200 IS 2 AR 13 DI 10.1088/0067-0049/200/2/13 PG 19 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 956KH UT WOS:000305088000003 ER PT J AU Dalcanton, JJ Williams, BF Lang, D Lauer, TR Kalirai, JS Seth, AC Dolphin, A Rosenfield, P Weisz, DR Bell, EF Bianchi, LC Boyer, ML Caldwell, N Dong, H Dorman, CE Gilbert, KM Girardi, L Gogarten, SM Gordon, KD Guhathakurta, P Hodge, PW Holtzman, JA Johnson, LC Larsen, SS Lewis, A Melbourne, JL Olsen, KAG Rix, HW Rosema, K Saha, A Sarajedini, A Skillman, ED Stanek, KZ AF Dalcanton, Julianne J. Williams, Benjamin F. Lang, Dustin Lauer, Tod R. Kalirai, Jason S. Seth, Anil C. Dolphin, Andrew Rosenfield, Philip Weisz, Daniel R. Bell, Eric F. Bianchi, Luciana C. Boyer, Martha L. Caldwell, Nelson Dong, Hui Dorman, Claire E. Gilbert, Karoline M. Girardi, Leo Gogarten, Stephanie M. Gordon, Karl D. Guhathakurta, Puragra Hodge, Paul W. Holtzman, Jon A. Johnson, L. Clifton Larsen, Soren S. Lewis, Alexia Melbourne, Jason L. Olsen, Knut A. G. Rix, Hans-Walter Rosema, Keith Saha, Abhijit Sarajedini, Ata Skillman, Evan D. Stanek, Krzysztof Z. TI THE PANCHROMATIC HUBBLE ANDROMEDA TREASURY SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE galaxies: individual (M31); galaxies: stellar content; stars: general; stars: imaging ID STAR-FORMATION HISTORY; BRIGHT YOUNG CLUSTERS; RED GIANT STARS; H-II REGIONS; PERIOD-LUMINOSITY RELATION; SPACE-TELESCOPE SURVEY; LOCAL GROUP GALAXIES; SUPER-NOVA REMNANTS; STELLAR CONTENT; OUTER DISK AB The Panchromatic Hubble Andromeda Treasury is an ongoing Hubble Space Telescope Multi-Cycle Treasury program to image similar to 1/3 of M31's star-forming disk in six filters, spanning from the ultraviolet (UV) to the near-infrared (NIR). We use the Wide Field Camera 3 (WFC3) and Advanced Camera for Surveys (ACS) to resolve the galaxy into millions of individual stars with projected radii from 0 to 20 kpc. The full survey will cover a contiguous 0.5 deg(2)area in 828 orbits. Imaging is being obtained in the F275W and F336W filters on the WFC3/UVIS camera, F475W and F814W on ACS/WFC, and F110W and F160W on WFC3/IR. The resulting wavelength coverage gives excellent constraints on stellar temperature, bolometric luminosity, and extinction for most spectral types. The data produce photometry with a signal-to-noise ratio of 4 at m(F275W) = 25.1, m(F336W) = 24.9, m(F475W) = 27.9, m(F814W) = 27.1, m(F110W) = 25.5, and m(F160W) = 24.6 for single pointings in the uncrowded outer disk; in the inner disk, however, the optical and NIR data are crowding limited, and the deepest reliable magnitudes are up to 5 mag brighter. Observations are carried out in two orbits per pointing, split between WFC3/UVIS and WFC3/IR cameras in primary mode, with ACS/WFC run in parallel. All pointings are dithered to produce Nyquist-sampled images in F475W, F814W, and F160W. We describe the observing strategy, photometry, astrometry, and data products available for the survey, along with extensive testing of photometric stability, crowding errors, spatially dependent photometric biases, and telescope pointing control. We also report on initial fits to the structure of M31's disk, derived from the density of red giant branch stars, in a way that is independent of assumed mass-to-light ratios and is robust to variations in dust extinction. These fits also show that the 10 kpc ring is not just a region of enhanced recent star formation, but is instead a dynamical structure containing a significant overdensity of stars with ages > 1Gyr. C1 [Dalcanton, Julianne J.; Williams, Benjamin F.; Rosenfield, Philip; Weisz, Daniel R.; Gilbert, Karoline M.; Gogarten, Stephanie M.; Hodge, Paul W.; Johnson, L. Clifton; Lewis, Alexia] Univ Washington, Dept Astron, Seattle, WA 98195 USA. [Lang, Dustin] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA. [Lauer, Tod R.; Dong, Hui; Olsen, Knut A. G.; Saha, Abhijit] Natl Opt Astron Observ, Tucson, AZ 85719 USA. [Kalirai, Jason S.; Boyer, Martha L.; Gordon, Karl D.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Seth, Anil C.] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA. [Dolphin, Andrew] Raytheon Co, Tucson, AZ 85756 USA. [Bell, Eric F.] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA. [Bianchi, Luciana C.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. [Caldwell, Nelson] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Dorman, Claire E.; Guhathakurta, Puragra] Univ Calif Santa Cruz, Univ Calif Observ, Lick Observ, Santa Cruz, CA 95064 USA. [Girardi, Leo] Osservatorio Astron Padova INAF, I-35122 Padua, Italy. [Holtzman, Jon A.] New Mexico State Univ, Dept Astron, Las Cruces, NM 88003 USA. [Larsen, Soren S.] Radboud Univ Nijmegen, Dept Astrophys, IMAPP, NL-6500 GL Nijmegen, Netherlands. [Melbourne, Jason L.] CALTECH, Caltech Opt Observ, Div Phys Math & Astron, Pasadena, CA 91125 USA. [Rix, Hans-Walter] Max Planck Inst Astron, D-69117 Heidelberg, Germany. [Rosema, Keith] Random Walk Grp, Seattle, WA 98105 USA. [Sarajedini, Ata] Univ Florida, Dept Astron, Gainesville, FL 32611 USA. [Skillman, Evan D.] Univ Minnesota, Minnesota Inst Astrophys, Minneapolis, MN 55455 USA. [Stanek, Krzysztof Z.] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA. RP Dalcanton, JJ (reprint author), Univ Washington, Dept Astron, Box 351580, Seattle, WA 98195 USA. OI Gogarten, Stephanie/0000-0002-7231-9745; Rosenfield, Philip/0000-0001-9306-6049; Johnson, Lent/0000-0001-6421-0953; Bell, Eric/0000-0002-5564-9873 FU Space Telescope Science Institute [GO-12055]; [ASI-INAF I/009/10/0] FX The authors are very happy to acknowledge discussions with Jay Anderson, Tom Brown, Suzanne Hawley, and Alesandro Bressan. We are grateful to Stefano Casertano for sharing the code to produce the exposure time maps in Figure 5, Alesandro Bressan for providing the tracks plotted in Figure 24, Jean-Charles Cuillandre for allowing us to use his CFHT imaging to tie our data to a global astrometric frame, to Pauline Barmby for providing us the Spitzer IRAC images, and the anonymous referee for an extremely knowledgeable and prompt report. The project has received superb support from personnel at the Space Telescope Science Institute, including Alison Vick, Ken Sembach, Neill Reid, and the ACS and WFC3 instrument teams. Zolt Levay is particularly thanked for the beautiful visualizations found in Figure 6, which far surpassed anything we were able to generate on our own. Stan Vlcek, Sarah Garner, and Pat Taylor at UW have been instrumental in helping with logistics for the project. This work was supported by the Space Telescope Science Institute through GO-12055. L.G. acknowledges support from contract ASI-INAF I/009/10/0. NR 128 TC 102 Z9 102 U1 1 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD JUN PY 2012 VL 200 IS 2 AR 18 DI 10.1088/0067-0049/200/2/18 PG 37 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 956KH UT WOS:000305088000008 ER PT J AU Hicken, M Challis, P Kirshner, RP Rest, A Cramer, CE Wood-Vasey, WM Bakos, G Berlind, P Brown, WR Caldwell, N Calkins, M Currie, T de Kleer, K Esquerdo, G Everett, M Falco, E Fernandez, J Friedman, AS Groner, T Hartman, J Holman, MJ Hutchins, R Keys, S Kipping, D Latham, D Marion, GH Narayan, G Pahre, M Pal, A Peters, W Perumpilly, G Ripman, B Sipocz, B Szentgyorgyi, A Tang, SM Torres, MAP Vaz, A Wolk, S Zezas, A AF Hicken, Malcolm Challis, Peter Kirshner, Robert P. Rest, Armin Cramer, Claire E. Wood-Vasey, W. Michael Bakos, Gaspar Berlind, Perry Brown, Warren R. Caldwell, Nelson Calkins, Mike Currie, Thayne de Kleer, Kathy Esquerdo, Gil Everett, Mark Falco, Emilio Fernandez, Jose Friedman, Andrew S. Groner, Ted Hartman, Joel Holman, Matthew J. Hutchins, Robert Keys, Sonia Kipping, David Latham, Dave Marion, George H. Narayan, Gautham Pahre, Michael Pal, Andras Peters, Wayne Perumpilly, Gopakumar Ripman, Ben Sipocz, Brigitta Szentgyorgyi, Andrew Tang, Sumin Torres, Manuel A. P. Vaz, Amali Wolk, Scott Zezas, Andreas TI CfA4: LIGHT CURVES FOR 94 TYPE Ia SUPERNOVAE SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE supernovae: general ID HUBBLE-SPACE-TELESCOPE; DARK-ENERGY CONSTRAINTS; PHOTOMETRY DATA RELEASE; INFRARED PHOTOMETRY; LUMINOSITY INDICATORS; IMAGE SUBTRACTION; HOST GALAXIES; CONSTANT; MAGNITUDES; UNIVERSE AB We present multi-band optical photometry of 94 spectroscopically confirmed Type Ia supernovae (SNe Ia) in the redshift range 0.0055-0.073, obtained between 2006 and 2011. There are a total of 5522 light-curve points. We show that our natural-system SN photometry has a precision of less than or similar to 0.03 mag in BV r'i', less than or similar to 0.06 mag in u', and less than or similar to 0.07 mag in U for points brighter than 17.5 mag and estimate that it has a systematic uncertainty of 0.014, 0.010, 0.012, 0.014, 0.046, and 0.073 mag in BV r'i'u'U, respectively. Comparisons of our standard-system photometry with published SN Ia light curves and comparison stars reveal mean agreement across samples in the range of similar to 0.00-0.03 mag. We discuss the recent measurements of our telescope-plus-detector throughput by direct monochromatic illumination by Cramer et al. This technique measures the whole optical path through the telescope, auxiliary optics, filters, and detector under the same conditions used to make SN measurements. Extremely well characterized natural-system passbands (both in wavelength and over time) are crucial for the next generation of SN Ia photometry to reach the 0.01 mag accuracy level. The current sample of low-z SNe Ia is now sufficiently large to remove most of the statistical sampling error from the dark-energy error budget. But pursuing the dark-energy systematic errors by determining highly accurate detector passbands, combining optical and near-infrared (NIR) photometry and spectra, using the nearby sample to illuminate the population properties of SNe Ia, and measuring the local departures from the Hubble flow will benefit from larger, carefully measured nearby samples. C1 [Hicken, Malcolm; Challis, Peter; Kirshner, Robert P.; Bakos, Gaspar; Berlind, Perry; Brown, Warren R.; Caldwell, Nelson; Calkins, Mike; Falco, Emilio; Fernandez, Jose; Friedman, Andrew S.; Groner, Ted; Hartman, Joel; Holman, Matthew J.; Hutchins, Robert; Keys, Sonia; Kipping, David; Latham, Dave; Marion, George H.; Narayan, Gautham; Pahre, Michael; Pal, Andras; Peters, Wayne; Ripman, Ben; Sipocz, Brigitta; Szentgyorgyi, Andrew; Tang, Sumin; Torres, Manuel A. P.; Wolk, Scott; Zezas, Andreas] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Rest, Armin] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Cramer, Claire E.] NIST, Gaithersburg, MD 20899 USA. [Wood-Vasey, W. Michael] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA. [Bakos, Gaspar; Hartman, Joel] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08542 USA. [Currie, Thayne] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [de Kleer, Kathy] MIT, Dept Phys, Cambridge, MA 02139 USA. [Esquerdo, Gil; Everett, Mark] Planetary Sci Inst, Tucson, AZ 85719 USA. [Perumpilly, Gopakumar] Univ S Dakota, Dept Phys, Vermillion, SD 57069 USA. [Vaz, Amali] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA. RP Hicken, M (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM mhicken@cfa.harvard.edu RI Friedman, Andrew/I-4691-2013; Zezas, Andreas/C-7543-2011; OI Friedman, Andrew/0000-0003-1334-039X; Zezas, Andreas/0000-0001-8952-676X; Wolk, Scott/0000-0002-0826-9261; Narayan, Gautham/0000-0001-6022-0484; Hartman, Joel/0000-0001-8732-6166 FU NSF [AST0606772, AST0907903] FX We thank the staff at FLWO for their dedicated work in maintaining the 1.2 m telescope and instruments. We also thank M. Stritzinger, W. Li, and M. Ganeshalingam for help in comparing the CfA4 sample with the CSP2 and LOSS samples. Finally, we appreciate discussions with K. Mandel. This work has been supported, in part, by NSF grants AST0606772 and AST0907903 to Harvard University. NR 72 TC 45 Z9 45 U1 1 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD JUN PY 2012 VL 200 IS 2 AR 12 DI 10.1088/0067-0049/200/2/12 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 956KH UT WOS:000305088000002 ER PT J AU Trichas, M Green, PJ Silverman, JD Aldcroft, T Barkhouse, W Cameron, RA Constantin, A Ellison, SL Foltz, C Haggard, D Jannuzi, BT Kim, DW Marshall, HL Mossman, A Perez, LM Romero-Colmenero, E Ruiz, A Smith, MG Smith, PS Torres, G Wik, DR Wilkes, BJ Wolfgang, A AF Trichas, Markos Green, Paul J. Silverman, John D. Aldcroft, Tom Barkhouse, Wayne Cameron, Robert A. Constantin, Anca Ellison, Sara L. Foltz, Craig Haggard, Daryl Jannuzi, Buell T. Kim, Dong-Woo Marshall, Herman L. Mossman, Amy Perez, Laura M. Romero-Colmenero, Encarni Ruiz, Angel Smith, Malcolm G. Smith, Paul S. Torres, Guillermo Wik, Daniel R. Wilkes, Belinda J. Wolfgang, Angie TI THE CHANDRA MULTI-WAVELENGTH PROJECT: OPTICAL SPECTROSCOPY AND THE BROADBAND SPECTRAL ENERGY DISTRIBUTIONS OF X-RAY-SELECTED AGNs SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE galaxies: evolution; galaxies: Seyfert; galaxies: starburst; quasars: general; techniques: spectroscopic; X-rays: galaxies ID ACTIVE GALACTIC NUCLEI; DEEP FIELD-SOUTH; DIGITAL-SKY-SURVEY; ULTRALUMINOUS INFRARED GALAXIES; QUASAR LUMINOSITY FUNCTION; STAR-FORMATION; BLACK-HOLES; HELLAS2XMM SURVEY; REDSHIFT SURVEY; SOURCE CATALOGS AB From optical spectroscopy of X-ray sources observed as part of the Chandra Multi-wavelength Project (ChaMP), we present redshifts and classifications for a total of 1569 Chandra sources from our targeted spectroscopic follow-up using the FLWO/1.5 m, SAAO/1.9 m, WIYN 3.5 m, CTIO/4 m, KPNO/4 m, Magellan/6.5 m, MMT/6.5 m, and Gemini/8 m telescopes, and from archival Sloan Digital Sky Survey (SDSS) spectroscopy. We classify the optical counterparts as 50% broad-line active galactic nuclei (AGNs), 16% emission line galaxies, 14% absorption line galaxies, and 20% stars. We detect QSOs out to z similar to 5.5 and galaxies out to z similar to 3. We have compiled extensive photometry, including X-ray (ChaMP), ultraviolet (GALEX), optical (SDSS and ChaMP-NOAO/MOSAIC follow-up), near-infrared (UKIDSS, Two Micron All Sky Survey, and ChaMP-CTIO/ISPI follow-up), mid-infrared (WISE), and radio (FIRST and NVSS) bands. Together with our spectroscopic information, this enables us to derive detailed spectral energy distributions (SEDs) for our extragalactic sources. We fit a variety of template SEDs to determine bolometric luminosities, and to constrain AGNs and starburst components where both are present. While similar to 58% of X-ray Seyferts (10(42) erg s(-1) < L2-10 keV < 10(44) erg s(-1)) require a starburst event (>5% starburst contribution to bolometric luminosity) to fit observed photometry only 26% of the X-ray QSO (L2-10 keV > 10(44) erg s(-1)) population appear to have some kind of star formation contribution. This is significantly lower than for the Seyferts, especially if we take into account torus contamination at z > 1 where the majority of our X-ray QSOs lie. In addition, we observe a rapid drop of the percentage of starburst contribution as X-ray luminosity increases. This is consistent with the quenching of star formation by powerful QSOs, as predicted by the merger model, or with a time lag between the peak of star formation and QSO activity. We have tested the hypothesis that there should be a strong connection between X-ray obscuration and star formation but we do not find any association between X-ray column density and star formation rate both in the general population or the star-forming X-ray Seyferts. Our large compilation also allows us to report here the identification of 81 X-ray Bright Optically inactive Galaxies, 78 z > 3 X-ray sources, and eight Type-2 QSO candidates. Also, we have identified the highest redshift (z = 5.4135) X-ray-selected QSO with optical spectroscopy. C1 [Trichas, Markos; Green, Paul J.; Aldcroft, Tom; Kim, Dong-Woo; Mossman, Amy; Torres, Guillermo; Wilkes, Belinda J.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Silverman, John D.] Univ Tokyo, Inst Phys & Math Universe IPMU, Kashiwa, Chiba 2778568, Japan. [Barkhouse, Wayne] Univ N Dakota, Dept Phys & Astrophys, Grand Forks, ND 58202 USA. [Cameron, Robert A.] Stanford Univ, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA. [Cameron, Robert A.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA. [Constantin, Anca] James Madison Univ, Dept Phys & Astron, PHCH, Harrisonburg, VA 22807 USA. [Ellison, Sara L.] Univ Victoria, Dept Phys & Astron, Victoria, BC V8P 1A1, Canada. [Foltz, Craig] Natl Sci Fdn, Div Astron Sci, Arlington, VA 22230 USA. [Haggard, Daryl] Northwestern Univ, Ctr Interdisciplinary Explorat & Res Astrophys, Evanston, IL 60208 USA. [Jannuzi, Buell T.] Kitt Peak Natl Observ, NOAO, Tucson, AZ 85726 USA. [Marshall, Herman L.] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA. [Perez, Laura M.] CALTECH, Dept Astron, Pasadena, CA 91125 USA. [Romero-Colmenero, Encarni] S African Astron Observ, ZA-7935 Observatory, South Africa. [Ruiz, Angel] Osservatorio Astron Brera INAF, Milan, Italy. [Smith, Malcolm G.] Cerro Tololo Interamer Observ, La Serena, Chile. [Smith, Paul S.] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. [Wik, Daniel R.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Wolfgang, Angie] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA. RP Trichas, M (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM mtrichas@cfa.harvard.edu RI Ruiz, Angel/B-4914-2008; OI Ruiz, Angel/0000-0002-3352-4383; Constantin, Anca/0000-0002-2441-1619; Wilkes, Belinda/0000-0003-1809-2364 FU National Aeronautics and Space Administration [AR9-0020X, AR1-12016X, NAS8-03060] FX The authors thank Francesca Civano and Hagai Netzer for their useful comments. Support for this work was provided by the National Aeronautics and Space Administration through Chandra Award nos. AR9-0020X and AR1-12016X, issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics Space Administration under contract NAS8-03060. NR 92 TC 26 Z9 26 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD JUN PY 2012 VL 200 IS 2 AR 17 DI 10.1088/0067-0049/200/2/17 PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 956KH UT WOS:000305088000007 ER PT J AU Bain, DJ Green, MB Campbell, JL Chamblee, JF Chaoka, S Fraterrigo, JM Kaushal, SS Martin, SL Jordan, TE Parolari, AJ Sobczak, WV Weller, DE Wollheim, WM Boose, ER Duncan, JM Gettel, GM Hall, BR Kumar, P Thompson, JR Vose, JM Elliott, EM Leigh, DS AF Bain, Daniel J. Green, Mark B. Campbell, John L. Chamblee, John F. Chaoka, Sayo Fraterrigo, Jennifer M. Kaushal, Sujay S. Martin, Sherry L. Jordan, Thomas E. Parolari, Anthony J. Sobczak, William V. Weller, Donald E. Wollheim, Wilfred M. Boose, Emery R. Duncan, Jonathan M. Gettel, Gretchen M. Hall, Brian R. Kumar, Praveen Thompson, Jonathan R. Vose, James M. Elliott, Emily M. Leigh, David S. TI Legacy Effects in Material Flux: Structural Catchment Changes Predate Long-Term Studies SO BIOSCIENCE LA English DT Article DE legacy effect; long-term studies; structural and signal legacy effects; sedimentation ID RHODE RIVER WATERSHEDS; NORTHERN HARDWOOD FOREST; LAND-USE CHANGE; AGRICULTURAL ABANDONMENT; AIR-TEMPERATURE; SOIL-NITROGEN; FRESH-WATER; CARBON; PRECIPITATION; DISCHARGES AB Legacy effects of past land use and disturbance are increasingly recognized, yet consistent definitions of and criteria for defining them do not exist. To address this gap in biological- and ecosystem-assessment frameworks, we propose a general metric for evaluating potential legacy effects, which are computed by normalizing altered system function persistence with duration of disturbance. We also propose two distinct legacy-effect categories: signal effects from lags in transport and structural effects from physical landscape changes. Using flux records for water, sediment, nitrogen, and carbon from long-term study sites in the eastern United States from 1500 to 2000, we identify gaps in our understanding of legacy effects and reveal that changes in basin sediment dynamics precede instrumented records. These sediment dynamics are not generally incorporated into interpretations of contemporary records, although their potential legacy effects are substantial. The identification of legacy effects may prove to be a fundamental component of landscape management and effective conservation and restoration practice. C1 [Bain, Daniel J.; Elliott, Emily M.] Univ Pittsburgh, Dept Geol & Planetary Sci, Pittsburgh, PA 15260 USA. [Green, Mark B.] Plymouth State Univ, Ctr Environm, Plymouth, NH USA. [Green, Mark B.; Campbell, John L.] US Forest Serv, No Res Stn, Durham, NH USA. [Chaoka, Sayo; Kumar, Praveen] Univ Illinois, Dept Civil & Environm Engn, Urbana, IL 61801 USA. [Fraterrigo, Jennifer M.] Univ Illinois, Dept Nat Resources & Environm Sci, Urbana, IL 61801 USA. [Kaushal, Sujay S.] Univ Maryland, Dept Geol, College Pk, MD 20742 USA. [Kaushal, Sujay S.] Univ Maryland, Earth Syst Sci Interdisciplinary Ctr, College Pk, MD 20742 USA. [Martin, Sherry L.] Michigan State Univ, Dept Geol Sci, E Lansing, MI 48824 USA. [Jordan, Thomas E.; Weller, Donald E.] Smithsonian Environm Res Ctr, Edgewater, MD 21037 USA. [Parolari, Anthony J.] MIT, Dept Civil & Environm Engn, Cambridge, MA 02139 USA. [Sobczak, William V.] Coll Holy Cross, Dept Biol, Worcester, MA 01610 USA. [Wollheim, Wilfred M.] Univ New Hampshire, Dept Nat Resources & Environm, Durham, NH 03824 USA. [Wollheim, Wilfred M.] Univ New Hampshire, Environm & Complex Syst Res Ctr, Durham, NH 03824 USA. [Boose, Emery R.; Hall, Brian R.] Harvard Univ Harvard Forest, Petersham, MA USA. [Duncan, Jonathan M.] Univ N Carolina, Dept Geog, Chapel Hill, NC USA. [Gettel, Gretchen M.] United Nations Educ Sci & Cultural Org, Int Inst Infrastruct Hydraul & Environm Engn, Delft, Netherlands. [Thompson, Jonathan R.] Smithsonian Inst, Smithsonian Conservat Biol Inst, Front Royal, VA USA. [Vose, James M.] US Forest Serv, So Res Stn, Otto, NC USA. [Leigh, David S.] Univ Georgia, Dept Geog, Athens, GA 30602 USA. RP Bain, DJ (reprint author), Univ Pittsburgh, Dept Geol & Planetary Sci, Pittsburgh, PA 15260 USA. EM dbain@pitt.edu RI Kumar, Praveen/D-2036-2010; Chamblee, John/A-7168-2013; Elliott, Emily /E-8122-2011; Bain, Daniel/G-3055-2013; Parolari, Anthony/I-5137-2013; Gettel, Gretchen/M-8983-2013; Kaushal, Sujay/G-1062-2013; OI Kumar, Praveen/0000-0002-4787-0308; Chamblee, John/0000-0002-7776-0302; Elliott, Emily /0000-0002-9653-1513; Gettel, Gretchen/0000-0002-9288-1583; Kaushal, Sujay/0000-0003-0834-9189; Green, Mark/0000-0002-7415-7209; Campbell, John/0000-0003-4956-1696; Weller, Donald/0000-0002-7629-5437 FU Long Term Ecological Research Network Office (National Science Foundation [NSF]) [DEB-0236154]; NSF Division of Earth Sciences [0854957]; NSF's Long-Term Ecological Research Network [DEB-1027188, DEB-0823293, DEB-1114804, DEB-0620443, NSF-OCE-0423565, NSF-OCE-1058747]; NSF [DEB-79-11563, DEB-82072-12, CEE-8219615, BSR-8316948, BSR-8615902, BSR-8905219, BSR-891703, BSR-9085219, DEB-92-06811, DEB-93-17968]; National Oceanic and Atmospheric Administration [NA66RG0129]; US Environmental Protection Agency [804536] FX This manuscript grew out of a working group sponsored by the Long Term Ecological Research Network Office (National Science Foundation [NSF] Cooperative Agreement no. DEB-0236154), with supplementary funding from NSF Division of Earth Sciences grant no. 0854957 to the City University of New York. This material is based on work at Long Term Ecological Research sites supported by the NSF's Long-Term Ecological Research Network under the following grant numbers: DEB-1027188 to the Baltimore Ecosystem Study, DEB-0823293 to the Coweeta Hydrologic Laboratory, DEB-1114804 to the Hubbard Brook Experimental Forest, DEB-0620443 to the Harvard Forest site, and NSF-OCE-0423565 and NSF-OCE-1058747 to the Plum Island Ecosystem. The Smithsonian Environmental Research Center watershed discharge data were collected with support from the NSF (grant nos. DEB-79-11563, DEB-82072-12, CEE-8219615, BSR-8316948, BSR-8615902, BSR-8905219, BSR-891703, BSR-9085219, DEB-92-06811, and DEB-93-17968), from the National Oceanic and Atmospheric Administration Coastal Oceans Program (grant no. NA66RG0129), the US Environmental Protection Agency (grant no. 804536), and the Smithsonian Institution Environmental Sciences Program. The careful comments of three anonymous reviewers improved the article. NR 57 TC 26 Z9 28 U1 2 U2 59 PU AMER INST BIOLOGICAL SCI PI WASHINGTON PA 1444 EYE ST, NW, STE 200, WASHINGTON, DC 20005 USA SN 0006-3568 J9 BIOSCIENCE JI Bioscience PD JUN PY 2012 VL 62 IS 6 BP 575 EP 584 DI 10.1525/bio.2012.62.6.8 PG 10 WC Biology SC Life Sciences & Biomedicine - Other Topics GA 958TB UT WOS:000305262500008 ER PT J AU Altieri, AH Bertness, MD Coverdale, TC Herrmann, NC Angelini, C AF Altieri, Andrew H. Bertness, Mark D. Coverdale, Tyler C. Herrmann, Nicholas C. Angelini, Christine TI A trophic cascade triggers collapse of a salt-marsh ecosystem with intensive recreational fishing SO ECOLOGY LA English DT Article DE Cape Cod, Massachusetts, USA; conservation; food web; human impacts; marine; overfishing; plant-herbivore interactions; recreational fishing; Spartina alterniflora; top-down control; top predator; trophic cascade ID CORAL-REEFS; CALLINECTES-SAPIDUS; CONSUMER CONTROL; CHESAPEAKE BAY; HUMAN IMPACTS; ST-LAWRENCE; NEW-ENGLAND; BLUE CRABS; DIE-OFF; FISHERIES AB Overexploitation of predators has been linked to the collapse of a growing number of shallow-water marine ecosystems. However, salt-marsh ecosystems are often viewed and managed as systems controlled by physical processes, despite recent evidence for herbivore-driven die-off of marsh vegetation. Here we use field observations, experiments, and historical records at 14 sites to examine whether the recently reported die-off of northwestern Atlantic salt marshes is associated with the cascading effects of predator dynamics and intensive recreational fishing activity. We found that the localized depletion of top predators at sites accessible to recreational anglers has triggered the proliferation of herbivorous crabs, which in turn results in runaway consumption of marsh vegetation. This suggests that overfishing may be a general mechanism underlying the consumer-driven die-off of salt marshes spreading throughout the western Atlantic. Our findings support the emerging realization that consumers play a dominant role in regulating marine plant communities and can lead to ecosystem collapse when their impacts are amplified by human activities, including recreational fishing. C1 [Altieri, Andrew H.; Bertness, Mark D.; Coverdale, Tyler C.; Herrmann, Nicholas C.; Angelini, Christine] Brown Univ, Dept Ecol & Evolutionary Biol, Providence, RI 02912 USA. RP Altieri, AH (reprint author), Smithsonian Trop Res Inst, Apartado 0843-03092, Balboa, Ancon, Panama. EM AltieriA@si.edu OI Coverdale, Tyler/0000-0003-0910-9187 NR 61 TC 53 Z9 53 U1 18 U2 169 PU ECOLOGICAL SOC AMER PI WASHINGTON PA 1990 M STREET NW, STE 700, WASHINGTON, DC 20036 USA SN 0012-9658 J9 ECOLOGY JI Ecology PD JUN PY 2012 VL 93 IS 6 BP 1402 EP 1410 PG 9 WC Ecology SC Environmental Sciences & Ecology GA 959EV UT WOS:000305296600017 PM 22834380 ER PT J AU Souto, T Ticktin, T AF Souto, Tamia Ticktin, Tamara TI Understanding Interrelationships Among Predictors (Age, Gender, and Origin) of Local Ecological Knowledge SO ECONOMIC BOTANY LA English DT Article DE Local ecological knowledge; mestizo; Venezuela; multiple regression analysis ID MEDICINAL-PLANTS; BRAZIL; FOREST; ETHNOBOTANY; DIVERSITY; COMMUNITIES; CONSERVATION; NICARAGUA; AMAZONIA; COAST AB Understanding Interrelationships among Predictors (Age, Gender, and Origin) of Local Ecological Knowledge. Understanding which factors predict local ecological knowledge can provide insight into how this knowledge is learned and how it may change in the future. We assess how knowledge of both useful plants and plant natural history vary according to gender, age, and origin in mestizo communities in Venezuela's Caura Basin. Two sets of structured questionnaires were carried out with a total of 83 adults in three communities. Multiple regression analyses were used to identify the predictors of knowledge of 6 plant-use categories and natural history knowledge of 12 plant species. Gender, age, and origin (a parts per thousand yen2 generations in the Caura vs. foreign-born) were all important predictors of knowledge of useful plants and natural history; however, their importance differed between the two types of knowledge. Origin was a more important predictor of knowledge of useful plants, whereas age was more important in predicting knowledge of natural history. This suggests differences in how each type of knowledge is learned and transmitted. Gender was an important predictor variable in most models, reflecting gender roles in the Caura mestizo communities. Also, for most categories of plant-use knowledge, the interactions among predictors were significant, indicating that the effect of one variable depended on the level of the other. These results illustrate how overlooking interactions among variables, as most studies to date have done, can risk misinterpretation of results by simplifying complex situations. C1 [Souto, Tamia; Ticktin, Tamara] Univ Hawaii Manoa, Dept Bot, Honolulu, HI 96822 USA. [Souto, Tamia] Smithsonian Conservat Biol Inst, Ctr Conservat Educ & Sustainabil, Washington, DC 20013 USA. RP Souto, T (reprint author), Univ Hawaii Manoa, Dept Bot, 3190 Maile Way, Honolulu, HI 96822 USA. EM soutot@si.edu FU National Science Foundation; Wildlife Conservation Society FX The authors are very grateful to all the wonderful families of Trincheras, Jabillal, and Puerto Cabello for their time and for sharing their ethnobotanical knowledge of the Caura forests with us. Special thanks to Enrique Bastidas and his family for their support, collaboration, and participation during the field work, and to H. McMillen and O. Gaoue for their help during the analysis and writing of this paper. We also thank two anonymous reviewers for their useful suggestions for improving a previous version of this manuscript. This research was funded by a National Science Foundation Graduate Research Fellowship Award and a Wildlife Conservation Society Award to T. S. NR 35 TC 10 Z9 11 U1 1 U2 22 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0013-0001 J9 ECON BOT JI Econ. Bot. PD JUN PY 2012 VL 66 IS 2 BP 149 EP 164 DI 10.1007/s12231-012-9194-3 PG 16 WC Plant Sciences SC Plant Sciences GA 958IT UT WOS:000305230700004 ER PT J AU Kim, M Nam, SW Shin, W Coats, DW Park, MG AF Kim, Miran Nam, Seung Won Shin, Woongghi Coats, D. Wayne Park, Myung Gil TI DINOPHYSIS CAUDATA (DINOPHYCEAE) SEQUESTERS AND RETAINS PLASTIDS FROM THE MIXOTROPHIC CILIATE PREY MESODINIUM RUBRUM SO JOURNAL OF PHYCOLOGY LA English DT Article DE Dinophysis caudata; Mesodinium rubrum; kleptoplastid; plastid; single-cell TEM; ultrastructure ID MYRIONECTA-RUBRA; MOLECULAR EVIDENCE; GENETIC ANALYSES; DINOFLAGELLATE; ACUMINATA; CHLOROPLASTS; KLEPTOPLASTIDY; ENDOSYMBIONT; STRAINS; FORTII AB PhototrophicDinophysis Ehrenberg species are well known to have chloroplasts of a cryptophyte origin, more specifically of the cryptophyte genus complex Teleaulax/Geminigera. Nonetheless, whether chloroplasts of phototrophicDinophysis are permanent plastids or periodically derived kleptoplastids (stolen chloroplasts) has not been confirmed. Indeed, molecular sequence data and ultrastructural data lead to contradictory interpretations about the status of Dinophysis plastids. Here, we used established cultures of D. caudata strain DC-LOHABE01 and M. rubrum strain MR-MAL01 to address the status of Dinophysis plastids. Our approach was to experimentally generate D. caudata with green plastids and then follow the ingestion and fate of reddish-brown prey plastids using light microscopy, time-lapse videography, and single-cell TEM. Our results for D. caudata resolve the apparent discrepancy between morphological and molecular data by showing that plastids acquired when feeding on M. rubrum are structurally modified and retained as stellate compound chloroplasts characteristic of Dinophysis species. C1 [Kim, Miran; Park, Myung Gil] Chonnam Natl Univ, Dept Oceanog, LOHABE, Kwangju 500757, South Korea. [Nam, Seung Won; Shin, Woongghi] Chungnam Natl Univ, Dept Biol Sci, Taejon 306764, South Korea. [Coats, D. Wayne] Smithsonian Environm Res Ctr, Edgewater, MD 21037 USA. RP Park, MG (reprint author), Chonnam Natl Univ, Dept Oceanog, LOHABE, Kwangju 500757, South Korea. EM mpark@chonnam.ac.kr RI Shin, Woongghi/D-5677-2013 FU NRF; MEST [2011-0015820]; National Research Foundation of Korea; Korean Government (MEST) [NRF-C1ABA001-2010-0020700] FX This work was supported by Mid-career Researcher Program through NRF grant funded by the MEST (2011-0015820) and the National Research Foundation of Korea Grant funded by the Korean Government (MEST) (NRF-C1ABA001-2010-0020700) (M.G.P). NR 33 TC 23 Z9 23 U1 0 U2 23 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0022-3646 J9 J PHYCOL JI J. Phycol. PD JUN PY 2012 VL 48 IS 3 BP 569 EP 579 DI 10.1111/j.1529-8817.2012.01150.x PG 11 WC Plant Sciences; Marine & Freshwater Biology SC Plant Sciences; Marine & Freshwater Biology GA 952RP UT WOS:000304810200008 PM 27011072 ER PT J AU Servillat, M Heinke, CO Ho, WCG Grindlay, JE Hong, J van den Berg, M Bogdanov, S AF Servillat, M. Heinke, C. O. Ho, W. C. G. Grindlay, J. E. Hong, J. van den Berg, M. Bogdanov, S. TI Neutron star atmosphere composition: the quiescent, low-mass X-ray binary in the globular cluster M28 SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE equation of state; stars: neutron; globular clusters: individual: M28; globular clusters: individual: NGC 6626; X-rays: binaries; X-rays: individual: CXOGlb J182432; 8-245208 ID SPACE-TELESCOPE OBSERVATIONS; EQUATION-OF-STATE; THERMAL EMISSION; XMM-NEWTON; OPTICAL COUNTERPART; INTERSTELLAR-MEDIUM; OMEGA-CENTAURI; MAXIMUM MASS; MILKY-WAY; NGC 6440 AB Using deep Chandra observations of the globular cluster M28, we study the quiescent X-ray emission of a neutron star in a low-mass X-ray binary in order to constrain the chemical composition of the neutron star atmosphere and the equation of state of dense matter. We fit the spectrum with different neutron star atmosphere models composed of hydrogen, helium or carbon. The parameter values obtained with the carbon model are unphysical and such a model can be ruled out. Hydrogen and helium models give realistic parameter values for a neutron star, and the derived mass and radius are clearly distinct depending on the composition of the atmosphere. The hydrogen model gives masses/radii consistent with the canonical values of 1.4 M? and 10 km, and would allow for the presence of exotic matter inside neutron stars. On the other hand, the helium model provides solutions with higher masses/radii, consistent with the stiffest equations of state. Measurements of neutron star masses/radii by spectral fitting should consider the possibility of heavier element atmospheres, which produce larger masses/radii for the same data, unless the composition of the accretor is known independently. C1 [Servillat, M.; Grindlay, J. E.; Hong, J.; van den Berg, M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Servillat, M.] Univ Paris Diderot, CEA Saclay, CNRS, Lab AIM CEA DSM IRFU SAp, F-91191 Gif Sur Yvette, France. [Heinke, C. O.] Univ Alberta, Dept Phys, Edmonton, AB T6G 2E1, Canada. [Ho, W. C. G.] Univ Southampton, Sch Math, Southampton SO17 1BJ, Hants, England. [van den Berg, M.] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 XH Amsterdam, Netherlands. [Bogdanov, S.] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA. RP Servillat, M (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM mservillat@cfa.harvard.edu OI Bogdanov, Slavko/0000-0002-9870-2742; Heinke, Craig/0000-0003-3944-6109 FU NASA [GO0-11063X]; NSF [AST-0909073]; Centre National d'Etudes Spatiales (CNES); NSERC; Ingenuity New Faculty Award; STFC in the UK FX We thank the referee for their careful reading and useful suggestions that strengthened the paper. MS acknowledges supports from NASA/Chandra grant GO0-11063X, NSF grant AST-0909073 and the Centre National d'Etudes Spatiales (CNES). COH is supported by NSERC and an Ingenuity New Faculty Award. WCGH appreciates the use of the computer facilities at KIPAC and acknowledges support from STFC in the UK. NR 59 TC 28 Z9 28 U1 0 U2 5 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUN PY 2012 VL 423 IS 2 BP 1556 EP 1561 DI 10.1111/j.1365-2966.2012.20976.x PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 956DU UT WOS:000305070900044 ER PT J AU Fontani, F Palau, A Busquet, G Isella, A Estalella, R Sanchez-Monge, A Caselli, P Zhang, Q AF Fontani, F. Palau, Aina Busquet, G. Isella, A. Estalella, R. Sanchez-Monge, A. Caselli, P. Zhang, Q. TI Dense gas in IRAS 20343+4129: an ultracompact H ii region caught in the act of creating a cavity SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE stars: formation; ISM: individual objects: IRAS 20343+4129; ISM: molecules ID MASSIVE STAR-FORMATION; YOUNG STELLAR OBJECTS; INITIAL CONDITIONS; PROTOSTELLAR CANDIDATES; CONTINUUM OBSERVATIONS; INVERSION TRANSITION; CORES; AMMONIA; NH3; CLOUD AB The intermediate- to high-mass star-forming region IRAS 20343+4129 is an excellent laboratory to study the influence of high- and intermediate-mass young stellar objects on nearby starless dense cores, and investigate for possible implications in the clustered star formation process. We present 3 mm observations of continuum and rotational transitions of several molecular species (C2H, c-C3H2, N2H+, NH2D) obtained with the Combined Array for Research in Millimetre-wave Astronomy, as well as 1.3 cm continuum and NH3 observations carried out with the Very Large Array, to reveal the properties of the dense gas. We confirm undoubtedly previous claims of an expanding cavity created by an ultracompact H ii region associated with a young B2 zero-age main sequence (ZAMS) star. The dense gas surrounding the cavity is distributed in a filament that seems squeezed in between the cavity and a collimated outflow associated with an intermediate-mass protostar. We have identified 5 mm continuum condensations in the filament. All of them show column densities consistent with potentially being the birthplace of intermediate- to high-mass objects. These cores appear different from those observed in low-mass clustered environments in several observational aspects (kinematics, temperature, chemical gradients), indicating a strong influence of the most massive and evolved members of the protocluster. We suggest a possible scenario in which the B2 ZAMS star driving the cavity has compressed the surrounding gas, perturbed its properties and induced the star formation in its immediate surroundings. C1 [Fontani, F.; Sanchez-Monge, A.] IINAF Osservatorio Astrofis Arcetri, I-50125 Florence, Italy. [Palau, Aina] CSIC, Inst Ciencies Espai, IEEC, Fac Ciencies, E-08193 Bellaterra, Catalunya, Spain. [Busquet, G.] INAF Ist Fis Spazio Interplanetario, I-00133 Rome, Italy. [Isella, A.] CALTECH, Div Phys Math & Astron, Pasadena, CA 91125 USA. [Estalella, R.] Univ Barcelona, Inst Ciencies Cosmos, Dept Astron & Meteorol IEEC UB, E-08028 Barcelona, Spain. [Caselli, P.] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England. [Zhang, Q.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Fontani, F (reprint author), IINAF Osservatorio Astrofis Arcetri, Lgo E Fermi 5, I-50125 Florence, Italy. EM fontani@arcetri.astro.it OI Fontani, Francesco/0000-0003-0348-3418; Zhang, Qizhou/0000-0003-2384-6589 FU Owens Valley Radio Observatory; Spanish MICINN [AYA2008-06189-C03]; JAE-Doc CSIC; European Social Fund under the programme 'Junta para la Ampliacion de Estudios'; Italian Space Agency (ASI) [I/005/07/01]; National Science Foundation [AST 05-40399] FX Support for CARMA construction was derived from the Gordon and Betty Moore Foundation, the Kenneth T. and Eileen L. Norris Foundation, the James S. McDonnell Foundation, the Associates of the California Institute of Technology, the University of Chicago, the states of California, Illinois, and Maryland, and the National Science Foundation. Ongoing CARMA development and operations are supported by the National Science Foundation under a cooperative agreement, and by the CARMA partner universities. We acknowledge support from the Owens Valley Radio Observatory, which is supported by the National Science Foundation through grant AST 05-40399. AP is grateful to Inma Sepulveda for insightful discussions. AP is supported by the Spanish MICINN grant AYA2008-06189-C03 (co-funded with FEDER funds) and by a JAE-Doc CSIC fellowship co-funded with the European Social Fund under the programme 'Junta para la Ampliacion de Estudios'. GB is funded by an Italian Space Agency (ASI) fellowship under contract number I/005/07/01. We are grateful to the anonymous referee for his/her valuable comments and suggestions. NR 56 TC 9 Z9 9 U1 1 U2 2 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0035-8711 EI 1365-2966 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUN PY 2012 VL 423 IS 2 BP 1691 EP 1706 DI 10.1111/j.1365-2966.2012.20990.x PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 956DU UT WOS:000305070900055 ER PT J AU Hirsch, BT Kays, R Jansen, PA AF Hirsch, Ben T. Kays, Roland Jansen, Patrick A. TI A telemetric thread tag for tracking seed dispersal by scatter-hoarding rodents SO PLANT ECOLOGY LA English DT Article DE Radio telemetry; Seed tag; Animal dispersed seeds; Astrocaryum; Agouti ID LONG-DISTANCE DISPERSAL; CENTRAL-AMERICAN AGOUTI; ASTROCARYUM-STANDLEYANUM; DASYPROCTA-PUNCTATA; RAIN-FOREST; PANAMA; MOVEMENTS; CACHES; PLANTS; FIELD AB The seeds of many tree species are dispersed more than once, and this secondary seed dispersal is believed to enhance seedling recruitment. However, the effectiveness of secondary seed dispersal has rarely been assessed because it is difficult to track seeds until they die or germinate. We describe a new technique that uses thread tags attached to radio transmitters (telemetric thread tags) to track long-distance multistep seed dispersal by scatter-hoarding rodents. These telemetric thread tags can be turned off with a magnet and are reactivated when the seed moves. This method allows for seed tracking with minimal cache disturbance or distance bias, over long time spans, multiple seed movements, and with few effects on animal behavior. We used telemetric thread tags to track seed dispersal of the palm tree Astrocaryum standleyanum in a Neotropical forest, and achieved near-complete recovery of dispersed seeds tracked over distances as far as 241 m. We were also able to record the recovery time and fate of cached seeds without disturbing caches. Neither the removal rate nor the dispersal distance differed between seeds with telemetric thread tags and thread-tagged seeds. We conclude that telemetric thread tags can be used to document secondary seed dispersal by scatter-hoarding animals with unprecedented efficacy and precision. Given the size of these tags relative to the size of seeds and their dispersers, this method is applicable to the majority of tree species that are secondarily dispersed by scatter-hoarding mammals. C1 [Hirsch, Ben T.] Ohio State Univ, Sch Environm & Nat Resources, Columbus, OH 43210 USA. [Hirsch, Ben T.; Kays, Roland; Jansen, Patrick A.] Smithsonian Trop Res Inst, Unit 9100, DPO AA, Panama City 340029898, Panama. [Kays, Roland] N Carolina Museum Nat Sci, Nat Res Ctr, Raleigh, NC 27601 USA. [Jansen, Patrick A.] Univ Wageningen & Res Ctr, Forest Ecol & Forest Management Grp, NL-6700 AA Wageningen, Netherlands. [Jansen, Patrick A.] Univ Groningen, Community & Conservat Ecol Grp, NL-9700 CC Groningen, Netherlands. RP Hirsch, BT (reprint author), Ohio State Univ, Sch Environm & Nat Resources, 2021 Coffey Rd, Columbus, OH 43210 USA. EM hirschb@si.edu RI Jansen, Patrick/G-2545-2015 OI Jansen, Patrick/0000-0002-4660-0314 FU National Science Foundation [NSF-DEB 0717071]; Netherlands Organization for Scientific Research [W85-239, 863-07-008] FX We thank Tom Garin (ATS), Daniel Obando, Alejandro Ortega and Meg Crofoot for technical support; Lieneke Bakker, Reyna Bell, Chris Carson, Willem-Jan Emsens, Matt McElroy, Veronica Pereira, Torrey Rodgers, Sumana Serchan, Michiel Veldhuis, Brian Watts, and Veronica Zamora Guttierez for field assistance; the Smithsonian Tropical Research Institute for facilities and administrative support. Joe Wright allowed us access to unpublished data on seed weight, and brought up the original idea for radio-tracking seeds with ARTS. We thank two anonymous reviewers for their helpful comments and suggestions. We also thank Patricia Kernan for the figure artwork. This study was supported by funding from the National Science Foundation (NSF-DEB 0717071 to RWK) and the Netherlands Organization for Scientific Research (Grants: W85-239 and 863-07-008 to P.A.J.). NR 56 TC 19 Z9 20 U1 2 U2 30 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 1385-0237 J9 PLANT ECOL JI Plant Ecol. PD JUN PY 2012 VL 213 IS 6 BP 933 EP 943 DI 10.1007/s11258-012-0054-0 PG 11 WC Plant Sciences; Ecology; Forestry SC Plant Sciences; Environmental Sciences & Ecology; Forestry GA 958KJ UT WOS:000305235100005 ER PT J AU Frohlich, B AF Froehlich, Bruno TI Living with herds: human-animal coexistence in Mongolia SO ANTIQUITY LA English DT Book Review C1 [Froehlich, Bruno] Smithsonian Inst, Dept Anthropol, Natl Museum Nat Hist, Washington, DC 20560 USA. RP Frohlich, B (reprint author), Smithsonian Inst, Dept Anthropol, Natl Museum Nat Hist, Washington, DC 20560 USA. EM frohlich@si.edu NR 1 TC 0 Z9 0 U1 0 U2 0 PU ANTIQUITY PI YORK PA KINGS MANOR, YORK YO1 7EP, ENGLAND SN 0003-598X J9 ANTIQUITY JI Antiquity PD JUN PY 2012 VL 86 IS 332 BP 592 EP 594 PG 3 WC Anthropology; Archaeology SC Anthropology; Archaeology GA 951OE UT WOS:000304729100043 ER PT J AU Burenin, RA Vikhlinin, AA AF Burenin, R. A. Vikhlinin, A. A. TI Cosmological parameters constraints from galaxy cluster mass function measurements in combination with other cosmological data SO ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS LA English DT Article DE Cosmology; cosmological parameters; galaxy clusters ID HUBBLE-SPACE-TELESCOPE; MICROWAVE BACKGROUND ANISOTROPIES; DARK ENERGY; HYDROGEN RECOMBINATION; LIGHT CURVES; CALIBRATION; NEUTRINOS; CONSTANT; OMEGA(M); SPECTRUM AB We present the cosmological parameters constraints obtained from the combination of galaxy cluster mass function measurements (Vikhlinin et al. 2009a, 2009b) with new cosmological data obtained during last three years: updated measurements of cosmic microwave background anisotropy with Wilkinson Microwave Anisotropy Probe (WMAP) observatory, and at smaller angular scales with South Pole Telescope (SPT), new Hubble constant measurements, baryon acoustic oscillations and supernovae Type Ia observations. New constraints on total neutrino mass I m pound (nu) and effective number of neutrino species are obtained. In models with free number of massive neutrinos the constraints on these parameters are notably less strong, and all considered cosmological data are consistent with non-zero total neutrino mass I m pound (nu) a parts per thousand 0.4 eV and larger than standard effective number of neutrino species, N (eff) a parts per thousand 4. These constraints are compared to the results of neutrino oscillations searches at short baselines. The updated dark energy equation of state parameter constraints are presented. We show that taking in account systematic uncertanties, current cluster mass funstion data provide similarly powerful constraints on dark energy equation of state, as compared to the constraints from supernovae Type Ia observations. C1 [Burenin, R. A.] Space Res Inst IKI, Moscow, Russia. [Vikhlinin, A. A.] Harvard Smithsonian Ctr Astrophys CfA, Boston, MA USA. RP Burenin, RA (reprint author), Space Res Inst IKI, Moscow, Russia. EM rodion@hea.iki.rssi.ru FU Russian Foundation for Basic Research [08-02-00974, 09-02-12384-ofi-m, 10-02-01442, 11-02-12271-ofi-m]; Russian Federation [Nsh-5069.2010.2]; Russian Academy of Sciences [P-21, OPhN-16] FX We are grateful to D. S. Gorbunov for useful discussion of the results of our work and for a number of important remarks and suggestions. In this work the results of calculations on MVS-100K supercomputer of Joint Supercomputer Center of the Russian Academy of Sciences (JSCC RAS) were used. The work is supported by Russian Foundation for Basic Research, grants 08-02-00974, 09-02-12384-ofi-m, 10-02-01442, 11-02-12271-ofi-m, the Program for Support of Leading Scientific Schools of the Russian Federation (Nsh-5069.2010.2), and the Programs of the Russian Academy of Sciences P-21 and OPhN-16. NR 87 TC 18 Z9 18 U1 0 U2 1 PU MAIK NAUKA/INTERPERIODICA/SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013-1578 USA SN 1063-7737 EI 1562-6873 J9 ASTRON LETT+ JI Astron. Lett.-J. Astron. Space Astrophys. PD JUN PY 2012 VL 38 IS 6 BP 347 EP 363 DI 10.1134/S1063773712060011 PG 17 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 956ZM UT WOS:000305128100001 ER PT J AU Koblitz, K AF Koblitz, Karen TI Remembering Ken Price 1935-2012 SO CERAMICS-ART AND PERCEPTION LA English DT Biographical-Item C1 [Koblitz, Karen] Univ So Calif, Ceram Roski Sch Fine Arts, Los Angeles, CA 90089 USA. [Koblitz, Karen] Smithsonian Inst, Renwick Gallery Amer Art, Washington, DC 20560 USA. RP Koblitz, K (reprint author), Univ So Calif, Ceram Roski Sch Fine Arts, Los Angeles, CA 90089 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU CERAMIC ART PI SHERIDAN PA 23 NORTH SCOTT ST, STE 19, SHERIDAN, WYOMING 82801 USA SN 1035-1841 J9 CERAMICS-ART PERCEPT JI Ceramics-Art Percept. PD JUN-AUG PY 2012 IS 88 BP 115 EP 115 PG 1 WC Art SC Art GA 955QA UT WOS:000305034800031 ER PT J AU Zigler, KS Byrne, M Raff, EC Lessios, HA Raff, RA AF Zigler, Kirk S. Byrne, Maria Raff, Elizabeth C. Lessios, H. A. Raff, Rudolf A. TI NATURAL HYBRIDIZATION IN THE SEA URCHIN GENUS PSEUDOBOLETIA BETWEEN SPECIES WITHOUT APPARENT BARRIERS TO GAMETE RECOGNITION SO EVOLUTION LA English DT Article DE Bindin; echinoid; gamete compatibility; hybridization; Pseudoboletia; speciation ID ACROSOMAL SPERM PROTEIN; REPRODUCTIVE ISOLATION; POSITIVE SELECTION; MITOCHONDRIAL-DNA; STRONGYLOCENTROTUS-DROEBACHIENSIS; POPULATION-STRUCTURE; ACROCNIDA-BRACHIATA; STARS LEPTASTERIAS; HYBRID SPECIATION; MARINE SPECIATION AB Marine species with high dispersal potential often have huge ranges and minimal population structure. Combined with the paucity of geographic barriers in the oceans, this pattern raises the question as to how speciation occurs in the sea. Over the past 20 years, evidence has accumulated that marine speciation is often linked to the evolution of gamete recognition proteins. Rapid evolution of gamete recognition proteins in gastropods, bivalves, and sea urchins is correlated with gamete incompatibility and contributes to the maintenance of species boundaries between sympatric congeners. Here, we present a counterexample to this general pattern. The sea urchins Pseudoboletia indiana and P. maculata have broad ranges that overlap in the Indian and Pacific oceans. Cytochrome oxidase I sequences indicated that these species are distinct, and their 7.3% divergence suggests that they diverged at least 2 mya. Despite this, we suspected hybridization between them based on the presence of morphologically intermediate individuals in sympatric populations at Sydney, Australia. We assessed the opportunity for hybridization between the two species and found that (1) individuals of the two species occur within a meter of each other in nature, (2) they have overlapping annual reproductive cycles, and (3) their gametes cross-fertilize readily in the laboratory and in the field. We genotyped individuals with intermediate morphology and confirmed that many were hybrids. Hybrids were fertile, and some female hybrids had egg sizes intermediate between the two parental species. Consistent with their high level of gamete compatibility, there is minimal divergence between P. indiana and P. maculata in the gamete recognition protein bindin, with a single fixed amino acid difference between the two species. Pseudoboletia thus provides a well-characterized exception to the idea that broadcast spawning marine species living in sympatry develop and maintain species boundaries through the divergence of gamete recognition proteins and the associated evolution of gamete incompatibility. C1 [Zigler, Kirk S.] Univ South, Dept Biol, Sewanee, TN 37383 USA. [Byrne, Maria] Univ Sydney, Sch Med, Sydney, NSW 2006, Australia. [Byrne, Maria; Raff, Elizabeth C.; Raff, Rudolf A.] Univ Sydney, Sch Biol Sci, Sydney, NSW 2006, Australia. [Raff, Elizabeth C.; Raff, Rudolf A.] Indiana Univ, Dept Biol, Bloomington, IN 47401 USA. [Lessios, H. A.] Smithsonian Trop Res Inst, Balboa, Panama. RP Zigler, KS (reprint author), Univ South, Dept Biol, Sewanee, TN 37383 USA. EM kzigler@sewanee.edu RI Byrne, Maria/K-6355-2016 OI Byrne, Maria/0000-0002-8902-9808 FU National Science Foundation; Australian Research Council; Smithsonian Tropical Research Institute FX We thank A. Pile for her help in designing and carrying out the scuba experiment for hybrid fertilization in the field, and for her help in obtaining the transect and depth data at Green Point in 2005. We thank H. Sowden, L. Edwards, H. Giragossyan, and A. Smoothey for their help with sea urchin collecting, obtaining data on Pseudoboletia species distribution in 2003 and 2004, and carrying out the field fertilization experiment; J. Villinski for his help with the field fertilization experiment; T. Prowse and S. Barbosa for assistance with the reproductive study; L. Geyer, A. Calderon, L. Calderon, and A. Sidik for assistance in the laboratory; D. R. Robertson for collecting the Pseudoboletia from Sao Tome and Easter Island. KSZ was supported by the National Science Foundation International Research Fellowship Program. This work was also supported by a grant from the Australian Research Council to MB; general research funds from the Smithsonian Tropical Research Institute to HAL; and a National Science Foundation grant to RAR. Contribution number 63 of the Sydney Institute of Marine Science. NR 70 TC 5 Z9 5 U1 2 U2 35 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0014-3820 J9 EVOLUTION JI Evolution PD JUN PY 2012 VL 66 IS 6 BP 1695 EP 1708 DI 10.1111/j.1558-5646.2012.01609.x PG 14 WC Ecology; Evolutionary Biology; Genetics & Heredity SC Environmental Sciences & Ecology; Evolutionary Biology; Genetics & Heredity GA 951YR UT WOS:000304757200003 PM 22671540 ER PT J AU Armitage, SAO Fernandez-Marin, H Wcislo, WT Boomsma, JJ AF Armitage, Sophie A. O. Fernandez-Marin, Hermogenes Wcislo, William T. Boomsma, Jacobus J. TI AN EVALUATION OF THE POSSIBLE ADAPTIVE FUNCTION OF FUNGAL BROOD COVERING BY ATTINE ANTS SO EVOLUTION LA English DT Article DE Formicidae; fungus-growing ants; mycelium; parasites; pupae; prophylactic behavior ID LEAF-CUTTING ANTS; GROWING ANTS; ANTIBIOTIC METABOLITE; ORIENTAL HORNET; HYMENOPTERA; EVOLUTION; ACROMYRMEX; FORMICIDAE; BACTERIA; GARDENS AB Fungus-growing ants (Myrmicinae: Attini) live in an obligate symbiotic relationship with a fungus that they rear for food, but they can also use the fungal mycelium to cover their brood. We surveyed colonies from 20 species of fungus-growing ants and show that brood-covering behavior occurs in most species, but to varying degrees, and appears to have evolved shortly after the origin of fungus farming, but was partly or entirely abandoned in some genera. To understand the evolution of the trait we used quantitative phylogenetic analyses to test whether brood-covering behavior covaries among attine ant clades and with two hygienic traits that reduce risk of disease: mycelial brood cover did not correlate with mutualistic bacteria that the ants culture on their cuticles for their antibiotics, but there was a negative relationship between metapleural gland grooming and mycelial cover. A broader comparative survey showed that the pupae of many ant species have protective cocoons but that those in the subfamily Myrmicinae do not. We therefore evaluated the previously proposed hypothesis that mycelial covering of attine ant brood evolved to provide cocoon-like protection for the brood. C1 [Armitage, Sophie A. O.; Fernandez-Marin, Hermogenes; Boomsma, Jacobus J.] Univ Copenhagen, Dept Biol, Ctr Social Evolut, DK-2100 Copenhagen, Denmark. [Armitage, Sophie A. O.] Univ Munster, Inst Evolut & Biodivers, D-48149 Munster, Germany. [Fernandez-Marin, Hermogenes; Wcislo, William T.] Smithsonian Trop Res Inst, Balboa, Ancon, Panama. RP Armitage, SAO (reprint author), Univ Copenhagen, Dept Biol, Ctr Social Evolut, Univ Pk 15, DK-2100 Copenhagen, Denmark. EM sophie.armitage@uni-muenster.de; FernandezH@si.edu RI Boomsma, Jacobus/M-2785-2014; Armitage, Sophie/A-6961-2012 OI Boomsma, Jacobus/0000-0002-3598-1609; Armitage, Sophie/0000-0002-5561-9543 FU Intra-European Marie Curie Fellowship; Volkswagen Foundation; Smithsonian; SENACYT; Danish National Research Foundation; Smithsonian Tropical Research Institute (STRI) FX We would like to thank A. Wild, A. Ivens, D. Kronauer, E. Strohm, H. de Fine Licht, J. Longino, J. Broch, J. Ceballos, J. Heinze, K. Petersen, R. Peu beta, S. Tragust, and S. Cremer for their help with data collection and/or for sharing their knowledge with us. We would also like to thank U. Mueller and an anonymous reviewer for their detailed and helpful comments on the manuscript. SAOA was supported by an Intra-European Marie Curie Fellowship and a Volkswagen Foundation Postdoctoral Fellowship, HFM was supported by a Smithsonian and SENACYT Postdoctoral Fellowships, and HFM and JJB were supported by the Danish National Research Foundation. WTWis grateful for general research support from Smithsonian Tropical Research Institute (STRI). All authors thank the Autoridad Nacional del Ambiente of the Republic of Panama for permits to collect and export ants. This work was done in compliance with all applicable laws. NR 70 TC 10 Z9 10 U1 0 U2 33 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0014-3820 EI 1558-5646 J9 EVOLUTION JI Evolution PD JUN PY 2012 VL 66 IS 6 BP 1966 EP 1975 DI 10.1111/j.1558-5646.2011.01568.x PG 10 WC Ecology; Evolutionary Biology; Genetics & Heredity SC Environmental Sciences & Ecology; Evolutionary Biology; Genetics & Heredity GA 951YR UT WOS:000304757200023 PM 22671560 ER PT J AU Wood, B Schroer, K AF Wood, Bernard Schroer, Kes TI Reconstructing the Diet of an Extinct Hominin Taxon: The Role of Extant Primate Models SO INTERNATIONAL JOURNAL OF PRIMATOLOGY LA English DT Article DE Comparative primatology; Diet reconstruction; Modeling; Paranthropus boisei ID MONKEYS CEBUS-APELLA; UNDERGROUND-STORAGE ORGANS; DENTAL MICROWEAR TEXTURE; FINITE-ELEMENT-ANALYSIS; PONGO-PYGMAEUS-WURMBII; LARGE-BODIED HOMINOIDS; FALLBACK FOODS; ENAMEL THICKNESS; PARANTHROPUS-BOISEI; GENUS CEBUS AB Modern humans represent the only surviving species of an otherwise extinct clade of primates, the hominins. As the closest living relatives to extinct hominins, extant primates are an important source of comparative information for the reconstruction of the diets of extinct hominins. Methods such as comparative and functional morphology, finite element analysis, dental wear, dental topographic analysis, and stable isotope biogeochemistry must be validated and tested within extant populations before they can be applied to extinct taxa. Here we review how these methods have and might be used to reconstruct the diet of a particular extinct hominin, Paranthropus boisei, which has no extant analogue for its highly derived masticatory morphology. Our review emphasizes the potential and limitations of using extant primates as models for the reconstruction of extinct hominin diets. We encourage paleoanthropologists and those who study the feeding behaviors of extant primates to work together to investigate and validate methods for interpreting the diets of all extinct primates, including hominins. C1 [Wood, Bernard; Schroer, Kes] George Washington Univ, Ctr Adv Study Hominid Paleobiol, Dept Anthropol, Washington, DC 20052 USA. [Wood, Bernard] Smithsonian Inst, Natl Museum Nat Hist, Human Origins Program, Washington, DC 20560 USA. RP Schroer, K (reprint author), George Washington Univ, Ctr Adv Study Hominid Paleobiol, Dept Anthropol, Washington, DC 20052 USA. EM bernardawood@gmail.com; kes.schroer@gmail.com FU GW Provost; NSF-IGERT [DGE-0801634]; NSF-GRFP FX B. Wood and K. Schroer thank Erin Vogel and Janine Chalk for their kind invitation to contribute to this volume and for their comments on a draft. Linda Gordon and Darrin Lunde (NMNH) provided assistance with collections. The manuscript was improved by the comments of Joanna Setchell, Andrew Zipkin, Sarah Elton, and two anonymous reviewers. We also thank Joram Berlowitz, Andrew Cunningham, Ian Gilby, John Gurche, Alan Houle, Charlie Jansen, Carson Murray, Matt Sponheimer, and Erin Vogel. We thank the GW Provost, NSF-IGERT DGE-0801634, and NSF-GRFP (to K. Schroer) for research support. NR 122 TC 19 Z9 19 U1 3 U2 60 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0164-0291 EI 1573-8604 J9 INT J PRIMATOL JI Int. J. Primatol. PD JUN PY 2012 VL 33 IS 3 BP 716 EP 742 DI 10.1007/s10764-012-9602-7 PG 27 WC Zoology SC Zoology GA 951ES UT WOS:000304704200012 ER PT J AU Whattam, SA Montes, C McFadden, RR Cardona, A Ramirez, D Valencia, V AF Whattam, Scott A. Montes, Camilo McFadden, Rory R. Cardona, Agustin Ramirez, Diego Valencia, Victor TI Age and origin of earliest adakitic-like magmatism in Panama: Implications for the tectonic evolution of the Panamanian magmatic arc system SO LITHOS LA English DT Article DE Panama; Panamanian magmatic arc system; Central American arc system; Magmatic arc; Adakite; Adakitic-like intrusions ID LOWER CONTINENTAL-CRUST; PORPHYRY COPPER MINERALIZATION; NORTHWESTERN SOUTH-AMERICA; UNDERPLATED BASALTIC CRUST; NORTHERN VOLCANIC ZONE; SLAB MELT METASOMATISM; RIDGE-TRENCH COLLISION; LARGE IGNEOUS PROVINCE; COSTA-RICA; EAST CHINA AB 40-20 Ma marks a fundamental interval in the evolution of the 70-0 Ma Panamanian magmatic arc system. During this period, there is no evidence of Panamanian magmatic arc activity to the east of the Panama Canal Basin while to the west and in localized regions to the east of the Panama Canal Basin a phase of intrusive-only activity is recorded. Fundamentally, geochemical and geochronological evidence presented herein indicate that this intrusive activity was predominantly 'adakitic-like' and becomes younger from west to east along an approximately W-E striking lineament. Granodiorites of the Petaquilla batholith, western Panama yield LAM-ICP-MS Pb-206/U-238 zircon ages of 29.0 + 0.7, -0.6 Ma, 28.5 + 0.7, -0.5 Ma, 28.3 + 0.5, -0.4 Ma and 26.2 + 0.5, -0.9 Ma. To the east of the Panama Canal Basin zircons from a hypabyssal diorite of the mainly intermediate Maje subvolcanic suite, cedes a mean Pb-206/U-238 age of 18.9 + 0.4 Ma. Relative to other 70-5 Ma Panamanian magmatic arc lavas and intrusives, Maje and Petaquilla intrusives yield adakitic-like major and trace element abundances (e.g., > 15 wt.% Al(2)O3, generally > 3.5 wt.% Na2O, > 400 ppm Sr, < 1.9 ppm Yb, < 18 ppm Y, Sr/Y that ranges to > 120) and strongly fractionated HREE patterns. These 30-26 Ma (Petaquilla) and 19 Ma (Maje) suites are also compositionally similar to a subvolcanic suite of rare, circa 25 Ma adakitic-like, andesitic intrusives which occur within the Panama Canal Basin midway between Petaquilla and Male and at the same approximate latitude as Petaquilla and Maje. Collectively, the geochemical and geochronological data for the adakitic-like intrusives arc consistent with formation via partial melting of lowermost, mafic crust above a sub-horizontal slab tear that propagated from the west (Petaquilla) to the east (Male) between 30 and 19 Ma. Our new tectonic model postulates that collision between the Panamanian magmatic arc system and an 'indentor' (e.g., a tract of thickened buoyant, oceanic crust or plateau) occurred at about 40 Ma, a time of which coincides with the initiation of left-lateral offset of the Early (i.e., 70-40 Ma) Arc system. This collision resulted in the shutdown of the Early Arc system, possible steepening of the subducting Farallon slab and ultimately slab break-off and the phase of mainly adakitic-like intrusive activity. Subsequent to slab removal by similar to 20 Ma, NE-dipping subduction jumped to the south and initiated production of the Later (i.e., post 20 Ma) Arc system soon thereafter. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved. C1 [Whattam, Scott A.] Korea Univ, Dept Earth & Environm Sci, Seoul 136701, South Korea. [Whattam, Scott A.; Montes, Camilo; Cardona, Agustin; Ramirez, Diego] Smithsonian Trop Res Inst, Balboa, Ancon, Panama. [Montes, Camilo; Cardona, Agustin] Corp Geol Ares, Bogota, Colombia. [McFadden, Rory R.] Salem State Univ, Dept Geol Sci, Salem, MA 01970 USA. [Valencia, Victor] Washington State Univ, Sch Earth & Environm Sci, Pullman, WA 99164 USA. RP Whattam, SA (reprint author), Korea Univ, Dept Earth & Environm Sci, Seoul 136701, South Korea. EM whattam@korea.ac.kr OI Ramirez, Diego/0000-0001-6018-3273; Whattam, Scott/0000-0001-9193-9002; Montes, Camilo/0000-0002-3553-0787 FU ACP [SAA-199520-KRP]; U.S. National Science Foundation (NSF) [0966884]; NSF [EAR 0824299] FX This study was made possible by ACP (Panama Canal Authority) contract SAA-199520-KRP and the U.S. National Science Foundation (NSF) grant 0966884 (OISE, EAR, DRL), and Mr. Mark Tupper, NSF EAR 0824299. Access to field areas and collection permits were granted by Ministerio de lndustria y Comercio. Minera Panama is thanked for providing core samples from Petaquilla. Federerico Moreno and the Department of Geological Sciences, University of Florida, are thanked for the CL images. Ed. A.C. Kerr, E. Gazel and an anonymous reviewer are thanked for their detailed and insightful comments. J.K. Kim is acknowledged for insightful comments which improved aspects of data presentation. NR 135 TC 11 Z9 12 U1 0 U2 14 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0024-4937 J9 LITHOS JI Lithos PD JUN PY 2012 VL 142 BP 226 EP 244 DI 10.1016/j.lithos.2012.02.017 PG 19 WC Geochemistry & Geophysics; Mineralogy SC Geochemistry & Geophysics; Mineralogy GA 951MU UT WOS:000304725500015 ER PT J AU Hirsch, BT Visser, MD Kays, R Jansen, PA AF Hirsch, Ben T. Visser, Marco D. Kays, Roland Jansen, Patrick A. TI Quantifying seed dispersal kernels from truncated seed-tracking data SO METHODS IN ECOLOGY AND EVOLUTION LA English DT Article DE censored tail reconstruction; censored tail reconstruction; kernel; long-distance dispersal; seed dispersal; seed tracking; thread tag ID TROPICAL FORESTS; PLANT-POPULATIONS; SPATIAL-PATTERNS; WIND DISPERSAL; RAIN-FOREST; SHADOWS; CONSEQUENCES; RECRUITMENT; DEPENDENCE; BEHAVIOR AB 1. Seed dispersal is a key biological process that remains poorly documented because dispersing seeds are notoriously hard to track. While long-distance dispersal is thought to be particularly important, seed-tracking studies typically yield incomplete data sets that are biased against long-distance movements. 2. We evaluate an analytical procedure developed by Jansen, Bongers & Hemerik (2004) to infer the tail of a seed dispersal kernel from incomplete frequency distributions of dispersal distances obtained by tracking seeds. This censored tail reconstruction (CTR) method treats dispersal distances as waiting times in a survival analysis and censors nonretrieved seeds according to how far they can reliably be tracked. We tested whether CTR can provide unbiased estimates of long-distance movements which typically cannot be tracked with traditional field methods. 3. We used a complete frequency distribution of primary seed dispersal distances of the palm Astrocaryum standleyanum, obtained with telemetric thread tags that allow tracking seeds regardless of the distance moved. We truncated and resampled the data set at various distances, fitted kernel functions on CTR estimates of dispersal distance and determined how well this function approximated the true dispersal kernel. 4. Censored tail reconstruction with truncated data approximated the true dispersal kernel remarkably well but only when the best-fitting function (lognormal) was used. We were able to select the correct function and derive an accurate estimate of the seed dispersal kernel even after censoring 5060% of the dispersal events. However, CTR results were substantially biased if 5% or more of seeds within the search radius were overlooked by field observers and erroneously censored. Similar results were obtained using additional simulated dispersal kernels. 5. Our study suggests that the CTR method can accurately estimate the dispersal kernel from truncated seed-tracking data if the kernel is a simple decay function. This method will improve our understanding of the spatial patterns of seed movement and should replace the usual practice of omitting nonretrieved seeds from analyses in seed-tracking studies. C1 [Hirsch, Ben T.; Kays, Roland] New York State Museum & Sci Serv, Albany, NY 12230 USA. [Hirsch, Ben T.; Visser, Marco D.; Kays, Roland; Jansen, Patrick A.] Smithsonian Trop Res Inst, Unit 9100, DPO, AA 34002 USA. [Visser, Marco D.] Radboud Univ Nijmegen, Dept Expt Plant Ecol, NL-6525 AJ Nijmegen, Netherlands. [Jansen, Patrick A.] Univ Wageningen & Res Ctr, Ctr Ecosyst Studies, NL-6700 AA Wageningen, Netherlands. [Jansen, Patrick A.] Univ Groningen, Community & Conservat Ecol Grp, NL-9700 CC Groningen, Netherlands. RP Hirsch, BT (reprint author), New York State Museum & Sci Serv, 3140 CEC, Albany, NY 12230 USA. EM hirschb@si.edu RI Jansen, Patrick/G-2545-2015 OI Jansen, Patrick/0000-0002-4660-0314 FU National Science Foundation [NSF-DEB 0717071]; Netherlands Organization for Scientific Research [W85-239, 863-07-008]; Smithsonian Tropical Research Institute FX We thank Eelke Jongejans and two anonymous reviewers for valuable comments to an earlier version of the manuscript. This study was supported by funding from the National Science Foundation (NSF-DEB 0717071 to RWK) and the Netherlands Organization for Scientific Research (grants W85-239 and 863-07-008 to P.A.J.). M. D. V. acknowledges funding from the Smithsonian Tropical Research Institute fellowship programme. NR 43 TC 13 Z9 14 U1 5 U2 38 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 2041-210X EI 2041-2096 J9 METHODS ECOL EVOL JI Methods Ecol. Evol. PD JUN PY 2012 VL 3 IS 3 BP 595 EP 602 DI 10.1111/j.2041-210X.2011.00183.x PG 8 WC Ecology SC Environmental Sciences & Ecology GA 953VX UT WOS:000304902500018 ER PT J AU Luna, GJM Diaz, MP Brickhouse, NS Moraes, M AF Luna, G. J. M. Diaz, M. P. Brickhouse, N. S. Moraes, M. TI XMM-Newton EPIC and OM observation of Nova Centauri 1986 (V842 Cen) SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE novae; cataclysmic variables; X-rays: general ID WHITE-DWARF MASSES; CATACLYSMIC VARIABLES; INTERMEDIATE POLARS; RAY OBSERVATIONS; OUTBURSTS; EMISSION; REMNANTS; SPECTRA; MODELS AB We report the results from the temporal and spectral analysis of an XMMNewton observation of Nova Centauri 1986 (V842 Cen). We detect a period at 3.51 +/- 0.4 h in the EPIC data and at 4.0 +/- 0.8 h in the Optical Monitor (OM) data. The X-ray spectrum is consistent with the emission from an absorbed thin thermal plasma with a temperature distribution given by an isobaric cooling flow. The maximum temperature of the cooling flow model is keV. Such a high temperature can be reached in a shocked region and, given the periodicity detected, most likely arises in a magnetically channelled accretion flow characteristic of intermediate polars. The pulsed fraction of the 3.51-h modulation decreases with energy as observed in the X-ray light curves of magnetic cataclysmic variables, possibly due either to occultation of the accretion column by the white dwarf body or phase-dependent to absorption. We do not find the 57-s white dwarf spin period, with a pulse amplitude of 4 mmag, reported by Woudt et al. in either the OM data, which are sensitive to pulse amplitudes ?0.03 mag, or the EPIC data, sensitive to pulse fractions p? 14 +/- 2 per cent. C1 [Luna, G. J. M.] Consejo Nacl Invest Cient & Tecn, IAFE, Caba, Argentina. [Luna, G. J. M.] Inst Ciencias Astron Tierra & Espacio, San Juan, Argentina. [Diaz, M. P.] Univ Sao Paulo, IAG, BR-05508900 Sao Paulo, Brazil. [Brickhouse, N. S.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Luna, GJM (reprint author), Consejo Nacl Invest Cient & Tecn, IAFE, CC67,Suc 28,C1428ZAA, Caba, Argentina. EM gjmluna@iafe.uba.ar RI 7, INCT/H-6207-2013; Astrofisica, Inct/H-9455-2013; diaz, marcos/I-7233-2013; OI Brickhouse, Nancy/0000-0002-8704-4473 FU ESA; NASA FX We acknowledge the anonymous referee for the comments that helped improve the manuscript. We acknowledge Raimundo Lopes de Oliveira for useful tips and discussion about data analysis. This study is based on observations obtained with XMM-Newton, an ESA science mission with instruments and contributions directly funded by ESA member states and NASA. NR 19 TC 1 Z9 1 U1 0 U2 0 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUN PY 2012 VL 423 IS 1 BP L75 EP L78 DI 10.1111/j.1745-3933.2012.01260.x PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 952SU UT WOS:000304813500016 ER PT J AU Marinucci, A Risaliti, G Wang, JF Nardini, E Elvis, M Fabbiano, G Bianchi, S Matt, G AF Marinucci, A. Risaliti, G. Wang, Junfeng Nardini, E. Elvis, M. Fabbiano, G. Bianchi, S. Matt, G. TI The X-ray reflector in NGC 4945: a time- and space-resolved portrait SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE accretion; accretion discs; galaxies: active; galaxies: Seyfert ID XMM-NEWTON; CHANDRA ACIS; NGC-4945; GALAXY; SPECTROSCOPY; RESOLUTION AB We present a time, spectral and imaging analysis of the X-ray reflector in NGC 4945, which reveals its geometrical and physical structure with unprecedented detail. NGC 4945 hosts one of the brightest AGN in the sky above 10 keV, but it is only visible through its reflected/scattered emission below 10 keV, due to absorption by a column density of similar to 4 x 1024 cm-2. A new Suzaku campaign of five observations spanning similar to 6 months, together with past XMMNewton and Chandra observations, shows a remarkable constancy (within <10 per cent) of the reflected component. Instead, Swift-BAT reveals strong intrinsic variability on time-scales longer than 1 yr. Modelling the circumnuclear gas as a thin cylinder with the axis on the plane of the sky, we show that the reflector is at a distance =30-50 pc, well within the imaging capabilities of Chandra at the distance of NGC 49-45 (1 arcsec similar to 18 pc). Accordingly, the Chandra imaging reveals a resolved, flattened, similar to 150 pc long clumpy structure, whose spectrum is fully due to cold reflection of the primary AGN emission. The clumpiness may explain the small covering factor derived from the spectral and variability properties. C1 [Marinucci, A.; Bianchi, S.; Matt, G.] Univ Roma Tre, Dipartimento Fis, I-00146 Rome, Italy. [Marinucci, A.; Risaliti, G.; Wang, Junfeng; Nardini, E.; Elvis, M.; Fabbiano, G.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Risaliti, G.] INAF Osservatorio Astrofis Arcetri, I-50125 Florence, Italy. RP Marinucci, A (reprint author), Univ Roma Tre, Dipartimento Fis, Via Vasca Navale 84, I-00146 Rome, Italy. EM marinucci@fis.uniroma3.it RI Bianchi, Stefano/B-4804-2010; XRAY, SUZAKU/A-1808-2009; OI Bianchi, Stefano/0000-0002-4622-4240; Risaliti, Guido/0000-0002-3556-977X FU NASA [NNX11AC85G, NNX10AF50G, GO8-9101X, GO1-12009X] FX The authors are grateful to the referee for her/his useful comments. AM, GR and EM acknowledge NASA grants NNX11AC85G and NNX10AF50G. JW acknowledges support from NASA grants GO8-9101X and GO1-12009X. NR 19 TC 20 Z9 20 U1 0 U2 1 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0035-8711 EI 1365-2966 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUN PY 2012 VL 423 IS 1 BP L6 EP L10 DI 10.1111/j.1745-3933.2012.01232.x PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 952SU UT WOS:000304813500002 ER PT J AU Bell, JA AF Bell, Joshua A. TI LINES THAT CONNECT: Rethinking Pattern and Mind in the Pacific SO PACIFIC AFFAIRS LA English DT Book Review C1 [Bell, Joshua A.] Smithsonian Inst, Washington, DC 20560 USA. RP Bell, JA (reprint author), Smithsonian Inst, Washington, DC 20560 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU PACIFIC AFFAIRS UNIV BRITISH COLUMBIA PI VANCOUVER PA #164-1855 WEST MALL, VANCOUVER, BC V6T 1Z2, CANADA SN 0030-851X J9 PAC AFF JI Pac. Aff. PD JUN PY 2012 VL 85 IS 2 BP 460 EP 461 PG 2 WC Area Studies SC Area Studies GA 952LE UT WOS:000304793200049 ER PT J AU Peterson, PM Romaschenko, K Snow, N Johnson, G AF Peterson, Paul M. Romaschenko, Konstantin Snow, Neil Johnson, Gabriel TI A molecular phylogeny and classification of Leptochloa (Poaceae: Chloridoideae: Chlorideae) sensu lato and related genera SO ANNALS OF BOTANY LA English DT Article DE Classification; Dinebra; Diplachne; Disakisperma; Drake-brockmania; ITS; Leptochloa; phylogeny; plastid DNA sequences; Poaceae; Trichloris; Trigonochloa ID LENGTH DIFFERENCE TEST; INCONGRUENCE; SEQUENCES; ERAGROSTIDEAE; INFERENCE; MRBAYES; UTILITY; TREES AB Leptochloa (including Diplachne) sensu lato (s.l.) comprises a diverse assemblage of C-4 (NAD-ME and PCK) grasses with approx. 32 annual or perennial species. Evolutionary relationships and a modern classification of Leptochloa spp. based on the study of molecular characters have only been superficially investigated in four species. The goals of this study were to reconstruct the evolutionary history of Leptochloa s.l. with molecular data and broad taxon sampling. A phylogenetic analysis was conducted of 130 species (mostly Chloridoideae), of which 22 are placed in Leptochloa, using five plastid (rpL32-trn-L, ndhA intron, rps16 intron, rps16-trnK and ccsA) and the nuclear ITS 1 and 2 (ribosomal internal transcribed spacer regions) to infer evolutionary relationships and revise the classification. Leptochloa s.l. is polyphyletic and strong support was found for five lineages. Embedded within the Leptochloa sensu stricto (s.s.) clade are two Trichloris spp. and embedded in Dinebra are Drake-brockmania and 19 Leptochloa spp. The molecular results support the dissolution of Leptochloa s.l. into the following five genera: Dinebra with 23 species, Diplachne with two species, Disakisperma with three species, Leptochloa s.s. with five species and a new genus, Trigonochloa, with two species. C1 [Peterson, Paul M.; Romaschenko, Konstantin] Natl Museum Nat Hist, Smithsonian Inst, Dept Bot MRC 166, Washington, DC 20013 USA. [Romaschenko, Konstantin] Bot Inst Barcelona CSIC ICUB, Lab Mol Systemat, Barcelona 08038, Spain. [Snow, Neil] Montana Nat Heritage Program, Helena, MT 59620 USA. [Johnson, Gabriel] Smithsonian Inst, Dept Bot, Suitland, MD 20746 USA. [Johnson, Gabriel] Labs Analyt Biol, Suitland, MD 20746 USA. RP Peterson, PM (reprint author), Natl Museum Nat Hist, Smithsonian Inst, Dept Bot MRC 166, Washington, DC 20013 USA. EM peterson@si.edu RI Romaschenko, Konstantin/K-3096-2014 OI Romaschenko, Konstantin/0000-0002-7248-4193 FU National Geographic Society Committee for Research and Exploration [8087-06]; Smithsonian Institution; Scholarly Studies Program; Research Opportunities; Atherton Seidell Foundation; Biodiversity Surveys and Inventories Program; Small Grants Program; Laboratory of Analytical Biology FX We thank the National Geographic Society Committee for Research and Exploration (Grant No. 8087-06) for field and laboratory support, the Smithsonian Institution's Restricted Endowments Fund, the Scholarly Studies Program, Research Opportunities, Atherton Seidell Foundation, Biodiversity Surveys and Inventories Program, Small Grants Program, and the Laboratory of Analytical Biology, all for financial support. We would also like to acknowledge Lee Weigt, Jeffery Hunt and David Erickson for help in the laboratory; Robert J. Soreng, Jeffery M. Saarela, Gene Rosenberg, Emmet J. Judziewicz, Carol R. Annable and Nancy Refulio Rodriguez for accompanying the first author on numerous field expeditions; Robert J. Soreng for many extended discussions pertinent to the manuscript; and Jeffery M. Saarela and an anonymous reviewer for providing helpful comments on the manuscript. NR 48 TC 17 Z9 22 U1 0 U2 10 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-7364 J9 ANN BOT-LONDON JI Ann. Bot. PD JUN PY 2012 VL 109 IS 7 BP 1317 EP 1329 DI 10.1093/aob/mcs077 PG 13 WC Plant Sciences SC Plant Sciences GA 948WA UT WOS:000304532300011 PM 22628365 ER PT J AU Borda-de-Agua, L Borges, PAV Hubbell, SP Pereira, HM AF Borda-de-Agua, Luis Borges, Paulo A. V. Hubbell, Stephen P. Pereira, Henrique M. TI Spatial scaling of species abundance distributions SO ECOGRAPHY LA English DT Article ID IMAGE-ANALYSIS; NEUTRAL THEORY; GENERAL-THEORY; BIODIVERSITY; MOMENTS; AREA; POPULATION; INVARIANCE; DIVERSITY; PATTERNS AB Species abundance distributions are an essential tool in describing the biodiversity of ecological communities. We now know that their shape changes as a function of the size of area sampled. Here we analyze the scaling properties of species abundance distributions by using the moments of the logarithmically transformed number of individuals. We find that the moments as a function of area size are well fitted by power laws and we use this pattern to estimate the species abundance distribution for areas larger than those sampled. To reconstruct the species abundance distribution from its moments, we use discrete Tchebichef polynomials. We exemplify the method with data on tree and shrub species from a 50 ha plot of tropical rain forest on Barro Colorado Island, Panama. We test the method within the 50 ha plot, and then we extrapolate the species abundance distribution for areas up to 5 km2. Our results project that for areas above 50 ha the species abundance distributions have a bimodal shape with a local maximum occurring for the singleton classes and that this maximum increases with sampled area size. C1 [Borda-de-Agua, Luis; Pereira, Henrique M.] Univ Lisbon, Fac Ciencias, Ctr Biol Ambiental, P-1749016 Lisbon, Portugal. [Pereira, Henrique M.] Inst Super Tecn, Dept Engn Civil & Arquitectura, P-1049001 Lisbon, Portugal. [Borges, Paulo A. V.] Univ Acores, Azorean Biodivers Grp CITA A, P-9700 Angra Do Heroismo, Azores, Portugal. [Hubbell, Stephen P.] Univ Calif Los Angeles, Dept Ecol & Evolutionary Biol, Los Angeles, CA 90095 USA. [Hubbell, Stephen P.] Smithsonian Trop Res Inst, Unit 0948, Ctr Trop Forest Sci, Apo Aa 340020948, Panama. RP Borda-de-Agua, L (reprint author), Univ Lisbon, Fac Ciencias, Ctr Biol Ambiental, P-1749016 Lisbon, Portugal. EM lbagua@gmail.com RI Pereira, Henrique/B-3975-2009; Borges, Paulo/B-2780-2008; Borda-de-Agua, Luis/D-6063-2011 OI Pereira, Henrique/0000-0003-1043-1675; Borges, Paulo/0000-0002-8448-7623; Borda-de-Agua, Luis/0000-0002-0802-6235 FU ABAFOBIO from Fundacao para a Ciencia e Tecnologia, Portugal [PTDC/AMB/73901/2006]; National Science Foundation; Smithsonian Tropical Research Inst. FX We thank B. McGill, and A. L. Sizling for suggestions that substantially improved the manuscript. LBA thanks the Azorean Biodiversity Group for the kind hospitality during his stay at the Univ. of Azores. This work was supported by the ABAFOBIO (PTDC/AMB/73901/2006) grant from Fundacao para a Ciencia e Tecnologia, Portugal. SPH thanks the National Science Foundation, the Smithsonian Tropical Research Inst., and numerous private foundations for support of both his theoretical and empirical work on and off Barro Colorado Island. NR 44 TC 8 Z9 11 U1 3 U2 44 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0906-7590 J9 ECOGRAPHY JI Ecography PD JUN PY 2012 VL 35 IS 6 BP 549 EP 556 DI 10.1111/j.1600-0587.2011.07128.x PG 8 WC Biodiversity Conservation; Ecology SC Biodiversity & Conservation; Environmental Sciences & Ecology GA 952BX UT WOS:000304765800008 ER PT J AU Russell, HR McNamara, BR Sanders, JS Fabian, AC Nulsen, PEJ Canning, REA Baum, SA Donahue, M Edge, AC King, LJ O'Dea, CP AF Russell, H. R. McNamara, B. R. Sanders, J. S. Fabian, A. C. Nulsen, P. E. J. Canning, R. E. A. Baum, S. A. Donahue, M. Edge, A. C. King, L. J. O'Dea, C. P. TI Shock fronts, electron-ion equilibration and intracluster medium transport processes in the merging cluster Abell 2146 SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE galaxies: clusters: individual: Abell 2146; galaxies: clusters: intracluster medium; X-rays: galaxies: clusters ID NONEQUILIBRIUM IONIZATION STATE; FAST MODE SHOCKS; X-RAY; MAGNETIC-FIELD; COLD FRONTS; DARK-MATTER; COLLISIONLESS SHOCKS; INTERGALACTIC MEDIUM; CHANDRA OBSERVATION; THERMAL CONDUCTION AB We present a new 400-ks Chandra X-ray observation of the merging galaxy cluster Abell 2146. This deep observation reveals detailed structure associated with the major merger event including the Mach number M= 2.3 +/- 0.2 bow shock ahead of the dense, ram pressure stripped subcluster core and the first known example of an upstream shock in the intracluster medium (ICM) (M= 1.6 +/- 0.1). By measuring the electron temperature profile behind each shock front, we determine the time-scale for the electron population to thermally equilibrate with the shock-heated ions. We find that the temperature profile behind the bow shock is consistent with the time-scale for Coulomb collisional equilibration and the post-shock temperature is lower than expected for instant shock heating of the electrons. Although like the Bullet cluster the electron temperatures behind the upstream shock front are hotter than expected, favouring the instant heating model, the uncertainty on the temperature values is greater here and there is significant substructure complicating the interpretation. We also measured the width of each shock front and the contact discontinuity on the leading edge of the subcluster core to investigate the suppression of transport processes in the ICM. The upstream shock is similar to 440 kpc in length but appears remarkably narrow over this distance with a best-fitting width of only 6+5-3 kpc compared with the mean free path of 23 +/- 5 kpc. The leading edge of the subcluster core is also narrow with an upper limit on the width of only 2 kpc separating the cool, multiphase gas at 0.52 keV from the shock-heated surrounding ICM at similar to 6 keV. The strong suppression of diffusion and conduction across this edge suggests a magnetic draping layer may have formed around the subcluster core. The deep Chandra observation has also revealed a cool, dense plume of material extending similar to 170 kpc perpendicular to the merger axis, which is likely to be the disrupted remnant of the primary cluster core. This asymmetry in the cluster morphology indicates the merger has a non-zero impact parameter. We suggest that this also explains why the south-western edge of the subcluster core is narrow and stable over similar to 150 kpc in length, but the north-eastern edge is broad and being stripped of material. C1 [Russell, H. R.; McNamara, B. R.] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada. [McNamara, B. R.] Perimeter Inst Theoret Phys, Waterloo, ON, Canada. [McNamara, B. R.; Nulsen, P. E. J.; O'Dea, C. P.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Sanders, J. S.; Fabian, A. C.; Canning, R. E. A.; King, L. J.] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England. [Baum, S. A.] Rochester Inst Technol, Ctr Imaging Sci, Rochester, NY 14623 USA. [Baum, S. A.] Radcliffe Inst Adv Study, Cambridge, MA 02138 USA. [Donahue, M.] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. [Edge, A. C.] Univ Durham, Dept Phys, Durham DH1 3LE, England. [King, L. J.] Univ Texas Dallas, Dept Phys, Richardson, TX 75080 USA. [O'Dea, C. P.] Rochester Inst Technol, Dept Phys, Rochester, NY 14623 USA. RP Russell, HR (reprint author), Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada. EM helen.russell@uwaterloo.ca OI Edge, Alastair/0000-0002-3398-6916; Sanders, Jeremy/0000-0003-2189-4501; Nulsen, Paul/0000-0003-0297-4493 FU Canadian Space Agency; National Aeronautics and Space Administration [16617775, NAS8-03060]; Royal Society; STFC; Radcliffe Institute for Advanced Study at Harvard University FX HRR and BRM acknowledge generous financial support from the Canadian Space Agency Space Science Enhancement Program. HRR also acknowledges support for this work provided by the National Aeronautics and Space Administration through Chandra Award Number 16617775 issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics and Space Administration under contract NAS8-03060. ACF and LJK thank the Royal Society for support. REAC acknowledges funding from the STFC. SAB is supported in part by the Radcliffe Institute for Advanced Study at Harvard University. We thank the reviewer for helpful and constructive comments. We thank Poshak Gandhi and Sakurako Okamoto for help with the Subaru observations of Abell 2146. We thank Eugene Churazov, Roderick Johnstone and Julie Hlavacek-Larrondo for helpful discussions. NR 86 TC 32 Z9 32 U1 0 U2 1 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0035-8711 EI 1365-2966 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUN PY 2012 VL 423 IS 1 BP 236 EP 255 DI 10.1111/j.1365-2966.2012.20808.x PG 20 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 949TP UT WOS:000304599100020 ER PT J AU Hussain, GAJ Brickhouse, NS Dupree, AK Reale, F Favata, F Jardine, MM AF Hussain, G. A. J. Brickhouse, N. S. Dupree, A. K. Reale, F. Favata, F. Jardine, M. M. TI Chandra study of the eclipsing M dwarf binary, YY Gem SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE techniques: spectroscopic; binaries: eclipsing; stars: coronae; stars: flare; stars: magnetic field; X-rays: stars ID X-RAY SPECTROSCOPY; MAIN-SEQUENCE; CORONAL STRUCTURE; STELLAR FLARES; EMISSION; SYSTEM; STARS; LOOPS; DECAY; MASS AB The eclipsing M dwarf binary system, YY Gem, was observed using Chandra covering 140 ks (2Prot) in total, split into two even exposures separated by 0.76 d (0.94 Prot). The system was extremely active: three energetic flares were observed over the course of these observations. The flaring and non-flaring states of the system are analysed in this paper. The activity level increased between the first and second observations even during the quiescent (non-flaring) phases. An analysis of the dynamics of the X-ray-emitting plasma suggests that both components are significantly active. Contemporaneous Ha spectra also suggest that both components show similar levels of activity. The primary star is the likely source of at least two of the flares. From a detailed analysis of the flare emission at the maximum temperature and maximum density with single loop flare models, we find loop lengths of similar to 0.7R*, 1.5R* and 1.8R*. All of these flares are strongly associated with hot (>10 MK) X-ray emission which appears to predominantly trace the orbital motion of the primary star. The two largest flaring loops are similar to the largest sizes reported in other active M stars and span nearly half the interbinary system; this may indicate magnetospheric interaction between the binary star coronae. We discuss the time and spectral resolution requirements that are necessary to recover detailed information about coronal structure from the X-ray spectra in similar cool star systems. C1 [Hussain, G. A. J.] ESO, D-85748 Garching, Germany. [Brickhouse, N. S.; Dupree, A. K.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Reale, F.] Univ Palermo, Dipartimento Fis, I-90134 Palermo, Italy. [Favata, F.] European Space Agcy, F-75015 Paris, France. [Jardine, M. M.] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland. RP Hussain, GAJ (reprint author), ESO, Karl-Schwarzschild-Str 2, D-85748 Garching, Germany. EM ghussain@eso.org OI Brickhouse, Nancy/0000-0002-8704-4473; Reale, Fabio/0000-0002-1820-4824 FU NSF-PREST [AST-0440784]; Agenzia Spaziale Italiana (ASI), ASI-INAF [I/009/10/0]; National Aeronautics and Space Administration through Chandra X-ray Observatory Center [GO6-7012X]; National Aeronautics Space Administration [NAS8-03060] FX The authors would like to thank the referee, John Pye, for his careful reading of the manuscript and helpful comments. This research utilized spectra obtained in service observing mode by Nancy D. Morrison, Erica N. Hesselbach and Gregory B. Thompson at Ritter Observatory with support from the NSF-PREST programme under grant no. AST-0440784. FR acknowledges support from Agenzia Spaziale Italiana (ASI), ASI-INAF Contract I/009/10/0. Support for this work was provided by the National Aeronautics and Space Administration through Chandra Award Number GO6-7012X issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics Space Administration under contract NAS8-03060. This research has made use of software provided by the Chandra X-ray Center (CXC) in the application packages CIAO and SHERPA. NR 35 TC 3 Z9 3 U1 0 U2 1 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUN PY 2012 VL 423 IS 1 BP 493 EP 504 DI 10.1111/j.1365-2966.2012.20894.x PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 949TP UT WOS:000304599100038 ER PT J AU Estrada-Villegas, S McGill, BJ Kalko, EKV AF Estrada-Villegas, Sergio McGill, Brian J. Kalko, Elisabeth K. V. TI Determinants of species evenness in a neotropical bat ensemble SO OIKOS LA English DT Article ID MYOTIS-NIGRICANS; MODEL SELECTION; BODY-MASS; DIVERSITY; RICHNESS; COMMUNITY; ABUNDANCE; FOREST; ECOLOGY; INDEXES AB Evenness is an important property of communities. Species richness alone does not capture the fact that one or a few species may dominate total abundance and biomass of a community. This in turn has important consequences for ecosystem functioning and species interactions. Evenness has been observed to vary systematically along environmental and productivity gradients. However, a truly general theory about which factors control evenness in a community has yet to emerge. Prior research on evenness has suggested that high richness, biomass and abundance should lead to lower community evenness in our study system of bats in Panama. However, only few empirical studies examine the simultaneous effects of species richness, biomass or abundance on evenness. For the first time, we applied path analysis in the study of evenness to tease apart the relative importance and direction (positive or negative) of causality among these three factors. As predicted, we found that evenness decreases with increasing species richness, abundance and biomass. The negative effect of abundance was mediated by the positive joint effect of biomass and richness. The selected models varied in the strength of the correlation between the three variables with evenness but their direction was consistent. Overall, we argue that rarity, high mobility and differences in resource availability at sites with lower environmental stress can explain the negative effects of richness on evenness. C1 [Estrada-Villegas, Sergio] McGill Univ, Dept Biol, Montreal, PQ H3A 1B1, Canada. [Estrada-Villegas, Sergio] Smithsonian Trop Res Inst, Balboa, Ancon, Panama. [McGill, Brian J.] Univ Maine, Sch Biol & Ecol, Orono, ME 04469 USA. [McGill, Brian J.] Univ Maine, Sustainabil Solut Initiat, Orono, ME 04469 USA. RP Estrada-Villegas, S (reprint author), McGill Univ, Dept Biol, 1205 Dr Penfield Ave, Montreal, PQ H3A 1B1, Canada. EM sergio.estradavillegas@mail.mcgill.ca RI McGill, Brian/A-3476-2008 OI McGill, Brian/0000-0002-0850-1913 FU Neotropical Environment Option; Smithsonian Tropical Research Inst.; NSERC FX SEV would like to thank Laura Jara Reyes for her invaluable support throughout the project. Eric Pedersen and Allen Larocque provided great help with path analysis. Julie Messier, Richard Feldman, Peter White and Christoph Meyer provided valuable comments to the manuscript. The discussion and the analysis therein benefitted from very constructive conversations with Andrew Gonzalez. Richard Stevens was very helpful in the latest revision. We thank the Neotropical Environment Option and the Smithsonian Tropical Research Inst. for excellent logistics and funding. We also thank the InterContinental Playa Bonita Resort and Spa for allowing us to work in their property. NSERC provided funding to BJM. This work is dedicated to Prof. Dr. Elisabeth K. V. Kalko. Her humble personality, true friendship, deep love for all natures' wonders, her sense of responsibility and profound interest in tropical community ecology will be greatly missed. Dr. Kalko was affiliated to the Institute of Experimental Ecology, University of Ulm, Germany, and the Smithsonian Tropical Research Institute, Panama. NR 57 TC 5 Z9 5 U1 3 U2 32 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0030-1299 EI 1600-0706 J9 OIKOS JI Oikos PD JUN PY 2012 VL 121 IS 6 BP 927 EP 941 DI 10.1111/j.1600-0706.2011.19837.x PG 15 WC Ecology SC Environmental Sciences & Ecology GA 946XD UT WOS:000304389900014 ER PT J AU Arnoldi, MJ Morphy, H Nzewi, USC Thompson, K Kreamer, CM Ross, DH AF Arnoldi, Mary Jo Morphy, Howard Nzewi, Ugochukwu-Smooth C. Thompson, Krista Kreamer, Christine Mullen Ross, Doran H. TI Ivan Karp (1943-2011) in memoriam SO AFRICAN ARTS LA English DT Biographical-Item C1 [Arnoldi, Mary Jo] Smithsonian Inst, Natl Museum Nat Hist, Dept Anthropol, Washington, DC 20560 USA. [Morphy, Howard] Australian Natl Univ, Res Sch Humanities & Arts, Canberra, ACT 0200, Australia. [Nzewi, Ugochukwu-Smooth C.] Emory Univ, Art Hist Dept, Atlanta, GA 30322 USA. [Thompson, Krista] Northwestern Univ, Art Hist Dept, Evanston, IL 60208 USA. [Kreamer, Christine Mullen] Smithsonian Inst, Natl Museum African Art, Washington, DC 20560 USA. [Ross, Doran H.] UCLA African Studies, Los Angeles, CA USA. RP Arnoldi, MJ (reprint author), Smithsonian Inst, Natl Museum Nat Hist, Dept Anthropol, Washington, DC 20560 USA. EM arnoldim@si.edu; howard.morphy@anu.edu.au; unzewi@emory.edu; krista-thompson@northwestern.edu; kream-erc@si.edu; Center.dross@arts.ucla.edu NR 0 TC 0 Z9 0 U1 0 U2 0 PU MIT PRESS PI CAMBRIDGE PA 55 HAYWARD STREET, CAMBRIDGE, MA 02142 USA SN 0001-9933 J9 AFR ARTS JI Afr. Arts PD SUM PY 2012 VL 45 IS 2 BP 8 EP 11 PG 4 WC Art SC Art GA 942DV UT WOS:000304023500002 ER PT J AU Ackermann, M Ajello, M Ballet, J Barbiellini, G Bastieri, D Bellazzini, R Blandford, RD Bloom, ED Bonamente, E Borgland, AW Bottacini, E Bregeon, J Brigida, M Bruel, P Buehler, R Buson, S Caliandro, GA Cameron, RA Caraveo, PA Casandjian, JM Cavazzuti, E Cecchi, C Charles, E Chekhtman, A Chiang, J Ciprini, S Claus, R Cohen-Tanugi, J Cutini, S D'Ammando, F de Palma, F Dermer, CD Silva, EDE Drell, PS Drlica-Wagner, A Dubois, R Favuzzi, C Fegan, SJ Ferrara, EC Focke, WB Fortin, P Fuhrmann, L Fukazawa, Y Fusco, P Gargano, F Gasparrini, D Gehrels, N Germani, S Giglietto, N Giommi, P Giordano, F Giroletti, M Glanzman, T Godfrey, G Grenier, IA Guiriec, S Hadasch, D Hayashida, M Hughes, RE Itoh, R Johannesson, G Johnson, AS Katagiri, H Kataoka, J Knodlseder, J Kuss, M Lande, J Larsson, S Lee, SH Longo, F Loparco, F Lott, B Lovellette, MN Lubrano, P Madejski, GM Mazziotta, MN McEnery, JE Mehault, J Michelson, PF Mitthumsiri, W Mizuno, T Monte, C Monzani, ME Morselli, A Moskalenko, IV Murgia, S Naumann-Godo, M Nishino, S Norris, JP Nuss, E Ohsugi, T Okumura, A Omodei, N Orlando, E Ozaki, M Paneque, D Panetta, JH Pelassa, V Pesce-Rollins, M Pierbattista, M Piron, F Pivato, G Porter, TA Raino, S Rando, R Rastawicki, D Razzano, M Readhead, A Reimer, A Reimer, O Reyes, LC Richards, JL Sbarra, C Sgro, C Siskind, EJ Spandre, G Spinelli, P Szostek, A Takahashi, H Tanaka, T Thayer, JG Thayer, JB Thompson, DJ Tinivella, M Torres, DF Tosti, G Troja, E Usher, TL Vandenbroucke, J Vasileiou, V Vianello, G Vitale, V Waite, AP Winer, BL Wood, KS Yang, Z Zimmer, S Moderski, R Nalewajko, K Sikora, M Villata, M Raiteri, CM Aller, HD Aller, MF Arkharov, AA Benitez, E Berdyugin, A Blinov, DA Boettcher, M Calle, OJAB Buemi, CS Carosati, D Chen, WP Diltz, C Di Paola, A Dolci, M Efimova, NV Forne, E Gurwell, MA Heidt, J Hiriart, D Jordan, B Kimeridze, G Konstantinova, TS Kopatskaya, EN Koptelova, E Kurtanidze, OM Lahteenmaki, A Larionova, EG Larionova, LV Larionov, VM Leto, P Lindfors, E Lin, HC Morozova, DA Nikolashvili, MG Nilsson, K Oksman, M Roustazadeh, P Sievers, A Sigua, LA Sillanpaa, A Takahashi, T Takalo, LO Tornikoski, M Trigilio, C Troitsky, IS Umana, G Angelakis, E Krichbaum, TP Nestoras, I Riquelme, D Krips, M Trippe, S Arai, A Kawabata, KS Sakimoto, K Sasada, M Sato, S Uemura, M Yamanaka, M Yoshida, M Belloni, T Tagliaferri, G Bonning, EW Isler, J Urry, CM Hoversten, E Falcone, A Pagani, C Stroh, M AF Ackermann, M. Ajello, M. Ballet, J. Barbiellini, G. Bastieri, D. Bellazzini, R. Blandford, R. D. Bloom, E. D. Bonamente, E. Borgland, A. W. Bottacini, E. Bregeon, J. Brigida, M. Bruel, P. Buehler, R. Buson, S. Caliandro, G. A. Cameron, R. A. Caraveo, P. A. Casandjian, J. M. Cavazzuti, E. Cecchi, C. Charles, E. Chekhtman, A. Chiang, J. Ciprini, S. Claus, R. Cohen-Tanugi, J. Cutini, S. D'Ammando, F. de Palma, F. Dermer, C. D. do Couto e Silva, E. Drell, P. S. Drlica-Wagner, A. Dubois, R. Favuzzi, C. Fegan, S. J. Ferrara, E. C. Focke, W. B. Fortin, P. Fuhrmann, L. Fukazawa, Y. Fusco, P. Gargano, F. Gasparrini, D. Gehrels, N. Germani, S. Giglietto, N. Giommi, P. Giordano, F. Giroletti, M. Glanzman, T. Godfrey, G. Grenier, I. A. Guiriec, S. Hadasch, D. Hayashida, M. Hughes, R. E. Itoh, R. Johannesson, G. Johnson, A. S. Katagiri, H. Kataoka, J. Knoedlseder, J. Kuss, M. Lande, J. Larsson, S. Lee, S. -H. Longo, F. Loparco, F. Lott, B. Lovellette, M. N. Lubrano, P. Madejski, G. M. Mazziotta, M. N. McEnery, J. E. Mehault, J. Michelson, P. F. Mitthumsiri, W. Mizuno, T. Monte, C. Monzani, M. E. Morselli, A. Moskalenko, I. V. Murgia, S. Naumann-Godo, M. Nishino, S. Norris, J. P. Nuss, E. Ohsugi, T. Okumura, A. Omodei, N. Orlando, E. Ozaki, M. Paneque, D. Panetta, J. H. Pelassa, V. Pesce-Rollins, M. Pierbattista, M. Piron, F. Pivato, G. Porter, T. A. Raino, S. Rando, R. Rastawicki, D. Razzano, M. Readhead, A. Reimer, A. Reimer, O. Reyes, L. C. Richards, J. L. Sbarra, C. Sgro, C. Siskind, E. J. Spandre, G. Spinelli, P. Szostek, A. Takahashi, H. Tanaka, T. Thayer, J. G. Thayer, J. B. Thompson, D. J. Tinivella, M. Torres, D. F. Tosti, G. Troja, E. Usher, T. L. Vandenbroucke, J. Vasileiou, V. Vianello, G. Vitale, V. Waite, A. P. Winer, B. L. Wood, K. S. Yang, Z. Zimmer, S. Moderski, R. Nalewajko, K. Sikora, M. Villata, M. Raiteri, C. M. Aller, H. D. Aller, M. F. Arkharov, A. A. Benitez, E. Berdyugin, A. Blinov, D. A. Boettcher, M. Calle, O. J. A. Bravo Buemi, C. S. Carosati, D. Chen, W. P. Diltz, C. Di Paola, A. Dolci, M. Efimova, N. V. Forne, E. Gurwell, M. A. Heidt, J. Hiriart, D. Jordan, B. Kimeridze, G. Konstantinova, T. S. Kopatskaya, E. N. Koptelova, E. Kurtanidze, O. M. Lahteenmaki, A. Larionova, E. G. Larionova, L. V. Larionov, V. M. Leto, P. Lindfors, E. Lin, H. C. Morozova, D. A. Nikolashvili, M. G. Nilsson, K. Oksman, M. Roustazadeh, P. Sievers, A. Sigua, L. A. Sillanpaa, A. Takahashi, T. Takalo, L. O. Tornikoski, M. Trigilio, C. Troitsky, I. S. Umana, G. Angelakis, E. Krichbaum, T. P. Nestoras, I. Riquelme, D. Krips, M. Trippe, S. Arai, A. Kawabata, K. S. Sakimoto, K. Sasada, M. Sato, S. Uemura, M. Yamanaka, M. Yoshida, M. Belloni, T. Tagliaferri, G. Bonning, E. W. Isler, J. Urry, C. M. Hoversten, E. Falcone, A. Pagani, C. Stroh, M. CA Fermi-LAT Collaboration GASP-WEBT Consortium F-GAMMA Iram-PdBI Kanata RXTE SMARTS Swift-XRT TI MULTI-WAVELENGTH OBSERVATIONS OF BLAZAR AO 0235+164 IN THE 2008-2009 FLARING STATE SO ASTROPHYSICAL JOURNAL LA English DT Article DE BL Lacertae objects: individual (AO 0235+164); galaxies: active; galaxies: jets; gamma rays: galaxies; radiation mechanisms: non-thermal ID BL-LACERTAE OBJECT; ACTIVE GALACTIC NUCLEI; SOUTHERN SPECTROPHOTOMETRIC STANDARDS; RELATIVISTIC RECONFINEMENT SHOCKS; SPECTRAL ENERGY-DISTRIBUTIONS; LARGE-AREA TELESCOPE; GAMMA-RAY OUTBURST; SOFT-X-RAY; RADIO-SOURCES; ABSORPTION-LINE AB The blazarAO 0235+164 (z=0.94) has been one of the most active objects observed by Fermi Large Area Telescope (LAT) since its launch in Summer 2008. In addition to the continuous coverage by Fermi, contemporaneous observations were carried out from the radio to gamma-ray bands between 2008 September and 2009 February. In this paper, we summarize the rich multi-wavelength data collected during the campaign (including F-GAMMA, GASP-WEBT, Kanata, OVRO, RXTE, SMARTS, Swift, and other instruments), examine the cross-correlation between the light curves measured in the different energy bands, and interpret the resulting spectral energy distributions in the context of well-known blazar emission models. We find that the gamma-ray activity is well correlated with a series of near-IR/optical flares, accompanied by an increase in the optical polarization degree. On the other hand, the X-ray light curve shows a distinct 20 day high state of unusually soft spectrum, which does not match the extrapolation of the optical/UV synchrotron spectrum. We tentatively interpret this feature as the bulk Compton emission by cold electrons contained in the jet, which requires an accretion disk corona with an effective covering factor of 19% at a distance of 100 R-g. 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M.; Nikolashvili, M. G.; Sigua, L. A.] Abastumani Observ, GE-0301 Abastumani, Rep of Georgia. [Koptelova, E.] Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan. [Torres, D. F.; Lahteenmaki, A.; Oksman, M.] Aalto Univ, Metsahovi Radio Observ, FIN-02540 Kylmala, Finland. [Larionov, V. M.] Isaac Newton Inst Chile, St Petersburg Branch, St Petersburg, Russia. [Nilsson, K.] Univ Turku, Finnish Ctr Astron ESO FINCA, FI-21500 Piikio, Finland. [Sievers, A.; Riquelme, D.] Inst Radio Astron Millimetr, Granada 18012, Spain. [Krips, M.] Domaine Univ, Inst Radio Astron Millimetr, F-38406 St Martin Dheres, France. [Trippe, S.] Seoul Natl Univ, Dept Phys & Astron, Seoul 151742, South Korea. [Arai, A.] Kyoto Univ, Grad Sch Sci, Dept Phys, Kyoto, Japan. [Sato, S.] Nagoya Univ, Dept Phys & Astrophys, Chikusa Ku, Nagoya, Aichi 4648602, Japan. [Belloni, T.; Tagliaferri, G.] INAF Osservatorio Astron Brera, I-23807 Merate, Italy. [Bonning, E. W.; Isler, J.; Urry, C. M.] Yale Univ, Dept Astron, Dept Phys, New Haven, CT 06520 USA. [Bonning, E. W.; Isler, J.; Urry, C. M.] Yale Univ, Yale Ctr Astron & Astrophys, New Haven, CT 06520 USA. [Hoversten, E.; Falcone, A.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA. [Pagani, C.] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England. RP Ackermann, M (reprint author), Deutsch Elektronen Synchrotron DESY, D-15738 Zeuthen, Germany. EM eduardo@slac.stanford.edu; fabio.gargano@ba.infn.it; madejski@slac.stanford.edu; silvia.raino@ba.infn.it; lreyes04@calpoly.edu; knalew@colorado.edu; sikora@camk.edu.pl RI Urry, Claudia/G-7381-2011; Lahteenmaki, Anne/L-5987-2013; Kurtanidze, Omar/J-6237-2014; Morozova, Daria/H-1298-2013; Troitskiy, Ivan/K-7979-2013; Grishina, Tatiana/H-6873-2013; Johannesson, Gudlaugur/O-8741-2015; Loparco, Francesco/O-8847-2015; Gargano, Fabio/O-8934-2015; Moskalenko, Igor/A-1301-2007; Mazziotta, Mario /O-8867-2015; Sgro, Carmelo/K-3395-2016; Torres, Diego/O-9422-2016; lubrano, pasquale/F-7269-2012; Morselli, Aldo/G-6769-2011; Kuss, Michael/H-8959-2012; giglietto, nicola/I-8951-2012; Reimer, Olaf/A-3117-2013; Tosti, Gino/E-9976-2013; Larionov, Valeri/H-1349-2013; Kopatskaya, Evgenia/H-4720-2013; Larionova, Elena/H-7287-2013; Efimova, Natalia/I-2196-2013; Blinov, Dmitry/G-9925-2013; Ozaki, Masanobu/K-1165-2013; Rando, Riccardo/M-7179-2013; Orlando, E/R-5594-2016; OI Urry, Claudia/0000-0002-0745-9792; Morozova, Daria/0000-0002-9407-7804; Troitskiy, Ivan/0000-0002-4218-0148; Grishina, Tatiana/0000-0002-3953-6676; Johannesson, Gudlaugur/0000-0003-1458-7036; Loparco, Francesco/0000-0002-1173-5673; Gargano, Fabio/0000-0002-5055-6395; Moskalenko, Igor/0000-0001-6141-458X; Mazziotta, Mario /0000-0001-9325-4672; Torres, Diego/0000-0002-1522-9065; lubrano, pasquale/0000-0003-0221-4806; Morselli, Aldo/0000-0002-7704-9553; giglietto, nicola/0000-0002-9021-2888; Reimer, Olaf/0000-0001-6953-1385; Larionov, Valeri/0000-0002-4640-4356; Kopatskaya, Evgenia/0000-0001-9518-337X; Larionova, Elena/0000-0002-2471-6500; Efimova, Natalia/0000-0002-8071-4753; Blinov, Dmitry/0000-0003-0611-5784; Dolci, Mauro/0000-0001-8000-5642; Buemi, Carla Simona/0000-0002-7288-4613; Villata, Massimo/0000-0003-1743-6946; Larionova, Liudmila/0000-0002-0274-1481; giommi, paolo/0000-0002-2265-5003; Umana, Grazia/0000-0002-6972-8388; Caraveo, Patrizia/0000-0003-2478-8018; Leto, Paolo/0000-0003-4864-2806; Sgro', Carmelo/0000-0001-5676-6214; SPINELLI, Paolo/0000-0001-6688-8864; Rando, Riccardo/0000-0001-6992-818X; Raiteri, Claudia Maria/0000-0003-1784-2784; Sasada, Mahito/0000-0001-5946-9960; Bastieri, Denis/0000-0002-6954-8862; Omodei, Nicola/0000-0002-5448-7577; Pesce-Rollins, Melissa/0000-0003-1790-8018; Giroletti, Marcello/0000-0002-8657-8852; Angelakis, Emmanouil/0000-0001-7327-5441; Cutini, Sara/0000-0002-1271-2924; Gasparrini, Dario/0000-0002-5064-9495; Tagliaferri, Gianpiero/0000-0003-0121-0723 FU National Aeronautics and Space Administration [NNX10AJ70G]; Department of Energy in the United States; Commissariat a l'Energie Atomique; Centre National de la Recherche Scientifique/Institut National de Physique Nucleaire et de Physique des Particules in France; Agenzia Spaziale Italiana; Istituto Nazionale di Fisica Nucleare in Italy; Ministry of Education, Culture, Sports, Science and Technology (MEXT); High Energy Accelerator Research Organization (KEK); Japan Aerospace Exploration Agency (JAXA) in Japan; K. A. Wallenberg Foundation; Swedish Research Council; Swedish National Space Board in Sweden; Istituto Nazionale di Astrofisica in Italy; Centre National d'Etudes Spatiales in France; Polish MNiSW [N N203 301635]; Kavli Institute for Cosmological Physics at the University of Chicago [NSF PHY-0114422, NSF PHY-0551142]; Georgian National Science Foundation [GNSF/ST08/4-404]; Academy of Finland [212656, 210338, 121148]; Smithsonian Institution; Academia Sinica; Fermi GI [011283, 31155, NNX10AP16G, NNX11AO13G]; Fermi Guest Investigator [NNX08AW56G, NNX09AU10G]; University of Michigan; [AST-0607523] FX The Fermi LAT Collaboration acknowledges generous ongoing support from a number of agencies and institutes that have supported both the development and the operation of the LAT as well as scientific data analysis. These include the National Aeronautics and Space Administration and the Department of Energy in the United States, the Commissariat a l'Energie Atomique and the Centre National de la Recherche Scientifique/Institut National de Physique Nucleaire et de Physique des Particules in France, the Agenzia Spaziale Italiana and the Istituto Nazionale di Fisica Nucleare in Italy, the Ministry of Education, Culture, Sports, Science and Technology (MEXT), High Energy Accelerator Research Organization (KEK) and Japan Aerospace Exploration Agency (JAXA) in Japan, and the K. A. Wallenberg Foundation, the Swedish Research Council and the Swedish National Space Board in Sweden.; Additional support for science analysis during the operations phase is gratefully acknowledged from the Istituto Nazionale di Astrofisica in Italy and the Centre National d'Etudes Spatiales in France.; We acknowledge the support by the Polish MNiSW grant N N203 301635.; L. C. Reyes acknowledges support from NASA through Swift Guest Investigator Grant NNX10AJ70G; as well as support by the Kavli Institute for Cosmological Physics at the University of Chicago through grants NSF PHY-0114422 and NSF PHY-0551142 and an endowment from the Kavli Foundation and its founder Fred Kavli.; The Abastumani team acknowledges financial support by the Georgian National Science Foundation through grant GNSF/ST08/4-404.; The Metsahovi team acknowledges the support from the Academy of Finland to our observing projects (numbers 212656, 210338, 121148, and others).; The Submillimeter Array is a joint project between the Smithsonian Astrophysical Observatory and the Academia Sinica Institute of Astronomy and Astrophysics and is funded by the Smithsonian Institution and the Academia Sinica.; The acquisition and analysis of the SMARTS data are supported by Fermi GI grants 011283 and 31155 (PI:C. Bailyn).; Data from the Steward Observatory spectropolarimetric monitoring project were used. This program is supported by Fermi Guest Investigator grants NNX08AW56G and NNX09AU10G.; UMRAO research is supported by a series of grants from the NSF and NASA, most recently AST-0607523 and Fermi GI grants NNX10AP16G and NNX11AO13G, respectively; funds for telescope operation are provided by the University of Michigan. NR 112 TC 25 Z9 25 U1 0 U2 17 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 2012 VL 751 IS 2 AR 159 DI 10.1088/0004-637X/751/2/159 PG 20 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 944LU UT WOS:000304204600080 ER PT J AU Bietenholz, MF Brunthaler, A Soderberg, AM Krauss, M Zauderer, B Bartel, N Chomiuk, L Rupen, MP AF Bietenholz, M. F. Brunthaler, A. Soderberg, A. M. Krauss, M. Zauderer, B. Bartel, N. Chomiuk, L. Rupen, M. P. TI VLBI OBSERVATIONS OF THE NEARBY TYPE IIb SUPERNOVA 2011dh SO ASTROPHYSICAL JOURNAL LA English DT Article DE radio continuum: general; supernovae: individual (SN 2011dh) ID SN 1993J VLBI; ANISOTROPIC EXPANSION; RADIO SUPERNOVAE; SPIRAL GALAXIES; SN-1993J VLBI; PROGENITOR; COMPACT; M51; EVOLUTION; SHELL AB We report on phase-referenced very long baseline interferometry radio observations of the Type IIb supernova 2011dh, at times t = 83 days and 179 days after the explosion and at frequencies, respectively, of 22.2 and 8.4 GHz. We detected SN 2011dh at both epochs. At the first epoch only an upper limit on SN 2011dh's angular size was obtained, but at the second epoch, we determine the angular radius of SN 2011dh's radio emission to be 0.25 +/- 0.08 mas by fitting a spherical shell model directly to the visibility measurements. At a distance of 8.4 Mpc, this angular radius corresponds to a time-averaged (since t = 0) expansion velocity of the forward shock of 21,000 +/- 7000 km s(-1). Our measured values of the radius of the emission region are in excellent agreement with those derived from fitting synchrotron self-absorbed models to the radio spectral energy distribution, providing strong confirmation for the latter method of estimating the radius. We find that SN 2011dh's radius evolves in a power-law fashion, with R proportional to t(0.92+/-0.10). C1 [Bietenholz, M. F.] Hartebeesthoek Radio Observ, ZA-1740 Krugersdorp, South Africa. [Bietenholz, M. F.; Bartel, N.] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada. [Brunthaler, A.] Max Planck Inst Radioastron, D-53121 Bonn, Germany. [Brunthaler, A.; Krauss, M.; Chomiuk, L.; Rupen, M. P.] Natl Radio Astron Observ, Socorro, NM 87801 USA. [Soderberg, A. M.; Zauderer, B.; Chomiuk, L.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Bietenholz, MF (reprint author), Hartebeesthoek Radio Observ, POB 443, ZA-1740 Krugersdorp, South Africa. FU NSERC; European Union [275596] FX Research at York University was partly supported by NSERC. A. B. was supported by a Marie Curie Outgoing International Fellowship (FP7) of the European Union (project number 275596). L. C. is a Jansky Fellow at the NRAO. We thank NRAO for scheduling these target-of-opportunity observations. Our results are partly based on observations with the 100 m telescope of the MPIfR (Max-Planck-Institut fur Radioastronomie) at Effelsberg. We made use of the Swinburne University of Technology software correlator, developed as part of the Australian Major National Research Facilities Programme and operated under license. In addition, we also made use of NASA's Astrophysics Data System Bibliographic Services. NR 41 TC 17 Z9 17 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 2012 VL 751 IS 2 AR 125 DI 10.1088/0004-637X/751/2/125 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 944LU UT WOS:000304204600046 ER PT J AU Chaty, S Rahoui, F AF Chaty, S. Rahoui, F. TI BROADBAND ESO/VISIR-SPITZER INFRARED SPECTROSCOPY OF THE OBSCURED SUPERGIANT X-RAY BINARY IGR J16318-4848 SO ASTROPHYSICAL JOURNAL LA English DT Article DE circumstellar matter; infrared: stars; stars: emission-line, Be; stars: winds, outflows; X-rays: binaries; X-rays: individual (IGR J16318-4848) ID MULTIWAVELENGTH OBSERVATIONS; CIRCUMSTELLAR DISKS; COMPANION STAR; DUST GRAINS; GX 301-2; MU-M; EXTINCTION; SPECTRA; HOLE AB A new class of X-ray binaries has recently been discovered by the high-energy observatory INTEGRAL. It is composed of intrinsically obscured supergiant high-mass X-ray binaries, unveiled by means of multi-wavelength X-ray, optical, near-and mid-infrared observations, in particular, photometric and spectroscopic observations using ESO facilities. However, the fundamental questions about these intriguing sources, namely, their formation, evolution, and the nature of their environment, are still unsolved. Among them, IGR J16318-4848, a compact object orbiting around a supergiant B[e] star, seems to be one of the most extraordinary celestial sources of our Galaxy. We present here new ESO/Very Large Telescope (VLT) VISIR mid-infrared (MIR) spectroscopic observations of this source. First, line diagnostics allow us to confirm the presence of absorbing material (dust and cold gas) enshrouding the whole binary system, and to characterize the nature of this material. Second, by fitting broadband near-to mid-infrared spectral energy distribution, including ESONTT/SofI, VLT/VISIR, and Spitzer data, with a phenomenological model for sgB[e] stars, we show that the star is surrounded by an irradiated rim heated to a temperature of similar to 3800-5500 K, along with a viscous disk component at an inner temperature of similar to 750 K. VISIR data allow us to exclude the spherical geometry for the dust component. This detailed study will allow us in the future to get better constraints on the formation and evolution of such rare and short-living high-mass X-ray binary systems in our Galaxy. C1 [Chaty, S.; Rahoui, F.] Univ Paris Diderot, AIM, UMR E 9005, CEA,DSM,CNRS,Irfu,Serv Astrophys,Ctr Saclay, FR-91191 Gif Sur Yvette, France. [Rahoui, F.] Harvard Univ, Dept Astron, Cambridge, MA 02138 USA. [Rahoui, F.] Harvard Univ, Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Chaty, S (reprint author), Univ Paris Diderot, AIM, UMR E 9005, CEA,DSM,CNRS,Irfu,Serv Astrophys,Ctr Saclay, FR-91191 Gif Sur Yvette, France. EM sylvain.chaty@cea.fr; frahoui@cfa.harvard.edu OI Chaty, Sylvain/0000-0002-5769-8601 FU Centre National d'Etudes Spatiales (CNES); [079.D-0454] FX S.C. thanks the ESO staff who were very helpful during visitor observations, Peter A. Curran for a careful rereading of the paper and useful comments, and finally the anonymous referee for constructive comments on this paper. IRAF is distributed by the National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy (AURA) under cooperative agreement with the National Science Foundation. This research has made use of NASA's Astrophysics Data System Bibliographic Services. This work was supported by the Centre National d'Etudes Spatiales (CNES). It is based on observations obtained with MINE: the Multi-wavelength INTEGRAL NEtwork. This work is also based on observations made with ESO Telescopes at the La Silla or Paranal Observatories under the program ID 079.D-0454. NR 33 TC 14 Z9 14 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 2012 VL 751 IS 2 AR 150 DI 10.1088/0004-637X/751/2/150 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 944LU UT WOS:000304204600071 ER PT J AU Chen, XP Arce, HG Dunham, MM Zhang, QZ Bourke, TL Launhardt, R Schmalzl, M Henning, T AF Chen, Xuepeng Arce, Hector G. Dunham, Michael M. Zhang, Qizhou Bourke, Tyler L. Launhardt, Ralf Schmalzl, Markus Henning, Thomas TI SUBMILLIMETER ARRAY AND SPITZER OBSERVATIONS OF BOK GLOBULE CB 17: A CANDIDATE FIRST HYDROSTATIC CORE? SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM: clouds; ISM: individual objects (CB 17, L1389); ISM: jets and outflows; stars: formation ID TRANSLUCENT MOLECULAR CLOUDS; LOW-MASS PROTOSTARS; STAR-FORMATION; DENSE CORES; BIPOLAR FLOWS; PROTOSTELLAR CORES; LINE FORMATION; DARK CLOUDS; EVOLUTION; OUTFLOWS AB We present high angular resolution Submillimeter Array (SMA) and Spitzer observations toward the Bok globule CB 17. SMA 1.3 mm dust continuum images reveal within CB 17 two sources with an angular separation of similar to 21 '' (similar to 5250 AU at a distance of similar to 250 pc). The northwestern continuum source, referred to as CB 17 IRS, dominates the infrared emission in the Spitzer images, drives a bipolar outflow extending in the northwest-southeast direction, and is classified as a low-luminosity Class 0/I transition object (L-bol similar to 0.5 L-circle dot). The southeastern continuum source, referred to as CB 17 MMS, has faint dust continuum emission in the SMA 1.3 mm observations (similar to 6 sigma detection; similar to 3.8 mJy), but is not detected in the deep Spitzer infrared images at wavelengths from 3.6 to 70 mu m. Its bolometric luminosity and temperature, estimated from its spectral energy distribution, are <= 0.04 L-circle dot and <= 16 K, respectively. The SMA CO (2-1) observations suggest that CB 17 MMS may drive a low-velocity molecular outflow (similar to 2.5 km s(-1)), extending in the east-west direction. Comparisons with prestellar cores and Class 0 protostars suggest that CB 17 MMS is more evolved than prestellar cores but less evolved than Class 0 protostars. The observed characteristics of CB 17 MMS are consistent with the theoretical predictions from radiative/magnetohydrodynamical simulations of a first hydrostatic core, but there is also the possibility that CB 17 MMS is an extremely low luminosity protostar deeply embedded in an edge-on circumstellar disk. Further observations are needed to study the properties of CB 17 MMS and to address more precisely its evolutionary stage. C1 [Chen, Xuepeng; Arce, Hector G.; Dunham, Michael M.] Yale Univ, Dept Astron, New Haven, CT 06520 USA. [Zhang, Qizhou; Bourke, Tyler L.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Launhardt, Ralf; Schmalzl, Markus; Henning, Thomas] Max Planck Inst Astron, D-69117 Heidelberg, Germany. [Schmalzl, Markus] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands. RP Chen, XP (reprint author), Yale Univ, Dept Astron, Box 208101, New Haven, CT 06520 USA. EM xuepeng.chen@yale.edu OI Zhang, Qizhou/0000-0003-2384-6589 FU Smithsonian Institution; Academia Sinica; National Science Foundation [0845619, 0708158] FX The Submillimeter Array is a joint project between the Smithsonian Astrophysical Observatory and the Academia Sinica Institute of Astronomy and Astrophysics and is funded by the Smithsonian Institution and the Academia Sinica.; We thank the SMA staff for technical support during the observations and the Spitzer Science Center for their maintenance of the Spitzer data. This material is based on work supported by NSF grant AST-0845619 to H.G.A. This research is supported in part by the National Science Foundation under grant number 0708158 (T.L.B.). NR 60 TC 29 Z9 29 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 2012 VL 751 IS 2 AR 89 DI 10.1088/0004-637X/751/2/89 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 944LU UT WOS:000304204600010 ER PT J AU Fang, GW Kong, X Chen, Y Lin, XB AF Fang, Guanwen Kong, Xu Chen, Yang Lin, Xuanbin TI PASSIVE AND STAR-FORMING GALAXIES AT 1.4 <= z <= 2.5 IN THE AEGIS FIELD SO ASTROPHYSICAL JOURNAL LA English DT Article DE cosmology: observations; galaxies: evolution; galaxies: formation; galaxies: high-redshift; galaxies: photometry ID EXTENDED GROTH STRIP; EXTRAGALACTIC LEGACY SURVEY; NEAR-INFRARED SPECTROSCOPY; ACTIVE GALACTIC NUCLEI; STELLAR MASS FUNCTION; EXTREMELY RED OBJECTS; K-SELECTED GALAXIES; WIDE AREA SURVEY; HIGH-REDSHIFT; QUIESCENT GALAXIES AB Using a simple two-color selection based on g-, z-, and K-band photometry, we choose from 1609 star-forming galaxies (sgzKs) and 422 passively evolving galaxies (pgzKs) at z similar to 2 from a K-band-selected sample (K-AB < 22.0) in an area of similar to 0.44 deg(2) of the All-wavelength Extended Groth Strip International Survey. The number of counts of pgzKs in our sample turn over at K-AB similar to 21.0, and both the number of faint and bright objects (including sgzKs and pgzKs) exceed the predictions of a recent semi-analytic model of galaxy formation; a more successful model is need to explain this diversity. We also find that the star formation rate (SFR) and specific SFR (sSFR) of sgzKs increases with redshift at all masses, implying that star-forming galaxies were much more active on average in the past. Moreover, the sSFR of massive galaxies is lower at all redshifts, suggesting that star formation contributes more to the mass growth of low-mass galaxies than to high-mass galaxies. From the Hubble Space Telescope Wide Field Camera 3 near-infrared imaging data we find that morphologies of z similar to 2 galaxies not only have diffuse structures with lower G and higher M-20 values, but also have single-object morphologies (higher G and lower M20), implying that there are morphological variety and different formation process for these galaxies at z similar to 2. Finally, we also study the fraction of active galactic nuclei (AGNs) in the gzKs, 82 of 828 gzKs with four IRAC bands can be classified as AGNs (similar to 10%). Most of these AGN candidates have L0.5-10 keV > 10(41) erg s(-1). C1 [Fang, Guanwen; Kong, Xu; Chen, Yang; Lin, Xuanbin] Univ Sci & Technol China, Ctr Astrophys, Hefei 230026, Peoples R China. [Fang, Guanwen] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Fang, Guanwen; Kong, Xu] Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China. [Kong, Xu; Lin, Xuanbin] Chinese Acad Sci, USTC, Key Lab Res Galaxies & Cosmol, Hefei 230026, Peoples R China. RP Fang, GW (reprint author), Univ Sci & Technol China, Ctr Astrophys, Hefei 230026, Peoples R China. EM wen@mail.ustc.edu.cn; xkong@ustc.edu.cn RI Chen, Yang/O-7911-2014 OI Chen, Yang/0000-0002-3759-1487 FU NSF; NASA [NAS5-26555]; STFC; National Natural Science Foundation of China (NSFC) [10873012]; Key Laboratory for the Structure and Evolution of Celestial Objects, CAS; Chinese Universities Scientific Fund (CUSF) FX We thank the anonymous referee for valuable comments and suggestions that have improved the paper. We thank J.-S. Huang and H. J. McCracken for helpful suggestions and discussions. This study makes use of data from AEGIS, a multi-wavelength sky survey conducted with the Chandra, GALEX, Hubble, Keck, CFHT, MMT, Subaru, Palomar, Spitzer, VLA, and other telescopes and supported in part by the NSF, NASA, and the STFC. This work is also based on observations taken by the CANDELS Multi-Cycle Treasury Program with the NASA/ESA HST, which is operated by the Association of Universities for Research in Astronomy, Inc., under the NASA contract NAS5-26555. The work is supported by the National Natural Science Foundation of China (NSFC, No. 10873012), the Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects, CAS, and Chinese Universities Scientific Fund (CUSF). NR 90 TC 11 Z9 14 U1 0 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 2012 VL 751 IS 2 AR 109 DI 10.1088/0004-637X/751/2/109 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 944LU UT WOS:000304204600030 ER PT J AU Ganeshalingam, M Li, WD Filippenko, AV Silverman, JM Chornock, R Foley, RJ Matheson, T Kirshner, RP Milne, P Calkins, M Shen, KJ AF Ganeshalingam, Mohan Li, Weidong Filippenko, Alexei V. Silverman, Jeffrey M. Chornock, Ryan Foley, Ryan J. Matheson, Thomas Kirshner, Robert P. Milne, Peter Calkins, Mike Shen, Ken J. TI THE LOW-VELOCITY, RAPIDLY FADING TYPE Ia SUPERNOVA 2002es SO ASTROPHYSICAL JOURNAL LA English DT Article DE supernovae: general; supernovae: individual (SN 2002es, SN 1999bh) ID AUTOMATIC IMAGING TELESCOPE; PHOTOMETRIC STANDARD STARS; DARK-ENERGY CONSTRAINTS; DIGITAL SKY SURVEY; LIGHT CURVES; HOST GALAXIES; IMPROVED DISTANCES; CELESTIAL EQUATOR; LOW-LUMINOSITY; CORE-COLLAPSE AB SN 2002es is a peculiar subluminous Type Ia supernova (SN Ia) with a combination of observed characteristics never before seen in an SN Ia. At maximum light, SN 2002es shares spectroscopic properties with the underluminous SN 1991bg subclass of SNe Ia, but with substantially lower expansion velocities(similar to 6000 km s(-1)) more typical of the peculiar SN 2002cx subclass. Photometrically, SN 2002es differs from both SN 1991bg-like and SN 2002cx-like supernovae. Although at maximum light it is subluminous (M-B = -17.78 mag), SN 2002es has a relatively broad light curve (Delta m(15)(B) = 1.28 +/- 0.04 mag), making it a significant outlier in the light-curve width versus luminosity relationship. We estimate a Ni-56 mass of 0.17 +/- 0.05 M-circle dot synthesized in the explosion, relatively low for an SN Ia. One month after maximum light, we find an unexpected plummet in the bolometric luminosity. The late-time decay of the light curves is inconsistent with our estimated Ni-56 mass, indicating that either the light curve was not completely powered by Ni-56 decay or the ejecta became optically thin to gamma-rays within a month after maximum light. The host galaxy is classified as an S0 galaxy with little to no star formation, indicating that the progenitor of SN 2002es is likely from an old stellar population. We also present a less extensive data set for SN 1999bh, an object which shares similar photometric and spectroscopic properties. Both objects were found as part of the Lick Observatory Supernova Search, allowing us to estimate that these objects should account for 2.5% of SNe Ia within a fixed volume. Current theoretical models are unable to explain the observed characteristics of SN 2002es. C1 [Ganeshalingam, Mohan; Li, Weidong; Filippenko, Alexei V.; Silverman, Jeffrey M.; Shen, Ken J.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Chornock, Ryan; Foley, Ryan J.; Kirshner, Robert P.; Calkins, Mike] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Matheson, Thomas] Natl Opt Astron Observ, Tucson, AZ 85719 USA. [Milne, Peter] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. [Shen, Ken J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Ganeshalingam, M (reprint author), Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA. EM mganesh@astro.berkeley.edu FU U.S. National Science Foundation (NSF) [AST-0607485, AST-0908886]; TABASGO Foundation; U.S. Department of Energy SciDAC [DE-FC02-06ER41453]; NSF [AST-0907903]; W. M. Keck Foundation; U.S. Department of Energy [DE-FG02-08ER41563]; NASA FX The research of A.V.F.'s supernova group at UC Berkeley has been generously supported by the U.S. National Science Foundation (NSF; most recently through grants AST-0607485 and AST-0908886), the TABASGO Foundation, U.S. Department of Energy SciDAC grant DE-FC02-06ER41453, and U.S. Department of Energy grant DE-FG02-08ER41563. KAIT and its ongoing operation were made possible by donations from Sun Microsystems, Inc., the Hewlett-Packard Company, AutoScope Corporation, Lick Observatory, the NSF, the University of California, the Sylvia & Jim Katzman Foundation, the Richard and Rhoda Goldman Fund, and the TABASGO Foundation. Supernova research at Harvard is supported in part by NSF grant AST-0907903. Some of the data presented in this paper were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration (NASA); the observatory was made possible by the generous financial support of the W. M. Keck Foundation. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community; we are most fortunate to have the opportunity to conduct observations from this mountain. We made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with NASA. NR 124 TC 20 Z9 20 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 2012 VL 751 IS 2 AR 142 DI 10.1088/0004-637X/751/2/142 PG 18 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 944LU UT WOS:000304204600063 ER PT J AU Harris, RJ Andrews, SM Wilner, DJ Kraus, AL AF Harris, Robert J. Andrews, Sean M. Wilner, David J. Kraus, Adam L. TI A RESOLVED CENSUS OF MILLIMETER EMISSION FROM TAURUS MULTIPLE STAR SYSTEMS SO ASTROPHYSICAL JOURNAL LA English DT Article DE binaries: general; protoplanetary disks; stars: formation ID SOLAR-TYPE STARS; SUBMILLIMETER CONTINUUM FLUX; CIRCUMSTELLAR DUST DISKS; MAIN-SEQUENCE STARS; CLOSE BINARY STARS; T-TAURI; YOUNG BINARIES; FORMING REGIONS; PROTOPLANETARY DISK; VLBA DETERMINATION AB We present a high angular resolution millimeter-wave dust continuum imaging survey of circumstellar material associated with the individual components of 23 multiple star systems in the Taurus-Auriga young cluster. Combined with previous measurements in the literature, these new data permit a comprehensive look at how the millimeter luminosity (a rough tracer of disk mass) relates to the separation and mass of a stellar companion. Approximately one-third (28%-37%) of the individual stars in multiple systems have detectable millimeter emission, an incidence rate half that for single stars (similar to 62%) which does not depend on the number of companions. There is a strong, positive correlation between the luminosity and projected separation (a(p)) of a stellar pair. Wide pairs (a(p) > 300 AU) have a similar luminosity distribution as single stars, medium pairs (a(p) approximate to 30-300 AU) are a factor of five fainter, and close pairs (a(p) < 30 AU) are similar to 5x fainter yet (aside from a small, but notable population of bright circumbinary disks). In most cases, the emission is dominated by a disk around the primary (or a wide tertiary in hierarchical triples), but there is no clear relationship between luminosity and stellar mass ratio. A direct comparison of resolved disk sizes with predictions from tidal truncation models yields mixed results; some disks are much larger than expected given the projected distances of their companions. We suggest that the presence of a stellar companion impacts disk properties at a level comparable to the internal evolution mechanisms that operate in an isolated system, with both the multiple star formation process itself and star-disk tidal interactions likely playing important roles in the evolution of circumstellar material. From the perspective of the mass content of the disk reservoir, we expect that (giant) planet formation is inhibited around the components of close pairs or secondaries, but should be as likely as for single stars around the primaries (or wide tertiaries in hierarchical triples) in more widely separated multiple star systems. C1 [Harris, Robert J.; Andrews, Sean M.; Wilner, David J.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Kraus, Adam L.] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA. RP Harris, RJ (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. FU Smithsonian Institution; Academia Sinica FX We are grateful to Trent Dupuy for his assistance with the probabilistic treatment of projected orbits, to Joanna Brown for kindly providing some supplementary observing time on the FQ Tau binary, and to an anonymous referee for helpful suggestions on clarifying the draft manuscript. The Submillimeter Array (SMA) is a joint project between the Smithsonian Astrophysical Observatory and the Academia Sinica Institute of Astronomy and Astrophysics and is funded by the Smithsonian Institution and the Academia Sinica. NR 99 TC 58 Z9 58 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 2012 VL 751 IS 2 AR 115 DI 10.1088/0004-637X/751/2/115 PG 20 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 944LU UT WOS:000304204600036 ER PT J AU Johnson, RE Zuhone, J Jones, C Forman, WR Markevitch, M AF Johnson, Ryan E. Zuhone, John Jones, Christine Forman, William R. Markevitch, Maxim TI SLOSHING GAS IN THE CORE OF THE MOST LUMINOUS GALAXY CLUSTER RXJ1347.5-1145 SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: clusters: general; galaxies: interactions; X-rays: galaxies: clusters ID SUNYAEV-ZELDOVICH MAP; X-RAY-CLUSTER; RX J1347.5-1145; COLD FRONTS; CHANDRA OBSERVATION; DARK-MATTER; XMM-NEWTON; J1347-1145; MASS; CONSTRAINTS AB We present new constraints on the merger history of the most X-ray luminous cluster of galaxies, RXJ1347.5-1145, based on its unique multiwavelength morphology. Our X-ray analysis confirms that the core gas is undergoing "sloshing" resulting from a prior, large-scale, gravitational perturbation. In combination with multiwavelength observations, the sloshing gas points to the primary and secondary clusters having had at least two prior strong gravitational interactions. The evidence supports a model in which the secondary subcluster with mass M = 4.8 +/- 2.4 x 10(14) M-circle dot has previously (greater than or similar to 0.6 Gyr ago) passed by the primary cluster, and has now returned for a subsequent crossing where the subcluster's gas has been completely stripped from its dark matter halo. RXJ1347 is a prime example of how core gas sloshing may be used to constrain the merger histories of galaxy clusters through multiwavelength analyses. C1 [Johnson, Ryan E.] Denison Univ, Dept Phys & Astron, Granville, OH 43023 USA. [Johnson, Ryan E.; Zuhone, John; Jones, Christine; Forman, William R.; Markevitch, Maxim] Harvard Smithsonian Ctr Astrophys, Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. [Zuhone, John; Markevitch, Maxim] NASA, Goddard Space Flight Ctr, Astrophys Sci Div, High Energy Astrophys Lab, Greenbelt, MD 20771 USA. RP Johnson, RE (reprint author), Denison Univ, Dept Phys & Astron, Granville, OH 43023 USA. EM johnsonr@denison.edu; jzuhone@cfa.harvard.edu; cjf@cfa.harvard.edu; wrf@cfa.harvard.edu; maxim@head.cfa.harvard.edu OI Forman, William/0000-0002-9478-1682 FU NASA; ASC/Alliance Center for Astrophysical Thermonuclear Flashes at the University of Chicago; SAO; CFD; Chandra grant [GO8-9128X] FX This research has made extensive use of SAOImager DS9, in addition to software provided by the CXC in the application packages CIAO, ChIPS, and Sherpa. This research has made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with NASA. The simulation software used in this work was in part developed by the DOE-supported ASC/Alliance Center for Astrophysical Thermonuclear Flashes at the University of Chicago. R.E.J. was supported by an SAO predoctoral fellowship and a CFD fellowship during this work. J.A.Z. was supported by Chandra grant GO8-9128X, as well as by an appointment to the NASA Postdoctoral Program at the Goddard Space Flight Center, administered by Oak Ridge Associated Universities through a contract with NASA. NR 47 TC 10 Z9 10 U1 0 U2 7 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 2012 VL 751 IS 2 AR 95 DI 10.1088/0004-637X/751/2/95 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 944LU UT WOS:000304204600016 ER PT J AU Kilic, M Brown, WR Prieto, CA Kenyon, SJ Heinke, CO Agueros, MA Kleinman, SJ AF Kilic, Mukremin Brown, Warren R. Allende Prieto, Carlos Kenyon, S. J. Heinke, Craig O. Agueeros, M. A. Kleinman, S. J. TI THE ELM SURVEY. IV. 24 WHITE DWARF MERGER SYSTEMS SO ASTROPHYSICAL JOURNAL LA English DT Article DE binaries: close; Galaxy: stellar content; gravitational waves; supernovae: general; white dwarfs ID EXTREMELY LOW-MASS; DIGITAL SKY SURVEY; DOUBLE DEGENERATE SYSTEM; BINARY NLTT 11748; AM CVN STARS; SURFACE DETONATIONS; COMPACT OBJECTS; SDSS 1257+5428; NEUTRON-STAR; SPY PROJECT AB We present new radial velocity and X-ray observations of extremely low mass (ELM, similar to 0.2M(circle dot)) white dwarf (WD) candidates in the Sloan Digital Sky Survey Data Release 7 area. We identify seven new binary systems with 1-18 hr orbital periods. Five of the systems will merge due to gravitational wave radiation within 10 Gyr, bringing the total number of merger systems found in the ELM Survey to 24. The ELM Survey has now quintupled the known merger WD population. It has also discovered the eight shortest period detached binary WD systems currently known. We discuss the characteristics of the merger and non-merger systems observed in the ELM Survey, including their future evolution. About half of the systems have extreme mass ratios. These are the progenitors of the AM Canum Venaticorum systems and Type Ia supernovae. The remaining targets will lead to the formation of extreme helium stars, subdwarfs, or massive WDs. We identify three targets that are excellent gravitational wave sources. These should be detected by the Laser Interferometer Space Antenna like missions within the first year of operation. The remaining targets are important indicators of what the Galactic foreground may look like for gravitational wave observatories. C1 [Kilic, Mukremin] Univ Oklahoma, Homer L Dodge Dept Phys & Astron, Norman, OK 73019 USA. [Brown, Warren R.; Kenyon, S. J.] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. [Allende Prieto, Carlos] Inst Astrofis Canarias, E-38205 Tenerife, Spain. [Allende Prieto, Carlos] Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain. [Heinke, Craig O.] Univ Alberta, Dept Phys, Edmonton, AB T6G 2E1, Canada. [Agueeros, M. A.] Columbia Univ, Dept Astron, New York, NY 10027 USA. [Kleinman, S. J.] Gemini Observ, Hilo, HI 96720 USA. RP Kilic, M (reprint author), Univ Oklahoma, Homer L Dodge Dept Phys & Astron, 440 W Brooks St, Norman, OK 73019 USA. EM kilic@ou.edu RI Agueros, Marcel/K-7998-2014; OI Agueros, Marcel/0000-0001-7077-3664; Kenyon, Scott/0000-0003-0214-609X; Heinke, Craig/0000-0003-3944-6109 FU NSERC; Ingenuity New Faculty Award; Chandra [GO1-12019X] FX We thank M. Alegria, J. McAfee, A. Milone, and J. DiMiceli for their assistance with observations at the MMT Observatory. C.O.H. is supported by NSERC and an Ingenuity New Faculty Award. M.A.A. gratefully acknowledges Chandra grant GO1-12019X for support of portions of this program. NR 65 TC 62 Z9 62 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 2012 VL 751 IS 2 AR 141 DI 10.1088/0004-637X/751/2/141 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 944LU UT WOS:000304204600062 ER PT J AU Margutti, R Soderberg, AM Chomiuk, L Chevalier, R Hurley, K Milisavljevic, D Foley, RJ Hughes, JP Slane, P Fransson, C Moe, M Barthelmy, S Boynton, W Briggs, M Connaughton, V Costa, E Cummings, J Del Monte, E Enos, H Fellows, C Feroci, M Fukazawa, Y Gehrels, N Goldsten, J Golovin, D Hanabata, Y Harshman, K Krimm, H Litvak, ML Makishima, K Marisaldi, M Mitrofanov, IG Murakami, T Ohno, M Palmer, DM Sanin, AB Starr, R Svinkin, D Takahashi, T Tashiro, M Terada, Y Yamaoka, K AF Margutti, R. Soderberg, A. M. Chomiuk, L. Chevalier, R. Hurley, K. Milisavljevic, D. Foley, R. J. Hughes, J. P. Slane, P. Fransson, C. Moe, M. Barthelmy, S. Boynton, W. Briggs, M. Connaughton, V. Costa, E. Cummings, J. Del Monte, E. Enos, H. Fellows, C. Feroci, M. Fukazawa, Y. Gehrels, N. Goldsten, J. Golovin, D. Hanabata, Y. Harshman, K. Krimm, H. Litvak, M. L. Makishima, K. Marisaldi, M. Mitrofanov, I. G. Murakami, T. Ohno, M. Palmer, D. M. Sanin, A. B. Starr, R. Svinkin, D. Takahashi, T. Tashiro, M. Terada, Y. Yamaoka, K. TI INVERSE COMPTON X-RAY EMISSION FROM SUPERNOVAE WITH COMPACT PROGENITORS: APPLICATION TO SN2011fe SO ASTROPHYSICAL JOURNAL LA English DT Article DE radiation mechanisms: non-thermal; supernovae: individual (SN2011fe) ID SWIFT ULTRAVIOLET/OPTICAL TELESCOPE; SYMBIOTIC-STAR PROGENITOR; WHITE-DWARF MODELS; IA SUPERNOVAE; RADIO-EMISSION; LIGHT CURVES; SN 2011FE; CIRCUMSTELLAR MATERIAL; SODIUM-ABSORPTION; BURST AFTERGLOWS AB We present a generalized analytic formalism for the inverse Compton X-ray emission from hydrogen-poor supernovae and apply this framework to SN 2011fe using Swift X-Ray Telescope (XRT), UVOT, and Chandra observations. We characterize the optical properties of SN 2011fe in the Swift bands and find them to be broadly consistent with a "normal" SN Ia, however, no X-ray source is detected by either XRT or Chandra. We constrain the progenitor system mass-loss rate (M) over dot < 2 x 10(-9) M-circle dot yr(-1) (3 sigma c.l.) for wind velocity v(w) = 100 km s(-1). Our result rules out symbiotic binary progenitors for SN 2011fe and argues against Roche lobe overflowing subgiants and main-sequence secondary stars if greater than or similar to 1% of the transferred mass is lost at the Lagrangian points. Regardless of the density profile, the X-ray non-detections are suggestive of a clean environment (n(CSM) < 150 cm(-3)) for 2 x 10(15) less than or similar to R less than or similar to 5 x 10(16) cm around the progenitor site. This is either consistent with the bulk of material being confined within the binary system or with a significant delay between mass loss and supernova explosion. We furthermore combine X-ray and radio limits from Chomiuk et al. to constrain the post-shock energy density in magnetic fields. Finally, we searched for the shock breakout pulse using gamma-ray observations from the Interplanetary Network and find no compelling evidence for a supernova-associated burst. Based on the compact radius of the progenitor star we estimate that the shock breakout pulse was likely not detectable by current satellites. C1 [Margutti, R.; Soderberg, A. M.; Chomiuk, L.; Milisavljevic, D.; Foley, R. J.; Slane, P.; Moe, M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Chomiuk, L.] Natl Radio Astron Observ, Socorro, NM 87801 USA. [Chevalier, R.] Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA. [Hurley, K.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA. [Hughes, J. P.] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA. [Fransson, C.] Stockholm Univ, Dept Astron, SE-10691 Stockholm, Sweden. [Barthelmy, S.; Cummings, J.; Gehrels, N.; Krimm, H.; Starr, R.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Boynton, W.; Enos, H.; Fellows, C.; Harshman, K.] Univ Arizona, Dept Planetary Sci, Tucson, AZ 85721 USA. [Briggs, M.; Connaughton, V.] Univ Alabama, Dept Phys, Huntsville, AL 35809 USA. [Costa, E.; Del Monte, E.; Feroci, M.] INAF IASF Roma, I-00133 Rome, Italy. [Fukazawa, Y.; Hanabata, Y.; Ohno, M.; Takahashi, T.] Hiroshima Univ, Dept Phys, Hiroshima 7398526, Japan. [Goldsten, J.] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA. [Golovin, D.; Litvak, M. L.; Mitrofanov, I. G.; Murakami, T.; Sanin, A. B.] Moscow Space Res Inst, Moscow 117997, Russia. [Makishima, K.] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan. [Marisaldi, M.] INAF IASF Bologna, I-40129 Bologna, Italy. [Palmer, D. M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Svinkin, D.] Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia. [Tashiro, M.; Terada, Y.] Saitama Univ, Dept Phys, Sakura Ku, Saitama 3388570, Japan. [Yamaoka, K.] Aoyama Gakuin Univ, Dept Math & Phys, Sagamihara, Kanagawa 2298558, Japan. RP Margutti, R (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. RI Tashiro, Makoto/J-4562-2012; Terada, Yukikatsu/A-5879-2013; Svinkin, Dmitry/C-1934-2014; OI Terada, Yukikatsu/0000-0002-2359-1857; Feroci, Marco/0000-0002-7617-3421; Costa, Enrico/0000-0003-4925-8523; Marisaldi, Martino/0000-0002-4000-3789 FU Clay Fellowship; NASA [NNX10AR12G, NNX12AD68G, NNX07AR71G, NNX10AU34G, NAS8-03060]; Russian Space Agency; RFBR [11-02-12082-ofi_m] FX We thank Harvey Tananbaum and Neil Gehrels for making Chandra and Swift observations possible. We thank Re'em Sari, Bob Kirshner, Sayan Chakraborti, Stephan Immler, Brosk Russell, and Rodolfo Barniol Duran for helpful discussions. L. C. is a Jansky Fellow of the National Radio Astronomy Observatory. R.J.F. is supported by a Clay Fellowship. K.H. is grateful for IPN support under the following NASA grants: NNX10AR12G (Suzaku), NNX12AD68G (Swift), NNX07AR71G (MESSENGER), and NNX10AU34G (Fermi). The Konus-Wind experiment is supported by a Russian Space Agency contract and RFBR Grant 11-02-12082-ofi_m. P.O.S. acknowledges partial support from NASA Contract NAS8-03060. NR 79 TC 49 Z9 49 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 2012 VL 751 IS 2 AR 134 DI 10.1088/0004-637X/751/2/134 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 944LU UT WOS:000304204600055 ER PT J AU Perets, HB Subr, L AF Perets, Hagai B. Subr, Ladislav TI THE PROPERTIES OF DYNAMICALLY EJECTED RUNAWAY AND HYPER-RUNAWAY STARS SO ASTROPHYSICAL JOURNAL LA English DT Article DE binaries: general; stars: kinematics and dynamics; stars: peculiar; stars: statistics ID HYPERVELOCITY STARS; GALACTIC-CENTER; BLACK-HOLE; INITIAL BINARIES; MASSIVE STARS; B-STARS; O STARS; ORIGIN; CLUSTERS; VELOCITY AB Runaway stars are stars observed to have large peculiar velocities. Two mechanisms are thought to contribute to the ejection of runaway stars, both of which involve binarity (or higher multiplicity). In the binary supernova scenario, a runaway star receives its velocity when its binary massive companion explodes as a supernova (SN). In the alternative dynamical ejection scenario, runaway stars are formed through gravitational interactions between stars and binaries in dense, compact clusters or cluster cores. Here we study the ejection scenario. We make use of extensive N-body simulations of massive clusters, as well as analytic arguments, in order to characterize the expected ejection velocity distribution of runaway stars. We find that the ejection velocity distribution of the fastest runaways (upsilon greater than or similar to 80 km s(-1)) depends on the binary distribution in the cluster, consistent with our analytic toy model, whereas the distribution of lower velocity runaways appears independent of the binaries' properties. For a realistic log constant distribution of binary separations, we find the velocity distribution to follow a simple power law: Gamma(upsilon) alpha v(-8/3) for the high-velocity runaways and upsilon(-3/2) for the low-velocity ones. We calculate the total expected ejection rates of runaway stars from our simulated massive clusters and explore their mass function and their binarity. The mass function of runaway stars is biased toward high masses and strongly depends on their velocity. The binarity of runaways is a decreasing function of their ejection velocity, with no binaries expected to be ejected with upsilon > 150 km s(-1). We also find that hyper-runaways with velocities of hundreds of km s(-1) can be dynamically ejected from stellar clusters, but only at very low rates, which cannot account for a significant fraction of the observed population of hyper-velocity stars in the Galactic halo. C1 [Perets, Hagai B.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Subr, Ladislav] Charles Univ Prague, Fac Math & Phys, Astron Inst, CR-18000 Prague, Czech Republic. RP Perets, HB (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. RI Perets, Hagai/K-9605-2015 OI Perets, Hagai/0000-0002-5004-199X FU Czech Science Foundation [GACR-202/09/0772]; Czech Ministry of Education [MSM0021620860] FX H.B.P. is a CfA and BIKURA (FIRST) prize fellow. L.S. acknowledges the support of the Czech Science Foundation via grant GACR-202/09/0772 and from the Research Program MSM0021620860 of the Czech Ministry of Education. NR 45 TC 26 Z9 26 U1 2 U2 9 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 2012 VL 751 IS 2 AR 133 DI 10.1088/0004-637X/751/2/133 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 944LU UT WOS:000304204600054 ER PT J AU Starikova, S Berta, S Franceschini, A Marchetti, L Rodighiero, G Vaccari, M Vikhlinin, A AF Starikova, S. Berta, S. Franceschini, A. Marchetti, L. Rodighiero, G. Vaccari, M. Vikhlinin, A. TI CLUSTERING OF STAR-FORMING GALAXIES DETECTED IN MID-INFRARED WITH THE SPITZER WIDE-AREA SURVEY SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: evolution; infrared: galaxies; large-scale structure of universe ID ACTIVE GALACTIC NUCLEI; SIMILAR-TO 2; ULTRALUMINOUS INFRARED GALAXIES; DUST-OBSCURED GALAXIES; LYMAN-BREAK GALAXIES; OBSERVATIONS COSMOLOGICAL INTERPRETATION; 2-POINT CORRELATION-FUNCTION; ANGULAR-CORRELATION FUNCTION; HIGH-REDSHIFT GALAXIES; DARK-MATTER HALOES AB We discuss the clustering properties of galaxies with signs of ongoing star formation detected by the Spitzer Space Telescope at the 24 mu m band in the SWIRE Lockman Hole field. The sample of mid-IR-selected galaxies includes similar to 20,000 objects detected above a flux threshold of S-24 mu m = 310 mu Jy. We adopt optical/near-IR color selection criteria to split the sample into the lower-redshift and higher-redshift galaxy populations. We measure the angular correlation function on scales of theta = 0 degrees.01-3 degrees.5, from which, using the Limber inversion along with the redshift distribution established for similarly selected source populations in the GOODS fields (Rodighiero et al.), we obtain comoving correlation lengths of r(0) = 4.98 +/- 0.28 h(-1) Mpc and r(0) = 8.04 +/- 0.69 h(-1) Mpc for the low-z (z(mean) = 0.7) and high-z (z(mean) = 1.7) subsamples, respectively. Comparing these measurements with the correlation functions of dark matter (DM) halos identified in the Bolshoi cosmological simulation, we find that the high-redshift objects reside in progressively more massive halos reaching M-tot greater than or similar to 3 x 10(12) h(-1) M-circle dot, compared to M-tot greater than or similar to 7 x 10(11) h(-1) M-circle dot for the low-redshift population. Approximate estimates of the IR luminosities based on the catalogs of 24 mu m sources in the GOODS fields show that our high-z subsample represents a population of "distant ULIRGs" with L-IR > 10(12) L-circle dot, while the low-z subsample mainly consists of "LIRGs," L-IR similar to 10(11) L-circle dot. The comparison of number density of the 24 mu m selected galaxies and of DM halos with derived minimum mass M-tot shows that only 20% of such halos may host star-forming galaxies. C1 [Starikova, S.; Vikhlinin, A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Starikova, S.; Franceschini, A.; Marchetti, L.; Rodighiero, G.; Vaccari, M.] Univ Padua, Dipartimento Astron, I-35122 Padua, Italy. [Berta, S.] Max Planck Inst Extraterr Phys MPE, D-85741 Garching, Germany. [Vaccari, M.] Univ Western Cape, Dept Phys, Astrophys Grp, ZA-7535 Cape Town, South Africa. [Vikhlinin, A.] Space Res Inst IKI, Moscow, Russia. RP Starikova, S (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. RI Vaccari, Mattia/R-3431-2016; OI Vaccari, Mattia/0000-0002-6748-0577; Marchetti, Lucia/0000-0003-3948-7621; Rodighiero, Giulia/0000-0002-9415-2296 FU Smithsonian Grand Challenges Consortia FX We are grateful to A. Klypin for letting us use the outputs of the Bolshoi cosmological simulations. We thank C. Jones for careful reading of the manuscript and useful comments. S. S. was supported by the Smithsonian Grand Challenges Consortia. NR 101 TC 8 Z9 8 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 2012 VL 751 IS 2 AR 126 DI 10.1088/0004-637X/751/2/126 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 944LU UT WOS:000304204600047 ER PT J AU Tang, SM Grindlay, JE Moe, M Orosz, JA Kurucz, RL Quinn, SN Servillat, M AF Tang, Sumin Grindlay, Jonathan E. Moe, Maxwell Orosz, Jerome A. Kurucz, Robert L. Quinn, Samuel N. Servillat, Mathieu TI DASCH DISCOVERY OF A POSSIBLE NOVA-LIKE OUTBURST IN A PECULIAR SYMBIOTIC BINARY SO ASTROPHYSICAL JOURNAL LA English DT Article DE binaries: symbiotic; novae, cataclysmic variables ID ACCRETING WHITE-DWARFS; LIGHT-CURVE; X-RAY; STARS; EVOLUTION; CATALOG; SPECTROGRAPH; PROGENITORS; COMPONENTS; TELESCOPE AB We present photometric and spectroscopic observations of a peculiar variable (designated DASCH J075731.1+201735 or J0757) discovered from our DASCH project using the digitized Harvard College Observatory archival photographic plates. It brightened by about 1.5 mag in B within a year starting in 1942, and then slowly faded back to its pre-outburst brightness from 1943 to 1950s. The mean brightness level was stable before and after the outburst, and ellipsoidal variations with a period of P = 119.18 +/- 0.07 days are seen, suggesting that the star is tidally distorted. Radial-velocity measurements indicate that the orbit is nearly circular (e = 0.02 +/- 0.01) with a spectroscopic period that is the same as the photometric period. The binary consists of a 1.1 +/- 0.3 M-circle dot M0III star, and a 0.6 +/- 0.2 M-circle dot companion, very likely a white dwarf (WD). Unlike other symbiotic binaries, there is no sign of emission lines or a stellar wind in the spectra. With an outburst timescale of similar to 10 years and estimated B-band peak luminosity M-B similar to 0.7, J0757 is different from any other known classic or symbiotic novae. The most probable explanation of the outburst is hydrogen shell burning on the WD, although an accretion-powered flare cannot be ruled out. C1 [Tang, Sumin; Grindlay, Jonathan E.; Moe, Maxwell; Kurucz, Robert L.; Quinn, Samuel N.; Servillat, Mathieu] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Orosz, Jerome A.] San Diego State Univ, Dept Astron, San Diego, CA 92182 USA. RP Tang, SM (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM stang@cfa.harvard.edu FU Smithsonian Astrophysical Observatory; NSF [AST0407380, AST0909073]; Cornel and Cynthia K. Sarosdy Fund for DASCH FX We thank the anonymous referee for helpful comments. We are grateful to Alison Doane, Jaime Pepper, Edward Los, Robert J. Simcoe and David Sliski at CfA for their work on DASCH, and many volunteers who have helped digitize logbooks, clean, and scan plates (http://hea-www.harvard.edu/DASCH/team.php); and David Latham for his generous help on getting TRES spectra and data reduction. We thank Sumner Starrfield, Joanna Mikolajewska, Scott Kenyon, Mariko Kato, Lars Bildsten, Tony Piro, Sterl Phinney, Ken Shen, Maureen van den Berg, Rosanne Di Stefano, Jing Luan, and Perry Berlind for helpful discussions. S. T. thanks the FLWO staff and many visiting astronomers who acquired the TRES and FAST spectra; Andrea Dupree and Anna Frebel for the help on obtaining and reducing the MIKE spectra; Jessica Mink and Bill Wyatt for the initial reduction of the TRES and FAST spectra. This paper uses data products produced by the OIR Telescope Data Center, supported by the Smithsonian Astrophysical Observatory. This research has made use of the GSC 2.3.2, 2MASS, SDSS, and GALEX catalogs, HEASARC, NASA/IPAC Infrared Science Archive, and the ASAS database. This work was supported in part by the NSF grants AST0407380 and AST0909073 and now also the Cornel and Cynthia K. Sarosdy Fund for DASCH. NR 55 TC 4 Z9 4 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 2012 VL 751 IS 2 AR 99 DI 10.1088/0004-637X/751/2/99 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 944LU UT WOS:000304204600020 ER PT J AU van Kempen, TA Longmore, SN Johnstone, D Pillai, T Fuente, A AF van Kempen, T. A. Longmore, S. N. Johnstone, D. Pillai, T. Fuente, A. TI THE SMALL-SCALE PHYSICAL STRUCTURE AND FRAGMENTATION DIFFERENCE OF TWO EMBEDDED INTERMEDIATE-MASS PROTOSTARS IN ORION SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM: kinematics and dynamics; stars: formation; submillimeter: ISM; techniques: interferometric ID YOUNG STELLAR OBJECTS; STAR-FORMING REGIONS; SUBMILLIMETER CONTINUUM OBSERVATIONS; SPECTRAL ENERGY-DISTRIBUTIONS; HERSCHEL-PACS SPECTROSCOPY; MOLECULAR CLOUD CORES; INFRARED-DARK CLOUDS; HOT CORE; PROTOSTELLAR CORES; RADIATION FEEDBACK AB Intermediate-mass (IM) protostars, the bridge between the very common solar-like protostars and the more massive, but rarer, O and B stars, can only be studied at high physical spatial resolutions in a handful of clouds. In this paper, we present and analyze the continuum results from an observing campaign at the Submillimeter Array (SMA) targeting two well-studied IM protostars in Orion, NGC 2071 and L1641 S3 MMS 1. The extended SMA (eSMA) probes structure at angular resolutions up to 0.'' 2, revealing protostellar disks on scales of similar to 200 AU. Continuum flux measurements on these scales indicate that a significant amount of mass, a few tens of M-circle dot, is present. Envelope, stellar, and disk masses are derived using compact, extended, and eSMA configurations and compared against spectral energy distribution fitting models. We hypothesize that fragmentation into three components occurred within NGC 2071 at an early time, when the envelopes were less than 10% of their current masses, e.g., <0.5 M-circle dot. No fragmentation occurred for L1641 S3 MMS 1. For NGC 2071, evidence is given that the bulk of the envelope material currently around each source was accreted after the initial fragmentation. In addition, about 30% of the total core mass is not yet associated to one of the three sources. A global accretion model is favored and a potential accretion history of NGC 2071 is presented. It is shown that the relatively low level of fragmentation in NGC 2071 was stifled compared to the expected fragmentation from a Jeans argument. Similarly, the lack of fragmentation in L1641 S3 MMS 1 is likely due to similar arguments. C1 [van Kempen, T. A.] Joint ALMA Off, Santiago, Chile. [van Kempen, T. A.] Leiden Univ, Leiden Observ, NL-2333 CA Leiden, Netherlands. [van Kempen, T. A.; Longmore, S. N.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Longmore, S. N.] European So Observ, D-85748 Garching, Germany. [Johnstone, D.] Natl Res Council Canada, Herzberg Inst Astron, Victoria, BC, Canada. [Johnstone, D.] Univ Victoria, Dept Phys & Astron, Victoria, BC V8P 5C2, Canada. [Pillai, T.] CALTECH, Pasadena, CA 91125 USA. [Fuente, A.] OAN, E-28803 Madrid, Spain. RP van Kempen, TA (reprint author), Joint ALMA Off, Alonso de Cordova 3107, Santiago, Chile. EM tkempen@alma.cl RI Fuente, Asuncion/G-1468-2016 OI Fuente, Asuncion/0000-0001-6317-6343 FU Smithsonian Institution; Academia Sinica; SMA; Submillimeter Array; NOVA (Nederlandse Onderzoeksschool Voor Astronomie); NSERC; Combined Array for Research in Millimeter-wave Astronomy (CARMA); National Science Foundation [AST 05-40399] FX The Submillimeter Array is a joint project between the Smithsonian Astrophysical Observatory and the Academia Sinica Institute of Astronomy and Astrophysics and is funded by the Smithsonian Institution and the Academia Sinica.; T.v.K. and S.L. were supported as SMA postdoctoral fellows at the Harvard-Smithsonian Center for Astrophysics (CfA) and are grateful to the Submillimeter Array for funding their research. T.v.K.'s current research is supported by NOVA (Nederlandse Onderzoeksschool Voor Astronomie). T.v.K. is also grateful for the facilities at the Joint ALMA Observatories during his association. D.J. acknowledges the support from an NSERC Discovery Grant. T.P. acknowledges support from the Combined Array for Research in Millimeter-wave Astronomy (CARMA), which is supported by the National Science Foundation through grant AST 05-40399. The anonymous referee is thanked for the critical useful positive read-through of the paper. Mark Gurwell, Ken Young (Taco), and David Wilner of the CfA are thanked for track-sharing eSMA observations on short notice. Taco and Remo Tilanus are thanked for their efforts on the eSMA and assistance with data reduction. We are grateful to the other members in the WISH intermediate mass team (Lars Kristensen, Mike Fich, and Carolyn McCoey in particular) for supplying necessary information on the sources and general discussions. Last but not least, we express our appreciation for the help of Tom Megeath by sharing the reduced Spitzer photometry and images on Orion before publication. NR 92 TC 10 Z9 10 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 2012 VL 751 IS 2 AR 137 DI 10.1088/0004-637X/751/2/137 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 944LU UT WOS:000304204600058 ER PT J AU Watson, LC Martini, P Lisenfeld, U Wong, MH Boker, T Schinnerer, E AF Watson, Linda C. Martini, Paul Lisenfeld, Ute Wong, Man-Hong Boker, Torsten Schinnerer, Eva TI PROPERTIES OF BULGELESS DISK GALAXIES. II. STAR FORMATION AS A FUNCTION OF CIRCULAR VELOCITY SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: ISM; galaxies: spiral; galaxies: star formation; radio lines: galaxies ID MASS-METALLICITY RELATION; STELLAR POPULATION SYNTHESIS; SPITZER-SPACE-TELESCOPE; INFRARED ARRAY CAMERA; ON SPIRAL GALAXIES; FORMATION LAW; FORMING GALAXIES; NEARBY GALAXIES; H-ALPHA; MOLECULAR GAS AB We study the relation between the surface density of gas and star formation rate in 20 moderately inclined, bulgeless disk galaxies (Sd-Sdm Hubble types) using CO(1-0) data from the IRAM 30 m telescope, Hi emission line data from the VLA/EVLA, H alpha data from the MDM Observatory, and polycyclic aromatic hydrocarbon emission data derived from Spitzer IRAC observations. We specifically investigate the efficiency of star formation as a function of circular velocity (v(circ)). Previous work found that the vertical dust structure and disk stability of edge-on, bulgeless disk galaxies transition from diffuse dust lanes with large scale heights and gravitationally stable disks at v(circ) < 120 km s(-1) (M-* less than or similar to 10(10) M-circle dot) to narrow dust lanes with small scale heights and gravitationally unstable disks at v(circ) > 120 km s(-1). We find no transition in star formation efficiency (Sigma(SFR)/Sigma(H) (I+H2)) at v(circ) = 120 km s(-1) or at any other circular velocity probed by our sample (v(circ) = 46-190 km s(-1)). Contrary to previous work, we find no transition in disk stability at any circular velocity in our sample. Assuming our sample has the same dust structure transition as the edge-on sample, our results demonstrate that scale height differences in the cold interstellar medium of bulgeless disk galaxies do not significantly affect the molecular fraction or star formation efficiency. This may indicate that star formation is primarily affected by physical processes that act on smaller scales than the dust scale height, which lends support to local star formation models. C1 [Watson, Linda C.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Watson, Linda C.; Martini, Paul; Wong, Man-Hong] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA. [Martini, Paul] Ohio State Univ, Ctr Cosmol & AstroParticle Phys, Columbus, OH 43210 USA. [Lisenfeld, Ute] Univ Granada, Dept Fis Teor & Cosmos, E-18071 Granada, Spain. [Wong, Man-Hong] Univ Illinois, Dept Phys, Urbana, IL 61801 USA. [Boker, Torsten] European Space Agcy, NL-2200 AG Noordwijk, Netherlands. [Schinnerer, Eva] Max Planck Inst Astron, D-69117 Heidelberg, Germany. RP Watson, LC (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM lwatson@cfa.harvard.edu RI Lisenfeld, Ute/A-1637-2015; OI Lisenfeld, Ute/0000-0002-9471-5423; Schinnerer, Eva/0000-0002-3933-7677 FU NSF [AST-0705170]; Ohio State University; Spanish Ministerio de Ciencia y Educacion [AYA2007-67625-C02-02, AYA2011-24728]; Junta de Andalucia; NASA through JPL/Caltech; National Aeronautics and Space Administration FX We thank Frank Bigiel for providing us with his data. We are also grateful to Todd A. Thompson for helpful comments and discussion, Richard W. Pogge for supplying the narrowband filters used in the Ha observations, Roberto J. Assef, David W. Atlee, and Katharine J. Schlesinger for obtaining some of the H alpha observations, and the referee for comments that improved this work. L. C. W. gratefully acknowledges support from an NSF Graduate Research Fellowship and an Ohio State University Distinguished University Fellowship. P. M. is grateful for support from the NSF via award AST-0705170. U. L. acknowledges financial support from the research projects AYA2007-67625-C02-02 and AYA2011-24728 from the Spanish Ministerio de Ciencia y Educacion and from the Junta de Andalucia. This work is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Support for this work was provided by NASA through an award issued by JPL/Caltech. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. NR 91 TC 5 Z9 5 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 2012 VL 751 IS 2 AR 123 DI 10.1088/0004-637X/751/2/123 PG 20 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 944LU UT WOS:000304204600044 ER PT J AU Miller, JS Porter-Morgan, HA Stevens, H Boom, B Krupnick, GA Acevedo-Rodriguez, P Fleming, J Gensler, M AF Miller, James S. Porter-Morgan, Holly A. Stevens, Hannah Boom, Brian Krupnick, Gary A. Acevedo-Rodriguez, Pedro Fleming, James Gensler, Micah TI Addressing target two of the Global Strategy for Plant Conservation by rapidly identifying plants at risk SO BIODIVERSITY AND CONSERVATION LA English DT Article DE Global Strategy for Plant Conservation; Endangered species; Extinction ID IUCN RED LIST; HERBARIUM SPECIMENS; SEED PLANTS; ASSESSMENTS; DIVERSITY; CRITERIA; THREAT; FLORA AB Target two of the 2002 Global Strategy for Plant Conservation (GSPC), "A preliminary assessment of the conservation status of all known plant species, at national, regional, and international levels" was not accomplished by its original 2010 target date and has therefore been included as a revised 2020 target, "An assessment of the conservation status of all known plant species, as far as possible, to guide conservation action." The most widely used system to estimate risk of extinction, the International Union for the Conservation of Nature Red List, provides conservation assessments for fewer than 15,000 plant species. Progress achieving Target two has been hampered by the large number of plant species and the difficulty assembling the data needed for Red List assessments. Two streamlined methods for identifying those plant species considered At Risk under the GSPC Target two are compared and contrasted. Both methods use readily available locality data from herbarium specimens to efficiently identify At Risk species and approximate the list of species that would be identified as threatened by Red List analyses. A comprehensive analysis of the native plant species of Puerto Rico using both streamlined methods identifies 570 of the 2,025 species at some risk of extinction. More efficient systems for assessing threat allow a more timely response to Target two, allow conservation efforts to be directed to the species that need attention, and the list of threatened plants can be used to identify priority areas for plant conservation. C1 [Miller, James S.; Porter-Morgan, Holly A.; Stevens, Hannah; Boom, Brian; Fleming, James; Gensler, Micah] New York Bot Garden, Bronx, NY 10458 USA. [Porter-Morgan, Holly A.] LaGuardia Community Coll, Long Isl City, NY 11101 USA. [Krupnick, Gary A.; Acevedo-Rodriguez, Pedro] Smithsonian Inst, NMNH, Washington, DC 20013 USA. RP Miller, JS (reprint author), New York Bot Garden, 200th St & Kazimiroff Blvd, Bronx, NY 10458 USA. EM jmiller@nybg.org OI Krupnick, Gary/0000-0002-1357-4826 NR 45 TC 6 Z9 6 U1 0 U2 25 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0960-3115 EI 1572-9710 J9 BIODIVERS CONSERV JI Biodivers. Conserv. PD JUN PY 2012 VL 21 IS 7 BP 1877 EP 1887 DI 10.1007/s10531-012-0285-3 PG 11 WC Biodiversity Conservation; Ecology; Environmental Sciences SC Biodiversity & Conservation; Environmental Sciences & Ecology GA 944AY UT WOS:000304171900013 ER PT J AU Ruger, N Condit, R AF Rueger, Nadja Condit, Richard TI Testing metabolic theory with models of tree growth that include light competition SO FUNCTIONAL ECOLOGY LA English DT Article DE allometric scaling; Barro Colorado Island; hierarchical Bayesian model; light competition; metabolic scaling theory; Panama; tropical rainforest ID GENERAL QUANTITATIVE THEORY; SCALING THEORY; TROPICAL FORESTS; ADULT STATURE; ALLOMETRY; ECOLOGY; SIZE; MORTALITY; DYNAMICS; PANAMA AB 1. Metabolic scaling theory predicts that diameter growth rates of tree species are related to tree diameter by a universal scaling law. This model has been criticised because it ignores the influence of competition for resources such as light on the scaling of demographic rates with size. 2. We here test whether scaling exponents of abundant tropical tree species comply with the prediction of metabolic scaling theory and evaluate whether the scaling of growth with size depends on light availability. Light reaching each individual tree was estimated from yearly vertical censuses of canopy density, and a hierarchical Bayesian approach allowed quantifying confidence intervals for scaling exponents and accounting for different sources of error. 3. We found no universal scaling relationship, and 5070% of the species had scaling exponents that significantly differed from the predicted value of 1/3. As would be expected if competition for light were important, scaling exponents were >1/3 for the majority of species when all trees were combined. However, the community average of scaling exponents was not significantly different from the predicted value of 1/3 when only considering individuals that grew under high-light conditions. 4. These results support the hypothesis that the prediction of metabolic ecology for the scaling of tree growth with size is only valid when competition for light is unimportant. C1 [Rueger, Nadja] Univ Leipzig, AG Spezielle Bot & Funkt Biodiversitat, D-04103 Leipzig, Germany. [Condit, Richard] Smithsonian Trop Res Inst, Ctr Trop Forest Sci, Balboa Ancon, Panama. RP Ruger, N (reprint author), Univ Leipzig, AG Spezielle Bot & Funkt Biodiversitat, Johannisallee 21-23, D-04103 Leipzig, Germany. EM nadja.rueger@uni-leipzig.de RI Ruger, Nadja/J-6393-2015 OI Ruger, Nadja/0000-0003-2371-4172 FU John Wesley Powell Center for Analysis and Synthesis; U.S. Geological Survey; Deutsche Forschungsgemeinschaft DFG [RU 1536/2-1]; Center for Tropical Forest Science (CTFS); U.S. National Science Foundation [0948585]; John D. and Catherine D. McArthur Foundation; Smithsonian Tropical Research Institute FX This work was conducted as part of the Tree Mass Growth Working Group supported by the John Wesley Powell Center for Analysis and Synthesis, funded by the U.S. Geological Survey, and we thank working group members for discussions that spawned this paper. We thank Jens Doleschal and the Center for Information Services and High Performance Computing, Technische Universitat Dresden, for the parallelisation of the R code and provision of computing resources. N.R. was funded by research grants from Deutsche Forschungsgemeinschaft DFG (RU 1536/2-1) and the Center for Tropical Forest Science (CTFS). We would like to thank Stephanie Bohlman, Helene Muller-Landau, Scott Stark and two anonymous reviewers for constructive criticism on the manuscript. The BCI plot has been made possible through the support of the U.S. National Science Foundation (most recently, grant no. 0948585 to S. P. Hubbell), the John D. and Catherine D. McArthur Foundation, and the Smithsonian Tropical Research Institute. We thank the dozens of field assistants and botanists who have collected data on trees and carried out the canopy censuses in the BCI plot over the past 30 years. NR 51 TC 17 Z9 19 U1 3 U2 40 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0269-8463 J9 FUNCT ECOL JI Funct. Ecol. PD JUN PY 2012 VL 26 IS 3 BP 759 EP 765 DI 10.1111/j.1365-2435.2012.01981.x PG 7 WC Ecology SC Environmental Sciences & Ecology GA 945EV UT WOS:000304256500023 ER PT J AU Husnoo, N Pont, F Mazeh, T Fabrycky, D Hebrard, G Bouchy, F Shporer, A AF Husnoo, Nawal Pont, Frederic Mazeh, Tsevi Fabrycky, Daniel Hebrard, Guillaume Bouchy, Francois Shporer, Avi TI Observational constraints on tidal effects using orbital eccentricities SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE planetary systems ID TRANSITING HOT JUPITER; HIGH-PRECISION PHOTOMETRY; CLOSE BINARY-SYSTEMS; NEPTUNE-MASS PLANET; SOLAR-TYPE STAR; M-DWARF GJ-436; LIGHT-CURVE; GIANT PLANET; SPIN-ORBIT; SOUTHERN-HEMISPHERE AB We have analysed radial velocity measurements for known transiting exoplanets to study the empirical signature of tidal orbital evolution for close-in planets. Compared to standard eccentricity determination, our approach is modified to focus on the rejection of the null hypothesis of a circular orbit. We are using a Markov Chain Monte Carlo analysis of radial velocity measurements and photometric constraints, including a component of correlated noise, as well as Bayesian model selection to check if the data justify the additional complexity of an eccentric orbit. We find that among planets with non-zero eccentricity values quoted in the literature, there is no evidence for an eccentricity detection for the seven planets CoRoT-5b, WASP-5b, WASP-6b, WASP-10b, WASP-12b, WASP-17b and WASP-18b. In contrast, we confirm the eccentricity of HAT-P-16b, e= 0.034 +/- 0.003, the smallest eccentricity that is reliably measured so far for an exoplanet as well as that of WASP-14b, which is the planet at the shortest period (P= 2.24 d), with a confirmed eccentricity, e= 0.088 +/- 0.003. As part of the study, we present new radial velocity data using the HARPS spectrograph for CoRoT-1, CoRoT-3, WASP-2, WASP-4, WASP-5 and WASP-7 as well as the SOPHIE spectrograph for HAT-P-4, HAT-P-7, TrES-2 and XO-2. We show that the dissipative effect of tides raised in the planet by the star and vice versa explain all the eccentricity and spinorbit alignment measurements available for transiting planets. We revisit the massperiod relation and consider its relation to the stopping mechanism of orbital migration for hot Jupiters. In addition to CoRoT-2 and HD 189733, we find evidence for excess rotation of the star in the systems CoRoT-18, HAT-P-20, WASP-19 and WASP-43. C1 [Husnoo, Nawal; Pont, Frederic] Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England. [Mazeh, Tsevi] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel. [Fabrycky, Daniel] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Hebrard, Guillaume; Bouchy, Francois] Univ Paris 06, CNRS, Inst Astrophys Paris, UMR7095, F-75014 Paris, France. [Hebrard, Guillaume; Bouchy, Francois] Observ Haute Provence, CNRS OAMP, F-04870 St Michel lObservatoire, France. [Shporer, Avi] Las Cumbres Observ, Global Telescope Network, Goleta, CA 93117 USA. RP Husnoo, N (reprint author), Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England. EM nawal@astro.ex.ac.uk OI Fabrycky, Daniel/0000-0003-3750-0183 FU STFC; Halliday fellowship [ST/F011083/1] FX We are grateful to the anonymous referee for the encouraging remarks and the enormous amount of detailed feedback and sound advice, which helped us to make this paper better. We thank the editor for his encouraging comments. FP is grateful for the STFC grant and Halliday fellowship ST/F011083/1. We also thank the SOPHIE Exoplanet Consortium for arranging a flexible observation schedule for our programme, and the whole OHP/SOPHIE team for support. NH thanks Gilles Chabrier for his clear explanations of the equilibrium tides model. NR 84 TC 32 Z9 32 U1 0 U2 5 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUN PY 2012 VL 422 IS 4 BP 3151 EP 3177 DI 10.1111/j.1365-2966.2012.20839.x PG 27 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 945AV UT WOS:000304246100030 ER PT J AU Sanchez-Gallego, JR Knapen, JH Wilson, CD Barmby, P Azimlu, M Courteau, S AF Sanchez-Gallego, J. R. Knapen, J. H. Wilson, C. D. Barmby, P. Azimlu, M. Courteau, S. TI The JCMT Nearby Galaxies Legacy Survey - VII. H imaging and massive star formation properties SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE surveys; stars: massive; H ii regions; galaxies: star formation; galaxies: ISM ID ALPHA SURFACE PHOTOMETRY; HUBBLE-SPACE-TELESCOPE; FORMATION RATE INDICATORS; NEUTRAL GAS GALAXIES; SPIRAL GALAXIES; VIRGO CLUSTER; LOCAL VOLUME; FORMATION RATES; STANDARD STARS; DISK GALAXIES AB We present Ha fluxes, star formation rates (SFRs) and equivalent widths (EWs) for a sample of 156 nearby galaxies observed in the 12CO J= 32 line as part of the James Clerk Maxwell Telescope Nearby Galaxies Legacy Survey. These are derived from images and values in the literature and from new Ha images for 72 galaxies which we publish here. We describe the sample, observations and procedures to extract the Ha fluxes and related quantities. We discuss the SFR properties of our sample and confirm the well-known correlation with galaxy luminosity, albeit with high dispersion. Our SFRs range from 0.1 to 11 M? yr-1 with a median SFR value for the complete sample of 0.2 M? yr-1. This median value is somewhat lower than similar published measurements, which we attribute, in part, to our sample being H i selected and, thus, not biased towards high SFRs as has frequently been the case in previous studies. Additionally, we calculate internal absorptions for the Ha line, A(Ha), which are lower than many of those used in previous studies. Our derived EWs, which range from 1 to 880 angstrom with a median value of 27 angstrom, show little dependence on luminosity but rise by a factor of 5 from early- to late-type galaxies. This paper is the first in a series aimed at comparing SFRs obtained from Ha imaging of galaxies with information derived from other tracers of star formation and atomic and molecular gas. C1 [Sanchez-Gallego, J. R.; Knapen, J. H.] Inst Astrofis Canarias, E-38205 Tenerife, Spain. [Sanchez-Gallego, J. R.; Knapen, J. H.] Univ La Laguna, Dept Astrofis, E-38200 Tenerife, Spain. [Wilson, C. D.] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada. [Barmby, P.; Azimlu, M.] Univ Western Ontario, Dept Phys & Astron, London, ON N6A 3K7, Canada. [Azimlu, M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Courteau, S.] Queens Univ, Dept Phys Engn Phys & Astron, Kingston, ON K7L 3N6, Canada. RP Sanchez-Gallego, JR (reprint author), Inst Astrofis Canarias, E-38205 Tenerife, Spain. EM jrsg@iac.es RI Barmby, Pauline/I-7194-2016 OI Barmby, Pauline/0000-0003-2767-0090 NR 82 TC 18 Z9 18 U1 1 U2 2 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JUN PY 2012 VL 422 IS 4 BP 3208 EP 3248 DI 10.1111/j.1365-2966.2012.20845.x PG 41 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 945AV UT WOS:000304246100033 ER PT J AU Nesvorny, D Kipping, DM Buchhave, LA Bakos, GA Hartman, J Schmitt, AR AF Nesvorny, David Kipping, David M. Buchhave, Lars A. Bakos, Gaspar A. Hartman, Joel Schmitt, Allan R. TI The Detection and Characterization of a Nontransiting Planet by Transit Timing Variations SO SCIENCE LA English DT Article ID EXTRASOLAR PLANETS; MASS; SYSTEM; EFFICIENT; EXOMOON AB The Kepler mission is monitoring the brightness of similar to 150,000 stars, searching for evidence of planetary transits. As part of the Hunt for Exomoons with Kepler (HEK) project, we report a planetary system with two confirmed planets and one candidate planet discovered with the publicly available data for KOI-872. Planet b transits the host star with a period P-b = 33.6 days and exhibits large transit timing variations indicative of a perturber. Dynamical modeling uniquely detects an outer nontransiting planet c near the 5: 3 resonance (P-c = 57.0 days) with a mass 0.37 times that of Jupiter. Transits of a third planetary candidate are also found: a 1.7-Earth radius super-Earth with a 6.8-day period. Our analysis indicates a system with nearly coplanar and circular orbits, reminiscent of the orderly arrangement within the solar system. C1 [Nesvorny, David] SW Res Inst, Dept Space Studies, Boulder, CO 80302 USA. [Kipping, David M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Buchhave, Lars A.] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark. [Buchhave, Lars A.] Univ Copenhagen, Nat Hist Museum Denmark, Ctr Star & Planet Format, DK-1350 Copenhagen, Denmark. [Bakos, Gaspar A.; Hartman, Joel] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA. RP Nesvorny, D (reprint author), SW Res Inst, Dept Space Studies, Boulder, CO 80302 USA. EM davidn@boulder.swri.edu OI Buchhave, Lars A./0000-0003-1605-5666 FU NSF [AST-1008890, AST-1108686]; NASA [NNX09AB29G] FX This work is part of the Hunt for Exomoons with Kepler (HEK) project. We thank the Kepler Science Team, especially the Data Analysis Working Group, for making the data used here available. D.N. acknowledges support from NSF AST-1008890. D. M. K. is supported by the NASA Sagan fellowship. G. A. B. acknowledges support from NASA grant NNX09AB29G. J.H. acknowledges support from NSF AST-1108686. NR 23 TC 66 Z9 66 U1 1 U2 5 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD JUN 1 PY 2012 VL 336 IS 6085 BP 1133 EP 1136 DI 10.1126/science.1221141 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 950KK UT WOS:000304647900042 PM 22582018 ER PT J AU Carleton, MD Stanley, WT AF Carleton, Michael D. Stanley, William T. TI Species limits within the Praomys delectorum group (Rodentia: Muridae: Murinae) of East Africa: a morphometric reassessment and biogeographical implications SO ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY LA English DT Review DE Eastern Arc Mountains; Makambako Gap; Praomys melanotus; Praomys taitae; taxonomy ID SMALL MAMMAL INVENTORIES; WEST USAMBARA MOUNTAINS; COMPLEX RODENTIA; ARC MOUNTAINS; MORPHOLOGICAL EVOLUTION; UDZUNGWA MOUNTAINS; MUROID RODENTS; MONTANE AREAS; NATIONAL-PARK; TANZANIA AB We examined approximately 600 specimens that represent the Praomys delectorum species group (Muridae: Murinae: Praomyini), a rodent complex restricted to Afromontane landscapes in East Africa and currently viewed as a single species. Morphometric analyses of 21 population samples consistently disclosed cohesive patterns of craniodental differentiation that support the recognition of three species: Praomys delectorum Thomas, confined to extreme southern Malawi; P. melanotus Allen & Loveridge, found in highlands of south-western Tanzania and contiguous northern Malawi; and P. taitae Heller (including octomastis Hatt), distributed in mountains and foothills of southern Kenya and northern and central Tanzania. Populations of the P. delectorum group are patchily distributed in moist montane forest, most collecting localities falling within 10002400 m, and their range collectively coincides with the TanganyikaNyasa Montane Forest Group sensu Moreau. Patterns of faunal similarity derived from distributions of 65 species of terrestrial small mammals recorded from Tanzania's highlands, including the Eastern Arc Mountains, demonstrated pronounced geographical discontinuities in montane associations but failed to uncover a prominent vicariant role for the Makambako Gap. (c) 2012 The Linnean Society of London, Zoological Journal of the Linnean Society, 2012, 165, 420469. C1 [Carleton, Michael D.] Smithsonian Inst, Natl Museum Nat Hist, Dept Vertebrate Zool, Washington, DC 20560 USA. [Stanley, William T.] Field Museum Nat Hist, Dept Zool, Div Mammals, Chicago, IL 60605 USA. RP Carleton, MD (reprint author), Smithsonian Inst, Natl Museum Nat Hist, Dept Vertebrate Zool, Washington, DC 20560 USA. EM carletonm@si.edu FU National Geographic Society [5053-93, 5244-94, 5711-96]; Critical Ecosystem Partnership Fund; Field Museum of Natural History (Field Museum/IDP Foundation, Inc.); Barbara Brown; Council on Africa; Ellen Thorne Smith; Marshall Field Funds FX For specimen loans and/or access to collections, we thank Robert S. Voss and Eileen Westwig (AMNH); Paula D. Jenkins and Richard Sabin (BMNH); Suzanne McLaren (CM); John D. Phelps III (FMNH); and Judy Chupasko and Mark Omura (MCZ). Rebecca Banasiak (FMNH) rendered the map and photographs of study skins (Figs 1, 8), and Dave Schmidt (USNM) photographed specimens (Figs 6, 7); we appreciate their careful attention to detail in helping to communicate our scientific results. Two anonymous reviewers devoted careful scrutiny to the manuscript and improved the clarity of our communication. Permits issued to W.T.S. to conduct research in Tanzania were granted by the Tanzania Commission for Science and Technology, the Tanzania Wildlife Research Institute, and the Ministry of Natural Resources and Tourism. Support for fieldwork by W.T.S. was provided by the National Geographic Society (Grants 5053-93, 5244-94, 5711-96), the Critical Ecosystem Partnership Fund, and the Field Museum of Natural History (Field Museum/IDP Foundation, Inc. African Training Fund, as well as the Barbara Brown, Council on Africa, Ellen Thorne Smith, and Marshall Field Funds). At various times, Steven M. Goodman, Kim M. Howell, Philip M. Kihaule, Sophy J. Machaga, and Maiko M. Munissi helped W.T.S. to collect specimens, and Tim Davenport supplied logistical support within Tanzania. NR 124 TC 12 Z9 12 U1 0 U2 6 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0024-4082 EI 1096-3642 J9 ZOOL J LINN SOC-LOND JI Zool. J. Linn. Soc. PD JUN PY 2012 VL 165 IS 2 BP 420 EP 469 DI 10.1111/j.1096-3642.2012.00817.x PG 50 WC Zoology SC Zoology GA 946XZ UT WOS:000304392200008 ER PT J AU Nweeia, MT Eichmiller, FC Hauschka, PV Tyler, E Mead, JG Potter, CW Angnatsiak, DP Richard, PR Orr, JR Black, SR AF Nweeia, Martin T. Eichmiller, Frederick C. Hauschka, Peter V. Tyler, Ethan Mead, James G. Potter, Charles W. Angnatsiak, David P. Richard, Pierre R. Orr, Jack R. Black, Sandie R. TI Vestigial Tooth Anatomy and Tusk Nomenclature for Monodon Monoceros SO ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY LA English DT Article DE Monodon monoceros; narwhal; vestigial teeth; osteoanatomy; nomenclature ID ELEPHANT LOXODONTA-AFRICANA; MAMMALIA; PROBOSCIDEA; NARWHAL; EVOLUTION; PATTERN; EOCENE; DENTIN; IVORY; INDIA AB Narwhal tusks, although well described and characterized within publications, are clouded by contradictory references, which refer to them as both incisors and canines. Vestigial teeth are briefly mentioned in the scientific literature with limited descriptions and no image renderings. This study first examines narwhal maxillary osteoanatomy to determine whether the erupted tusks are best described as incisiform or caniniform teeth. The study also offers evidence to support the evolutionary obsolescence of the vestigial teeth through anatomic, morphologic, and histologic descriptions. Examination of 131 skull samples, including 110 museum skull specimens and 21 harvested skulls, revealed the erupted tusks surrounded by maxillary bone over the entire length of their bone socket insertion, and are thus more accurately termed caniniform or canine teeth. The anatomy, morphology, and development of vestigial teeth in five skull samples are more fully described and documented. Vestigial tooth samples included 14 embedded pairs or individual teeth that were partially exposed or removed from the maxillary bone. Their location was posterior, ventral, and lateral to the tusks, although male vestigial teeth often exfoliate in the mouth lodging between the palatal tissue and underlying maxillary bone. Their myriad morphologies, sizes, and eruption patterns suggest that these teeth are no longer guided by function but rather by random germ cell differentiation and may eventually cease expression entirely. The conclusions reached are that the narwhal tusks are the expression of canine teeth and that vestigial teeth have no apparent functional characteristics and are following a pattern consistent with evolutionary obsolescence. Anat Rec, 2012. (c) 2012 Wiley Periodicals, Inc. C1 [Nweeia, Martin T.] Harvard Univ, Sch Dent Med, Dept Restorat Dent & Biomat Sci, Boston, MA 02115 USA. [Nweeia, Martin T.] Smithsonian Inst, Dept Vertebrate Zool, Washington, DC 20560 USA. [Nweeia, Martin T.; Potter, Charles W.] Harvard Museum Comparat Zool, Dept Mammals, Boston, MA USA. [Eichmiller, Frederick C.] Delta Dent Wisconsin, Stevens Point, WI USA. [Hauschka, Peter V.] Childrens Hosp Boston, Dept Orthopaed Surg, Boston, MA USA. [Tyler, Ethan] NIH, Med Arts Design Sect, Washington, DC USA. [Angnatsiak, David P.] Inuit Hunter, Pond Inlet, NU, Canada. [Richard, Pierre R.; Orr, Jack R.] Fisheries & Oceans Canada, Arctic Res Div, Winnipeg, MB, Canada. [Black, Sandie R.] Calgary Zoo Anim Hlth Ctr, Vet Serv, Calgary, AB, Canada. RP Nweeia, MT (reprint author), Harvard Univ, Sch Dent Med, Dept Restorat Dent & Biomat Sci, 188 Longwood Ave, Boston, MA 02115 USA. EM martin_nweeia@hsdm.harvard.edu FU National Science Foundation; Harvard School of Medicine; Harvard School of Dental Medicine; Explorers Club; World Center for Exploration; National Geographic Society; Smithsonian Institution; Harvard Museum of Comparative Zoology FX Grant sponsors: National Science Foundation, Harvard Schools of Medicine and Dental Medicine, The Explorers Club, World Center for Exploration, The National Geographic Society, the Smithsonian Institution, the Harvard Museum of Comparative Zoology. NR 79 TC 10 Z9 10 U1 13 U2 98 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 1932-8486 J9 ANAT REC JI Anat. Rec. PD JUN PY 2012 VL 295 IS 6 BP 1006 EP 1016 DI 10.1002/ar.22449 PG 11 WC Anatomy & Morphology SC Anatomy & Morphology GA 940SY UT WOS:000303914600014 PM 22467529 ER PT J AU Lacy, CHS Torres, G Fekel, FC Sabby, JA Claret, A AF Lacy, Claud H. Sandberg Torres, Guillermo Fekel, Francis C. Sabby, Jeffrey A. Claret, Antonio TI ABSOLUTE PROPERTIES OF THE ECLIPSING BINARY STAR BF DRACONIS SO ASTRONOMICAL JOURNAL LA English DT Article DE binaries: eclipsing; binaries: spectroscopic; stars: fundamental parameters; stars: individual (BF Dra) ID SPECTROSCOPIC BINARIES; MODEL ATMOSPHERES; RADIAL-VELOCITIES; PRECISION ORBITS; BETA PHOTOMETRY; TIDAL-EVOLUTION; APSIDAL MOTION; Y-2 ISOCHRONES; MAIN-SEQUENCE; LIGHT CURVES AB BF Dra is now known to be an eccentric double-lined F6+F6 binary star with relatively deep (0.7 mag) partial eclipses. Previous studies of the system are improved with 7494 differential photometric observations from the URSA WebScope and 9700 from the NFO WebScope, 106 high-resolution spectroscopic observations from the Tennessee State University 2 m automatic spectroscopic telescope and the 1 m coude-feed spectrometer at Kitt Peak National Observatory, and 31 accurate radial velocities from the CfA. Very accurate (better than 0.6%) masses and radii are determined from analysis of the two new light curves and four radial velocity curves. Theoretical models match the absolute properties of the stars at an age of about 2.72 Gyr and [Fe/H]= -0.17, and tidal theory correctly confirms that the orbit should still be eccentric. Our observations of BF Dra constrain the convective core overshooting parameter to be larger than about 0.13 H-p. We find, however, that standard tidal theory is unable to match the observed slow rotation rates of the components' surface layers. C1 [Lacy, Claud H. Sandberg] Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA. [Torres, Guillermo] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Fekel, Francis C.] Tennessee State Univ, Ctr Excellence Informat Syst, Nashville, TN 37209 USA. [Sabby, Jeffrey A.] So Illinois Univ, Dept Phys, Edwardsville, IL 62026 USA. [Claret, Antonio] CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain. RP Lacy, CHS (reprint author), Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA. EM clacy@uark.edu; gtorres@cfa.harvard.edu; fekel@evans.tsuniv.edu; jsabby@siue.edu; claret@iaa.es FU NASA; Tennessee State University; state of Tennessee; NSF [AST-10-07992] FX The research at Tennessee State University was supported in part by NASA, NSF, Tennessee State University, and the state of Tennessee through its Centers of Excellence program.; The authors thank Bill Neely who operates and maintains the NFO WebScope for the Consortium, and who handles preliminary processing of the images and their distribution. The authors also thank the staff at KPNO, especially Daryl Willmarth, for maintenance and preparation of the coude-feed telescope and spectrometer. G.T. acknowledges partial support from the NSF grant AST-10-07992. Thanks also to University of Arkansas graduate student Mythra Varun Nemallapudi for initial analysis of the URSA photometry and preliminary radial velocities. NR 67 TC 4 Z9 4 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-6256 J9 ASTRON J JI Astron. J. PD JUN PY 2012 VL 143 IS 6 AR 129 DI 10.1088/0004-6256/143/6/129 PG 18 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 944GH UT WOS:000304186800002 ER PT J AU Littlefield, C Garnavich, P Marion, GH Vinko, J McClelland, C Rettig, T Wheeler, JC AF Littlefield, Colin Garnavich, Peter Marion, G. H. Howie Jozsef Vinko McClelland, Colin Rettig, Terrence Wheeler, J. Craig TI DISCOVERY OF A WOLF-RAYET STAR THROUGH DETECTION OF ITS PHOTOMETRIC VARIABILITY SO ASTRONOMICAL JOURNAL LA English DT Article DE stars: individual (HBHa4203-27, WR142b); stars: Wolf-Rayet ID MASSIVE STARS; WN STARS; EXTINCTION; SPECTRA; CATALOG AB We report the serendipitous discovery of a heavily reddened Wolf-Rayet star that we name WR 142b. While photometrically monitoring a cataclysmic variable, we detected weak variability in a nearby field star. Low-resolution spectroscopy revealed a strong emission line at 7100 angstrom, suggesting an unusual object and prompting further study. A spectrum taken with the Hobby-Eberly Telescope confirms strong He II emission and an N IV 7112 angstrom line consistent with a nitrogen-rich Wolf-Rayet star of spectral class WN6. Analysis of the He II line strengths reveals no detectable hydrogen in WR 142b. A blue-sensitive spectrum obtained with the Large Binocular Telescope shows no evidence for a hot companion star. The continuum shape and emission line ratios imply a reddening of E(B - V) = 2.2-2.6 mag. We estimate that the distance to WR 142b is 1.4 +/- 0.3 kpc. C1 [Littlefield, Colin] Univ Notre Dame, Sch Law, Notre Dame, IN 46556 USA. [Garnavich, Peter; McClelland, Colin; Rettig, Terrence] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. [Marion, G. H. Howie] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Jozsef Vinko] Univ Szeged, Dept Opt, Szeged, Hungary. [Jozsef Vinko; Wheeler, J. Craig] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA. RP Littlefield, C (reprint author), Univ Notre Dame, Sch Law, Notre Dame, IN 46556 USA. FU NSF [AST-1109801, AST-9987045]; Ohio Board of Regents; Ohio State University Office of Research FX We thank Perry Berlind of the Fred Whipple Observatory, Sergey Rostopchin of McDonald Observatory, and Rick Pogge of The Ohio State University. Additionally, Elena Pavlenko, Maksim Andreev, and Aleksej Sosnovskij at the Crimean Astrophysical Observatory and Brian Skiff of the Lowell Observatory kindly contributed photometry of WR 142b. We thank Sebastian Otero for pointing out that the star was a catalogued emission-line object. We also thank the anonymous referee for several useful suggestions that improved the paper. J.C.W. is supported in part by NSF grant AST-1109801.; The MODS spectrographs were built with funding from the NSF grant AST-9987045 and the NSF Telescope System Instrumentation Program (TSIP), with additional funds from the Ohio Board of Regents and the Ohio State University Office of Research. NR 30 TC 1 Z9 1 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-6256 J9 ASTRON J JI Astron. J. PD JUN PY 2012 VL 143 IS 6 AR 136 DI 10.1088/0004-6256/143/6/136 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 944GH UT WOS:000304186800009 ER PT J AU Polyakov, YS Neilsen, J Timashev, SF AF Polyakov, Yuriy S. Neilsen, Joseph Timashev, Serge F. TI STOCHASTIC VARIABILITY IN X-RAY EMISSION FROM THE BLACK HOLE BINARY GRS 1915+105 SO ASTRONOMICAL JOURNAL LA English DT Article DE accretion, accretion disks; binaries: close; black hole physics; methods: data analysis; methods: statistical; X-rays: individual (GRS 1915+105) ID FLICKER-NOISE SPECTROSCOPY; QUASI-PERIODIC OSCILLATIONS; FAST FOURIER-TRANSFORM; POWER SPECTRA; SYSTEM GRS-1915+105; RADIO-EMISSION; TIME-SERIES; HARD STATE; PHASE-LAG; SIGNALS AB We examine stochastic variability in the dynamics of X-ray emission from the black hole system GRS 1915+105, a strongly variable microquasar commonly used for studying relativistic jets and the physics of black hole accretion. The analysis of sample observations for 13 different states in both soft (low) and hard (high) energy bands is performed by flicker-noise spectroscopy (FNS), a phenomenological time series analysis method operating on structure functions and power spectrum estimates. We find the values of FNS parameters, including the Hurst exponent, flicker-noise parameter, and characteristic timescales, for each observation based on multiple 2500 s continuous data segments. We identify four modes of stochastic variability driven by dissipative processes that may be related to viscosity fluctuations in the accretion disk around the black hole: random (RN), power-law (1F), one-scale (1S), and two-scale (2S). The variability modes are generally the same in soft and hard energy bands of the same observation. We discuss the potential for future FNS studies of accreting black holes. C1 [Polyakov, Yuriy S.] USPolyResearch, Ashland, PA 17921 USA. [Neilsen, Joseph] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA. [Timashev, Serge F.] Karpov Inst Phys Chem, Moscow 103064, Russia. [Neilsen, Joseph] Harvard Univ, Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Timashev, Serge F.] Russian Acad Sci, Inst Laser & Informat Technol, Troitsk 142190, Moscow Region, Russia. RP Polyakov, YS (reprint author), USPolyResearch, Ashland, PA 17921 USA. EM ypolyakov@uspolyresearch.com OI Neilsen, Joseph/0000-0002-8247-786X FU Harvard University Graduate School of Arts and Sciences [AR0-11004X]; National Aeronautics and Space Administration through the Smithsonian Astrophysical Observatory [SV3-73016]; National Aeronautics Space Administration [NAS8-03060] FX J.N. was supported in part by the Harvard University Graduate School of Arts and Sciences, Chandra grant AR0-11004X, and the National Aeronautics and Space Administration through the Smithsonian Astrophysical Observatory contract SV3-73016 to MIT for support of the Chandra X-ray Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics Space Administration under the contract NAS8-03060. NR 55 TC 6 Z9 6 U1 1 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-6256 J9 ASTRON J JI Astron. J. PD JUN PY 2012 VL 143 IS 6 AR 148 DI 10.1088/0004-6256/143/6/148 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 944GH UT WOS:000304186800021 ER PT J AU Ogada, DL Torchin, ME Kinnaird, MF Ezenwa, VO AF Ogada, D. L. Torchin, M. E. Kinnaird, M. F. Ezenwa, V. O. TI Effects of Vulture Declines on Facultative Scavengers and Potential Implications for Mammalian Disease Transmission SO CONSERVATION BIOLOGY LA English DT Article DE carcass decomposition; carnivore; hyena; jackal; Kenya ID DOGS CANIS-FAMILIARIS; MARA NATIONAL RESERVE; DOMESTIC DOGS; VERTEBRATE SCAVENGERS; CROCUTA-CROCUTA; RURAL ZIMBABWE; SPOTTED HYENAS; LYCAON-PICTUS; WILDLIFE; RABIES AB Vultures (Accipitridae and Cathartidae) are the only known obligate scavengers. They feed on rotting carcasses and are the most threatened avian functional group in the world. Possible effects of vulture declines include longer persistence of carcasses and increasing abundance of and contact between facultative scavengers at these carcasses. These changes could increase rates of transmission of infectious diseases, with carcasses serving as hubs of infection. To evaluate these possibilities, we conducted a series of observations and experimental tests of the effects of vulture extirpation on decomposition rates of livestock carcasses and mammalian scavengers in Kenya. We examined whether the absence of vultures changed carcass decomposition time, number of mammalian scavengers visiting carcasses, time spent by mammals at carcasses, and potential for disease transmission at carcasses (measured by changes in intraspecific contact rates). In the absence of vultures, mean carcass decomposition rates nearly tripled. Furthermore, the mean number of mammals at carcasses increased 3-fold (from 1.5 to 4.4 individuals/carcass), and the average time spent by mammals at carcasses increased almost 3-fold (from 55 min to 143 min). There was a nearly 3-fold increase in the mean number of contacts between mammalian scavengers at carcasses without vultures. These results highlight the role of vultures in carcass decomposition and level of contact among mammalian scavengers. In combination, our findings lead us to hypothesize that changes in vulture abundance may affect patterns of disease transmission among mammalian carnivores. C1 [Ogada, D. L.; Kinnaird, M. F.; Ezenwa, V. O.] Mpala Res Ctr, Nanyuki, Kenya. [Ogada, D. L.] Natl Museums Kenya, Ornithol Sect, Nairobi 00100, Kenya. Peregrine Fund, Boise, ID 83709 USA. [Torchin, M. E.] Smithsonian Trop Res Inst, Balboa, Ancon, Panama. [Kinnaird, M. F.] Wildlife Conservat Soc Global Programs, Bronx, NY 10460 USA. [Ezenwa, V. O.] Univ Georgia, Dept Infect Dis, Coll Vet Med, Athens, GA 30602 USA. [Ezenwa, V. O.] Univ Georgia, Coll Vet Med, Odum Sch Ecol, Athens, GA 30602 USA. RP Ogada, DL (reprint author), Mpala Res Ctr, Box 555, Nanyuki, Kenya. EM darcyogada@yahoo.com FU Smithsonian Institution; Raptor Research Foundation; Smithsonian Tropical Research Institute FX This research was funded by grants from the Smithsonian Institution, The Peregrine Fund, Raptor Research Foundation-Leslie Brown Award, Chester Zoo, and the Smithsonian Tropical Research Institute. The Smithsonian Mpala Fellowship provided logistical support to D.O. We thank R. Eraguay for field assistance. Mpala Research Centre provided logistical support, and in particular we acknowledge M. Littlewood and J. Nakalonyo for their assistance. We gratefully acknowledge support and advice provided by S. Thomsett, L. Frank, R. Woodroffe, and M. Virani. C. Kreuder Johnson, E. Fleishman, K. Bildstein, and P. Daszak provided valuable comments that significantly improved the manuscript. NR 42 TC 33 Z9 34 U1 6 U2 67 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0888-8892 J9 CONSERV BIOL JI Conserv. Biol. PD JUN PY 2012 VL 26 IS 3 BP 453 EP 460 DI 10.1111/j.1523-1739.2012.01827.x PG 8 WC Biodiversity Conservation; Ecology; Environmental Sciences SC Biodiversity & Conservation; Environmental Sciences & Ecology GA 943PA UT WOS:000304135300009 PM 22443166 ER PT J AU Triantis, KA Hortal, J Amorim, I Cardoso, P Santos, AMC Gabriel, R Borges, PAV AF Triantis, Kostas A. Hortal, Joaquin Amorim, Isabel Cardoso, Pedro Santos, Ana M. C. Gabriel, Rosalina Borges, Paulo A. V. TI Resolving the Azorean knot: a response to Carine & Schaefer (2010) SO JOURNAL OF BIOGEOGRAPHY LA English DT Letter DE Azores; Canary Islands; climate oscillations; diversification; endemism; isolation; Macaronesia; sea-level oscillations; seamounts; stepping stones ID OCEANIC ISLAND BIOGEOGRAPHY; LAST GLACIAL MAXIMUM; NORTH-ATLANTIC; PHYLOGEOGRAPHY; CLIMATE; CIRCULATION; DIVERSITY; RECORD; AREA AB Carine & Schaefer (Journal of Biogeography, 2010, 37, 7789) suggest that the lack of past climate oscillations in the Azores may have contributed to the low plant endemism in this archipelago compared to that of the Canary Islands, a pattern they term the Azorean diversity enigma. Here we challenge their hypothesis, and discuss how the particular characteristics of the Azores may have driven current diversification patterns in this archipelago. We argue that the restricted number of Azorean endemic species and their wide distribution is explicable by the geological, geographical and ecological attributes of the archipelago. That is, the Azores are too young, too small, and too environmentally homogeneous to have hosted many in situ diversification events, so they do not host as many endemic species as other Macaronesian archipelagos, such as Madeira and especially the Canary Islands. C1 [Triantis, Kostas A.; Hortal, Joaquin; Amorim, Isabel; Cardoso, Pedro; Santos, Ana M. C.; Gabriel, Rosalina; Borges, Paulo A. V.] Univ Acores, Azorean Biodivers Grp CITA A, P-9700042 Terceira, Acores, Portugal. [Triantis, Kostas A.] Univ Oxford, Ctr Environm, Biodivers Res Grp, Oxford OX1 3QY, England. [Hortal, Joaquin] CSIC, Museo Nacl Ciencias Nat, Dept Biodiversidad & Biol Evolut, E-28006 Madrid, Spain. [Hortal, Joaquin; Santos, Ana M. C.] Univ Fed Goias, Inst Ciencias Biol, Dept Ecol, BR-74001970 Goiania, Go, Brazil. [Amorim, Isabel] Univ E Anglia, Sch Biol Sci, Norwich NR4 7TJ, Norfolk, England. [Cardoso, Pedro] Natl Museum Nat Hist, Smithsonian Inst, Washington, DC 20560 USA. RP Triantis, KA (reprint author), Univ Acores, Azorean Biodivers Grp CITA A, P-9700042 Terceira, Acores, Portugal. EM konstantinos.triantis@ouce.ox.ac.uk RI Triantis, Kostas/A-1018-2009; Borges, Paulo/B-2780-2008; Gabriel, Rosalina/F-1598-2013; Santos, Ana/E-7598-2010; Hortal, Joaquin/A-1531-2008; Cardoso, Pedro/A-8820-2008; Amorim do Rosario, Isabel/P-5140-2015 OI Borges, Paulo/0000-0002-8448-7623; Gabriel, Rosalina/0000-0002-3550-8010; Santos, Ana/0000-0002-9197-792X; Hortal, Joaquin/0000-0002-8370-8877; Cardoso, Pedro/0000-0001-8119-9960; Amorim do Rosario, Isabel/0000-0001-6847-3320 NR 37 TC 14 Z9 14 U1 0 U2 13 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0305-0270 EI 1365-2699 J9 J BIOGEOGR JI J. Biogeogr. PD JUN PY 2012 VL 39 IS 6 BP 1179 EP 1184 DI 10.1111/j.1365-2699.2011.02623.x PG 6 WC Ecology; Geography, Physical SC Environmental Sciences & Ecology; Physical Geography GA 943QG UT WOS:000304139100015 ER PT J AU Rotman, D Procita, K Hansen, D Parr, CS Preece, J AF Rotman, Dana Procita, Kezia Hansen, Derek Parr, Cynthia Sims Preece, Jennifer TI Supporting content curation communities: The case of the Encyclopedia of Life SO JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE AND TECHNOLOGY LA English DT Article DE collaboration; computer mediated communications; human computer interaction ID CITIZEN-SCIENCE; RESOURCE; PROJECT; NETWORK AB This article explores the opportunities and challenges of creating and sustaining large-scale content curation communities through an in-depth case study of the Encyclopedia of Life (EOL). Content curation communities are large-scale crowdsourcing endeavors that aim to curate existing content into a single repository, making these communities different from content creation communities such as Wikipedia. In this article, we define content curation communities and provide examples of this increasingly important genre. We then follow by presenting EOL, a compelling example of a content curation community, and describe a case study of EOL based on analysis of interviews, online discussions, and survey data. Our findings are characterized into two broad categories: information integration and social integration. Information integration challenges at EOL include the need to (a) accommodate and validate multiple sources and (b) integrate traditional peer reviewed sources with user-generated, nonpeer-reviewed content. Social integration challenges at EOL include the need to (a) establish the credibility of open-access resources within the scientific community and (b) facilitate collaboration between experts and novices. After identifying the challenges, we discuss the potential strategies EOL and other content curation communities can use to address them, and provide technical, content, and social design recommendations for overcoming them. C1 [Rotman, Dana; Procita, Kezia; Hansen, Derek; Preece, Jennifer] Univ Maryland, Coll Informat Studies, College Pk, MD 20742 USA. [Parr, Cynthia Sims] Smithsonian Inst, Natl Museum Nat Hist, Washington, DC 20013 USA. RP Rotman, D (reprint author), Univ Maryland, Coll Informat Studies, College Pk, MD 20742 USA. EM drotman@umd.edu; kprocita@umd.edu; dlhansen@umd.edu; parrc@si.edu; preece@umd.edu RI Parr, Cynthia/E-8013-2010 OI Parr, Cynthia/0000-0002-8870-7099 NR 58 TC 11 Z9 11 U1 3 U2 44 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1532-2882 EI 1532-2890 J9 J AM SOC INF SCI TEC JI J. Am. Soc. Inf. Sci. Technol. PD JUN PY 2012 VL 63 IS 6 BP 1092 EP 1107 DI 10.1002/asi.22633 PG 16 WC Computer Science, Information Systems; Information Science & Library Science SC Computer Science; Information Science & Library Science GA 943OO UT WOS:000304133900003 ER PT J AU Wright, RP Lentz, DL Beaubien, HF Kimbrough, CK AF Wright, Rita P. Lentz, David L. Beaubien, Harriet F. Kimbrough, Christine K. TI New evidence for jute (Corchorus capsularis L.) in the Indus civilization SO ARCHAEOLOGICAL AND ANTHROPOLOGICAL SCIENCES LA English DT Article DE Jute cloth; Corchorus capsularis L.; Indus civilization AB In this paper, we report the results of an analysis of a preserved structure of jute on a ceramic artifact from the site of Harappa that is dated to 2200-1900 (cal.) BC (Fig. 1). Jute cloth has not previously been identified at this early date in the Indus civilization. Since fiber remains are rare in prehistoric South Asia, we briefly review the evidence for seed and fiber remains used in textile production in this region. C1 [Wright, Rita P.] NYU, Dept Anthropol, New York, NY 10003 USA. [Lentz, David L.] Univ Cincinnati, Dept Biol, Cincinnati, OH USA. [Beaubien, Harriet F.] Smithsonian Inst, Museum Conservat Inst, Suitland, MD USA. [Kimbrough, Christine K.] EBI Consulting, Burlington, MA USA. RP Wright, RP (reprint author), NYU, Dept Anthropol, New York, NY 10003 USA. EM rita.wright@nyu.edu NR 29 TC 2 Z9 2 U1 0 U2 4 PU SPRINGER HEIDELBERG PI HEIDELBERG PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY SN 1866-9557 J9 ARCHAEOL ANTHROP SCI JI Archaeol. Anthropol. Sci. PD JUN PY 2012 VL 4 IS 2 BP 137 EP 143 DI 10.1007/s12520-012-0088-1 PG 7 WC Anthropology; Archaeology; Geosciences, Multidisciplinary SC Anthropology; Archaeology; Geology GA 223TW UT WOS:000324834800004 ER PT J AU Cline, AR Shockley, FW AF Cline, Andrew R. Shockley, Floyd W. TI A NEW SPECIES OF FALLIA SHARP (CUCUJOIDEA: DISCOLOMATIDAE) FROM THE WEST INDIES, WITH A WORLD CHECKLIST FOR FALLIA SO COLEOPTERISTS BULLETIN LA English DT Article DE taxonomy; catalog; Hispaniola; Dominican Republic; Caribbean ID COLEOPTERA AB A new discolomatid species, Fallia iviei Cline and Shockley, new species, is described from the Dominican Republic. A distribution map, habitus and character images, and discussion of its biology are provided. The new species represents the first known member of the genus from the West Indies. A species checklist for all nine described species of Fallia Sharp is presented. C1 [Cline, Andrew R.] CDFA PPDC, Sacramento, CA 95758 USA. [Shockley, Floyd W.] Smithsonian Inst, Natl Museum Nat Hist, Dept Entomol, Washington, DC 20013 USA. RP Cline, AR (reprint author), CDFA PPDC, 3294 Meadowview Rd, Sacramento, CA 95758 USA. EM Andrew.Cline@cdfa.ca.gov; ShockleyF@si.edu NR 20 TC 0 Z9 0 U1 0 U2 0 PU COLEOPTERISTS SOC PI ATHENS PA UNIV GEORGIA, 413 BIOLOGICAL SCIENCES BUILDING, ATHENS, GA 30602-2603 USA SN 0010-065X J9 COLEOPTS BULL JI Coleopt. Bull. PD JUN PY 2012 VL 66 IS 2 BP 93 EP 99 PG 7 WC Entomology SC Entomology GA 142UF UT WOS:000318822400003 ER PT J AU Tenner, E AF Tenner, Edward TI The Idea Factory: Bell Labs and the Great Age of American Innovation SO ISSUES IN SCIENCE AND TECHNOLOGY LA English DT Book Review C1 [Tenner, Edward] Smithsonian Inst, Lemelson Ctr, Washington, DC 20560 USA. RP Tenner, E (reprint author), Rutgers Ctr Mobile Commun Studies, Newark, NJ 07102 USA. EM edward.h.tenner@gmail.com NR 1 TC 0 Z9 0 U1 1 U2 1 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0748-5492 EI 1938-1557 J9 ISSUES SCI TECHNOL JI Issues Sci. Technol. PD SUM PY 2012 VL 28 IS 4 BP 93 EP 95 PG 3 WC Engineering, Multidisciplinary; Engineering, Industrial; Multidisciplinary Sciences; Social Issues SC Engineering; Science & Technology - Other Topics; Social Issues GA V30TV UT WOS:000208839200029 ER PT J AU Zeder, MA AF Zeder, Melinda A. TI THE DOMESTICATION OF ANIMALS SO JOURNAL OF ANTHROPOLOGICAL RESEARCH LA English DT Article DE Domestication; Animals; Behavior; Genetics; Animal sciences; Archaeology AB Over the past 11,000 years humans have brought a wide variety of animals under domestication. Domestic animals belong to all Linnaean animal classes mammals, birds, reptiles, amphibians, fish, insects, and even, arguably, bacteria. Raised for food, secondary products, labor, and companionship, domestic animals have become intricately woven into human economy, society, and religion. Animal domestication is an on-going process, as humans, with increasingly sophisticated technology for breeding and rearing animals in captivity, continue to bring more and more species under their control. Understanding the process of animal domestication and its reciprocal impacts on humans and animal domesticates requires a multidisciplinary approach. This paper brings together recent research in archaeology, genetics, and animal sciences in a discussion of the process of domestication, its impact on animal domesticates, and the various pathways humans and their animal partners have followed into domestication. C1 Smithsonian Inst, Natl Museum Nat Hist, Program Human Ecol & Archaeobiol, Washington, DC 20013 USA. RP Zeder, MA (reprint author), Smithsonian Inst, Natl Museum Nat Hist, Program Human Ecol & Archaeobiol, Washington, DC 20013 USA. EM zederm@si.edu NR 153 TC 23 Z9 23 U1 19 U2 71 PU UNIV NEW MEXICO, DEPT ANTHROPOL PI ALBUQUERQUE PA MSC01 1040, ANTHROPOLOGY 1, UNIV NEW MEXICO, ALBUQUERQUE, NM 87131 USA SN 0091-7710 EI 2153-3806 J9 J ANTHROPOL RES JI J. Anthropol. Res. PD SUM PY 2012 VL 68 IS 2 BP 161 EP 190 PG 30 WC Anthropology SC Anthropology GA V34GZ UT WOS:000209076200001 ER PT J AU De Gracia, C O'Dea, A Rodriguez, F D'Croz, L AF De Gracia, Carlos O'Dea, Aaron Rodriguez, Felix D'Croz, Luis TI Environmental response in the Pacific to aseismic Cocos Ridge subduction (Panama and Costa Rica). SO REVISTA DE BIOLOGIA TROPICAL LA Spanish DT Article DE Talamanca Range; closure of Panama isthmus; upwelling; benthic communities; Pacific Ocean; marine fossils ID EASTERN PACIFIC; ARC RESPONSE; CORAL-REEFS; EXTINCTION; ISTHMUS; CHLOROPHYLL; EMERGENCE; NUTRIENTS; DYNAMICS; AMERICA AB The evolution of the marine communities along the Pacific coast of Central America, may have changed in response to the formation of the Isthmus of Panama. To evaluate the effect of the Aseismic Cocos Ridge (DAC) subduction on the marine benthic communities, we reconstructed benthic assemblages from Neogene fossiliferous formations in Burica and Nicoya peninsulas of Panama and Costa Rica. Paleoecological and paleoenvironmental conditions were reconstructed by comparing community structure from bulk fossil samples with dredge collections from modern Tropical American seas, using principal component analysis. Our results indicate that during the early Pliocene, before the closing of the Isthmus, some oceanic islands existed with moderate upwelling in the Burica region. After the closure, during the late Pliocene and early Pleistocene the collision of the DAC caused an uplift of the seafloor, where water depth of 2 300m became shallow waters of less than 40m depth. Meanwhile, upwelling intensified in the open ocean the uplift that had formed small islands in coastal areas of Burica, creating protected areas and limiting the upwelling effect that was given in open ocean. The subduction of the DAC continued until the islands were joined to the mainland and gradually disappeared, allowing the return of the upwelling. During the middle Pleistocene a second process of accelerated uplift with speeds of 8m/1 000 years provoked again the elevation of the seafloor and later the elevation of the Talamanca Range. The new range formed a barrier that blocked the passage of the Trade winds, created new ecological conditions and optimized and allowed the growth of the best coral reefs in the coasts of the tropical Eastern Pacific (POT) between Panama and Costa Rica. C1 [De Gracia, Carlos; O'Dea, Aaron; Rodriguez, Felix] Smithsonian Trop Res Inst, Panama City 03092, Panama. [D'Croz, Luis] Univ Panama, Fac Ciencias Nat & Exactas, Dept Biol Marina & Limnol, Panama City, Panama. RP De Gracia, C (reprint author), Smithsonian Trop Res Inst, Apartado Postal 0843, Panama City 03092, Panama. EM degraciac@gmail.com; aaronodea@gmail.com; rodriguezf@si.edu; dcrozlc@gmail.com NR 62 TC 0 Z9 0 U1 1 U2 6 PU REVISTA DE BIOLOGIA TROPICAL PI SAN JOSE PA UNIVERSIDAD DE COSTA RICA CIUDAD UNIVERSITARIA, SAN JOSE, 00000, COSTA RICA SN 0034-7744 J9 REV BIOL TROP JI Rev. Biol. Trop. PD JUN PY 2012 VL 60 IS 2 BP 893 EP 908 PG 16 WC Biology SC Life Sciences & Biomedicine - Other Topics GA 168WN UT WOS:000320738700030 PM 23894954 ER PT J AU Anthony, NM Mickala, P Abernethy, KA Atteke, C Bissiengou, P Bruford, MW Dallmeier, F Decaens, T Dudu, A Freedman, A Gonder, MK Hardy, O Hart, J Jeffery, K Johnson, M Pambo, FK Ley, A Korte, L Lahm, SA Lee, M Lowenstein, J Mboumba, JF Bourobou, DN Ngomanda, A Ntie, S Sebag, D Sullivan, J Vanthomme, H Vergnes, V Verheyen, E Zimkus, B AF Anthony, Nicola M. Mickala, Patrick Abernethy, Katharine A. Atteke, Christiane Bissiengou, Pulcherie Bruford, Michael W. Dallmeier, Francisco Decaens, Thibaud Dudu, Akaibe Freedman, Adam Gonder, Mary Katherine Hardy, Olivier Hart, John Jeffery, Kathryn Johnson, Mireille Pambo, Flore Koumba Ley, Alexandra Korte, Lisa Lahm, Sally A. Lee, Michelle Lowenstein, Jake Mboumba, Jean-Francois Bourobou, Dyana Ndiade Ngomanda, Alfred Ntie, Stephan Sebag, David Sullivan, John Vanthomme, Hadrien Vergnes, Virginie Verheyen, Erik Zimkus, Breda TI Biodiversity and conservation genetics research in Central Africa: new approaches and avenues for international collaboration SO CONSERVATION GENETICS RESOURCES LA English DT Article DE Africa; Conservation genetics; Biodiversity AB A five-day international workshop was recently convened at the Universit, des Sciences et Techniques de Masuku in Gabon to enhance international collaboration among Central African, US and European scientists, conservation professionals and policy makers. The overall aims of the workshop were to: (1) discuss emerging priorities in biodiversity and conservation genetics research across Central Africa, and (2) create new networking opportunities among workshop participants. Here we provide a brief overview of the meeting, outline the major recommendations that emerged from it, and provide information on new networking opportunities through the meeting web site. C1 [Anthony, Nicola M.; Ntie, Stephan] Univ New Orleans, Dept Biol Sci, New Orleans, LA 70148 USA. [Mickala, Patrick; Atteke, Christiane; Mboumba, Jean-Francois] Univ Sci & Tech Masuku, Dept Biol, Franceville, Gabon. [Abernethy, Katharine A.] Univ Stirling, Sch Nat Sci, Stirling FK9 4LA, Scotland. [Bissiengou, Pulcherie] Ctr Natl Rech Sci & Technol, Inst Pharmacopee & Med Tradit, Libreville, Gabon. [Bruford, Michael W.; Johnson, Mireille] Cardiff Univ, Sch Biosci, Organisms & Environm Div, Cardiff CF10 3AX, S Glam, Wales. [Dallmeier, Francisco; Lee, Michelle; Vanthomme, Hadrien] Smithsonian Conservat Biol Inst, Ctr Conservat Educ & Sustainabil, Washington, DC 20013 USA. [Decaens, Thibaud] Univ Rouen, Lab ECODIV, EA 1293, SFR SCALE, F-76130 Mont St Aignan, France. [Dudu, Akaibe] Univ Kisangani, Dept Ecol & Gest Ressources Anim, Kisangani, Zaire. [Freedman, Adam] Univ Calif Los Angeles, Dept Ecol & Evolutionary Biol, Los Angeles, CA 90092 USA. [Gonder, Mary Katherine] SUNY Albany, Dept Biol Sci, Albany, NY 12222 USA. [Hardy, Olivier; Ley, Alexandra] Univ Libre Brussels, B-1050 Brussels, Belgium. [Hart, John] Lukuru Fdn, Projet Tshuapa Lomami Lualaba, Kinshasa, Zaire. [Jeffery, Kathryn] Agence Natl Parcs Nationaux, Libreville, Gabon. [Korte, Lisa] Smithsonian Conservat Biol Inst, Ctr Conservat Educ & Sustainabil, Gabon Biodivers Program, Gamba, Gabon. [Lahm, Sally A.] Ecol & Environm Inc, Arlington, VA 22209 USA. [Lee, Michelle] Univ Oxford, Dept Zool, Oxford OX1 3PS, England. [Lee, Michelle; Ngomanda, Alfred] Ctr Natl Rech Sci & Technol, Inst Rech Ecol Trop, Libreville, Gabon. [Lowenstein, Jake] Columbia Univ, Dept Ecol Evolut & Environm Biol, New York, NY 10027 USA. [Lowenstein, Jake] Amer Museum Nat Hist, New York, NY 10024 USA. [Mboumba, Jean-Francois] Univ Rennes 1, Museum Natl Hist Nat, Equipe Biodivers & Gest Terr, UMR 7204, Rennes, France. [Bourobou, Dyana Ndiade] Ctr Natl Rech Sci & Technol, Inst Rech Agron & Forestieres, Libreville, Gabon. [Sebag, David] Univ Rouen, Lab M2C, UMR CNRS 6143, SFR SCALE, F-76130 Mont St Aignan, France. [Sullivan, John] Cornell Univ, Museum Vertebrates, Ithaca, NY 14850 USA. [Vergnes, Virginie] Max Planck Inst Evolutionary Anthropol, Wild Chimpanzee Fdn, D-04103 Leipzig, Germany. [Verheyen, Erik] Royal Belgian Inst Nat Sci, Vertebrate Dept, B-1000 Brussels, Belgium. [Zimkus, Breda] Harvard Univ, Museum Comparat Zool, Cambridge, MA 02138 USA. RP Anthony, NM (reprint author), Univ New Orleans, Dept Biol Sci, New Orleans, LA 70148 USA. EM nanthony@uno.edu RI SEBAG, David/A-4139-2008; Jeffery, Kathryn/G-2530-2013; Bruford, Michael/D-3750-2009; OI Abernethy, Katharine/0000-0002-0393-9342; SEBAG, David/0000-0002-6446-6921; Jeffery, Kathryn/0000-0002-2632-0008; Bruford, Michael/0000-0001-6357-6080; Freedman, Adam /0000-0003-4714-3925 FU NSF OISE [0968587] FX This workshop was funded by NSF OISE 0968587. Meeting participants would like to thank the Universite of Sciences and Techniques de Masuku for hosting the workshop and its Chancellor (Dr. Isaac Mouaragadja) for his support. NR 3 TC 3 Z9 3 U1 1 U2 17 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 1877-7252 J9 CONSERV GENET RESOUR JI Conserv. Genet. Resour. PD JUN PY 2012 VL 4 IS 2 BP 523 EP 525 DI 10.1007/s12686-011-9554-9 PG 3 WC Biodiversity Conservation; Genetics & Heredity SC Biodiversity & Conservation; Genetics & Heredity GA 935QZ UT WOS:000303536400076 ER PT J AU Cramer, KL Jackson, JBC Angioletti, CV Leonard-Pingel, J Guilderson, TP AF Cramer, Katie L. Jackson, Jeremy B. C. Angioletti, Christopher V. Leonard-Pingel, Jill Guilderson, Thomas P. TI Anthropogenic mortality on coral reefs in Caribbean Panama predates coral disease and bleaching SO ECOLOGY LETTERS LA English DT Article DE Acropora cervicornis; Bocas del Toro; climate change; corals; Dendostrea frons; historical ecology; land use; molluscs; shifting baselines ID PHASE-SHIFTS; ENVIRONMENTAL-STRESS; CLIMATE-CHANGE; WEST-INDIES; ECOSYSTEMS; RADIOCARBON; ECOLOGY; SCALE; CONVERGENCE; DEGRADATION AB Ecology Letters (2012) Abstract Caribbean reef corals have declined precipitously since the 1980s due to regional episodes of bleaching, disease and algal overgrowth, but the extent of earlier degradation due to localised historical disturbances such as land clearing and overfishing remains unresolved. We analysed coral and molluscan fossil assemblages from reefs near Bocas del Toro, Panama to construct a timeline of ecological change from the 19th centurypresent. We report large changes before 1960 in coastal lagoons coincident with extensive deforestation, and after 1960 on offshore reefs. Striking changes include the demise of previously dominant staghorn coral Acropora cervicornis and oyster Dendrostrea frons that lives attached to gorgonians and staghorn corals. Reductions in bivalve size and simplification of gastropod trophic structure further implicate increasing environmental stress on reefs. Our paleoecological data strongly support the hypothesis, from extensive qualitative data, that Caribbean reef degradation predates coral bleaching and disease outbreaks linked to anthropogenic climate change. C1 [Cramer, Katie L.; Jackson, Jeremy B. C.; Angioletti, Christopher V.; Leonard-Pingel, Jill] Univ Calif San Diego, Scripps Inst Oceanog, Ctr Marine Biodivers & Conservat, La Jolla, CA 92093 USA. [Cramer, Katie L.; Jackson, Jeremy B. C.] Smithsonian Trop Res Inst, Ctr Trop Paleoecol & Archaeol, Balboa, Panama. [Guilderson, Thomas P.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Guilderson, Thomas P.] Univ Calif Santa Cruz, Inst Marine Sci, Santa Cruz, CA 95064 USA. RP Cramer, KL (reprint author), Univ Calif San Diego, Scripps Inst Oceanog, Ctr Marine Biodivers & Conservat, La Jolla, CA 92093 USA. EM katie.cramer@gmail.com NR 43 TC 33 Z9 33 U1 3 U2 82 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1461-023X J9 ECOL LETT JI Ecol. Lett. PD JUN PY 2012 VL 15 IS 6 BP 561 EP 567 DI 10.1111/j.1461-0248.2012.01768.x PG 7 WC Ecology SC Environmental Sciences & Ecology GA 937NW UT WOS:000303666200007 PM 22462739 ER PT J AU Staniszewski, Z Aikin, RW Amiri, M Benton, SJ Bischoff, C Bock, JJ Bonetti, JA Brevik, JA Burger, B Dowell, CD Duband, L Filippini, JP Golwala, SR Halpern, M Hasselfield, M Hilton, G Hristov, VV Irwin, K Kovac, JM Kuo, CL Lueker, M Montroy, T Nguyen, HT Ogburn, RW O'Brient, R Orlando, A Pryke, C Reintsema, C Ruhl, JE Schwarz, R Sheehy, C Stokes, S Thompson, KL Teply, G Tolan, JE Turner, AD Vieregg, AG Wilson, P Wiebe, D Wong, CL AF Staniszewski, Z. Aikin, R. W. Amiri, M. Benton, S. J. Bischoff, C. Bock, J. J. Bonetti, J. A. Brevik, J. A. Burger, B. Dowell, C. D. Duband, L. Filippini, J. P. Golwala, S. R. Halpern, M. Hasselfield, M. Hilton, G. Hristov, V. V. Irwin, K. Kovac, J. M. Kuo, C. L. Lueker, M. Montroy, T. Nguyen, H. T. Ogburn, R. W. O'Brient, R. Orlando, A. Pryke, C. Reintsema, C. Ruhl, J. E. Schwarz, R. Sheehy, C. Stokes, S. Thompson, K. L. Teply, G. Tolan, J. E. Turner, A. D. Vieregg, A. G. Wilson, P. Wiebe, D. Wong, C. L. TI The Keck Array: A Multi Camera CMB Polarimeter at the South Pole SO JOURNAL OF LOW TEMPERATURE PHYSICS LA English DT Article DE Transition edge sensor (TES) arrays; Cosmology; Cosmic microwave background; Inflation AB The Keck array is a new multi-camera Cosmic Microwave Background (CMB) polarimeter. Each camera contains 256 polarization pairs of antenna-coupled transition edge sensor (TES) bolometers. We recently deployed three of five cameras at the geographic South Pole, and plan to deploy the final two cameras in early 2012. This new telescope is an ideal instrument to search for the primordial B-mode polarization signal imprinted in the CMB by inflationary gravitational waves. We will discuss the design of the detectors and receivers, the status of current observations, and report on progress toward upgrading the instrument with the full compliment of polarized receivers. C1 [Staniszewski, Z.; Aikin, R. W.; Bock, J. J.; Brevik, J. A.; Dowell, C. D.; Filippini, J. P.; Golwala, S. R.; Hristov, V. V.; Lueker, M.; Nguyen, H. T.; O'Brient, R.; Orlando, A.; Teply, G.] CALTECH, Div Phys Math & Astron, Pasadena, CA 91125 USA. [Staniszewski, Z.; Bock, J. J.; Bonetti, J. A.; Dowell, C. D.; Nguyen, H. T.; Turner, A. D.; Wilson, P.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Kuo, C. L.; Ogburn, R. W.; Stokes, S.; Thompson, K. L.; Tolan, J. E.] KIPAC, Menlo Pk, CA 94025 USA. [Amiri, M.; Halpern, M.; Hasselfield, M.; Wiebe, D.] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V5Z 1M9, Canada. [Benton, S. J.; Burger, B.] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada. [Kuo, C. L.; Ogburn, R. W.; Stokes, S.; Thompson, K. L.; Tolan, J. E.] Stanford Univ, Stanford, CA 94305 USA. [Duband, L.] CEA Grenoble, Serv Basses Temp, F-38054 Grenoble, France. [Hilton, G.; Irwin, K.; Reintsema, C.] NIST Quantum Devices Grp, Boulder, CO 80305 USA. [Bischoff, C.; Kovac, J. M.; Schwarz, R.; Vieregg, A. G.; Wong, C. L.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Sheehy, C.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA. [Pryke, C.; Sheehy, C.] Univ Minnesota, Minneapolis, MN 55455 USA. [Montroy, T.; Ruhl, J. E.] Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA. RP Staniszewski, Z (reprint author), CALTECH, Div Phys Math & Astron, Pasadena, CA 91125 USA. EM zks@caltech.edu RI Vieregg, Abigail/D-2287-2012; OI Orlando, Angiola/0000-0001-8004-5054; Bischoff, Colin/0000-0001-9185-6514 FU NASA FX The following individuals acknowledge additional support: Z. Staniszewski from the NASA Postdoctoral Program. NR 7 TC 17 Z9 17 U1 1 U2 4 PU SPRINGER/PLENUM PUBLISHERS PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0022-2291 J9 J LOW TEMP PHYS JI J. Low Temp. Phys. PD JUN PY 2012 VL 167 IS 5-6 BP 827 EP 833 DI 10.1007/s10909-012-0510-1 PN 2 PG 7 WC Physics, Applied; Physics, Condensed Matter SC Physics GA 934QY UT WOS:000303461600041 ER PT J AU Guzman, HM Breedy, O AF Guzman, Hector M. Breedy, Odalisca TI Pacifigorgia marviva (Anthozoa: Octocorallia) a new species from Coiba National Park, Pacific Panama SO JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM LA English DT Article DE Octocorallia; Gorgoniidae; Pacifigorgia; Coiba National Park; eastern Pacific; Panama ID BIODIVERSITY AB Pacifigorgia marviva, a new shallow-water species of the family Gorgoniidae, was found in Coiba National Park, Pacific Panama at 35-40 m depth. It is characterized by having white to cream, small, erect colonies composed of 1-4 fronds, stems short or absent network irregular and open without fan midribs, and polyp mounds slightly raised and sparsely distributed. All sclerites are colourless. Coenenchymal sclerites mostly composed of long spindles reaching up to 0.25 mm in length, and long and thin anthocodial rods, up to 0.16 mm in length. Morphological characters are analysed and illustrated. Scanning electron microscopy was used for sclerite study. The new species is herein described and compared with other similar species reported from the eastern Pacific. Pacifigoria marviva increases the number of Pacifigorgia species to 35; 20 in Panama representing 57% of the genus in the eastern Pacific, followed by Costa Rica and Ecuador with 14 and 10 species, respectively. C1 [Guzman, Hector M.; Breedy, Odalisca] Smithsonian Trop Res Inst, Balboa, Ancon, Panama. [Breedy, Odalisca] Univ Costa Rica, Ctr Invest Estruct Microscop, Ctr Invest Ciencias Mar & Limnol, San Jose, Costa Rica. RP Guzman, HM (reprint author), Smithsonian Trop Res Inst, POB 0843-03092, Balboa, Ancon, Panama. EM odalisca@racsa.co.cr FU Secretaria Nacional de Ciencia y Tecnologia of Panama [PNCOIBA08-024]; Smithsonian Tropical Research Institute FX We are grateful to Phil Alderslade (CSIRO Marine and Atmospheric Research, Tasmania), Stephen Cairns (Museum of Natural History, Washington, DC), Leen van Ofwegen (Netherlands Centre for Biodiversity Naturalis, Leiden), and Sergio Vargas (Molecular Geo- and Palaeobiology, Geobiology and Palaeontology, LMU Munchen) for critical review of the manuscript. We thank Percy Denyer (University of Costa Rica) for making the figures. This work was supported by the Secretaria Nacional de Ciencia y Tecnologia of Panama (grant number PNCOIBA08-024) and the Smithsonian Tropical Research Institute. NR 19 TC 3 Z9 3 U1 0 U2 6 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA SN 0025-3154 EI 1469-7769 J9 J MAR BIOL ASSOC UK JI J. Mar. Biol. Assoc. U.K. PD JUN PY 2012 VL 92 IS 4 SI SI BP 693 EP 698 DI 10.1017/S0025315411000373 PG 6 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA 939TJ UT WOS:000303837600006 ER PT J AU Erftemeijer, PLA Hagedorn, M Laterveer, M Craggs, J Guest, JR AF Erftemeijer, Paul L. A. Hagedorn, Mary Laterveer, Michael Craggs, Jamie Guest, James R. TI Effect of suspended sediment on fertilization success in the scleractinian coral Pectinia lactuca SO JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM LA English DT Article DE Pectinia lactuca; coral spawning; fertilization success; turbidity; suspended sediment; dredging ID ACROPORA-MILLEPORA EHRENBERG; GREAT-BARRIER-REEF; LARVAL METAMORPHOSIS; REPRODUCTION; INHIBITION; MANAGEMENT; SETTLEMENT; ORGANISMS; FECUNDITY AB The effect of increased levels of suspended sediment on fertilization success in the scleractinian coral Pectinia lactuca was investigated in a laboratory experiment following a mass coral spawning event on reefs off Singapore. Egg-sperm bundles were collected from tank-spawned coral colonies collected from the field several days prior to the anticipated mass spawning. Eggs and sperm from each colony were separated and distributed systematically across replicated treatments (N = 9) with three concentrations of fine suspended sediment. Spawning and embryo development in Pectinia lactuca followed a pattern similar to other scleractinian coral species. There was a significant effect of increased suspended sediment concentration on fertilization success (P < 0.05). Both high-(169 mg l(-1)) and medium-(43 mg l(-1)) suspended sediment treatments decreased fertilization success compared to controls. These results imply that increased turbidity levels (whether chronic, such as in the waters around Singapore, or short-term, caused by a dredging operation)-when coinciding with the coral spawning season-may affect the reproductive success of corals and compromise coral recruitment and recovery of degraded reefs. C1 [Guest, James R.] Natl Univ Singapore, Dept Biol Sci, Marine Biol Lab, Singapore 117543, Singapore. [Erftemeijer, Paul L. A.] Deltares, NL-2600 MH Delft, Netherlands. [Hagedorn, Mary] Univ Hawaii, Hawaii Inst Marine Biol, Kaneohe, HI 96744 USA. [Laterveer, Michael] Rotterdam Zoo, NL-3000 AM Rotterdam, Netherlands. [Craggs, Jamie] Horniman Museum & Gardens, London SE23 3PQ, England. [Hagedorn, Mary] Smithsonian Conservat Biol Inst, Dept Reprod Sci, Washington, DC 20008 USA. RP Guest, JR (reprint author), Natl Univ Singapore, Dept Biol Sci, Marine Biol Lab, Singapore 117543, Singapore. EM James.Guest@nus.edu.sg RI Guest, James/D-5179-2011 OI Guest, James/0000-0002-9714-9009 FU Ecoshape-Building with Nature; Singapore-Delft Water Alliance (SDWA); Singapore Ministry of Education [R-154-000-432-112] FX We acknowledge Ecoshape-Building with Nature for their financial support for the SECORE coral breeding workshop (30 March-8 April 2010) in Singapore. The Tropical Marine Science Institute of the National University of Singapore and Underwater World Singapore are thanked for help with preparations, facilities and logistics during the workshop. Astrid Kramer (Hydronamic) participated in the laboratory experiments and data analysis. We appreciate the help of all other participants of the 5th SECORE workshop with the field and laboratory work. The authors acknowledge the support & contributions of the Singapore-Delft Water Alliance (SDWA) and Singapore Ministry of Education Academic Research Fund Tier 1 FRC Grant (Grant number: R-154-000-432-112). The research presented here was carried out as part of the SDWA Marine & Coastal Research Programme (Theme 2): 'Dredging and infrastructure development near critical marine ecosystems' (R-264-001-001-272) and presented at the Euro ISRS Symposium 2010: 'Reefs in a Changing Environment', 13-17 December 2010, Wageningen, The Netherlands. We thank Bert Hoeksema and Pippa Mansell for allowing us to submit our paper for publication in this special issue of JMBA. NR 32 TC 12 Z9 12 U1 3 U2 24 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA SN 0025-3154 J9 J MAR BIOL ASSOC UK JI J. Mar. Biol. Assoc. U.K. PD JUN PY 2012 VL 92 IS 4 SI SI BP 741 EP 745 DI 10.1017/S0025315411000944 PG 5 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA 939TJ UT WOS:000303837600012 ER PT J AU Whigham, DF Walker, CM King, RS Baird, SJ AF Whigham, Dennis F. Walker, Coowe M. King, Ryan S. Baird, Steven J. TI Multiple Scales of Influence on Wetland Vegetation Associated with Headwater Streams in Alaska, USA SO WETLANDS LA English DT Article DE Alaska; Wetland; Streamside; Calamagrostis canadensis; Kenai Peninsula; Headwater streams ID SPRUCE BEETLE OUTBREAK; CALAMAGROSTIS-CANADENSIS; KENAI PENINSULA; WHITE SPRUCE; RIPARIAN RESERVES; BLUEJOINT GRASS; LITTER INPUTS; NITROGEN; WATER; REGENERATION AB Vegetation of wetlands adjacent to headwater streams on the Kenai Lowlands was dominated by , indicating that it is a keystone species that influences stream-wetland interactions across a wide range of geomorphic settings from which headwater streams have their origin. We sampled 30 sites as part of a project to determine the relationships between landscape features and the biological and chemical characteristics of headwater streams and their associated wetlands. In this paper we consider vegetation in wetlands adjacent to headwater streams. was the only species that occurred at all sites and only a few species were widespread and abundant across the range of sites sampled. Nonmetric multidimensional scaling of species importance values indicated that the distribution of sites and species was primarily related to stream-reach scale environmental and biological factors. Sixteen stream-reach factors were significantly correlated with the distribution of sites and species on one axis of the ordination. Headwater streams that were located in relatively flat areas with extensive wetlands had species characteristic of nutrient poor wetlands and sites located in steep valleys with narrow wetlands had species characteristic of uplands and wetlands on mineral soils. The distribution of sites and species on the second ordination axis was interpreted to be a response to biological interactions; primarily the negative relationship between and the diversity of other species. We concluded that large-scale watershed features of the landscape are less important than local scale factors in determining the characteristics of vegetation in headwater stream-wetland complexes in the Kenai Lowlands. There was no evidence, however, that differences in the stream-reach scale conditions across the study sites resulted in distinct plant communities associated with the headwater wetlands even though the headwater streams had their origin in different landscape settings. C1 [Whigham, Dennis F.] Smithsonian Environm Res Ctr, Edgewater, MD 21037 USA. [Walker, Coowe M.; Baird, Steven J.] Kachemak Bay Res Reserve, Homer, AK 99603 USA. [King, Ryan S.] Baylor Univ, Dept Biol, Ctr Reservoir & Aquat Syst Res, Waco, TX 76798 USA. RP Whigham, DF (reprint author), Smithsonian Environm Res Ctr, POB 28,647 Contees Wharf Rd, Edgewater, MD 21037 USA. EM whighamd@si.edu OI Whigham, Dennis/0000-0003-1488-820X FU US EPA FX The project was funded through US EPA's Wetland Program Development Grant program. Staff of the Kachemak Bay Research Reserve (Amy Alderfer, Kim Donohue, Conrad Field) and several volunteers (Jennifer Brewer, Shan Burson, Patrick Dougherty, Dwayne Evans, Rachel Hovel, Megan Murphy, Caitlin Schott, Simeon Smith, Scott Thompson) assisted with various parts of the project. Jeff Back deserves special recognition because of his good spirits and efforts to keep the field teams on course and on schedule under a wide range of climate conditions. We also thank the Ninilchik Tribal Association and private landowners for providing access to sampling sites. We especially thank Phil North for his encouragement, support and efforts to make the project a reality. We thank Jay O'Neill, Kathy Boomer, Mike Gracz and three anonymous reviewers for their editorial suggestions. NR 50 TC 4 Z9 4 U1 0 U2 15 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0277-5212 J9 WETLANDS JI Wetlands PD JUN PY 2012 VL 32 IS 3 BP 411 EP 422 DI 10.1007/s13157-012-0274-z PG 12 WC Ecology; Environmental Sciences SC Environmental Sciences & Ecology GA 940IV UT WOS:000303884100002 ER PT J AU Langley, JA Megonigal, JP AF Langley, J. Adam Megonigal, J. Patrick TI Field-Based Radiometry to Estimate Tidal Marsh Plant Growth in Response to Elevated CO2 and Nitrogen Addition SO WETLANDS LA English DT Article DE Coastal wetland; Distichlis spicata; MSAVI2; ndvi; Productivity; Schoenoplectus americanus; Spartina patens ID ADJUSTED VEGETATION INDEX; SPECTRAL REFLECTANCE; AQUATIC VEGETATION; ATMOSPHERIC CO2; MONITOR CHANGES; SALT MARSHES; DIVERSITY; PHENOLOGY; SALINITY; WETLANDS AB Plant growth is one of the most important variables to measure in long-term research plots, but the negative effects of labor-intensive and destructive sampling can restrict frequent assessment of plant biomass. Here, we used field-based, active radiometry to assess plant biomass in an ongoing, experimental manipulation of atmospheric CO2 and soil nitrogen availability in a tidal wetland. We compared the ability of several radiometric vegetation indices (VIs) to predict total plant biomass and that of two plant functional groups, sedges and grasses. All VIs estimated total biomass better in July than in October, when senescence had begun. All VIs correlated strongly and positively to grass biomass (average = 0.83) and weakly or negatively to sedge biomass ( = -0.30). Modified soil-adjusted vegetation index (MSAVI2) performed well through space (average July total biomass = 0.83) and time (across four sampling times = 0.83) and predicted CO2 and nitrogen treatment effect sizes. In conjunction with conventional biomass measurements field-based, active radiometry provides (1) a frequent estimate of biomass that can reveal plant responses to environmental stimuli that would otherwise escape detection, and (2) a viable alternative to frequent destructive sampling for assessing growth of fine-stemmed species such as and .Spartina patens and Distichlis spicata. C1 [Langley, J. Adam; Megonigal, J. Patrick] Smithsonian Environm Res Ctr, Edgewater, MD 21037 USA. [Langley, J. Adam] Villanova Univ, Dept Biol, Villanova, PA 19085 USA. RP Langley, JA (reprint author), Smithsonian Environm Res Ctr, POB 28, Edgewater, MD 21037 USA. EM adam.langley@villanova.edu; megonigalp@si.edu FU USGS [06ERAG0011]; US Department of Energy [DE-FG02-97ER62458]; US Department of Energy's Office of Science (BER) through the Coastal Center of the National Institute of Climate Change Research at Tulane University; National Science Foundation; Smithsonian Institution FX We thank J. Duls, J, Keller, M. Sigrist, G. Peresta, B. Drake, E. Sage, A. Martin, D. McKinley, and N. Mudd for the construction and maintenance of the field site at the Smithsonian Climate Change Facility. The field study was supported by the USGS Global Change Research Program (cooperative agreement 06ERAG0011), the US Department of Energy (grant DE-FG02-97ER62458), the US Department of Energy's Office of Science (BER) through the Coastal Center of the National Institute of Climate Change Research at Tulane University, the National Science Foundation Research Experience for Undergraduates (REU) Program, and the Smithsonian Institution. NR 33 TC 2 Z9 2 U1 2 U2 29 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0277-5212 J9 WETLANDS JI Wetlands PD JUN PY 2012 VL 32 IS 3 BP 571 EP 578 DI 10.1007/s13157-012-0292-x PG 8 WC Ecology; Environmental Sciences SC Environmental Sciences & Ecology GA 940IV UT WOS:000303884100015 ER PT J AU Leray, M Boehm, JT Mills, SC Meyer, CP AF Leray, M. Boehm, J. T. Mills, S. C. Meyer, C. P. TI Moorea BIOCODE barcode library as a tool for understanding predator-prey interactions: insights into the diet of common predatory coral reef fishes SO CORAL REEFS LA English DT Article DE Trophic interactions; Diet analysis; Food web; DNA identification; Hawkfish; Squirrelfish ID INVERTEBRATE PREDATORS; GUT CONTENTS; DNA; DIVERSITY; PRIMERS AB Identifying species involved in consumer-resource interactions is one of the main limitations in the construction of food webs. DNA barcoding of prey items in predator guts provides a valuable tool for characterizing trophic interactions, but the method relies on the availability of reference sequences to which prey sequences can be matched. In this study, we demonstrate that the COI sequence library of the Moorea BIOCODE project, an ecosystem-level barcode initiative, enables the identification of a large proportion of semi-digested fish, crustacean and mollusks found in the guts of three Hawkfish and two Squirrelfish species. While most prey remains lacked diagnostic morphological characters, 94% of the prey found in 67 fishes had > 98% sequence similarity with BIOCODE reference sequences. Using this species-level prey identification, we demonstrate how DNA barcoding can provide insights into resource partitioning, predator feeding behaviors and the consequences of predation on ecosystem function. C1 [Leray, M.; Mills, S. C.] Univ Perpignan, Lab Excellence Corail USR CNRS EPHE 3278, CRIOBE CBETM, F-66860 Perpignan, France. [Leray, M.; Meyer, C. P.] Smithsonian Inst, Dept Invertebrate Zool, Natl Museum Nat Hist, Washington, DC 20013 USA. [Boehm, J. T.] CUNY Queens Coll, Dept Biol, Flushing, NY 11367 USA. [Boehm, J. T.] CUNY, Grad Ctr, New York, NY 10016 USA. RP Leray, M (reprint author), Univ Perpignan, Lab Excellence Corail USR CNRS EPHE 3278, CRIOBE CBETM, 56 Ave Paul Alduy, F-66860 Perpignan, France. EM leray.upmc@gmail.com RI Mills, Suzanne/K-5538-2012 FU Gordon and Betty Moore Foundation; Smithsonian Institution; France American Cultural Exchange program (FACE-Partner University Fund) FX We thank the BIOCODE teams who collected marine invertebrates and fish specimen in 2006, the "Centre de Recherche Insulaire et Observatoire de l'Environnement (CRIOBE) de Moorea'', the Richard B. Gump field station in Moorea for logistical support and three anonymous reviewers for helpful comments on the manuscript. We also greatly acknowledge the Gordon and Betty Moore Foundation, Smithsonian Institution Fellowship Program and France American Cultural Exchange program (FACE-Partner University Fund) for financial support. NR 25 TC 12 Z9 14 U1 3 U2 50 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0722-4028 J9 CORAL REEFS JI Coral Reefs PD JUN PY 2012 VL 31 IS 2 BP 383 EP 388 DI 10.1007/s00338-011-0845-0 PG 6 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA 934ND UT WOS:000303450100008 ER PT J AU Rick, TC Fitzpatrick, SM AF Rick, Torben C. Fitzpatrick, Scott M. TI Archaeology and coastal conservation SO JOURNAL OF COASTAL CONSERVATION LA English DT Editorial Material ID ECOSYSTEMS C1 [Rick, Torben C.] Smithsonian Inst, Dept Anthropol, Natl Museum Nat Hist, Archaeobiol Program, Washington, DC 20560 USA. [Fitzpatrick, Scott M.] N Carolina State Univ, Dept Sociol & Anthropol, Raleigh, NC 27695 USA. RP Rick, TC (reprint author), Smithsonian Inst, Dept Anthropol, Natl Museum Nat Hist, Archaeobiol Program, Washington, DC 20560 USA. EM rickt@si.edu NR 13 TC 1 Z9 1 U1 0 U2 3 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1400-0350 EI 1874-7841 J9 J COAST CONSERV JI J. Coast. Conserv. PD JUN PY 2012 VL 16 IS 2 BP 135 EP 136 DI 10.1007/s11852-010-0121-4 PG 2 WC Biodiversity Conservation; Environmental Sciences; Marine & Freshwater Biology; Water Resources SC Biodiversity & Conservation; Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA 935SS UT WOS:000303541400001 ER PT J AU Reeder, LA Rick, TC Erlandson, JM AF Reeder, Leslie A. Rick, Torben C. Erlandson, Jon M. TI Our disappearing past: a GIS analysis of the vulnerability of coastal archaeological resources in California's Santa Barbara Channel region SO JOURNAL OF COASTAL CONSERVATION LA English DT Article DE Sea level rise; Coastal erosion; Urban development; Cultural resource vulnerability; GIS ID SEA-LEVEL RISE; MARITIME CULTURES; BRUUN RULE; EROSION; ECOSYSTEMS; COLLAPSE; HISTORY; FUTURE; INDEX AB Coastal archaeological resources around the world often coincide with dense contemporary human populations and a rapidly changing physical environment. Projected sea level rise and urban expansion during the 21(st) century threaten to destroy much of our global coastal archaeological heritage. In this study, we adapt an environmental vulnerability analysis to quantify the threats of modern development and sea level rise on archaeological sites in California's Santa Barbara Channel region. Using spatial and statistical techniques, we create a Cultural Resource Vulnerability Index that combines environmental factors, current and projected urban footprints, and archaeological site positioning. We illustrate the importance of this method for targeting threatened archaeological sites for mitigation and salvage research. In the process, we highlight the significance of coastal archaeological sites for helping better understand contemporary environmental and cultural issues, underscoring the need to preserve or salvage these sites for their significant research value. C1 [Reeder, Leslie A.] So Methodist Univ, Dept Anthropol, Dallas, TX 75275 USA. [Rick, Torben C.] Smithsonian Inst, Dept Anthropol, Natl Museum Nat Hist, Archaeobiol Program, Washington, DC 20013 USA. [Erlandson, Jon M.] Univ Oregon, Museum Nat & Cultural Hist, Eugene, OR 97403 USA. [Erlandson, Jon M.] Univ Oregon, Dept Anthropol, Eugene, OR 97403 USA. RP Reeder, LA (reprint author), So Methodist Univ, Dept Anthropol, Dallas, TX 75275 USA. EM lreeder@smu.edu; rickt@si.edu; jerland@uoregon.edu OI Erlandson, Jon/0000-0002-4705-4319 NR 50 TC 6 Z9 6 U1 3 U2 27 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1400-0350 EI 1874-7841 J9 J COAST CONSERV JI J. Coast. Conserv. PD JUN PY 2012 VL 16 IS 2 BP 187 EP 197 DI 10.1007/s11852-010-0131-2 PG 11 WC Biodiversity Conservation; Environmental Sciences; Marine & Freshwater Biology; Water Resources SC Biodiversity & Conservation; Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA 935SS UT WOS:000303541400006 ER PT J AU Fishelson, L Baldwin, CC Hastings, PA AF Fishelson, Lev Baldwin, Carole C. Hastings, Philip A. TI Comparison of the oropharyngeal cavity in the Starksiini (Teleostei: Blenniiformes: Labrisomidae): Taste buds and teeth, including a comparison with closely-related genera SO JOURNAL OF MORPHOLOGY LA English DT Article DE Starksiini fishes; oropharyngeal cavity; taste buds; dentition ID FISH; SPECIALIZATIONS; PISCES; MOUTH; LIPS AB The present study describes the distribution of taste buds and teeth in the oropharyngeal cavity of 13 species of adult (18-60 mm SL) Starksiini fishes inhabiting subtidal waters of the Neotropical region. Four types of taste buds described previously in other fish groups were observed within the oropharyngeal cavity, of which type I, situated on prominent protruding papillae, is the most common. The number of taste buds in this cavity varies considerably, ranging from ca. 202 in Starksia lepicoelia to ca. 770 in S. sluiteri. In all the studied species, taste buds are more numerous on the posterior (160-396) than on the anterior (42-294) part of the oropharyngeal cavity. The presence of different numbers of taste buds in different Starksiini species of the same standard length suggests that numbers of taste buds are not directly correlated with size and may be species-specific. Teeth are found on the premaxilla, dentary, vomer, palatine (in some species) and the upper and lower pharyngeal jaws (third pharyngobranchials and fifth ceratobranchials, respectively); the form and number of teeth and taste buds on each of these sites differs among the various species of Starksiini and between them and closely related species of the labrisomid tribes Labrisomini, Mnierpini, and Paraclinini. The results thus suggest potential systematic value in certain features of the oropharyngeal cavity for blenniiform fishes. It is also shown that benthic-feeding omnivorous fishes have higher densities of taste buds than piscivorous fishes. A possible correlation among numbers of taste buds, their positions in the oropharyngeal cavity, and other parameters is discussed. J. Morphol., 2012. (C) 2012 Wiley Periodicals, Inc. C1 [Fishelson, Lev] Tel Aviv Univ, Dept Zool, IL-69978 Tel Aviv, Israel. [Baldwin, Carole C.] Natl Museum Nat Hist, Smithsonian Inst, Div Fishes, Washington, DC 20560 USA. [Hastings, Philip A.] Univ Calif San Diego, Div Marine Biol Res, Scripps Inst Oceanog, San Diego, CA 92103 USA. RP Fishelson, L (reprint author), Tel Aviv Univ, Dept Zool, IL-69978 Tel Aviv, Israel. EM fishelv@post.tau.ac.il NR 34 TC 2 Z9 2 U1 0 U2 2 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0362-2525 J9 J MORPHOL JI J. Morphol. PD JUN PY 2012 VL 273 IS 6 BP 618 EP 628 DI 10.1002/jmor.20008 PG 11 WC Anatomy & Morphology SC Anatomy & Morphology GA 930SI UT WOS:000303159400006 PM 22234958 ER PT J AU Ivanenko, VN Corgosinho, PHC Ferrari, F Sarradin, PM Sarrazin, J AF Ivanenko, Viatcheslav N. Corgosinho, Paulo H. C. Ferrari, Frank Sarradin, Pierre-Marie Sarrazin, Jozee TI Microhabitat distribution of Smacigastes micheli (Copepoda: Harpacticoida: Tegastidae) from deep-sea hydrothermal vents at the Mid-Atlantic Ridge, 37 degrees N (Lucky Strike), with a morphological description of its nauplius SO MARINE ECOLOGY-AN EVOLUTIONARY PERSPECTIVE LA English DT Article DE Confocal microscopy; Copepoda; deep-sea hydrothermal vent; ecology; Harpacticoida; microhabitats; Mid-Atlantic Ridge; morphology; nauplius; physico-chemical conditions; Tegastidae ID EAST PACIFIC RISE; MUSSEL AGGREGATIONS; NORTHEAST PACIFIC; FALCATUS NORMAN; FUCA RIDGE; CRUSTACEA; SIPHONOSTOMATOIDA; EDIFICE; OCEAN; GENUS AB Abundant nauplii and copepodid stages attributed to Smacigastes micheli Ivanenko & Defaye (Crustacea: Copepoda: Harpacticoida: Tegastidae) were collected during the MoMARETO cruise (2006) on the Eiffel Tower edifice, the species type locality at the Lucky Strike vent field (37 degrees N) of the Mid-Atlantic Ridge at a depth of 1698 m. Specimens were sampled within different faunal assemblages dominated by either Bathymodiolus azoricus mussels or Mirocaris fortunata shrimps and the physico-chemical conditions of their related microhabitats were characterized. A new preparation method for examination of copepod nauplii with confocal microscopy was developed and applied to the specimens. The description of the sixth naupliar stage of S. micheli revealed a number of distinctions from the only known last naupliar stage of the tegastid copepod Tegastes falcatus living associated with a shallow water bryozoan. Morphological features and ecological observations suggest that S. micheli copepods could be feeding on the thick microbial mats that cover different surfaces on the Eiffel Tower edifice. The nauplii, copepodids and adults of S. micheli were found in >80% of the microhabitats sampled. These microhabitats were characterized by temperatures varying from 4.8 to 7.5 degrees C representing low hydrothermal inputs. Canonical analysis shows that the relative abundances of nauplii and adults of S. micheli were higher at the lower end of the chemical conditions, whereas the abundance of the subadult stages appears to be linked with slightly higher hydrothermal inputs. Whether this distribution is influenced by distinct physiological tolerances or nutritional needs of the different developmental stages is unknown. Total dissolved sulfur was the variable best explaining the distribution of S. micheli on the Eiffel Tower edifice. C1 [Ivanenko, Viatcheslav N.] Moscow MV Lomonosov State Univ, Fac Biol, Dept Invertebrate Zool, Moscow 119992, Russia. [Corgosinho, Paulo H. C.] Univ Estadual Montes Claros, Dept Biol, Zool Lab, Montes Claros, MG, Brazil. [Ferrari, Frank] Smithsonian Inst, Natl Museum Nat Hist, IZ MSC, MRC 534, Suitland, MD USA. [Sarradin, Pierre-Marie; Sarrazin, Jozee] IFREMER, Ctr Brest, Dept Etud Ecosyst Profonds, Lab Environm Profond, Plouzane, France. RP Ivanenko, VN (reprint author), Moscow MV Lomonosov State Univ, Fac Biol, Dept Invertebrate Zool, Leninskie Gory 1-12, Moscow 119992, Russia. EM ivanenko@mail.bio.msu.ru RI Ivanenko, Viatcheslav/B-8198-2008; Corgosinho, Paulo Henrique/C-1047-2015 OI Ivanenko, Viatcheslav/0000-0003-1255-0491; Corgosinho, Paulo Henrique/0000-0002-2851-6557 FU EXOCET/D European; Ifremer (France); Russian Foundation for Basic Research [09-04-01523-a]; Ministry of Education and Science of the Russian Federation [Pi1291, 02.740.11.0875, 14.740.11.1049]; ANR DEEP-OASES [ANR06BDV005]; GDR ECCHIS FX The MoMARETO cruise (2006) was led by Jozee Sarrazin and Pierre-Marie Sarradin (chief scientists) and part of it was supported by the EXOCET/D European program. The study of copepods was supported by grants from Ifremer (France), the Russian Foundation for Basic Research (09-04-01523-a) and the Ministry of Education and Science of the Russian Federation (Pi 1291, 02.740.11.0875, 14.740.11.1049). This research project also benefited from funds from the ANR DEEP-OASES (ANR06BDV005) and support from the GDR ECCHIS. H.-U. Dahms kindly commented on early drafts of the manuscript. Confocal microscopies were conducted in the German Center for Marine Biodiversity Research of the Senckenberg Research Institute. NR 37 TC 4 Z9 4 U1 0 U2 16 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0173-9565 EI 1439-0485 J9 MAR ECOL-EVOL PERSP JI Mar. Ecol.-Evol. Persp. PD JUN PY 2012 VL 33 IS 2 BP 246 EP 256 DI 10.1111/j.1439-0485.2011.00484.x PG 11 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA 929EF UT WOS:000303043300009 ER PT J AU Elvis, M AF Elvis, Martin TI Let's mine asteroids - for science and profit SO NATURE LA English DT Editorial Material C1 Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Elvis, M (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM martinselvis2@gmail.com NR 0 TC 15 Z9 15 U1 7 U2 57 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 EI 1476-4687 J9 NATURE JI Nature PD MAY 31 PY 2012 VL 485 IS 7400 BP 549 EP 549 PG 1 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 949WP UT WOS:000304608000013 PM 22660280 ER PT J AU Webb, JM Jacobus, LM Funk, DH Zhou, X Kondratieff, B Geraci, CJ DeWalt, RE Baird, DJ Richard, B Phillips, I Hebert, PDN AF Webb, Jeffrey M. Jacobus, Luke M. Funk, David H. Zhou, Xin Kondratieff, Boris Geraci, Christy J. DeWalt, R. Edward Baird, Donald J. Richard, Barton Phillips, Iain Hebert, Paul D. N. TI A DNA Barcode Library for North American Ephemeroptera: Progress and Prospects SO PLOS ONE LA English DT Article ID WATER-QUALITY; BIOLOGICAL IDENTIFICATIONS; TRICHOPTERA; EPHEMERELLIDAE; BIODIVERSITY; PLECOPTERA; PHYLOGENY; SPECIMEN; LEVEL AB DNA barcoding of aquatic macroinvertebrates holds much promise as a tool for taxonomic research and for providing the reliable identifications needed for water quality assessment programs. A prerequisite for identification using barcodes is a reliable reference library. We gathered 4165 sequences from the barcode region of the mitochondrial cytochrome c oxidase subunit I gene representing 264 nominal and 90 provisional species of mayflies (Insecta: Ephemeroptera) from Canada, Mexico, and the United States. No species shared barcode sequences and all can be identified with barcodes with the possible exception of some Caenis. Minimum interspecific distances ranged from 0.3-24.7% (mean: 12.5%), while the average intraspecific divergence was 1.97%. The latter value was inflated by the presence of very high divergences in some taxa. In fact, nearly 20% of the species included two or three haplotype clusters showing greater than 5.0% sequence divergence and some values are as high as 26.7%. Many of the species with high divergences are polyphyletic and likely represent species complexes. Indeed, many of these polyphyletic species have numerous synonyms and individuals in some barcode clusters show morphological attributes characteristic of the synonymized species. In light of our findings, it is imperative that type or topotype specimens be sequenced to correctly associate barcode clusters with morphological species concepts and to determine the status of currently synonymized species. C1 [Webb, Jeffrey M.; Hebert, Paul D. N.] Univ Guelph, Biodivers Inst Ontario, Guelph, ON N1G 2W1, Canada. [Jacobus, Luke M.] Indiana Univ Purdue Univ Columbus, Div Sci, Columbus, IN USA. [Funk, David H.] Stroud Water Res Ctr, Avondale, PA USA. [Zhou, Xin] BGI, Shenzhen, Guangdong, Peoples R China. [Kondratieff, Boris] Colorado State Univ, Dept Bioagr Sci & Pest Management, Ft Collins, CO 80523 USA. [Geraci, Christy J.] Smithsonian Inst, Natl Museum Nat Hist, Dept Entomol, Washington, DC 20560 USA. [DeWalt, R. Edward] Univ Illinois, Prairie Res Inst, Champaign, IL 61820 USA. [Baird, Donald J.] Univ New Brunswick, Dept Biol, Canadian Rivers Inst, Environm Canada, Fredericton, NB E3B 6E1, Canada. [Richard, Barton] Florida A&M Univ, Lab Aquat Entomol, Tallahassee, FL 32307 USA. [Phillips, Iain] Saskatchewan Watershed Author, Saskatoon, SK, Canada. RP Webb, JM (reprint author), Univ Guelph, Biodivers Inst Ontario, Guelph, ON N1G 2W1, Canada. EM jmw975@yahoo.com RI Zhou, Xin/D-4025-2009; Baird, Donald/A-5267-2009; Hebert, Paul/C-4161-2013 OI Zhou, Xin/0000-0002-1407-7952; Hebert, Paul/0000-0002-3081-6700 FU Government of Canada through Genome Canada; Ontario Genomics Institute [2008-OGI-ICI-03]; Environment Canada's Competitiveness and Environmental Sustainability Indicators (CESI) Program FX This project was funded by the Government of Canada through Genome Canada and the Ontario Genomics Institute (2008-OGI-ICI-03), and Environment Canada's Competitiveness and Environmental Sustainability Indicators (CESI) Program. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 38 TC 29 Z9 32 U1 0 U2 38 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA SN 1932-6203 J9 PLOS ONE JI PLoS One PD MAY 30 PY 2012 VL 7 IS 5 AR e38063 DI 10.1371/journal.pone.0038063 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 959YF UT WOS:000305353400074 PM 22666447 ER PT J AU Penalver, E Labandeira, CC Barron, E Delclos, X Nel, P Nel, A Tafforeau, P Soriano, C AF Penalver, Enrique Labandeira, Conrad C. Barron, Eduardo Delclos, Xavier Nel, Patricia Nel, Andre Tafforeau, Paul Soriano, Carmen TI Thrips pollination of Mesozoic gymnosperms SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE paleoecology; paleoethology; coevolution; plant-insect interactions ID ORDER THYSANOPTERA INSECTA; PHYLOGENETIC ANALYSIS; AUSTRALIAN CYCAD; SOCIAL-BEHAVIOR; POLLEN; EVOLUTION; ANGIOSPERMS; ZAMIACEAE; INFERENCE; ORIGIN AB Within modern gymnosperms, conifers and Ginkgo are exclusively wind pollinated whereas many gnetaleans and cycads are insect pollinated. For cycads, thrips are specialized pollinators. We report such a specialized pollination mode from Early Cretaceous amber of Spain, wherein four female thrips representing a genus and two species in the family Melanthripidae were covered by abundant Cycadopites pollen grains. These females bear unique ring setae interpreted as specialized structures for pollen grain collection, functionally equivalent to the hook-tipped sensilla and plumose setae on the bodies of bees. The most parsimonious explanation for this structure is parental food provisioning for larvae, indicating subsociality. This association provides direct evidence of specialized collection and transportation of pollen grains and likely gymnosperm pollination by 110-105 million years ago, possibly considerably earlier. C1 [Labandeira, Conrad C.] Smithsonian Inst, Natl Museum Nat Hist, Dept Paleobiol, Washington, DC 20013 USA. [Penalver, Enrique; Barron, Eduardo] Inst Geol & Minero Espana, Museo Geominero, E-28003 Madrid, Spain. [Labandeira, Conrad C.] Univ Maryland, Dept Entomol, College Pk, MD 20742 USA. [Labandeira, Conrad C.] Univ Maryland, Behav Ecol Evolut & Systemat Program, College Pk, MD 20742 USA. [Delclos, Xavier] Univ Barcelona, Fac Geol, Dept Estratig Paleontol & Geociencies, E-08071 Barcelona, Spain. [Nel, Patricia; Nel, Andre] Museum Natl Hist Nat, CNRS, UMR 7205, F-75005 Paris, France. [Nel, Patricia; Nel, Andre] AgroParisTech, Dept Sci Vie & Sante, F-75231 Paris, France. [Tafforeau, Paul; Soriano, Carmen] European Synchrotron Radiat Facil, F-38000 Grenoble, France. RP Labandeira, CC (reprint author), Smithsonian Inst, Natl Museum Nat Hist, Dept Paleobiol, Washington, DC 20013 USA. EM labandec@si.edu RI DELCLOS, Xavier/D-4363-2014 OI DELCLOS, Xavier/0000-0002-2233-5480 FU European Union [FR-TAF-5126]; Spanish Ministry of Economy and Competitiveness [CGL2011-23948/BTE] FX We thank the staff of the Museo de Ciencias Naturales de Alava in Spain for preparation, curation, and access to specimens. We thank Bernard Gomez from the University of Lyon-1 and Jose Baruchel and Tamzin Lafford from the European Synchrotron Radiation Facility for their help. Finnegan Marsh did the illustrations. We thank Peter Cloetens, Jean-Claude Labiche, Alejandro Homs, Antonia Beteva, Alessandro Mirone, and Max Langer from the European Synchrotron Radiation Facility for assistance with the imaging and 3D reconstruction of specimens. E. P. acknowledges European Union Synthesys Grant FR-TAF-5126 to study Cretaceous thrips. This study was supported by the Spanish Ministry of Economy and Competitiveness project CGL2011-23948/BTE. This is contribution 174 of the Evolution of Terrestrial Ecosystems consortium at the National Museum of Natural History, in Washington, DC. NR 43 TC 27 Z9 27 U1 6 U2 49 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD MAY 29 PY 2012 VL 109 IS 22 BP 8623 EP 8628 DI 10.1073/pnas.1120499109 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 953PD UT WOS:000304881700056 PM 22615414 ER PT J AU Mayle, M Rittenhouse, ST Schmelcher, P Sadeghpour, HR AF Mayle, M. Rittenhouse, S. T. Schmelcher, P. Sadeghpour, H. R. TI Electric field control in ultralong-range triatomic polar Rydberg molecules SO PHYSICAL REVIEW A LA English DT Article ID DIPOLE-MOMENT; BLOCKADE; ATOMS; GAS AB We theoretically explore the external electric field control of a species of ultralong-range molecules that emerge from the interaction of a ground-state polar molecule with a Rydberg atom. The external field mixes the Rydberg electronic states and, therefore, strongly alters the electric field seen by the polar diatomic molecule due to the Rydberg electron. As a consequence, the adiabatic potential energy curves responsible for the molecular binding can be tuned in such a way that an intersection with neighboring curves occurs. The latter leads to admixture of s-wave character in the Rydberg wave function and will substantially facilitate the experimental preparation and realization of this particular class of Rydberg molecule species. C1 [Mayle, M.] Univ Colorado, JILA, Boulder, CO 80309 USA. [Mayle, M.] Natl Inst Stand & Technol, Boulder, CO 80309 USA. [Rittenhouse, S. T.; Sadeghpour, H. R.] Harvard Smithsonian Ctr Astrophys, ITAMP, Cambridge, MA 02138 USA. [Schmelcher, P.] Univ Hamburg, Zentrum Opt Quantentechnol, D-22761 Hamburg, Germany. RP Mayle, M (reprint author), Univ Colorado, JILA, Boulder, CO 80309 USA. RI Mayle, Michael/A-2423-2009; Schmelcher, Peter/D-9592-2014 OI Schmelcher, Peter/0000-0002-2637-0937 FU German Academic Exchange Service (DAAD); NSF through ITAMP at Harvard University; Smithsonian Astrophysical Observatory FX M.M. acknowledges financial support by a fellowship within the postdoc-programme of the German Academic Exchange Service (DAAD). S.T.R. and H.R.S. acknowledge financial support from the NSF through ITAMP at Harvard University and the Smithsonian Astrophysical Observatory. NR 24 TC 13 Z9 13 U1 0 U2 7 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9926 EI 2469-9934 J9 PHYS REV A JI Phys. Rev. A PD MAY 24 PY 2012 VL 85 IS 5 AR 052511 DI 10.1103/PhysRevA.85.052511 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 946XR UT WOS:000304391300005 ER PT J AU Pyenson, ND Goldbogen, JA Vogl, AW Szathmary, G Drake, RL Shadwick, RE AF Pyenson, Nicholas D. Goldbogen, Jeremy A. Vogl, A. Wayne Szathmary, Gabor Drake, Richard L. Shadwick, Robert E. TI Discovery of a sensory organ that coordinates lunge feeding in rorqual whales SO NATURE LA English DT Article ID FIN WHALES; MYSTICETE; MECHANICS; CETACEA; BALEEN AB Top ocean predators have evolved multiple solutions to the challenges of feeding in the water(1-3). At the largest scale, rorqual whales (Balaenopteridae) engulf and filter prey-laden water by lunge feeding(4), a strategy that is unique among vertebrates(1). Lunge feeding is facilitated by several morphological specializations, including bilaterally separate jaws that loosely articulate with the skull(5,6), hyper-expandable throat pleats, or ventral groove blubber(7), and a rigid y-shaped fibrocartilage structure branching from the chin into the ventral groove blubber(8). The linkages and functional coordination among these features, however, remain poorly understood. Here we report the discovery of a sensory organ embedded within the fibrous symphysis between the unfused jaws that is present in several rorqual species, at both fetal and adult stages. Vascular and nervous tissue derived from the ancestral, anterior-most tooth socket insert into this organ, which contains connective tissue and papillae suspended in a gel-like matrix. These papillae show the hallmarks of a mechanoreceptor, containing nerves and encapsulated nerve termini. Histological, anatomical and kinematic evidence indicate that this sensory organ responds to both the dynamic rotation of the jaws during mouth opening and closure, and ventral groove blubber(7) expansion through direct mechanical linkage with the y-shaped fibrocartilage structure. Along with vibrissae on the chin(9), providing tactile prey sensation, this organ provides the necessary input to the brain for coordinating the initiation, modulation and end stages of engulfment, a paradigm that is consistent with unsteady hydrodynamic models and tag data from lunge-feeding rorquals(10-13). Despite the antiquity of unfused jaws in baleen whales since the late Oligocene(14) (similar to 23-28 million years ago), this organ represents an evolutionary novelty for rorquals, based on its absence in all other lineages of extant baleen whales. This innovation has a fundamental role in one of the most extreme feeding methods in aquatic vertebrates, which facilitated the evolution of the largest vertebrates ever. C1 [Pyenson, Nicholas D.] Smithsonian Inst, Natl Museum Nat Hist, Dept Paleobiol, Washington, DC 20013 USA. [Pyenson, Nicholas D.] Burke Museum Nat Hist & Culture, Dept Mammal, Seattle, WA 98195 USA. [Pyenson, Nicholas D.] Burke Museum Nat Hist & Culture, Dept Paleontol, Seattle, WA 98195 USA. [Goldbogen, Jeremy A.] Cascadia Res Collect, Olympia, WA 98501 USA. [Vogl, A. Wayne] Univ British Columbia, Dept Cellular & Physiol Sci, Vancouver, BC V6T 1Z3, Canada. [Szathmary, Gabor] FPInnovations, Vancouver, BC V6T 1W5, Canada. [Drake, Richard L.] Case Western Reserve Univ, Cleveland Clin, Lerner Coll Med, Cleveland, OH 44195 USA. [Shadwick, Robert E.] Univ British Columbia, Dept Zool, Vancouver, BC V6T 1Z4, Canada. RP Pyenson, ND (reprint author), Smithsonian Inst, Natl Museum Nat Hist, Dept Paleobiol, POB 37012, Washington, DC 20013 USA. EM pyensonn@si.edu OI Goldbogen, Jeremy/0000-0002-4170-7294 FU Natural Sciences and Engineering Research Council of Canada; Smithsonian Institution; Remington Kellogg Fund; University of British Columbia; Scripps Postdoctoral Research Fellowship; NSERC FX For logistical support, we thank K. Loftsson and the staff at Hvalur hf; D. Olafsdottir, S. D. Halldorsson and G. A. Vikingsson at the Marine Research Institute, Reykjavik; G. Bergmann and the staff at Hrefnuveioimenn ehf; S. Raverty; P. F. Brodie; and A. Trites. For additional samples and data, we also thank P.-Y. Daoust, G. Williams, the Amarok Hunters and Trappers Organization of Iqaluit, Captain S. Awa and the Inuit whaling crew from Iqaluit, J. Higgins and the Cascadia Research Collective, M. R. Buono, A. van Helden and the Museum of New Zealand Te Papa Tongarewa, and R. E. Fordyce. We also thank T. S. Hunter for assistance with laboratory samples. Comments from D. J. Bohaska, M. T. Carrano, R. B. Irmis, J. G. Mead, J. F. Parham, C. W. Potter and J. Velez-Juarbe improved this manuscript. N.D.P. was supported by a postdoctoral research fellowship from the Natural Sciences and Engineering Research Council of Canada and by funding from the Smithsonian Institution and its Remington Kellogg Fund. J. A. G. was supported by a University Graduate Fellowship for Research from the University of British Columbia, a Scripps Postdoctoral Research Fellowship and NSERC funding to R.E.S. NR 30 TC 34 Z9 34 U1 10 U2 64 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD MAY 24 PY 2012 VL 485 IS 7399 BP 498 EP 501 DI 10.1038/nature11135 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 946IH UT WOS:000304344500042 PM 22622577 ER PT J AU McNamara, BR Nulsen, PEJ AF McNamara, B. R. Nulsen, P. E. J. TI Mechanical feedback from active galactic nuclei in galaxies, groups and clusters SO NEW JOURNAL OF PHYSICS LA English DT Article ID COOLING-FLOW CLUSTERS; X-RAY CAVITIES; MASSIVE BLACK-HOLE; ANISOTROPIC THERMAL CONDUCTION; EXTRAGALACTIC RADIO-SOURCES; CENTRAL DOMINANT GALAXIES; DEEP CHANDRA OBSERVATION; DRIVEN ACCRETION FLOWS; STAR-FORMING GALAXIES; H-ALPHA FILAMENTS AB The radiative cooling timescales at the centers of hot atmospheres surrounding elliptical galaxies, groups and clusters are much shorter than their ages. Therefore, hot atmospheres are expected to cool and to form stars. Cold gas and star formation are observed in central cluster galaxies but at levels below those expected from an unimpeded cooling flow. X-ray observations have shown that wholesale cooling is being offset by mechanical heating from radio active galactic nuclei. Feedback is widely considered to be an important and perhaps unavoidable consequence of the evolution of galaxies and supermassive black holes. We show that cooling x-ray atmospheres and the ensuing star formation and nuclear activity are probably coupled to a self-regulated feedback loop. While the energetics are now reasonably well understood, other aspects of feedback are not. We highlight the problems of atmospheric heating and transport processes, accretion, and nuclear activity, and we discuss the potential role of black hole spin. We discuss x-ray imagery showing that the chemical elements produced by central galaxies are being dispersed on large scales by outflows launched from the vicinity of supermassive black holes. Finally, we comment on the growing evidence for mechanical heating of distant cluster atmospheres by radio jets and its potential consequences for the excess entropy in hot halos and a possible decline in the number of distant cooling flows. C1 [McNamara, B. R.] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada. [McNamara, B. R.] Perimeter Inst Theoret Phys, Waterloo, ON, Canada. [McNamara, B. R.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP McNamara, BR (reprint author), Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada. EM mcnamara@uwaterloo.ca; pnulsen@cfa.harvard.edu OI Nulsen, Paul/0000-0003-0297-4493 FU NASA [NAS8-03060]; Chandra Large Project [G09-0140X]; Natural Sciences and Engineering Research Council of Canada; SSEP from Canadian Space Agency FX We thank Helen Russell, Massimo Gaspari, Christoph Pfrommer, Prateek Sharma, Bill Mathews and especially Mark Voit and Peter Mendygral for their help and advice. This work was supported in part by NASA contract NAS8-03060, Chandra Large Project grant G09-0140X, and generous funding from the Natural Sciences and Engineering Research Council of Canada, and an SSEP grant from the Canadian Space Agency. NR 318 TC 138 Z9 140 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 1367-2630 J9 NEW J PHYS JI New J. Phys. PD MAY 23 PY 2012 VL 14 AR 055023 DI 10.1088/1367-2630/14/5/055023 PG 40 WC Physics, Multidisciplinary SC Physics GA 953NP UT WOS:000304875700001 ER PT J AU Zaslavsky, A Meyer-Vernet, N Mann, I Czechowski, A Issautier, K Le Chat, G Pantellini, F Goetz, K Maksimovic, M Bale, SD Kasper, JC AF Zaslavsky, A. Meyer-Vernet, N. Mann, I. Czechowski, A. Issautier, K. Le Chat, G. Pantellini, F. Goetz, K. Maksimovic, M. Bale, S. D. Kasper, J. C. TI Interplanetary dust detection by radio antennas: Mass calibration and fluxes measured by STEREO/WAVES SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID PLASMA-WAVE INSTRUMENT; INTERSTELLAR DUST; SOLAR-SYSTEM; ASTRONOMY INSTRUMENT; RING PLANE; VOYAGER 1; IMPACTS; SPACECRAFT; CONSTRAINTS; CASSINI AB We analyze dust impacts recorded by the S/WAVES radio instrument onboard the two STEREO spacecraft near 1 A.U. during the period 2007-2010. The impact of a dust particle on a spacecraft produces a plasma cloud whose associated electric field can be detected by on-board electric antennas. For this study we use the electric potential time series recorded by the waveform sampler of the instrument. The high time resolution and long sampling times of this measurement enable us to deduce considerably more information than in previous studies based on the dynamic power spectra provided by the same instrument or by radio instruments onboard other spacecraft. The large detection area compared to conventional dust detectors provides flux data with a better statistics. We show that the dust-generated signals are of two kinds, corresponding to impacts of dust from distinctly different mass ranges. We propose calibration formulas for these signals and show that we are able to use S/WAVES as a dust detector with convincing results both in the nanometer and micrometer size ranges. In the latter, the orbital motion of the spacecraft enables us to distinguish between interstellar and interplanetary dust components. Our measurements cover the mass intervals similar to 10(-22)-10(-20) kg and similar to 10(-17)- 5 x 10(-16) kg. The flux of the larger dust agrees with measurements of other instruments on different spacecraft. C1 [Zaslavsky, A.; Meyer-Vernet, N.; Issautier, K.; Le Chat, G.; Pantellini, F.; Maksimovic, M.] Univ Paris 07, LESIA, Univ Paris 06, Observ Paris,CNRS, F-92195 Meudon, France. [Zaslavsky, A.; Kasper, J. C.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Zaslavsky, A.; Kasper, J. C.] NASA Lunar Sci Inst, Moffett Field, CA USA. [Mann, I.] Belgian Inst Space Aeron, Brussels, Belgium. [Czechowski, A.] Polish Acad Sci, Space Res Ctr, PL-01237 Warsaw, Poland. [Goetz, K.] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA. [Bale, S. D.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA. RP Zaslavsky, A (reprint author), Univ Paris 07, LESIA, Univ Paris 06, Observ Paris,CNRS, 5 Pl Jules Janssen, F-92195 Meudon, France. EM arnaud.zaslavsky@obspm.fr RI Bale, Stuart/E-7533-2011; Kasper, Justin/D-1152-2010 OI Bale, Stuart/0000-0002-1989-3596; Kasper, Justin/0000-0002-7077-930X FU CNES; CNRS; Polish Ministry of Science [NN 203 513 038]; NASA [NNA09DB30A] FX We thank the team who designed and built the instrument and are very grateful to P.L. Astier for many discussions that helped us to understand the response of the instrument and to evaluate the spacecraft capacitance. The French part was supported by CNES and CNRS. A.C. was supported by Polish Ministry of Science grant NN 203 513 038. Several of the authors were supported by NASA grant NNA09DB30A. NR 41 TC 34 Z9 34 U1 2 U2 8 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0148-0227 J9 J GEOPHYS RES-SPACE JI J. Geophys. Res-Space Phys. PD MAY 23 PY 2012 VL 117 AR A05102 DI 10.1029/2011JA017480 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 949OV UT WOS:000304586400002 ER PT J AU Tscherbul, TV AF Tscherbul, T. V. TI Total-angular-momentum representation for atom-molecule collisions in electric fields SO PHYSICAL REVIEW A LA English DT Article ID REACTIVE SCATTERING; DIPOLAR COLLISIONS; POLAR-MOLECULES; COLD MOLECULES; MAGNETIC-FIELD; ULTRACOLD; ENERGY; TEMPERATURES; CHEMISTRY; SPIN AB It is shown that the atom-molecule collision problem in the presence of an external electric field can be solved using the total angular momentum representation in the body-fixed coordinate frame, leading to a computationally efficient method for ab initio modeling of low-temperature scattering phenomena. Our calculations demonstrate rapid convergence of the cross sections for vibrational and Stark relaxation in He-CaD collisions with the number of total angular momentum states in the basis set, leading to a 5- to 100-fold increase in computational efficiency over the previously used methods based on the fully uncoupled space-fixed representation. These results open up the possibility of carrying out numerically converged quantum scattering calculations on a wide array of atom-molecule collisions and chemical reactions in the presence of electric fields. C1 [Tscherbul, T. V.] Harvard MIT Ctr Ultracold Atoms, Cambridge, MA 02138 USA. [Tscherbul, T. V.] Harvard Smithsonian Ctr Astrophys, Inst Theoret Atom Mol & Opt Phys, Cambridge, MA 02138 USA. RP Tscherbul, TV (reprint author), Harvard MIT Ctr Ultracold Atoms, Cambridge, MA 02138 USA. EM tshcherb@cfa.harvard.edu RI Tscherbul, Timur/K-3286-2014 OI Tscherbul, Timur/0000-0001-5689-040X FU NSF; Institute for Theoretical Atomic, Molecular, and Optical Physics at Harvard University; Smithsonian Astrophysical Observatory FX The author is grateful to Rosario Gonzalez-Ferez and Roman Krems for their interest in this work and stimulating discussions. This work was supported by NSF grants to the Harvard-MIT Center for Ultracold Atoms and the Institute for Theoretical Atomic, Molecular, and Optical Physics at Harvard University and the Smithsonian Astrophysical Observatory. NR 66 TC 5 Z9 5 U1 0 U2 14 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD MAY 22 PY 2012 VL 85 IS 5 AR 052710 DI 10.1103/PhysRevA.85.052710 PG 8 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 946XG UT WOS:000304390200014 ER PT J AU Steffen, JH Ragozzine, D Fabrycky, DC Carter, JA Ford, EB Holman, MJ Rowe, JF Welsh, WF Borucki, WJ Boss, AP Ciardi, DR Quinn, SN AF Steffen, Jason H. Ragozzine, Darin Fabrycky, Daniel C. Carter, Joshua A. Ford, Eric B. Holman, Matthew J. Rowe, Jason F. Welsh, William F. Borucki, William J. Boss, Alan P. Ciardi, David R. Quinn, Samuel N. TI Kepler constraints on planets near hot Jupiters SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE extrasolar planets; planet formation; planetary dynamics ID EARTH-LIKE PLANETS; 1ST 4 MONTHS; EXTRASOLAR PLANETS; STATISTICAL PROPERTIES; TIMING VARIATIONS; GIANT PLANETS; LIGHT CURVES; MIGRATION; SYSTEMS; CANDIDATES AB We present the results of a search for planetary companions orbiting near hot Jupiter planet candidates (Jupiter-size candidates with orbital periods near 3 d) identified in the Kepler data through its sixth quarter of science operations. Special emphasis is given to companions between the 2: 1 interior and exterior mean-motion resonances. A photometric transit search excludes companions with sizes ranging from roughly two-thirds to five times the size of the Earth, depending upon the noise properties of the target star. A search for dynamically induced deviations from a constant period (transit timing variations) also shows no significant signals. In contrast, comparison studies of warm Jupiters (with slightly larger orbits) and hot Neptune-size candidates do exhibit signatures of additional companions with these same tests. These differences between hot Jupiters and other planetary systems denote a distinctly different formation or dynamical history. C1 [Steffen, Jason H.] Fermilab Ctr Particle Astrophys, Batavia, IL 60510 USA. [Ragozzine, Darin; Carter, Joshua A.; Holman, Matthew J.; Quinn, Samuel N.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Fabrycky, Daniel C.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA. [Ford, Eric B.] Univ Florida, Dept Astron, Bryant Space Sci Ctr 211, Gainesville, FL 32111 USA. [Rowe, Jason F.; Borucki, William J.] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA. [Welsh, William F.] San Diego State Univ, Dept Astron, San Diego, CA 92182 USA. [Boss, Alan P.] Carnegie Inst Washington, Dept Terr Magnetism, Washington, DC 20015 USA. [Ciardi, David R.] CALTECH, NASA, Exoplanet Sci Inst, Pasadena, CA 91125 USA. RP Steffen, JH (reprint author), Fermilab Ctr Particle Astrophys, POB 500, Batavia, IL 60510 USA. EM jsteffen@fnal.gov RI Steffen, Jason/A-4320-2013; Carter, Joshua/A-8280-2013; Ragozzine, Darin/C-4926-2013; OI Ciardi, David/0000-0002-5741-3047; Fabrycky, Daniel/0000-0003-3750-0183 FU National Aeronautics and Space Administration's (NASA) Science Mission Directorate; NASA [NNX08AR04G, HF-51272.01-A, HF-51267.01-A]; Space Telescope Science Institute; Association of Universities for Research in Astronomy, Inc. [NAS 5-26555] FX Funding for the Kepler mission is provided by the National Aeronautics and Space Administration's (NASA) Science Mission Directorate. We thank the Kepler team for their many years of hard work. J.H.S acknowledges support from NASA under Grant NNX08AR04G under the Kepler Participating Scientist Program. D.C.F. and J.A.C. acknowledge support from NASA through Hubble Fellowship Grants HF-51272.01-A and HF-51267.01-A awarded by the Space Telescope Science Institute, operated by the Association of Universities for Research in Astronomy, Inc., under Contract NAS 5-26555. NR 44 TC 71 Z9 71 U1 0 U2 4 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD MAY 22 PY 2012 VL 109 IS 21 BP 7982 EP 7987 DI 10.1073/pnas.1120970109 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 947QY UT WOS:000304445800020 PM 22566651 ER PT J AU Reddy, S Driskell, A Rabosky, DL Hackett, SJ Schulenberg, TS AF Reddy, S. Driskell, A. Rabosky, D. L. Hackett, S. J. Schulenberg, T. S. TI Diversification and the adaptive radiation of the vangas of Madagascar SO PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES LA English DT Article DE passerines; phylogeny; diversification; foraging strategies; adaptive radiation ID GEOGRAPHIC RANGE EVOLUTION; PHYLOGENETIC-RELATIONSHIPS; MAXIMUM-LIKELIHOOD; ENDEMIC RADIATION; SINGLE ORIGIN; SEQUENCE DATA; MIXED MODELS; INDIAN-OCEAN; PASSERIFORMES; DISPERSAL AB The vangas of Madagascar exhibit extreme diversity in morphology and ecology. Recent studies have shown that several other Malagasy species also are part of this endemic radiation, even as the monophyly of the clade remains in question. Using DNA sequences from 13 genes and representatives of all 15 vanga genera, we find strong support for the monophyly of the Malagasy vangids and their inclusion in a family along with six aberrant genera of shrike-like corvoids distributed in Asia and Africa. Biogeographic reconstructions of these lineages include both Asia and Africa as possible dispersal routes to Madagascar. To study patterns of speciation through time, we introduce a method that can accommodate phylogenetically non-random patterns of incomplete taxon sampling in diversification studies. We demonstrate that speciation rates in vangas decreased dramatically through time following the colonization of Madagascar. Foraging strategies of these birds show remarkable congruence with phylogenetic relationships, indicating that adaptations to feeding specializations played a role in the diversification of these birds. Vangas fit the model of an 'adaptive radiation' in that they show an explosive burst of speciation soon after colonization, increased diversification into novel niches and extraordinary ecomorphological diversity. C1 [Reddy, S.] Loyola Univ, Dept Biol, Chicago, IL 60626 USA. [Driskell, A.] Smithsonian Inst, Lab Analyt Biol, Suitland, MD 20746 USA. [Rabosky, D. L.] Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA. [Rabosky, D. L.] Univ Calif Berkeley, Museum Vertebrate Zool, Berkeley, CA 94720 USA. [Hackett, S. J.] Field Museum Nat Hist, Dept Zool, Chicago, IL 60605 USA. [Schulenberg, T. S.] Cornell Lab Ornithol, Ithaca, NY 14850 USA. RP Reddy, S (reprint author), Loyola Univ, Dept Biol, Chicago, IL 60626 USA. EM sreddy6@luc.edu RI Rabosky, Daniel/G-4530-2015 FU Sigma Xi; University of Chicago; American Museum of Natural History; Field Museum of Natural History; National Science Foundation [DEB-0962078] FX We thank Velizar Simeonovski for his extraordinary illustrations of birds. Fieldwork in Madagascar was authorized by the Direction des Eaux et Forests and the Commission Tripartite. For samples and logistics, we acknowledge the Field Museum of Natural History and, in particular, Steve Goodman. For helpful comments, we are grateful to John Bates, Cathy Bechtoldt, Nick Block, Josh Engel, Irby Lovette, Peter Makovicky, Rick Ree, V. V. Robin, Jason Weckstein, Dave Willard and Ben Winger. We also thank Associate Editor Trevor Price, Per Alstrom, and an anonymous reviewer for suggesting significant improvements to the paper. Laboratory work was conducted at the Pritzker Laboratory of Molecular Systematics at the Field Museum of Natural History and at the Laboratory of Analytical Biology at the Smithsonian Institution. This research was supported by grants from Sigma Xi, the University of Chicago (Neirman Fund), the American Museum of Natural History (Frank M. Chapman Fund), the Field Museum of Natural History (Reichelderfer Fund) and the National Science Foundation (DEB-0962078). Data generated in this study were deposited into GenBank (JQ239173-JQ239370). NR 67 TC 25 Z9 26 U1 3 U2 59 PU ROYAL SOC PI LONDON PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND SN 0962-8452 EI 1471-2954 J9 P ROY SOC B-BIOL SCI JI Proc. R. Soc. B-Biol. Sci. PD MAY 22 PY 2012 VL 279 IS 1735 BP 2062 EP 2071 DI 10.1098/rspb.2011.2380 PG 10 WC Biology; Ecology; Evolutionary Biology SC Life Sciences & Biomedicine - Other Topics; Environmental Sciences & Ecology; Evolutionary Biology GA 925RT UT WOS:000302779600024 PM 22217720 ER PT J AU Reilly, NJ Kokkin, DL Zhuang, X Gupta, V Nagarajan, R Fortenberry, RC Maier, JP Steimle, TC Stanton, JF McCarthy, MC AF Reilly, N. J. Kokkin, D. L. Zhuang, X. Gupta, V. Nagarajan, R. Fortenberry, R. C. Maier, J. P. Steimle, T. C. Stanton, J. F. McCarthy, M. C. TI The electronic spectrum of Si-3 I: Triplet D-3h system SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID SMALL SILICON CLUSTERS; 1ST ROW ATOMS; PHOTOELECTRON-SPECTRA; ENERGY GRADIENTS; CARBON CHAINS; GROUND-STATE; BASIS-SETS; SPECTROSCOPY; TRANSITION; SIH2 AB We report the measurement of a jet-cooled electronic spectrum of the silicon trimer. Si-3 was produced in a pulsed discharge of silane in argon, and the excitation spectrum examined in the 18 000-20 800 cm(-1) region. A combination of resonant two-color two-photon ionization (R2C2PI) time-of-flight mass spectroscopy, laser-induced fluorescence/dispersed fluorescence, and equation-of-motion coupled-cluster calculations have been used to establish that the observed spectrum is dominated by the 1(3)A ''(1) - (a) over tilde (3)A'(2) transition of the D-3h isomer. The spectrum has an origin transition at 18 600 +/- 4 cm(-1) and a short progression in the symmetric stretch with a frequency of similar to 445 cm(-1), in good agreement with a predicted vertical transition energy of 2.34 eV for excitation to the 1(3)A ''(1) state, which has a calculated symmetric stretching frequency of 480 cm(-1). In addition, a similar to 505 cm(-1) ground state vibrational frequency determined from sequence bands and dispersed fluorescence is in agreement with an earlier zero-electron kinetic energy study of the lowest D-3h state and with theory. A weaker, overlapping band system with a similar to 360 cm(-1) progression, observed in the same mass channel (m/z = 84) by R2C2PI but under different discharge conditions, is thought to be due to transitions from the (more complicated) singlet C-2 upsilon ground state ((1)A(1)) state of Si-3. Evidence of emission to this latter state in the triplet dispersed fluorescence spectra suggests extensive mixing in the excited triplet and singlet manifolds. Prospects for further spectroscopic characterization of the singlet system and direct measurement of the energy separation between the lowest singlet and triplet states are discussed. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4704672] C1 [Reilly, N. J.; Kokkin, D. L.; McCarthy, M. C.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Reilly, N. J.; Kokkin, D. L.; McCarthy, M. C.] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA. [Zhuang, X.; Steimle, T. C.] Arizona State Univ, Dept Chem & Biochem, Tempe, AZ 85287 USA. [Gupta, V.; Nagarajan, R.; Maier, J. P.] Univ Basel, Dept Chem, CH-4056 Basel, Switzerland. [Fortenberry, R. C.] Virginia Tech, Dept Chem, Blacksburg, VA 24061 USA. [Stanton, J. F.] Univ Texas Austin, Dept Chem & Biochem, Austin, TX 78712 USA. RP Reilly, NJ (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM nreilly@cfa.harvard.edu OI McCarthy, Michael/0000-0001-9142-0008 FU National Science Foundation (NSF) [CHE-1058063, CHE-1011996]; Swiss National Science Foundation [200020-124349/1]; Virginia Space Grant Consortium; Robert A. Welch Foundation of Houston, Texas [F-1283] FX The work in Cambridge is supported by National Science Foundation (NSF) Grant No. CHE-1058063. The work in Basel is supported by the Swiss National Science Foundation (Project No. 200020-124349/1). T.C.S. acknowledges the NSF (Grant No. CHE-1011996) for funding support. R.C.F. wishes to thank the Virginia Space Grant Consortium for a graduate research fellowship, and acknowledges T. Daniel Crawford for advice on this project. J.F.S. has been supported by the NSF and the Robert A. Welch Foundation (Grant No. F-1283) of Houston, Texas. NR 44 TC 7 Z9 7 U1 1 U2 13 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD MAY 21 PY 2012 VL 136 IS 19 AR 194307 DI 10.1063/1.4704672 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 945VC UT WOS:000304303500023 PM 22612095 ER PT J AU Anderson, GE Gaensler, BM Slane, PO Rea, N Kaplan, DL Posselt, B Levin, L Johnston, S Murray, SS Brogan, CL Bailes, M Bates, S Benjamin, RA Bhat, NDR Burgay, M Burke-Spolaor, S Chakrabarty, D D'Amico, N Drake, JJ Esposito, P Grindlay, JE Hong, J Israel, GL Keith, MJ Kramer, M Lazio, TJW Lee, JC Mauerhan, JC Milia, S Possenti, A Stappers, B Steeghs, DTH AF Anderson, Gemma E. Gaensler, B. M. Slane, Patrick O. Rea, Nanda Kaplan, David L. Posselt, Bettina Levin, Lina Johnston, Simon Murray, Stephen S. Brogan, Crystal L. Bailes, Matthew Bates, Samuel Benjamin, Robert A. Bhat, N. D. Ramesh Burgay, Marta Burke-Spolaor, Sarah Chakrabarty, Deepto D'Amico, Nichi Drake, Jeremy J. Esposito, Paolo Grindlay, Jonathan E. Hong, Jaesub Israel, G. L. Keith, Michael J. Kramer, Michael Lazio, T. Joseph W. Lee, Julia C. Mauerhan, Jon C. Milia, Sabrina Possenti, Andrea Stappers, Ben Steeghs, Danny T. H. TI MULTI-WAVELENGTH OBSERVATIONS OF THE RADIO MAGNETAR PSR J1622-4950 AND DISCOVERY OF ITS POSSIBLY ASSOCIATED SUPERNOVA REMNANT SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM: individual objects (G333.9+0.0); ISM: supernova remnants; pulsars: individual (PSR J1622-4950); radio continuum: stars; stars: neutron; X-rays: stars ID X-RAY PULSAR; GALACTIC PLANE SURVEY; LARGE-AREA TELESCOPE; PHOTON IMAGING CAMERA; AXP XTE J1810-197; 1E 1547.0-5408; SOURCE CATALOG; CROSS-SECTIONS; PROPER MOTIONS; 2009 OUTBURST AB We present multi-wavelength observations of the radio magnetar PSR J1622-4950 and its environment. Observations of PSR J1622-4950 with Chandra (in 2007 and 2009) and XMM (in 2011) show that the X-ray flux of PSR J1622-4950 has decreased by a factor of similar to 50 over 3.7 years, decaying exponentially with a characteristic time of tau = 360 +/- 11 days. This behavior identifies PSR J1622-4950 as a possible addition to the small class of transient magnetars. The X-ray decay likely indicates that PSR J1622-4950 is recovering from an X-ray outburst that occurred earlier in 2007, before the 2007 Chandra observations. Observations with the Australia Telescope Compact Array show strong radio variability, including a possible radio flaring event at least one and a half years after the 2007 X-ray outburst that may be a direct result of this X-ray event. Radio observations with the Molonglo Observatory Synthesis Telescope reveal that PSR J1622-4950 is 8' southeast of a diffuse radio arc, G333.9+0.0, which appears non-thermal in nature and which could possibly be a previously undiscovered supernova remnant (SNR). If G333.9+0.0 is an SNR then the estimates of its size and age, combined with the close proximity and reasonable implied velocity of PSR J1622-4950, suggest that these two objects could be physically associated. C1 [Slane, Patrick O.; Drake, Jeremy J.; Grindlay, Jonathan E.; Hong, Jaesub; Lee, Julia C.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Rea, Nanda] Inst Ciencies Espai CSIC IEEC, Fac Ciencies, Barcelona 08193, Spain. [Kaplan, David L.] Univ Wisconsin, Dept Phys, Milwaukee, WI 53201 USA. [Posselt, Bettina] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA. [Levin, Lina; Bailes, Matthew; Bhat, N. D. Ramesh] Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia. [Levin, Lina; Johnston, Simon; Burke-Spolaor, Sarah; Keith, Michael J.] CSIRO Astron & Space Sci, Australia Telescope Natl Facil, Epping, NSW 1710, Australia. [Murray, Stephen S.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. [Brogan, Crystal L.] Natl Radio Astron Observ, Charlottesville, VA 22903 USA. [Bates, Samuel; Kramer, Michael; Stappers, Ben] Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England. [Bates, Samuel] W Virginia Univ, Dept Phys, Morgantown, WV USA. [Benjamin, Robert A.] Univ Wisconsin, Dept Phys, Whitewater, WI 53190 USA. [Burgay, Marta; D'Amico, Nichi; Esposito, Paolo; Milia, Sabrina; Possenti, Andrea] INAF Osservatorio Astron Cagliari, I-09012 Capoterra, Italy. [Burke-Spolaor, Sarah; Lazio, T. Joseph W.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Chakrabarty, Deepto] MIT, MIT Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA. [Chakrabarty, Deepto] MIT, Dept Phys, Cambridge, MA 02139 USA. [Israel, G. L.] INAF Osservatorio Astron Roma, Monteporsio Catone, Italy. [Kramer, Michael] Max Planck Inst Radioastron, D-53121 Bonn, Germany. [Mauerhan, Jon C.] CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA. [Milia, Sabrina] Univ Cagliari, Dipartimento Fis, I-09042 Monserrato, CA, Italy. [Steeghs, Danny T. H.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. [Anderson, Gemma E.; Gaensler, B. M.] Univ Sydney, Sch Phys A29, Sydney Inst Astron, Sydney, NSW 2006, Australia. RP Anderson, GE (reprint author), Univ Sydney, Sch Phys A29, Sydney Inst Astron, Sydney, NSW 2006, Australia. EM g.anderson@physics.usyd.edu.au RI Bhat, Ramesh/B-7396-2013; Steeghs, Danny/C-5468-2009; Gaensler, Bryan/F-8655-2010; Rea, Nanda/I-2853-2015; Lee, Julia/G-2381-2015; OI Steeghs, Danny/0000-0003-0771-4746; Rea, Nanda/0000-0003-2177-6388; Lee, Julia/0000-0002-7336-3588; Israel, GianLuca/0000-0001-5480-6438; Burgay, Marta/0000-0002-8265-4344; Anderson, Gemma/0000-0001-6544-8007; Posselt, Bettina/0000-0003-2317-9747; Esposito, Paolo/0000-0003-4849-5092; Gaensler, Bryan/0000-0002-3382-9558 FU Australian Postgraduate Award; Australian Laureate Fellowship; NASA [NAS8-03060, NAS8-39073, GO9-0155X]; Ramon y Cajal Research Fellowship; Formosa Program [TW2010005]; Autonomous Region of Sardinia through program PO Sardegna FSE; STFC; ESA; Australian Research Council; Science Foundation for Physics within the University of Sydney; Commonwealth of Australia; NFS; Spitzer Legacy Program; [AYA2009-07391]; [SGR2009-811] FX We thank the referee for their careful reading of the manuscript and constructive suggestions. G. E. A acknowledges the support of an Australian Postgraduate Award. B. M. G. acknowledges the support of an Australian Laureate Fellowship. P.O.S. acknowledges partial support from NASA Contract NAS8-03060. N.R. is supported by a Ramon y Cajal Research Fellowship to CSIC, and grants AYA2009-07391 and SGR2009-811, as well as the Formosa Program TW2010005. J.J.D was supported by NASA contract NAS8-39073 to the Chandra X-ray Center (CXC). P. E. acknowledges financial support from the Autonomous Region of Sardinia through a research grant under the program PO Sardegna FSE 2007-2013, L. R. 7/2007. D. T. H. S. acknowledges an STFC Advanced Fellowship. Support for this work was also provided by NASA through Chandra Award Number GO9-0155X issued by the CXC, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of NASA. This research makes use of data obtained with the Chandra X-ray Observatory, and software provided by the CXC in the application packages CIAO. This work is based on observations obtained with XMM-Newton, an ESA science mission with instruments and contributions directly funded by ESA Member States and NASA. MOST is operated with the support of the Australian Research Council and the Science Foundation for Physics within the University of Sydney. ATCA and Parkes, part of the Australia Telescope, are funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO. Observing time on the 6.5 m Baade Magellan Telescope, located at Las Campanas Observatory, was allocated through the Harvard-Smithsonian Center for Astrophysics. 2MASS is a joint project of the University of Massachusetts and the IPAC/Caltech, funded by the NASA and NFS. GLIMPSE survey data are part of the Spitzer Legacy Program. The Spitzer Space Telescope is operated by the JPL/Caltech under a contract with NASA. This research has made use of NASA's Astrophysics Data System. NR 99 TC 25 Z9 26 U1 0 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD MAY 20 PY 2012 VL 751 IS 1 AR 53 DI 10.1088/0004-637X/751/1/53 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 939MF UT WOS:000303814600053 ER PT J AU Brown, WR Geller, MJ Kenyon, SJ AF Brown, Warren R. Geller, Margaret J. Kenyon, Scott J. TI MMT HYPERVELOCITY STAR SURVEY. II. FIVE NEW UNBOUND STARS SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: individual (M31, Sextans B); Galaxy: center; Galaxy: halo; Galaxy: kinematics and dynamics; stars: early-type ID MASSIVE BLACK-HOLE; DIGITAL SKY SURVEY; LARGE-MAGELLANIC-CLOUD; SGR A-ASTERISK; DARK-MATTER HALO; MILKY-WAY HALO; GALACTIC-CENTER; WHITE-DWARF; STELLAR ORBITS; BINARY STARS AB We present the discovery of five new unbound hypervelocity stars (HVSs) in the outer Milky Way halo. Using a conservative estimate of Galactic escape velocity, our targeted spectroscopic survey has now identified 16 unbound HVSs as well as a comparable number of HVSs ejected on bound trajectories. A Galactic center origin for the HVSs is supported by their unbound velocities, the observed number of unbound stars, their stellar nature, their ejection time distribution, and their Galactic latitude and longitude distribution. Other proposed origins for the unbound HVSs, such as runaway ejections from the disk or dwarf galaxy tidal debris, cannot be reconciled with the observations. An intriguing result is the spatial anisotropy of HVSs on the sky, which possibly reflects an anisotropic potential in the central 10-100 pc region of the Galaxy. Further progress requires measurement of the spatial distribution of HVSs over the southern sky. Our survey also identifies seven B supergiants associated with known star-forming galaxies; the absence of B supergiants elsewhere in the survey implies there are no new star-forming galaxies in our survey footprint to a depth of 1-2 Mpc. C1 [Brown, Warren R.; Geller, Margaret J.; Kenyon, Scott J.] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. RP Brown, WR (reprint author), Smithsonian Astrophys Observ, 60 Garden St, Cambridge, MA 02138 USA. EM wbrown@cfa.harvard.edu; mgeller@cfa.harvard.edu; skenyon@cfa.harvard.edu OI Kenyon, Scott/0000-0003-0214-609X FU Smithsonian Institution FX We thank M. Alegria, A. Milone, and J. McAfee for their assistance with observations obtained at the MMT Observatory, a joint facility of the Smithsonian Institution and the University of Arizona. This project makes use of data products from the Sloan Digital Sky Survey, which is managed by the Astrophysical Research Consortium for the Participating Institutions. This research makes use of NASA's Astrophysics Data System Bibliographic Services. This work was supported by the Smithsonian Institution. NR 128 TC 27 Z9 27 U1 2 U2 9 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY 20 PY 2012 VL 751 IS 1 AR 55 DI 10.1088/0004-637X/751/1/55 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 939MF UT WOS:000303814600055 ER PT J AU Kim, DW Fabbiano, G Pipino, A AF Kim, Dong-Woo Fabbiano, Giuseppina Pipino, Antonio TI X-RAY PROPERTIES OF YOUNG EARLY-TYPE GALAXIES. II. ABUNDANCE RATIO IN THE HOT INTERSTELLAR MATTER SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: abundances; galaxies: elliptical and lenticular, cD; galaxies: individual (NGC 720, NGC 3923); galaxies: ISM; X-rays: galaxies ID INTRACLUSTER MEDIUM ENRICHMENT; GALACTIC CHEMICAL EVOLUTION; LINE-STRENGTH INDEXES; ELLIPTIC GALAXIES; XMM-NEWTON; CHANDRA OBSERVATIONS; METAL ABUNDANCES; STELLAR POPULATIONS; GAS; NUCLEOSYNTHESIS AB Using Chandra X-ray observations of young, post-merger elliptical galaxies, we present X-ray characteristics of age-related observational results by comparing them with typical old elliptical galaxies in terms of metal abundances in the hot interstellar matter (ISM). While the absolute element abundances may be uncertain because of unknown systematic errors and partly because of the smaller amount of hot gas in young ellipticals, the relative abundance ratios (e. g., the a-element to Fe ratio, and most importantly the Si/Fe ratio) can be relatively well constrained. In two young elliptical galaxies (NGC 720 and NGC3923) we find that the Si to Fe abundance ratio is super-solar (at a 99% significance level), in contrast to typical old elliptical galaxies where the Si to Fe abundance ratio is close to solar. Also, the O/Mg ratio is close to solar in the two young elliptical galaxies, as opposed to the sub-solar O/Mg ratio reported in old elliptical galaxies. Both features appear to be less significant outside the effective radius (roughly 30 '' for the galaxies under study), consistent with the observations that confine to the centermost regions the signatures of recent star formation in elliptical galaxies. Observed differences between young and old elliptical galaxies can be explained by the additional contribution from SNe II ejecta in the former. In young elliptical galaxies, the later star formation associated with recent mergers would have a dual effect, resulting both in galaxy scale winds-and therefore smaller observed amounts of hot ISM-because of the additional SN II heating, and in different metal abundances, because of the additional SN II yields. C1 [Kim, Dong-Woo; Fabbiano, Giuseppina] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. [Pipino, Antonio] ETH, CH-8093 Zurich, Switzerland. RP Kim, DW (reprint author), Smithsonian Astrophys Observ, 60 Garden St, Cambridge, MA 02138 USA. FU CXC CIAO software; CALDB; Chandra GO [G08-9133X]; XMM-Newton GO [NNX09AT20G]; NASA [NAS8-39073] FX The data analysis was supported by the CXC CIAO software and CALDB. We have used the NASA NED and ADS facilities, and have extracted archival data from the Chandra archives. This work was supported by the Chandra GO grant G08-9133X (PI: Kim), XMM-Newton GO grant NNX09AT20G (PI: Kim), and NASA contract NAS8-39073 (CXC). NR 52 TC 6 Z9 6 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD MAY 20 PY 2012 VL 751 IS 1 AR 38 DI 10.1088/0004-637X/751/1/38 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 939MF UT WOS:000303814600038 ER PT J AU Landi, E Raymond, JC Miralles, MP Hara, H AF Landi, E. Raymond, J. C. Miralles, M. P. Hara, H. TI POST-CORONAL MASS EJECTION PLASMA OBSERVED BY HINODE SO ASTROPHYSICAL JOURNAL LA English DT Article DE Sun: activity; Sun: corona; Sun: coronal mass ejections (CMEs); Sun: UV radiation; Sun: X-rays, gamma rays ID CME CURRENT SHEETS; MAGNETIC RECONNECTION; DIMMING REGIONS; ATOMIC DATABASE; EMISSION-LINES; SOLAR; FLARE; OUTFLOWS; TEMPERATURE; SPECTRA AB In the present work we study the evolution of an active region after the eruption of a coronal mass ejection (CME) using observations from the EIS and XRT instruments on board Hinode. The field of view includes a post-eruption arcade, a current sheet, and a coronal dimming. The goal of this paper is to provide a comprehensive set of measurements for all these aspects of the CME phenomenon made on the same CME event. The main physical properties of the plasma along the line of sight-electron density, thermal structure, plasma composition, size, and, when possible, mass-are measured and monitored with time for the first three hours following the CME event of 2008 April 9. We find that the loop arcade observed by EIS and XRT may not be related to the post-eruption arcade. Post-CME plasma is hotter than the surrounding corona, but its temperature never exceeds 3 MK. Both the electron density and thermal structure do not show significant evolution with time, while we found that the size of the loop arcade in the Hinode plane of the sky decreased with time. The plasma composition is the same in the current sheet, in the loop arcade, and in the ambient plasma, so all these plasmas are likely of coronal origin. No significant plasma flows were detected. C1 [Landi, E.] Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA. [Raymond, J. C.; Miralles, M. P.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Hara, H.] Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan. RP Landi, E (reprint author), Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA. RI Landi, Enrico/H-4493-2011 FU NASA [NNX11AB61G]; [NNX10AM17G]; [NNX11AC20G] FX The work of E. Landi is supported by NNX10AM17G, NNX11AC20G, and other NASA grants. The work of M.P.M. is supported by several NASA grants. The work of J.C.R. is supported by NASA grant NNX11AB61G to the Smithsonian Astrophysical Observatory. Hinode is a Japanese mission built and launched by JAXA/ISAS, collaborating with NAOJ as a domestic partner, and NASA (USA), and PPARC (UK) as international partners. We warmly thank the anonymous referee who helped us improve our original manuscript considerably. NR 54 TC 12 Z9 12 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD MAY 20 PY 2012 VL 751 IS 1 AR 21 DI 10.1088/0004-637X/751/1/21 PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 939MF UT WOS:000303814600021 ER PT J AU Milisavljevic, D Fesen, RA Chevalier, RA Kirshner, RP Challis, P Turatto, M AF Milisavljevic, Dan Fesen, Robert A. Chevalier, Roger A. Kirshner, Robert P. Challis, Peter Turatto, Massimo TI LATE-TIME OPTICAL EMISSION FROM CORE-COLLAPSE SUPERNOVAE SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM: individual objects (Cassiopeia A); ISM: supernova remnants; supernovae: individual (SN 1957D, SN 1970G, SN 1980K, SN 1993J); supernovae: general ID HUBBLE-SPACE-TELESCOPE; X-RAY-EMISSION; LATE SPECTRAL EVOLUTION; CASSIOPEIA-A SUPERNOVA; SMALL-MAGELLANIC-CLOUD; NEAR-INFRARED SPECTRA; MAJOR DUST FACTORIES; RADIO-EMISSION; SN 1993J; II SUPERNOVAE AB Ground-based optical spectra and Hubble Space Telescope images of 10 core-collapse supernovae (CCSNe) obtained several years to decades after outburst are analyzed with the aim of understanding the general properties of their late-time emissions. New observations of SN 1957D, 1970G, 1980K, and 1993J are included as part of the study. Blueshifted line emissions in oxygen and/or hydrogen with conspicuous line substructure are a common and long-lasting phenomenon in the late-time spectra. Followed through multiple epochs, changes in the relative strengths and velocity widths of the emission lines are consistent with expectations for emissions produced by interaction between SN ejecta and the progenitor star's circumstellar material. The most distinct trend is an increase in the strength of [OIII]/([O I]+[O II]) with age, and a decline in H alpha/([O I]+[O II]) which is broadly consistent with the view that the reverse shock has passed through the H envelope of the ejecta in many of these objects. We also present a spatially integrated spectrum of the young Galactic supernova remnant Cassiopeia A (Cas A). Similarities observed between the emission line profiles of the approximate to 330 yr old Cas A remnant and decades old CCSNe suggest that observed emission line asymmetry in evolved CCSN spectra may be associated with dust in the ejecta, and that minor peak substructure typically interpreted as "clumps" or "blobs" of ejecta may instead be linked with large-scale rings of SN debris. C1 [Milisavljevic, Dan; Kirshner, Robert P.; Challis, Peter] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Milisavljevic, Dan; Fesen, Robert A.] Dartmouth Coll, Dept Phys & Astron, Wilder Lab 6127, Hanover, NH 03755 USA. [Chevalier, Roger A.] Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA. [Turatto, Massimo] Osserv Astron Padova, I-35122 Padua, Italy. RP Milisavljevic, D (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM dmilisav@cfa.harvard.edu OI Turatto, Massimo/0000-0002-9719-3157 FU National Science Foundation (NSF) [AST-0908237, AST-0807727, AST-0606772, AST-0907903]; PRIN-INAF; ASI-INAF [I/009/10/0]; Canadian Space Agency FX We thank the referee for comments and suggestions that improved the manuscript. We also thank John Thorstensen and MDM staff for help with telescope operations, particularly with configuring the new acquisition camera which made some of these observations possible, T. Matheson and M. Modjaz for making the 2001 spectrum of SN 1993J available, and F. Bauer for providing a spectrum of SN 1996cr. D.M. and R.A.F. acknowledge support by NSF through grant AST-0908237. R.A.C. acknowledges support from NSF grant AST-0807727. M.T. is supported by the PRIN-INAF 2009 "Supernovae Variety and Nucleosynthesis Yields" and by the grant ASI-INAF I/009/10/0. This work is based in part on observations made with the NASA/ESA Hubble Space Telescope, and obtained from the Hubble Legacy Archive, which is a collaboration between the Space Telescope Science Institute (STScI/NASA), the Space Telescope European Coordinating Facility (ST-ECF/ESA), and the Canadian Astronomy Data Centre (CADC/NRC/CSA). Some data presented here were obtained at the MMT Observatory, a joint facility of the Smithsonian Institution and the University of Arizona. Supernova research at the Harvard College Observatory is supported by the National Science Foundation through grants AST-0606772 and AST-0907903. This research has made use of SAOImage DS9, developed by Smithsonian Astrophysical Observatory, and used the facilities of the Canadian Astronomy Data Centre operated by the National Research Council of Canada with the support of the Canadian Space Agency. NR 146 TC 28 Z9 28 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY 20 PY 2012 VL 751 IS 1 AR 25 DI 10.1088/0004-637X/751/1/25 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 939MF UT WOS:000303814600025 ER PT J AU Murphy, NA Miralles, MP Pope, CL Raymond, JC Winter, HD Reeves, KK Seaton, DB van Ballegooijen, AA Lin, J AF Murphy, N. A. Miralles, M. P. Pope, C. L. Raymond, J. C. Winter, H. D. Reeves, K. K. Seaton, D. B. van Ballegooijen, A. A. Lin, J. TI ASYMMETRIC MAGNETIC RECONNECTION IN SOLAR FLARE AND CORONAL MASS EJECTION CURRENT SHEETS SO ASTROPHYSICAL JOURNAL LA English DT Article DE magnetic reconnection; methods: numerical; Sun: coronal mass ejections (CMEs); Sun: flares ID HARD X-RAY; ORDER FINITE-ELEMENTS; FIELD LINE SHRINKAGE; INITIAL PITCH-ANGLE; CME CURRENT SHEETS; FOOTPOINT EMISSIONS; SUPRA-ARCADE; MOTIONS; LOOPS; PROMINENCES AB We present two-dimensional resistive magnetohydrodynamic simulations of line-tied asymmetric magnetic reconnection in the context of solar flare and coronal mass ejection current sheets. The reconnection process is made asymmetric along the inflow direction by allowing the initial upstream magnetic field strengths and densities to differ, and along the outflow direction by placing the initial perturbation near a conducting wall boundary that represents the photosphere. When the upstream magnetic fields are asymmetric, the post-flare loop structure is distorted into a characteristic skewed candle flame shape. The simulations can thus be used to provide constraints on the reconnection asymmetry in post-flare loops. More hard X-ray emission is expected to occur at the footpoint on the weak magnetic field side because energetic particles are more likely to escape the magnetic mirror there than at the strong magnetic field footpoint. The footpoint on the weak magnetic field side is predicted to move more quickly because of the requirement in two dimensions that equal amounts of flux must be reconnected from each upstream region. The X-line drifts away from the conducting wall in all simulations with asymmetric outflow and into the strong magnetic field region during most of the simulations with asymmetric inflow. There is net plasma flow across the X-line for both the inflow and outflow directions. The reconnection exhaust directed away from the obstructing wall is significantly faster than the exhaust directed toward it. The asymmetric inflow condition allows net vorticity in the rising outflow plasmoid which would appear as rolling motions about the flux rope axis. C1 [Murphy, N. A.; Miralles, M. P.; Pope, C. L.; Raymond, J. C.; Winter, H. D.; Reeves, K. K.; van Ballegooijen, A. A.; Lin, J.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Pope, C. L.] Elmhurst Coll, Elmhurst, IL USA. [Seaton, D. B.] SIDC Royal Observ Belgium, B-1180 Brussels, Belgium. [Lin, J.] Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Yunnan, Peoples R China. RP Murphy, NA (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. RI Reeves, Katharine/P-9163-2014; LIN, JUN/B-9890-2017; OI Murphy, Nicholas/0000-0001-6628-8033; SEATON, DANIEL/0000-0002-0494-2025 FU NASA [NNX09AB17G, NNX11AB61G, NNM07AB07C, NNX09AH22G]; NSF-REU at the Center for Astrophysics [ATM-0851866]; NSF-SHINE [ATM0752257]; Program 973 [2011CB811403]; NSFC [10873030]; CAS [KJCX2-EW-T07, 2010Y2JB16]; Belgian Federal Science Policy Office through ESA-PRODEX [4000103240]; NASA through the NASA Advanced Supercomputing (NAS) Division at Ames Research Center FX The authors thank P. A. Cassak, S. E. Guidoni, Y.-K. Ko, D. E. McKenzie, L. Ni, M. Oka, S. L. Savage, C. Shen, C. R. Sovinec, H. P. Warren, D. Webb, Y.-H. Yang, and S. Zenitani for useful discussions. This research is supported by NASA grants NNX09AB17G and NNX11AB61G and NASA contract NNM07AB07C to the Smithsonian Astrophysical Observatory. M. P. M. acknowledges support from NASA grant NNX09AH22G. C. L. P. acknowledges support from the NSF-REU solar physics program at the Center for Astrophysics, grant number ATM-0851866. K. K. R. is supported under the NSF-SHINE program, grant number ATM0752257. The work of J.L. was also supported by the Program 973 grant 2011CB811403, the NSFC grant 10873030, and the CAS grant KJCX2-EW-T07 to the Yunnan Astronomical Observatory. D. B. S. acknowledges support from the Belgian Federal Science Policy Office through ESA-PRODEX grant number 4000103240. N.A.M. acknowledges the hospitality of the Yunnan Astronomical Observatory during a visit supported by CAS grant 2010Y2JB16. The authors thank members of the NIMROD team for code development efforts that helped make this work possible. Resources supporting this work were provided by the NASA High-End Computing (HEC) Program through the NASA Advanced Supercomputing (NAS) Division at Ames Research Center. This article has benefited greatly from the use of NASA's Astrophysics Data System. NR 131 TC 17 Z9 17 U1 0 U2 11 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD MAY 20 PY 2012 VL 751 IS 1 AR 56 DI 10.1088/0004-637X/751/1/56 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 939MF UT WOS:000303814600056 ER PT J AU Tappe, A Forbrich, J Martin, S Yuan, Y Lada, CJ AF Tappe, A. Forbrich, J. Martin, S. Yuan, Y. Lada, C. J. TI THE ANATOMY OF THE YOUNG PROTOSTELLAR OUTFLOW HH 211 SO ASTROPHYSICAL JOURNAL LA English DT Article DE Herbig-Haro objects; ISM: individual objects (HH 211); ISM: jets and outflows; ISM: molecules; shock waves ID SPITZER-SPACE-TELESCOPE; STAR-FORMING REGIONS; EXTENDED GREEN OBJECTS; ARRAY CAMERA IRAC; MOLECULAR-HYDROGEN; TW HYA; INFRARED SPECTROGRAPH; SUBMILLIMETER ARRAY; PROTOPLANETARY DISK; ORGANIC-MOLECULES AB We present Spitzer Space Telescope 5-36 mu m mapping observations toward the southeastern lobe of the young protostellar outflow HH211. The southeastern terminal shock of the outflow shows a rich mid-infrared spectrum including molecular emission lines from OH, H2O, HCO+, CO2, H-2, and HD. The spectrum also shows a rising infrared continuum toward 5 mu m, which we interpret as unresolved emission lines from highly excited rotational levels of the CO v = 1-0 fundamental band. This interpretation is supported by a strong excess flux observed in the Spitzer/IRAC 4-5 mu m channel 2 image compared to the other IRAC channels. The extremely high critical densities of the CO v = 1-0 ro-vibrational lines and a comparison to H-2 and CO excitation models suggest jet densities larger than 10(6) cm(-3) in the terminal shock. We also observed the southeastern terminal outflow shock with the Submillimeter Array and detected pure rotational emission from CO 2-1, HCO+ 3-2, and HCN 3-2. The rotationally excited CO traces the collimated outflow backbone as well as the terminal shock. HCN traces individual dense knots along the outflow and in the terminal shock, whereas HCO+ solely appears in the terminal shock. The unique combination of our mid-infrared and submillimeter observations with previously published near-infrared observations allow us to study the interaction of one of the youngest known protostellar outflows with its surrounding molecular cloud. Our results help us to understand the nature of some of the so-called green fuzzies (Extended Green Objects), and elucidate the physical conditions that cause high OH excitation and affect the chemical OH/H2O balance in protostellar outflows and young stellar objects. In an appendix to this paper, we summarize our Spitzer follow-up survey of protostellar outflow shocks to find further examples of highly excited OH occurring together with H2O and H-2. C1 [Tappe, A.; Forbrich, J.; Lada, C. J.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Martin, S.] European So Observ, Santiago 19, Chile. [Yuan, Y.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. RP Tappe, A (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St,MS 72, Cambridge, MA 02138 USA. EM atappe@cfa.harvard.edu FU NASA; NASA through JPL [1367911, 1375004]; Smithsonian Institution; Academia Sinica FX This work is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. This research was supported by NASA through JPL-issued contracts 1367911 and 1375004. The Submillimeter Array is a joint project between the Smithsonian Astrophysical Observatory and the Academia Sinica Institute of Astronomy and Astrophysics and is funded by the Smithsonian Institution and the Academia Sinica. This work is based in part on data collected at the Subaru Telescope, which is operated by the National Astronomical Observatory of Japan. We thank Naomi Hirano and Minho Choi for providing the near-IR H2 images of HH211 and IRAS 4B, Josh Walawender for the H alpha image, Jochen Eisloffel for the near-infrared continuum image, and Dirk Froebrich and Alessio Caratti o Garatti for providing the near-infrared spectra of HH 211. We also thank Gregory Herczeg for very helpful discussions and sharing an early preprint of his paper on IRAS 4B. NR 65 TC 13 Z9 13 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY 20 PY 2012 VL 751 IS 1 AR 9 DI 10.1088/0004-637X/751/1/9 PG 24 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 939MF UT WOS:000303814600009 ER PT J AU Chen, HR Rao, R Wilner, DJ Liu, SY AF Chen, Huei-Ru Rao, Ramprasad Wilner, David J. Liu, Sheng-Yuan TI THE MAGNETIZED ENVIRONMENT OF THE W3(H2O) PROTOSTARS SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE ISM: individual objects (W3(H2O)); ISM: magnetic fields; stars: formation; techniques: polarimetric ID FORMING MOLECULAR CLOUDS; H2O MASER SOURCE; STAR-FORMATION; PROTOBINARY SYSTEM; FIELD STRUCTURE; MASSIVE STARS; DARK CLOUDS; W3(OH); DUST; POLARIZATION AB We present the first interferometric polarization map of the W3(OH) massive star-forming region observed with the Submillimeter Array (SMA) at 878 mu m with an angular resolution of 1.'' 5 (about 3 x 10(3) AU). Polarization is detected in the W3(H2O) hot core, an extended emission structure in the northwest of W3(H2O), and part of the W3(OH) ultracompact H II region. TheW3(H2O) hot core is known to be associated with a synchrotron jet along the east-west direction. In this core, the inferred magnetic field orientation is well aligned with the synchrotron jet and close to the plane of sky. Using the Chandrasekhar-Fermi method with the observed dispersion in polarization angle, we estimate a plane-of-sky magnetic field strength of 17.0 mG. Combined with watermaser Zeeman measurements, the total magnetic field strength is estimated to be 17.1 mG, comparable to the field strength estimated from the synchrotron model. The magnetic field energy dominates over turbulence in this core. In addition, the depolarization effect is discerned in both SMA and James Clerk Maxwell Telescope measurements. Despite the great difference in angular resolutions and map extents, the polarization percentage shows a similar power-law dependence with the beam averaged column density. We suggest that the column density may be an important factor to consider when interpreting the depolarization effect. C1 [Chen, Huei-Ru] Natl Tsing Hua Univ, Inst Astron, Hsinchu, Taiwan. [Chen, Huei-Ru] Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan. [Chen, Huei-Ru; Rao, Ramprasad; Liu, Sheng-Yuan] Acad Sinica, Inst Astron & Astrophys, Taipei 115, Taiwan. [Wilner, David J.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Chen, HR (reprint author), Natl Tsing Hua Univ, Inst Astron, Hsinchu, Taiwan. EM hchen@phys.nthu.edu.tw FU National Science Council of Taiwan [NSC 100-2112-M-007-004-MY2] FX This research is supported by National Science Council of Taiwan through grant NSC 100-2112-M-007-004-MY2. Vivien Chen thank Dr. B. Matthews for the general guideline to convert JCMT SCUPOL flux density. NR 50 TC 3 Z9 3 U1 1 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD MAY 20 PY 2012 VL 751 IS 1 AR L13 DI 10.1088/2041-8205/751/1/L13 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 939MR UT WOS:000303815800013 ER PT J AU Girart, JM Patel, N Vlemmings, WHT Rao, R AF Girart, J. M. Patel, N. Vlemmings, W. H. T. Rao, Ramprasad TI MAPPING THE LINEARLY POLARIZED SPECTRAL LINE EMISSION AROUND THE EVOLVED STAR IRC+10216 SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE circumstellar matter; polarization; stars: AGB and post-AGB; stars: individual (IRC+10216, CW Leo); submillimeter: stars ID MAGNETIC-FIELD DIRECTION; CIRCUMSTELLAR ENVELOPE; MOLECULAR LINES; SIO MASERS; IMAGING POLARIMETRY; RADIO FREQUENCIES; FORMING REGIONS; GHZ; MILLIARCSECOND; 21(OH) AB We present spectro-polarimetric observations of several molecular lines obtained with the Submillimeter Array toward the carbon-rich asymptotic giant branch star IRC+10216. We have detected and mapped the linear polarization of the CO 3-2, SiS 19-18, and CS 7-6 lines. The polarization arises at a distance of similar or equal to 450 AU from the star and is blueshifted with respect to the Stokes I. The SiS 19-18 polarization pattern appears to be consistent with a locally radial magnetic field configuration. However, the CO 3-2 and CS 7-6 line polarization suggests an overall complex magnetic field morphology within the envelope. This work demonstrates the feasibility of using spectro-polarimetric observations to carry out tomographic imaging of the magnetic field in circumstellar envelopes. C1 [Girart, J. M.] Fac Ciencies, Inst Ciencies Espai, CSIC IEEC, Bellaterra 08193, Catalunya, Spain. [Patel, N.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Vlemmings, W. H. T.] Chalmers, Dept Earth & Space Sci, Onsala Space Observ, SE-43992 Onsala, Sweden. [Rao, Ramprasad] Acad Sinica, Inst Astron & Astrophys, Hilo, HI 96720 USA. RP Girart, JM (reprint author), Fac Ciencies, Inst Ciencies Espai, CSIC IEEC, Campus UAB,C5p 2, Bellaterra 08193, Catalunya, Spain. EM girart@ice.cat RI Girart, Josep/O-1638-2014; OI Girart, Josep/0000-0002-3829-5591; /0000-0002-2700-9916 FU Spanish MICINN [AYA2008-06189-C03]; Catalan AGAUR [2009SGR1172]; Deutsche Forschungsgemeinschaft (DFG) [VL 61/3-1] FX We thank all members of the SMA staff who made these observations possible. J.M.G. is supported by the Spanish MICINN AYA2008-06189-C03 and the Catalan AGAUR 2009SGR1172 grants. W. V. acknowledges support by the Deutsche Forschungsgemeinschaft (DFG) through the Emmy Noether Research grant VL 61/3-1. NR 39 TC 8 Z9 8 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD MAY 20 PY 2012 VL 751 IS 1 AR L20 DI 10.1088/2041-8205/751/1/L20 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 939MR UT WOS:000303815800020 ER PT J AU Platais, I Melo, C Quinn, SN Clem, JL de Mink, SE Dotter, A Kozhurina-Platais, V Latham, DW Bellini, A AF Platais, I. Melo, C. Quinn, S. N. Clem, J. L. de Mink, S. E. Dotter, A. Kozhurina-Platais, V. Latham, D. W. Bellini, A. TI THE EFFECTS OF DIFFERENTIAL REDDENING AND STELLAR ROTATION ON THE APPEARANCE OF MULTIPLE POPULATIONS IN STAR CLUSTERS: THE CASE OF TRUMPLER 20 SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE open clusters and associations: general; open clusters and associations: individual (Trumpler 20); stars: rotation; techniques: spectroscopic ID LARGE-MAGELLANIC-CLOUD; RADIAL-VELOCITY MEASUREMENTS; MAIN-SEQUENCE TURNOFFS; BRANCH STARS; INTERMEDIATE; EVOLUTION; I.; SPECTROGRAPH; PARAMETERS AB We present a detailed analysis of the upper main sequence of the similar to 1.3 Gyr old open cluster Trumpler 20. High-accuracy BVI photometry combined with the Very Large Telescope/FLAMES medium-resolution spectroscopy of 954 stars is essential to understanding the unusual appearance of the color-magnitude diagram (CMD), initially suggesting multiple populations in Trumpler 20. We show that differential reddening is a dominant contributor to the apparent splitting/widening of the main-sequence turnoff region. At its extreme, the excess differential reddening reaches Delta(B - V) similar to 0.1 while the adopted minimum reddening for the cluster is E(B - V) = 0.36. A unique sample of measured projected rotational velocities indicates that stellar rotation is high near the main-sequence turnoff, reaching v sin i similar to 180 km s(-1). By dividing the upper main-sequence stars into two equal groups of slow and fast rotators, we find that fast rotators have a marginal blueshift of delta(V - I) similar to -0.01, corresponding to a difference in the median v sin i of similar to 60 km s(-1) between these subsamples. We conclude that stellar rotation has an insignificant effect on the morphology of the upper main sequence of this intermediate-age open cluster. Trumpler 20 appears to contain a single coeval population of stars but there is evidence that the red clump is extended. C1 [Platais, I.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. [Melo, C.] European So Observ, D-85748 Garching, Germany. [Quinn, S. N.; Latham, D. W.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Clem, J. L.] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. [de Mink, S. E.; Dotter, A.; Kozhurina-Platais, V.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Bellini, A.] Univ Padua, Dipartimento Astron, I-35122 Padua, Italy. RP Platais, I (reprint author), Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. EM imants@pha.jhu.edu RI Melo, Claudio/O-2797-2013; OI de Mink, Selma/0000-0001-9336-2825; Melo, Claudio/0000-0002-6090-8446 FU NSF [AST 09-08114] FX We thank Nate Bastian and the anonymous referee for meritorious suggestions. This work has been supported in part by the NSF Grant AST 09-08114 to JHU (I.P.). NR 26 TC 20 Z9 20 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD MAY 20 PY 2012 VL 751 IS 1 AR L8 DI 10.1088/2041-8205/751/1/L8 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 939MR UT WOS:000303815800008 ER PT J AU Gacesa, M Zhang, P Kharchenko, V AF Gacesa, M. Zhang, P. Kharchenko, V. TI Non-thermal escape of molecular hydrogen from Mars SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID HOT OXYGEN CORONA; ATMOSPHERIC ESCAPE; STOCHASTIC-MODELS; SATELLITE CORONAS; CROSS-SECTIONS; QUANTUM; SCATTERING; O(P-3)+H-2; EVOLUTION; COLLISIONS AB We present a detailed theoretical analysis of non-thermal escape of molecular hydrogen from Mars induced by collisions with hot atomic oxygen from the Martian corona. To accurately describe the energy transfer in O + H-2(v, j) collisions, we performed extensive quantum-mechanical calculations of state-to-state elastic, inelastic, and reactive cross sections. The escape flux of H-2 molecules was evaluated using a simplified 1D column model of the Martian atmosphere with realistic densities of atmospheric gases and hot oxygen production rates for low solar activity conditions. An average intensity of the non-thermal escape flux of H-2 of 1.9 x 10(5) cm(-2)s(-1) was obtained considering energetic O atoms produced in dissociative recombinations of O-2(+) ions. Predicted ro-vibrational distribution of the escaping H-2 was found to contain a significant fraction of higher rotational states. While the non-thermal escape rate was found to be lower than Jeans rate for H-2 molecules, the non-thermal escape rates of HD and D-2 are significantly higher than their respective Jeans rates. The accurate evaluation of the collisional escape flux of H-2 and its isotopes is important for understanding non-thermal escape of molecules from Mars, as well as for the formation of hot H-2 Martian corona. The described molecular ejection mechanism is general and expected to contribute to atmospheric escape of H-2 and other light molecules from planets, satellites, and exoplanetary bodies. Citation: Gacesa, M., P. Zhang, and V. Kharchenko (2012), Non-thermal escape of molecular hydrogen from Mars, Geophys. Res. Lett., 39, L10203, doi: 10.1029/2012GL050904. C1 [Gacesa, M.; Zhang, P.; Kharchenko, V.] Harvard Smithsonian Ctr Astrophys, Inst Theoret Atom & Mol Phys, Cambridge, MA 02134 USA. [Gacesa, M.; Kharchenko, V.] Univ Connecticut, Dept Phys, Storrs, CT USA. RP Kharchenko, V (reprint author), Harvard Smithsonian Ctr Astrophys, Inst Theoret Atom & Mol Phys, 60 Garden St,MS 14, Cambridge, MA 02134 USA. EM vkharchenko@cfa.harvard.edu RI Gacesa, Marko/F-8027-2011 OI Gacesa, Marko/0000-0001-5145-051X FU NASA [NNX09AF13G, NNX10AB88G] FX We are grateful to D. Wang, A. Kuppermann, and J. Brandao for providing Fortran subroutines for constructing potential energy surfaces, and to N. Lewkow for reading and suggestions. M. G. and V. K. were supported by NASA grants NNX09AF13G and NNX10AB88G. NR 32 TC 5 Z9 5 U1 1 U2 11 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0094-8276 EI 1944-8007 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD MAY 19 PY 2012 VL 39 AR L10203 DI 10.1029/2012GL050904 PG 6 WC Geosciences, Multidisciplinary SC Geology GA 945GZ UT WOS:000304262400001 ER PT J AU Hirsch, BT Stanton, MA Maldonado, JE AF Hirsch, Ben T. Stanton, Margaret A. Maldonado, Jesus E. TI Kinship Shapes Affiliative Social Networks but Not Aggression in Ring-Tailed Coatis SO PLOS ONE LA English DT Article ID BROWN CAPUCHIN MONKEYS; GROUP SPATIAL POSITION; WHITE-FACED CAPUCHINS; NASUA-NASUA; KIN SELECTION; CEBUS-APELLA; REPRODUCTIVE SUCCESS; BEHAVIORAL SYNCHRONY; MICROSATELLITE LOCI; FEEDING COMPETITION AB Animal groups typically contain individuals with varying degrees of genetic relatedness, and this variation in kinship has a major influence on patterns of aggression and affiliative behaviors. This link between kinship and social behavior underlies socioecological models which have been developed to explain how and why different types of animal societies evolve. We tested if kinship and age-sex class homophily in two groups of ring-tailed coatis (Nasua nasua) predicted the network structure of three different social behaviors: 1) association, 2) grooming, and 3) aggression. Each group was studied during two consecutive years, resulting in four group-years available for analysis (total of 65 individuals). Association patterns were heavily influenced by agonistic interactions which typically occurred during feeding competition. Grooming networks were shaped by mother-offspring bonds, female-female social relationships, and a strong social attraction to adult males. Mother-offspring pairs were more likely to associate and groom each other, but relatedness had no effect on patterns of aggressive behavior. Additionally, kinship had little to no effect on coalitionary support during agonistic interactions. Adult females commonly came to the aid of juveniles during fights with other group members, but females often supported juveniles who were not their offspring (57% of coalitionary interactions). These patterns did not conform to predictions from socioecological models. C1 [Hirsch, Ben T.] Ohio State Univ, Sch Environm & Nat Resources, Columbus, OH 43210 USA. [Hirsch, Ben T.] Smithsonian Trop Res Inst, Panama City, Panama. [Hirsch, Ben T.; Maldonado, Jesus E.] Smithsonian Conservat Biol Inst, Ctr Conservat & Evolutionary Genet, Natl Zool Pk, Washington, DC USA. [Stanton, Margaret A.] Georgetown Univ, Dept Biol, Washington, DC 20057 USA. [Maldonado, Jesus E.] Smithsonian Inst, Dept Vertebrate Zool, Natl Museum Nat Hist, Washington, DC 20560 USA. RP Hirsch, BT (reprint author), Ohio State Univ, Sch Environm & Nat Resources, Columbus, OH 43210 USA. EM hirschb@si.edu FU NSF doctoral dissertation improvement grant [BCS-0314525]; Smithsonian Institution postdoctoral fellowship program; Smithsonian Undersecretary for Science restricted endowment funds; Center for Conservation and Evolutionary Genetics at Smithsonian Conservation Biology Institute FX This study was funded by a NSF doctoral dissertation improvement grant (BCS-0314525), the Smithsonian Institution postdoctoral fellowship program, the Smithsonian Undersecretary for Science restricted endowment funds, and the Center for Conservation and Evolutionary Genetics at Smithsonian Conservation Biology Institute. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 80 TC 13 Z9 13 U1 3 U2 57 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA SN 1932-6203 J9 PLOS ONE JI PLoS One PD MAY 18 PY 2012 VL 7 IS 5 AR e37301 DI 10.1371/journal.pone.0037301 PG 9 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 959VG UT WOS:000305343500093 PM 22624010 ER PT J AU Rasia, E Meneghetti, M Martino, R Borgani, S Bonafede, A Dolag, K Ettori, S Fabjan, D Giocoli, C Mazzotta, P Merten, J Radovich, M Tornatore, L AF Rasia, E. Meneghetti, M. Martino, R. Borgani, S. Bonafede, A. Dolag, K. Ettori, S. Fabjan, D. Giocoli, C. Mazzotta, P. Merten, J. Radovich, M. Tornatore, L. TI Lensing and x-ray mass estimates of clusters (simulations) SO NEW JOURNAL OF PHYSICS LA English DT Article ID DARK-MATTER HALOES; LARGE-SCALE STRUCTURE; LAMBDA-CDM CLUSTERS; ULTRA DEEP FIELD; GALAXY CLUSTERS; XMM-NEWTON; COMA CLUSTER; COSMOLOGICAL SIMULATIONS; DYNAMICAL EVOLUTION; SUNYAEV-ZELDOVICH AB We present a comparison between weak-lensing and x-ray mass estimates of a sample of numerically simulated clusters. The sample consists of the 20 most massive objects at redshift z = 0.25 and M-vir > 5x10(14)M(circle dot) h(-1). They were found in a cosmological simulation of volume 1 h(-3) Gpc(3), evolved in the framework of a WMAP-7 normalized cosmology. Each cluster has been resimulated at higher resolution and with more complex gas physics. We processed it through Skylens and X-MAS to generate optical and x-ray mock observations along three orthogonal projections. The final sample consists of 60 cluster realizations. The optical simulations include lensing effects on background sources. Standard observational tools and methods of analysis are used to recover the mass profiles of each cluster projection from the mock catalogue. The resulting mass profiles from lensing and x-ray are individually compared to the input mass distributions. Given the size of our sample, we could also investigate the dependence of the results on cluster morphology, environment, temperature inhomogeneity and mass. We confirm previous results showing that lensing masses obtained from the fit of the cluster tangential shear profiles with Navarro-Frenk-White functionals are biased low by similar to 5-10% with a large scatter (similar to 10-25%). We show that scatter could be reduced by optimally selecting clusters either having regular morphology or living in substructure-poor environment. The x-ray masses are biased low by a large amount (similar to 25-35%), evidencing the presence of both non-thermal sources of pressure in the intra-cluster medium (ICM) and temperature inhomogeneity, but they show a significantly lower scatter than weak-lensing-derived masses. The x-ray mass bias grows from the inner to the outer regions of the clusters. We find that both biases are weakly correlated with the third-order power ratio, while a stronger correlation exists with the centroid shift. Finally, the x-ray bias is strongly connected with temperature inhomogeneities. Comparison with a previous analysis of simulations leads to the conclusion that the values of x-ray mass bias from simulations are still uncertain, showing dependences on the ICM physical treatment and, possibly, on the hydrodynamical scheme adopted. C1 [Meneghetti, M.; Ettori, S.; Giocoli, C.] Osservatorio Astron Bologna, INAF, I-40127 Bologna, Italy. [Meneghetti, M.; Ettori, S.] Ist Nazl Fis Nucl, Sez Bologna, I-40127 Bologna, Italy. [Martino, R.; Mazzotta, P.] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy. [Borgani, S.; Tornatore, L.] Univ Trieste, Dipartmento Fis, Sez Astron, I-34131 Trieste, Italy. [Borgani, S.; Tornatore, L.] Osserv Astron Trieste, INAF, I-34131 Trieste, Italy. [Borgani, S.; Fabjan, D.; Tornatore, L.] Ist Nazl Fis Nucl, Trieste, Italy. [Bonafede, A.] Jacobs Univ Bremen, D-28759 Bremen, Germany. [Dolag, K.] Univ Observ Munchen, D-81679 Munich, Germany. [Fabjan, D.] Ctr Excellence SPACE SI, Ljubljana 1000, Slovenia. [Fabjan, D.] Univ Ljubljana, Fac Math & Phys, Ljubljana 1000, Slovenia. [Mazzotta, P.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Merten, J.] Heidelberg Univ, Zentrum Astron, ITA, D-6900 Heidelberg, Germany. [Merten, J.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Merten, J.] CALTECH, Pasadena, CA 91125 USA. [Radovich, M.] Osserv Astron Padova, INAF, I-35122 Padua, Italy. [Rasia, E.] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA. EM rasia@umich.edu; meneghetti.massimo@oabo.inaf.it RI Ettori, Stefano/N-5004-2015; Meneghetti, Massimo/O-8139-2015; Mazzotta, Pasquale/B-1225-2016; OI Ettori, Stefano/0000-0003-4117-8617; Meneghetti, Massimo/0000-0003-1225-7084; Mazzotta, Pasquale/0000-0002-5411-1748; rasia, elena/0000-0003-4175-002X; Radovich, Mario/0000-0002-3585-866X FU HPC-EUROPA2 [228398]; European Commission; National Science Foundation [PHY05-51164]; European Union; Ministry of Higher Education, Science and Technology of Slovenia; Michigan Center for Theoretical Physics; Michigan Society of Fellows; [ASI-INAF I/023/05/0]; [ASI-INAF I/088/06/0]; [PRIN-INAF-2009] FX We acknowledge financial support from contracts ASI-INAF I/023/05/0, ASI-INAF I/088/06/0, PRIN-INAF-2009 grant 'Towards an Italian Network for Computational Cosmology' and INFN PD51. This work has been performed under the HPC-EUROPA2 project (project number 228398) with the support of the European Commission-Capacities Area-Research Infrastructures. ER acknowledges the support of the Michigan Society of Fellows. MM, ER, PM, SB and SE thank the organizers of the workshop 'Galaxy cluster at the crossroads between astrophysics and cosmology', the KITP for hospitality and the National Science Foundation for financial support under grant no. PHY05-51164. SB acknowledges partial support from the European Commissions FP7 Marie Curie Initial Training Network CosmoComp (PITN-GA- 2009-238356). DF acknowledges support by the European Union and the Ministry of Higher Education, Science and Technology of Slovenia. This research was supported in part by the Michigan Center for Theoretical Physics. Simulations have been carried out at CINECA (Bologna, Italy), with CPU time allocated through an Italian SuperComputing Resource Allocation (ISCRA) project. NR 129 TC 98 Z9 98 U1 0 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 1367-2630 J9 NEW J PHYS JI New J. Phys. PD MAY 17 PY 2012 VL 14 AR 055018 DI 10.1088/1367-2630/14/5/055018 PG 36 WC Physics, Multidisciplinary SC Physics GA 953NC UT WOS:000304874200003 ER PT J AU Gingerich, O AF Gingerich, Owen TI The Day the World Discovered the Sun: An Extraordinary Story of Scientific Adventure and the Race to Track the Transit of Venus SO NATURE LA English DT Book Review C1 Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Gingerich, O (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM ginger@cfa.harvard.edu NR 1 TC 0 Z9 0 U1 0 U2 1 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD MAY 17 PY 2012 VL 485 IS 7398 BP 305 EP 306 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 943CW UT WOS:000304099100017 ER PT J AU Gingerich, O AF Gingerich, Owen TI Chasing Venus: The Race to Measure the Heavens SO NATURE LA English DT Book Review C1 Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Gingerich, O (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM ginger@cfa.harvard.edu NR 1 TC 0 Z9 0 U1 0 U2 0 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD MAY 17 PY 2012 VL 485 IS 7398 BP 305 EP 306 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 943CW UT WOS:000304099100016 ER PT J AU Becker, PA Miller, PS Gunther, MS Somers, MJ Wildt, DE Maldonado, JE AF Becker, Penny A. Miller, Philip S. Gunther, Micaela Szykman Somers, Michael J. Wildt, David E. Maldonado, Jesus E. TI Inbreeding Avoidance Influences the Viability of Reintroduced Populations of African Wild Dogs (Lycaon pictus) SO PLOS ONE LA English DT Article ID GENETIC DIVERSITY; NATURAL-POPULATIONS; SOCIAL-ORGANIZATION; KIN DISCRIMINATION; REPRODUCTIVE SKEW; EXTINCTION; SELECTION; FITNESS; CONSEQUENCES; RECOGNITION AB The conservation of many fragmented and small populations of endangered African wild dogs (Lycaon pictus) relies on understanding the natural processes affecting genetic diversity, demographics, and future viability. We used extensive behavioural, life-history, and genetic data from reintroduced African wild dogs in South Africa to (1) test for inbreeding avoidance via mate selection and (2) model the potential consequences of avoidance on population persistence. Results suggested that wild dogs avoided mating with kin. Inbreeding was rare in natal packs, after reproductive vacancies, and between sibling cohorts (observed on 0.8%, 12.5%, and 3.8% of occasions, respectively). Only one of the six (16.7%) breeding pairs confirmed as third-order (or closer) kin consisted of animals that were familiar with each other, while no other paired individuals had any prior association. Computer-simulated populations allowed to experience inbreeding had only a 1.6% probability of extinction within 100 years, whereas all populations avoiding incestuous matings became extinct due to the absence of unrelated mates. Populations that avoided mating with first-order relatives became extinct after 63 years compared with persistence of 37 and 19 years for those also prevented from second-order and third-order matings, respectively. Although stronger inbreeding avoidance maintains significantly more genetic variation, our results demonstrate the potentially severe demographic impacts of reduced numbers of suitable mates on the future viability of small, isolated wild dog populations. The rapid rate of population decline suggests that extinction may occur before inbreeding depression is observed. C1 [Becker, Penny A.; Maldonado, Jesus E.] Smithsonian Inst, Natl Zool Pk, Ctr Conservat & Evolutionary Genet, Smithsonian Conservat Biol Inst, Washington, DC 20008 USA. [Becker, Penny A.; Gunther, Micaela Szykman; Wildt, David E.] Smithsonian Inst, Natl Zool Pk, Ctr Species Survival, Smithsonian Conservat Biol Inst, Front Royal, VA USA. [Becker, Penny A.; Somers, Michael J.] Univ Pretoria, Ctr Wildlife Management, ZA-0002 Pretoria, South Africa. [Miller, Philip S.] Int Union Conservat Nat, Species Survival Commiss, Conservat Breeding Specialist Grp, Apple Valley, MN USA. [Gunther, Micaela Szykman] Humboldt State Univ, Dept Wildlife, Arcata, CA 95521 USA. [Maldonado, Jesus E.] Smithsonian Inst, Natl Museum Nat Hist, Dept Vertebrate Zool, Washington, DC 20560 USA. [Somers, Michael J.] Univ Pretoria, Ctr Invas Biol, ZA-0002 Pretoria, South Africa. RP Becker, PA (reprint author), Smithsonian Inst, Natl Zool Pk, Ctr Conservat & Evolutionary Genet, Smithsonian Conservat Biol Inst, Washington, DC 20008 USA. EM SpieringP@si.edu RI Somers, Michael/A-1523-2008; OI Szykman Gunther, Micaela/0000-0002-7822-8094; /0000-0002-5836-8823 FU Smithsonian Institution Undersecretary for Science Endowment Fund; University of Pretoria; Rotterdam Zoo Thandiza Fund; Humboldt State University; Conservation Endowment Fund of the Association of Zoos and Aquariums; Disney Wildlife Conservation Fund; Knowsley Safari Park; DST-NRF Centre of Excellence for Invasion Biology; Khaki Fever Work Wear; Pittsburgh Zoo Conservation Fund; Morris Animal Foundation FX This research was supported by the Smithsonian Institution Undersecretary for Science Endowment Fund, University of Pretoria, Rotterdam Zoo Thandiza Fund, Humboldt State University, Conservation Endowment Fund of the Association of Zoos and Aquariums, Disney Wildlife Conservation Fund, Knowsley Safari Park, DST-NRF Centre of Excellence for Invasion Biology, Khaki Fever Work Wear, Pittsburgh Zoo Conservation Fund, and the Morris Animal Foundation. International travel was generously provided by British Airways. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.; The authors have read the journal's policy and have the following conflicts: Funding for this study was provided by the following commercial sources: Disney Wildlife Conservation Fund, Knowsley Safari Park, Khaki Fever Work Wear, and Rotterdam Zoo Thandiza Fund. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials. NR 64 TC 3 Z9 3 U1 2 U2 57 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA SN 1932-6203 J9 PLOS ONE JI PLoS One PD MAY 16 PY 2012 VL 7 IS 5 SI 1 AR e37181 DI 10.1371/journal.pone.0037181 PG 11 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 959UR UT WOS:000305341300085 PM 22615933 ER PT J AU Turner, DD Mlawer, EJ Bianchini, G Cadeddu, MP Crewell, S Delamere, JS Knuteson, RO Maschwitz, G Mlynzcak, M Paine, S Palchetti, L Tobin, DC AF Turner, D. D. Mlawer, E. J. Bianchini, G. Cadeddu, M. P. Crewell, S. Delamere, J. S. Knuteson, R. O. Maschwitz, G. Mlynzcak, M. Paine, S. Palchetti, L. Tobin, D. C. TI Ground-based high spectral resolution observations of the entire terrestrial spectrum under extremely dry conditions SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID FOURIER-TRANSFORM SPECTROMETER; WATER-VAPOR; RADIANCE; INSTRUMENT AB A field experiment was conducted in northern Chile at an altitude of 5.3 km to evaluate the accuracy of line-by-line radiative transfer models in regions of the spectrum that are typically opaque at sea level due to strong water vapor absorption. A suite of spectrally resolved radiance instruments collected simultaneous observations that, for the first time ever, spanned the entire terrestrial thermal spectrum (i.e., from 10 to 3000 cm(-1), or 1000 to 3.3 mu m). These radiance observations, together with collocated water vapor and temperature profiles, are used to provide an initial evaluation of the accuracy of water vapor absorption in the far-infrared of two line-by-line radiative transfer models. These initial results suggest that the more recent of the two models is more accurate in the strongly absorbing water vapor pure rotation band. This result supports the validity of the Turner et al. (2012) study that demonstrated that the use of the more recent water vapor absorption model in climate simulations resulted in significant radiative and dynamical changes in the simulation relative to the older water vapor model. Citation: Turner, D. D., et al. (2012), Ground-based high spectral resolution observations of the entire terrestrial spectrum under extremely dry conditions, Geophys. Res. Lett., 39, L10801, doi:10.1029/2012GL051542. C1 [Turner, D. D.] NOAA, Natl Severe Storms Lab, Norman, OK 73072 USA. [Mlawer, E. J.; Delamere, J. S.] Atmospher & Environm Res Inc, Lexington, MA USA. [Bianchini, G.; Palchetti, L.] CNR, Ist Fis Applicata Nello Carrara, Sesto Fiorentino, Italy. [Cadeddu, M. P.] Argonne Natl Lab, Argonne, IL 60439 USA. [Crewell, S.; Maschwitz, G.] Univ Cologne, Inst Geophys & Meteorol, Cologne, Germany. [Knuteson, R. O.; Tobin, D. C.] Univ Wisconsin, Ctr Space Sci & Engn, Madison, WI 53706 USA. [Mlynzcak, M.] NASA, Langley Res Ctr, Hampton, VA 23665 USA. [Paine, S.] Smithsonian Astrophys Observ, Cambridge, MA USA. RP Turner, DD (reprint author), NOAA, Natl Severe Storms Lab, 120 David L Boren Blvd, Norman, OK 73072 USA. EM dave.turner@noaa.gov RI Crewell, Susanne/O-1640-2013; PALCHETTI, LUCA/O-1270-2015; OI Crewell, Susanne/0000-0003-1251-5805; PALCHETTI, LUCA/0000-0003-4022-8125; Paine, Scott/0000-0003-4622-5857 FU Office of Science, Office of Biological and Environmental Research, Climate and Environmental Sciences Division; NASA; Italian National Research Council; Smithsonian Institution; German Science Foundation (DFG) FX The RHUBC-II campaign was organized as part of the U. S. Department of Energy's Atmospheric Radiation Measurement (ARM) program, which is sponsored by the Office of Science, Office of Biological and Environmental Research, Climate and Environmental Sciences Division. RHUBC-II was also supported in part by NASA, the Italian National Research Council, the Smithsonian Institution, and the German Science Foundation (DFG). We would like to thank the many scientists and engineers who helped make the collection of this dataset possible, including Alex Carrizo and operations staff at AstroNorte, Kim Nitschke, Jim Mather, Charles Brinkmann, Troy Culgan, Mike Ryzcek, Rich Cageao, Glenn Farnsworth, Mike Wojcik, Jason Swasey, Joe Lee, Erik Syrstad, Dave Johnson, Julio Marin, Arlette Chacon, Toufic Hawat, Huabai Li, Marcos Diaz, Francesco Castagnoli, Denny Hackel, Ray Garcia, Hank Revercomb, Rich Coulter, and Tim Wagner. Additional information on the RHUBC-II experiment can be found at http://acrf-campaign.arm.gov/rhubc/. RHUBC-II data are available from the ARM data archive as an IOP dataset at http://www.archive.arm.gov. NR 20 TC 15 Z9 15 U1 0 U2 11 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD MAY 16 PY 2012 VL 39 AR L10801 DI 10.1029/2012GL051542 PG 5 WC Geosciences, Multidisciplinary SC Geology GA 945GQ UT WOS:000304261500003 ER PT J AU MacPherson, GJ Kita, NT Ushikubo, T Bullock, ES Davis, AM AF MacPherson, G. J. Kita, N. T. Ushikubo, T. Bullock, E. S. Davis, A. M. TI Well-resolved variations in the formation ages for Ca-Al-rich inclusions in the early Solar System SO EARTH AND PLANETARY SCIENCE LETTERS LA English DT Article DE Al-26; calcium-aluminum-rich inclusions; chronology; early Solar System ID PROTOPLANETARY DISK; REFRACTORY INCLUSIONS; AL-26; AL-26/AL-27; MG; CONSTRAINTS; CHONDRULES; DIFFUSION; MAGNESIUM; NEBULA AB Recent whole-rock magnesium-isotopic data for calcium-aluminum-rich inclusions (CAIs) in chondrite meteorites indicate that the primary nebular fractionation of aluminum from magnesium, probably by condensation, occurred within <20,000 years at 4.567 Ga. However, high-precision multicollector ion microprobe data for diverse CAIs from Vigarano (CV3) yield internal isochrons with a clearly resolved spread in initial Al-26/Al-27, meaning that CAIs formed and were reprocessed over a much longer time span. Primitive (unmelted) CAIs have a consistent value of 52 +/- 0.1 x 10(-5), melted CAIs range from 5.17 x 10(-5) to 4.24 x 10(-5), and one single object with a complex multistage history has an internal range of Al-26/Al-27 = (4.77 - 2.77) x 10(-5). The entire range corresponds to an age span of similar to 0.7 Ma. Thus not all CAIs formed at "time zero", and only the most primitive CAIs should be used as benchmarks for earliest Solar System chronology. Published by Elsevier B.V. C1 [MacPherson, G. J.; Bullock, E. S.] Smithsonian Inst, Dept Mineral Sci, Natl Museum Nat Hist, Washington, DC 20560 USA. [Kita, N. T.; Ushikubo, T.] Univ Wisconsin, Dept Geosci, WiscSIMS, Madison, WI 53706 USA. [Davis, A. M.] Univ Chicago, Dept Geophys Sci, Chicago, IL 60637 USA. [Davis, A. M.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. RP MacPherson, GJ (reprint author), Smithsonian Inst, Dept Mineral Sci, Natl Museum Nat Hist, Washington, DC 20560 USA. EM macphers@si.edu RI Kita, Noriko/H-8035-2016; OI Kita, Noriko/0000-0002-0204-0765; Davis, Andrew/0000-0001-7955-6236 FU NASA [NNX07AJ05G, NNX09AG39G, NNX09AB88G]; NSF [EAR03-19230, EAR07-44079] FX We are grateful to F. Richter for numerous discussions, and to two anonymous reviewers whose detailed and constructive reviews greatly improved the manuscript. This research was supported by NASA grants NNX07AJ05G (G.J.M., PI), NNX09AG39G (A.M.D., PI), and NNX09AB88G (NK, PI). WiscSIMS is partly supported by NSF (EAR03-19230, EAR07-44079). NR 25 TC 51 Z9 52 U1 0 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0012-821X J9 EARTH PLANET SC LETT JI Earth Planet. Sci. Lett. PD MAY 15 PY 2012 VL 331 BP 43 EP 54 DI 10.1016/j.epsl.2012.03.010 PG 12 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 969BK UT WOS:000306030500005 ER PT J AU Bayona, G Cardona, A Jaramillo, C Mora, A Montes, C Valencia, V Ayala, C Montenegro, O Ibanez-Mejia, M AF Bayona, German Cardona, Agustin Jaramillo, Carlos Mora, Andres Montes, Camilo Valencia, Victor Ayala, Carolina Montenegro, Omar Ibanez-Mejia, Mauricio TI Early Paleogene magmatism in the northern Andes: Insights on the effects of Oceanic Plateau-continent convergence SO EARTH AND PLANETARY SCIENCE LETTERS LA English DT Article DE Paleogene; magmatism; northern Andes; subduction; intraplate magmatism ID MIDDLE MAGDALENA VALLEY; U-PB AGES; LLANOS FORELAND BASIN; AMERICAN LAND-BRIDGE; EASTERN CORDILLERA; TECTONIC EVOLUTION; CARIBBEAN PLATE; SOUTH-AMERICA; ZIRCON GEOCHRONOLOGY; TERRANE ACCRETION AB Recognition of magmatic events in polyphase arc-continent collision margin is critical for proper tectonic reconstructions that trace the short and changing nature of the configuration of the continental margin. Additionally, the recognition of the origin of detrital volcanic zircons within continental basins becomes a challenge if only distant oceanic and continental magmatic arcs are considered as the only possible source. In this study we report U/Pb zircon ages in isolated plutons that support an early Paleogene magmatic arc that extended ca 700 km along the northern Andean continental margin. Additional detrital zircon Paleogene ages (45-65 Ma), from Paleocene-lower Eocene continental sandstones and volcaniclastic rocks in 19 localities from Colombian and Venezuela Andean basins, indicate that volcanic detritus were supplied from a magmatic arc striking parallel to the subduction zone and also show the existence of intraplate magmatism extending more than 400 km inland. The wide distribution of this Early Paleogene magmatism along the northern South America margin is related to subduction of the buoyant Caribbean plate; the relative short period of magmatism (<10 myr) and sudden stop in early middle Eocene time may be related to the difficulty of the thick plateau to subduct and the relative strike-slip movement of the South America and Caribbean plates since middle Eocene due to northward migration of those plates. (C) 2012 Elsevier B.V. All rights reserved. C1 [Bayona, German; Cardona, Agustin; Jaramillo, Carlos; Montes, Camilo; Ayala, Carolina; Montenegro, Omar] Corp Geol ARES, Bogota, Colombia. [Cardona, Agustin] Univ Nacl Colombia, Medellin, Colombia. [Jaramillo, Carlos] Smithsonian Trop Res Inst, Ciudad De Panama, Panama. [Mora, Andres] Inst Colombiano Petr, Bucaramanga, Colombia. [Montes, Camilo] Univ Los Andes, Bogota, Colombia. [Valencia, Victor] Washington State Univ, Sch Earth & Enviromental Sci, Pullman, WA 99164 USA. [Ibanez-Mejia, Mauricio] Univ Arizona, Dept Geosci, Tucson, AZ 85721 USA. RP Bayona, G (reprint author), Corp Geol ARES, Calle 44A N 53-96, Bogota, Colombia. EM gbayona@cgares.org OI Ibanez-Mejia, Mauricio/0000-0002-7839-2425; Montes, Camilo/0000-0002-3553-0787 FU Corporacion Geologica ARES; Colciencias; Ecopetrol S.A-ICP (project "Cronologia de la deformacion de cuencas subandinas"); Hocol S.A. FX This research was funded by Corporacion Geologica ARES, Colciencias, Ecopetrol S.A-ICP (project "Cronologia de la deformacion de cuencas subandinas"), Hocol S.A. and Maurel & Prom. Andres Mesa (Hocol S.A.) provided the location of Paleocene sandstones in localities 7 and 9. Comments of Mauricio Parra and two anonymous reviewers improved the content of this manuscript. NR 95 TC 20 Z9 20 U1 0 U2 16 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0012-821X J9 EARTH PLANET SC LETT JI Earth Planet. Sci. Lett. PD MAY 15 PY 2012 VL 331 BP 97 EP 111 DI 10.1016/j.epsl.2012.03.015 PG 15 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 969BK UT WOS:000306030500009 ER PT J AU Burgess, EA Lanyon, JM Brown, JL Blyde, D Keeley, T AF Burgess, Elizabeth A. Lanyon, Janet M. Brown, Janine L. Blyde, David Keeley, Tamara TI Diagnosing pregnancy in free-ranging dugongs using fecal progesterone metabolite concentrations and body morphometrics: A population application SO GENERAL AND COMPARATIVE ENDOCRINOLOGY LA English DT Article DE Dugong dugon; Fecal hormones; Progesterone; Pregnancy; Body morphometrics; Free-ranging; Ultrasonography ID MONITORING OVARIAN-FUNCTION; MANATEE TRICHECHUS-MANATUS; STEROID METABOLITES; REPRODUCTIVE STATUS; ENZYME-IMMUNOASSAY; LIFE-HISTORY; QUEENSLAND; HORMONES; CYCLE; VALIDATION AB Assessing reproductive status and monitoring reproductive rates is important in the effective management of vulnerable marine mammal species such as the dugong (Dugong dugon). Knowledge of the reproductive physiology of this species is limited, and determining reproductive parameters (e.g., sexual maturation, pregnancy, and reproductive senescence) has been restricted by a lack of non-lethal methods for assessing reproductive status in free-ranging individuals. The aim of this study was to develop a method to identify pregnant individuals in a wild dugong population. Using an enzymeimmunoassay, we quantified concentrations of fecal progesterone metabolites (fP) in 322 dugongs, including confirmed pregnant females (n = 10), presumed non-pregnant adult females (n = 25), juvenile females (n = 24), sub-adult females (n = 41), adult females of unknown pregnancy state (n = 63), and males of all sizes (n = 159). External body morphometrics of each dugong were measured, and confirmation of pregnancy in adult female dugongs was determined by ultrasonography or observation of subsequent neonates. Concentrations of fP were different between sexes and reproductive size classes (P < 0.001), and similar to 30-fold higher in confirmed pregnant dugongs (2017-7760 ng/g) compared to presumed non-pregnant females (30-221 ng/g), juvenile females (29-195 ng/g), and males (24-261 ng/g) (P < 0.001). Body measures of maximum and anal girths, and teat length were all greater in confirmed pregnant females than presumed non-pregnant females (all P < 0.05). We evaluated a Discriminant Function Analysis (DFA) to provide a model for predicting pregnant and non-pregnant dugongs. Cross-validated results showed that the DFA correctly classified 100% of pregnant and non-pregnant females using fP concentrations, body length, fineness ratio (an index of body shape), and teat length (a female reproductive trait). Using the DFA model, we classified the pregnancy status of all female dugongs and identified a total of 30 females as pregnant and 133 females as non-pregnant from the sampled population over the sample period. Pregnant dugongs in the Moreton Bay population are characterized by fecal progesterone metabolite concentrations > 1000 ng/g, body length >= 260 cm, maximum girth >= 215 cm, anal girth >= 126 cm, and teat length 5 >= cm long. In summary, analysis of fP concentrations in combination with body morphometrics may be used to diagnose pregnancy in free-ranging dugongs, and provides a new tool to monitor breeding rates of wild sirenian populations. (C) 2012 Elsevier Inc. All rights reserved. C1 [Burgess, Elizabeth A.; Lanyon, Janet M.] Univ Queensland, Sch Biol Sci, St Lucia, Qld 4072, Australia. [Brown, Janine L.] Smithsonian Conservat Biol Inst, Ctr Species Survival, Front Royal, VA 22630 USA. [Blyde, David] Sea World Australia, Surfers Paradise, Qld 4217, Australia. [Keeley, Tamara] Taronga Western Plains Zoo, Dubbo, NSW 2830, Australia. RP Burgess, EA (reprint author), Univ Queensland, Sch Biol Sci, St Lucia, Qld 4072, Australia. EM e.burgess1@uq.edu.au; j.lanyon@uq.edu.au; brownjan@si.edu; David.Blyde@wvtp.com.au; Tkeeley@zoo.nsw.gov.au FU Winifred Violet Scott Foundation; Unimin Ltd (formerly Consolidated Rutile Ltd); Sydney Aquarium Conservation Fund; M.A. Ingram Fund Trust; AWARE Foundation; Australian Geographic Society; Australian Marine Mammal Centre; Australian Postgraduate Award; Queensland-Smithsonian FX Many thanks to the dedication of everyone in The University of Queensland (UQ) Dugong Research Team, in particular Helen Sneath, Erin Neal, Rob Slade, Paul Sprecher, Ben Schemel, Merrick Ekins, Giovanni Damiani, Nick Holmes, John and Tyler Gilbert, Dave Fields, and Jan Chambers. Trevor Long and the Sea World Research and Rescue Foundation provided generous in-kind support for the dugong health assessment program. We are very grateful to Wendy Blanshard for her support with ultrasonography, and other Sea World staff including Nick Anson and Johnno Wordsworth, as well as Andrew Barnes from Sydney Aquarium. Bob Bonde and Cathy Beck (USGS) assisted with blood collection in 2008. Thanks also to Jennifer Seddon (UQ Veterinary Science) for assisting with genetic identification of dugongs, and also to Nicole Presley for her help with HPLC analysis. This research was supported financially by the Winifred Violet Scott Foundation, Unimin Ltd. (formerly Consolidated Rutile Ltd), Sydney Aquarium Conservation Fund, M.A. Ingram Fund Trust, Project AWARE Foundation, Australian Geographic Society, and Australian Marine Mammal Centre. E. A. Burgess was the recipient of an Australian Postgraduate Award and awarded a Queensland-Smithsonian Fellowship to further this study. Two anonymous reviewers provided helpful comments on the manuscript. Dugongs were sampled under The University of Queensland Animal Ethics #ZOO/ENT/344/04/NSF/CRL, #SIB/215/ 08/ACAMMS, #ZOO/ENT/737/08/ARC/CRL/SW/AMMC, Moreton Bay Marine Parks permit #Q52004/CVL228 to #QS2008/CVL228 and Scientific Purposes permits #WISP01660304 to WISPO49 37308. NR 60 TC 9 Z9 9 U1 3 U2 30 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0016-6480 J9 GEN COMP ENDOCR JI Gen. Comp. Endocrinol. PD MAY 15 PY 2012 VL 177 IS 1 BP 82 EP 92 DI 10.1016/j.ygcen.2012.02.008 PG 11 WC Endocrinology & Metabolism SC Endocrinology & Metabolism GA 948OC UT WOS:000304511500011 PM 22387986 ER PT J AU Riley, S AF Riley, Sheila TI Don't Mess with Travis SO LIBRARY JOURNAL LA English DT Book Review C1 [Riley, Sheila] Smithsonian Inst Libs, Washington, DC 20560 USA. RP Riley, S (reprint author), Smithsonian Inst Libs, Washington, DC 20560 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU REED BUSINESS INFORMATION PI NEW YORK PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010 USA SN 0363-0277 J9 LIBR J JI Libr. J. PD MAY 15 PY 2012 VL 137 IS 9 BP 75 EP 75 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA 944CW UT WOS:000304177000061 ER PT J AU Gardner-Vandy, KG Lauretta, DS Greenwood, RC McCoy, TJ Killgore, M Franchi, IA AF Gardner-Vandy, Kathryn G. Lauretta, Dante S. Greenwood, Richard C. McCoy, Timothy J. Killgore, Marvin Franchi, Ian A. TI The Tafassasset primitive achondrite: Insights into initial stages of planetary differentiation SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID CARBONACEOUS CHONDRITE GROUP; OXYGEN ISOTOPES; SYSTEM; METAL; THERMODYNAMICS; CLASSIFICATION; ACAPULCOITES; BRACHINITES; INDICATORS; LODRANITES AB Tafassasset is an exceptional meteorite that has been linked to both the CR chondrites and the primitive achondrites. Because previous evidence suggests it might be a primitive achondrite from a known chondrite type, we have undertaken a study of the petrology, geochemistry, and formation history of the meteorite. Tafassasset is predominantly FeO-rich olivine (similar to 58%) yet contains abundant Fe, Ni-metal (similar to 10 vol.%) and sulfide (similar to 3 vol.%). Other phases include high-and low-Ca pyroxene, plagioclase, chromite, and phosphate. It has a recrystallized texture, containing equigranular grains that often meet at 120 degrees triple junctions. There are no relict chondrules in the thin sections examined, although they have been reported previously. Electron microprobe analyses reveal homogeneous olivine (Fa(28.6)), both low-and high-Ca pyroxene (Fs(23.6)Wo(3.7) and Fs(12.2)Wo(39.3+/-1)), a range of plagioclase composition (An(23-47)), Fe, Ni-metal (with 5.3-36.6 wt.% Ni and 0.1-0.8 wt.% Co), troilite, chromite, and Ca-phosphate. Bulk composition analyses reveal two chips depleted in refractory lithophile and some siderophile elements compared to CI chondrites. Exceptions are enrichments in Fe, Ni and Co. A third chip is essentially chondritic in bulk composition. Different stones of the meteorite have slightly different oxygen isotope composition, yet all lie in the CR chondrite trend with one in the acapulcoite-lodranite field. Thermodynamic calculations show that Tafassasset equilibrated at a temperature above the Fe, Ni-FeS eutectic and at an oxygen fugacity of similar to IW-1. The texture, heterogeneous distribution of mineral phases, plagioclase composition, two-mineral closure temperatures, and bulk composition all provide evidence that Tafassasset partially melted on its parent body. A comparison with the CR chondrites, the brachinites, and two anomalous achondrites indicates that Tafassasset is most similar to ungrouped primitive achondrites Lewis Cliff (LEW) 88763 and Divnoe, and to the brachinites in overall petrography, modal mineralogy, mineral compositions, oxidation state, and bulk composition. The comparison also excludes the possibility that Tafassasset formed by partial melting of a CR chondrite. Tafassasset is a primitive achondrite and likely evolved on a parent body that experienced incomplete melting, never reached isotopic homogeneity, and was from the same oxygen isotopic reservoir as the CR chondrite parent body. (C) 2012 Elsevier Ltd. All rights reserved. C1 [Gardner-Vandy, Kathryn G.; Lauretta, Dante S.] Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA. [Greenwood, Richard C.; Franchi, Ian A.] Open Univ, Planetary & Space Sci Res Inst, Milton Keynes MK7 6AA, Bucks, England. [McCoy, Timothy J.] Smithsonian Inst, Natl Museum Nat Hist, Washington, DC 20013 USA. [Killgore, Marvin] SW Meteorite Lab, Payson, AZ 85547 USA. RP Gardner-Vandy, KG (reprint author), Univ Arizona, Lunar & Planetary Lab, 1629 E Univ Blvd, Tucson, AZ 85721 USA. EM kgardner@lpl.arizona.edu FU NASA [NNX09AQ88H, NNX10AH50G]; University of Arizona/Alfred P. Sloan Foundation FX We thank Ken Domanik for help with EMPA and use of the IQmaterials (TM) program, Yulia Goreva for help with ICP-MS technique, Mark Ghiorso for supplying the supplemental MELTS calculator, and both Harold C. Connolly, Jr. and Devin Schrader for many useful discussions about CR chondrites. We also think the Southwest Meteorite Laboratory and the Museum National d'Histoire Naturelle in Paris, France for donating large chips of Tafassasset and loaning us many thin sections for analysis. This work was funded by NASA Grants NNX09AQ88H and NNX10AH50G to D. S. L. and the University of Arizona/Alfred P. Sloan Foundation Indigenous Graduate Partnership Fellowship to K.G.G.V. NR 50 TC 13 Z9 13 U1 1 U2 16 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0016-7037 J9 GEOCHIM COSMOCHIM AC JI Geochim. Cosmochim. Acta PD MAY 15 PY 2012 VL 85 BP 142 EP 159 DI 10.1016/j.gca.2012.01.014 PG 18 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 930AH UT WOS:000303107200008 ER PT J AU Diefendorf, AF Freeman, KH Wing, SL AF Diefendorf, Aaron F. Freeman, Katherine H. Wing, Scott L. TI Distribution and carbon isotope patterns of diterpenoids and triterpenoids in modern temperate C-3 trees and their geochemical significance SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID POLYCYCLIC AROMATIC-HYDROCARBONS; EARLY DIAGENESIS; ORGANIC GEOCHEMISTRY; LIPID BIOSYNTHESIS; THERMAL MAXIMUM; FRACTIONATION; PLANTS; EOCENE; TERPENOIDS; BIOMARKER AB Tricyclic diterpenoids and pentacyclic triterpenoids are nearly exclusively produced by gymnosperms and angiosperms, respectively. Even though both classes of terpenoids have long been recognized as plant biomarkers, their potential use as phylogenetically specific delta C-13 proxies remains largely unexplored. Little is known of how terpenoid abundance and carbon isotope composition vary either with plant phylogenetic position, functional group, or during synthesis. Here, we report terpenoid abundances and isotopic data for 44 tree species in 21 families, representing both angiosperms and gymnosperms, and both deciduous and evergreen leaf habits. Di- and triterpenoid abundances are significantly higher in evergreens compared to deciduous species, reflecting differences in growth strategies and increased chemical investment in longer-lived leaves. Carbon isotope abundances of terpenoid lipids are similar to leaf tissues, indicating biosynthetic isotope effects are small for both the MVA (-0.4 parts per thousand) and MEP (-0.6 parts per thousand) pathways. Leaf and molecular isotopic patterns for modern plants are consistent with observations of amber, resins and plant biomarkers in ancient sediments. The delta C-13 values of ancient diterpenoids are higher than triterpenoids by 2-5 parts per thousand, consistent with observed isotopic differences between gymnosperms and angiosperms leaves, and support the relatively small lipid biosynthetic effects reported here. All other factors being equal, evergreen plants will dominate the abundance of terpenoids contributed to soils, sediments and ancient archives, with similar inputs estimated for angiosperm and gymnosperm trees when scaled by litter flux. (C) 2012 Elsevier Ltd. All rights reserved. C1 [Diefendorf, Aaron F.] Univ Cincinnati, Dept Geol, Cincinnati, OH 45221 USA. [Freeman, Katherine H.] Penn State Univ, Dept Geosci, University Pk, PA 16802 USA. [Wing, Scott L.] Smithsonian Inst, Dept Paleobiol, Washington, DC 20013 USA. RP Diefendorf, AF (reprint author), Univ Cincinnati, Dept Geol, Cincinnati, OH 45221 USA. EM aaron.diefendorf@uc.edu OI Wing, Scott/0000-0002-2954-8905 FU National Science Foundation [EAR-0844212]; Penn State Biogeochemical Research Initiative for Education (BRIE); National Science Foundation IGERT [DGE-9972759] FX We thank Laurie Eccles for laboratory preparation, Kevin Mueller and Heather Graham for sample collection and laboratory assistance, Emily Diefendorf for sample collection assistance, and Denny Walizer for instrumentation support. We thank Roger Summons, Katherine French, Ken Sawada and an anonymous reviewer for helpful and insightful revisions to the manuscript. This research was supported by the National Science Foundation Grant EAR-0844212 (to K. H. F.) and fellowship awards from the Penn State Biogeochemical Research Initiative for Education (BRIE) funded by the National Science Foundation IGERT Grant DGE-9972759. NR 71 TC 13 Z9 13 U1 4 U2 39 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0016-7037 J9 GEOCHIM COSMOCHIM AC JI Geochim. Cosmochim. Acta PD MAY 15 PY 2012 VL 85 BP 342 EP 356 DI 10.1016/j.gca.2012.02.016 PG 15 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 930AH UT WOS:000303107200021 ER PT J AU McLaughlin, BM Ballance, CP AF McLaughlin, B. M. Ballance, C. P. TI Photoionization cross sections for the trans-iron element Se+ from 18 to 31 eV SO JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS LA English DT Article ID GIANT BRANCH STARS; ELECTRON-IMPACT EXCITATION; S-PROCESS ABUNDANCES; R-MATRIX CALCULATION; PLANETARY-NEBULAE; ATOMIC DATA; RESONANCES; SCATTERING; EVOLUTION; PROGRAM AB Absolute photoionization cross-section calculations are presented for Se+ using large-scale close-coupling calculations within the Breit-Pauli and Dirac-Coulomb R-matrix approximations. The results from our theoretical work are compared with recent measurements (Esteves 2010 PhD Thesis publication number AAI3404727, University of Reno, NV, USA; Sterling et al 2011 J. Phys. B: At. Mol. Opt. Phys. 44 025701; Esteves et al 2011 Phys. Rev. A 84 013406) made at the advanced light source (ALS) radiation facility in Berkeley, CA, USA. We report on results for the photon energy range 18.0-31.0 eV, which spans the ionization thresholds of the S-4(3/2)o ground state and the low-lying D-2(5/2,3/2)o and P-2(3/2,1/2)o metastable states. Metastable fractions are inferred from our present work. Resonance energies and quantum defects of the prominent Rydberg resonances series identified in the spectra are compared for the 4p -> nd transitions with the recent ALS experimental measurements made on this complex trans-iron element. C1 [McLaughlin, B. M.] Queens Univ Belfast, Ctr Theoret Atom Mol & Opt Phys, Sch Math & Phys, Belfast BT7 1NN, Antrim, North Ireland. [McLaughlin, B. M.] Harvard Smithsonian Ctr Astrophys, Inst Theoret Atom & Mol Phys, Cambridge, MA 02138 USA. [Ballance, C. P.] Auburn Univ, Dept Phys, Allison Lab 206, Auburn, AL 36849 USA. RP McLaughlin, BM (reprint author), Queens Univ Belfast, Ctr Theoret Atom Mol & Opt Phys, Sch Math & Phys, David Bates Bldg,7 Coll Pk, Belfast BT7 1NN, Antrim, North Ireland. EM b.mclaughlin@qub.ac.uk; ballance@physics.auburn.edu FU US Department of Energy (DoE) through Auburn University; US National Science Foundation FX CPB was supported by US Department of Energy (DoE) grants through Auburn University. BMM acknowledges support by the US National Science Foundation through a grant to ITAMP at the Harvard-Smithsonian Center for Astrophysics. We thank David A Esteves for providing us with the ALS experimental data and a copy of his thesis. The computational work was carried out at the National Energy Research Scientific Computing Center in Oakland, CA, USA, and on the Tera-grid at the National Institute for Computational Sciences (NICS) in Knoxville, TN, USA. NR 44 TC 21 Z9 21 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-4075 J9 J PHYS B-AT MOL OPT JI J. Phys. B-At. Mol. Opt. Phys. PD MAY 14 PY 2012 VL 45 IS 9 AR 095202 DI 10.1088/0953-4075/45/9/095202 PG 13 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 934CB UT WOS:000303417000006 ER PT J AU Russell, CT Raymond, CA Coradini, A McSween, HY Zuber, MT Nathues, A De Sanctis, MC Jaumann, R Konopliv, AS Preusker, F Asmar, SW Park, RS Gaskell, R Keller, HU Mottola, S Roatsch, T Scully, JEC Smith, DE Tricarico, P Toplis, MJ Christensen, UR Feldman, WC Lawrence, DJ McCoy, TJ Prettyman, TH Reedy, RC Sykes, ME Titus, TN AF Russell, C. T. Raymond, C. A. Coradini, A. McSween, H. Y. Zuber, M. T. Nathues, A. De Sanctis, M. C. Jaumann, R. Konopliv, A. S. Preusker, F. Asmar, S. W. Park, R. S. Gaskell, R. Keller, H. U. Mottola, S. Roatsch, T. Scully, J. E. C. Smith, D. E. Tricarico, P. Toplis, M. J. Christensen, U. R. Feldman, W. C. Lawrence, D. J. McCoy, T. J. Prettyman, T. H. Reedy, R. C. Sykes, M. E. Titus, T. N. TI Dawn at Vesta: Testing the Protoplanetary Paradigm SO SCIENCE LA English DT Article ID PARENT BODY; EVOLUTION; DIFFERENTIATION; DIOGENITES; EUCRITE; ORIGIN; CORE; SIZE AB The Dawn spacecraft targeted 4 Vesta, believed to be a remnant intact protoplanet from the earliest epoch of solar system formation, based on analyses of howardite-eucrite-diogenite (HED) meteorites that indicate a differentiated parent body. Dawn observations reveal a giant basin at Vesta's south pole, whose excavation was sufficient to produce Vesta-family asteroids (Vestoids) and HED meteorites. The spatially resolved mineralogy of the surface reflects the composition of the HED meteorites, confirming the formation of Vesta's crust by melting of a chondritic parent body. Vesta's mass, volume, and gravitational field are consistent with a core having an average radius of 107 to 113 kilometers, indicating sufficient internal melting to segregate iron. Dawn's results confirm predictions that Vesta differentiated and support its identification as the parent body of the HEDs. C1 [Russell, C. T.] Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90095 USA. [Raymond, C. A.; Konopliv, A. S.; Asmar, S. W.; Park, R. S.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Coradini, A.; De Sanctis, M. C.] Ist Nazl Astrofis, Ist Astrofis & Planetol Spaziali, Rome, Italy. [McSween, H. Y.] Univ Tennessee, Dept Earth & Planetary Sci, Knoxville, TN 37996 USA. [Zuber, M. T.; Smith, D. E.] MIT, Cambridge, MA 02139 USA. [Nathues, A.; Keller, H. U.; Christensen, U. R.] Max Planck Inst Sonnensyst Forsch, D-37191 Katlenburg Lindau, Germany. [Jaumann, R.; Preusker, F.; Mottola, S.; Roatsch, T.] DLR, Inst Planetary Res, Berlin, Germany. [Scully, J. E. C.] Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90095 USA. [Gaskell, R.; Tricarico, P.; Feldman, W. C.; Prettyman, T. H.; Reedy, R. C.; Sykes, M. E.] Planetary Sci Inst, Tucson, AZ 85719 USA. [Toplis, M. J.] Univ Toulouse, Inst Rech Astrophys & Planetol, Toulouse, France. [Lawrence, D. J.] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA. [McCoy, T. J.] Smithsonian Inst, Washington, DC 20560 USA. [Titus, T. N.] US Geol Survey, Flagstaff, AZ 86001 USA. RP Russell, CT (reprint author), Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90095 USA. EM ctrussell@igpp.ucla.edu RI Russell, Christopher/E-7745-2012; De Sanctis, Maria Cristina/G-5232-2013; Lawrence, David/E-7463-2015; OI Russell, Christopher/0000-0003-1639-8298; De Sanctis, Maria Cristina/0000-0002-3463-4437; Lawrence, David/0000-0002-7696-6667; Reedy, Robert/0000-0002-2189-1303; Prettyman, Thomas/0000-0003-0072-2831 FU NASA; [NNM05AA86C] FX We thank the Dawn team for the development, cruise, orbital insertion, and operations of the Dawn spacecraft at Vesta. C. T. R. is supported by the Discovery Program through contract NNM05AA86C to the University of California, Los Angeles. A portion of this work was performed at the Jet Propulsion Laboratory, California Institute of Technology, under contract with NASA. Dawn data are archived with the NASA Planetary Data System. NR 27 TC 205 Z9 207 U1 2 U2 42 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD MAY 11 PY 2012 VL 336 IS 6082 BP 684 EP 686 DI 10.1126/science.1219381 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 940EH UT WOS:000303872300039 PM 22582253 ER PT J AU Reddy, V Nathues, A Le Corre, L Sierks, H Li, JY Gaskell, R McCoy, T Beck, AW Schroder, SE Pieters, CM Becker, KJ Buratti, BJ Denevi, B Blewett, DT Christensen, U Gaffey, MJ Gutierrez-Marques, P Hicks, M Keller, HU Maue, T Mottola, S McFadden, LA McSween, HY Mittlefehldt, D O'Brien, DP Raymond, C Russell, C AF Reddy, Vishnu Nathues, Andreas Le Corre, Lucille Sierks, Holger Li, Jian-Yang Gaskell, Robert McCoy, Timothy Beck, Andrew W. Schroeder, Stefan E. Pieters, Carle M. Becker, Kris J. Buratti, Bonnie J. Denevi, Brett Blewett, David T. Christensen, Ulrich Gaffey, Michael J. Gutierrez-Marques, Pablo Hicks, Michael Keller, Horst Uwe Maue, Thorsten Mottola, Stefano McFadden, Lucy A. McSween, Harry Y. Mittlefehldt, David O'Brien, David P. Raymond, Carol Russell, Christopher TI Color and Albedo Heterogeneity of Vesta from Dawn SO SCIENCE LA English DT Article ID PARENT BODY; METEORITES; EUCRITE; EARTH; SIZE AB Multispectral images (0.44 to 0.98 mm) of asteroid (4) Vesta obtained by the Dawn Framing Cameras reveal global color variations that uncover and help understand the north-south hemispherical dichotomy. The signature of deep lithologies excavated during the formation of the Rheasilvia basin on the south pole has been preserved on the surface. Color variations (band depth, spectral slope, and eucrite-diogenite abundance) clearly correlate with distinct compositional units. Vesta displays the greatest variation of geometric albedo (0.10 to 0.67) of any asteroid yet observed. Four distinct color units are recognized that chronicle processes-including impact excavation, mass wasting, and space weathering-that shaped the asteroid's surface. Vesta's color and photometric diversity are indicative of its status as a preserved, differentiated protoplanet. C1 [Reddy, Vishnu; Nathues, Andreas; Le Corre, Lucille; Sierks, Holger; Schroeder, Stefan E.; Christensen, Ulrich; Gutierrez-Marques, Pablo; Maue, Thorsten] Max Planck Inst Solar Syst Res, D-37191 Katlenburg Lindau, Germany. [Reddy, Vishnu; Gaffey, Michael J.] Univ N Dakota, Dept Space Studies, Grand Forks, ND 58202 USA. [Li, Jian-Yang] Univ Maryland, Dept Astron, College Pk, MD 20742 USA. [Gaskell, Robert; O'Brien, David P.] Planetary Sci Inst, Tucson, AZ 85719 USA. [McCoy, Timothy; Beck, Andrew W.] Smithsonian Natl Museum Nat Hist, Dept Mineral Sci, Washington, DC 20560 USA. [Pieters, Carle M.] Brown Univ, Dept Geol Sci, Providence, RI 02912 USA. [Becker, Kris J.] US Geol Survey, Astrogeol Sci Ctr, Flagstaff, AZ 86001 USA. [Buratti, Bonnie J.; Hicks, Michael; Raymond, Carol] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Denevi, Brett; Blewett, David T.] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA. [Keller, Horst Uwe] TU Braunschweig, Inst Geophys & Extraterr Phys, DE-38106 Braunschweig, Germany. [Mottola, Stefano] Deutsch Zentrum Luft & Raumfahrt DLR, German Aerosp Ctr, Inst Planetary Res, D-12489 Berlin, Germany. [McFadden, Lucy A.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [McSween, Harry Y.] Univ Tennessee, Dept Earth & Planetary Sci, Knoxville, TN 37996 USA. [Mittlefehldt, David] NASA, Lyndon B Johnson Space Ctr, Astromat Res Off, Houston, TX 77058 USA. [Russell, Christopher] Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90024 USA. RP Reddy, V (reprint author), Max Planck Inst Solar Syst Res, Max Planck Str 2, D-37191 Katlenburg Lindau, Germany. EM reddy@mps.mpg.de RI Blewett, David/I-4904-2012; Denevi, Brett/I-6502-2012; Russell, Christopher/E-7745-2012; Schroder, Stefan/D-9709-2013; McFadden, Lucy-Ann/I-4902-2013; Beck, Andrew/J-7215-2015; OI Blewett, David/0000-0002-9241-6358; Denevi, Brett/0000-0001-7837-6663; Russell, Christopher/0000-0003-1639-8298; Schroder, Stefan/0000-0003-0323-8324; McFadden, Lucy-Ann/0000-0002-0537-9975; Beck, Andrew/0000-0003-4455-2299; Reddy, Vishnu/0000-0002-7743-3491; Le Corre, Lucille/0000-0003-0349-7932 FU Max Planck Society; German Space Agency, DLR; Dawn at Vesta; NASA FX We thank the Dawn team for the development, cruise, orbital insertion, and operations of the Dawn spacecraft at Vesta. The Framing Camera project is financially supported by the Max Planck Society and the German Space Agency, DLR. We also thank the Dawn at Vesta Participating Scientist Program for funding the research. A portion of this work was performed at the Jet Propulsion Laboratory, California Institute of Technology, under contract with NASA. Dawn data are archived with the NASA Planetary Data System. NR 14 TC 115 Z9 115 U1 1 U2 13 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD MAY 11 PY 2012 VL 336 IS 6082 BP 700 EP 704 DI 10.1126/science.1219088 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 940EH UT WOS:000303872300044 PM 22582258 ER PT J AU Page, MJ Symeonidis, M Vieira, JD Altieri, B Amblard, A Arumugam, V Aussel, H Babbedge, T Blain, A Bock, J Boselli, A Buat, V Castro-Rodriguez, N Cava, A Chanial, P Clements, DL Conley, A Conversi, L Cooray, A Dowell, CD Dubois, EN Dunlop, JS Dwek, E Dye, S Eales, S Elbaz, D Farrah, D Fox, M Franceschini, A Gear, W Glenn, J Griffin, M Halpern, M Hatziminaoglou, E Ibar, E Isaak, K Ivison, RJ Lagache, G Levenson, L Lu, N Madden, S Maffei, B Mainetti, G Marchetti, L Nguyen, HT O'Halloran, B Oliver, SJ Omont, A Panuzzo, P Papageorgiou, A Pearson, CP Perez-Fournon, I Pohlen, M Rawlings, JI Rigopoulou, D Riguccini, L Rizzo, D Rodighiero, G Roseboom, IG Rowan-Robinson, M Portal, MS Schulz, B Scott, D Seymour, N Shupe, DL Smith, AJ Stevens, JA Trichas, M Tugwell, KE Vaccari, M Valtchanov, I Viero, M Vigroux, L Wang, L Ward, R Wright, G Xu, CK Zemcov, M AF Page, M. J. Symeonidis, M. Vieira, J. D. Altieri, B. Amblard, A. Arumugam, V. Aussel, H. Babbedge, T. Blain, A. Bock, J. Boselli, A. Buat, V. Castro-Rodriguez, N. Cava, A. Chanial, P. Clements, D. L. Conley, A. Conversi, L. Cooray, A. Dowell, C. D. Dubois, E. N. Dunlop, J. S. Dwek, E. Dye, S. Eales, S. Elbaz, D. Farrah, D. Fox, M. Franceschini, A. Gear, W. Glenn, J. Griffin, M. Halpern, M. Hatziminaoglou, E. Ibar, E. Isaak, K. Ivison, R. J. Lagache, G. Levenson, L. Lu, N. Madden, S. Maffei, B. Mainetti, G. Marchetti, L. Nguyen, H. T. O'Halloran, B. Oliver, S. J. Omont, A. Panuzzo, P. Papageorgiou, A. Pearson, C. P. Perez-Fournon, I. Pohlen, M. Rawlings, J. I. Rigopoulou, D. Riguccini, L. Rizzo, D. Rodighiero, G. Roseboom, I. G. Rowan-Robinson, M. Sanchez Portal, M. Schulz, B. Scott, D. Seymour, N. Shupe, D. L. Smith, A. J. Stevens, J. A. Trichas, M. Tugwell, K. E. Vaccari, M. Valtchanov, I. Viero, M. Vigroux, L. Wang, L. Ward, R. Wright, G. Xu, C. K. Zemcov, M. TI The suppression of star formation by powerful active galactic nuclei SO NATURE LA English DT Article ID BLACK-HOLES; GALAXY FORMATION; AGN; OUTFLOWS; FEEDBACK; CATALOGS; QUASARS; FIELDS; GROWTH; MODEL AB The old, red stars that constitute the bulges of galaxies, and the massive black holes at their centres, are the relics of a period in cosmic history when galaxies formed stars at remarkable rates and active galactic nuclei (AGN) shone brightly as a result of accretion onto black holes. It is widely suspected, but unproved, that the tight correlation between the mass of the black hole and the mass of the stellar bulge(1) results from the AGN quenching the surrounding star formation as it approaches its peak luminosity(2-4). X-rays trace emission from AGN unambiguously(5), whereas powerful star-forming galaxies are usually dust-obscured and are brightest at infrared and submillimetre wavelengths(6). Here we report submillimetre and X-ray observations that show that rapid star formation was common in the host galaxies of AGN when the Universe was 2-6 billion years old, but that the most vigorous star formation is not observed around black holes above an X-ray luminosity of 10(44) ergs per second. This suppression of star formation in the host galaxy of a powerful AGN is a key prediction of models in which the AGN drives an outflow(7-9), expelling the interstellar medium of its host and transforming the galaxy's properties in a brief period of cosmic time. C1 [Page, M. J.; Symeonidis, M.; Rawlings, J. I.; Seymour, N.; Tugwell, K. E.] Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England. [Altieri, B.; Conversi, L.; Sanchez Portal, M.; Valtchanov, I.] European Space Astron Ctr, Herschel Sci Ctr, Madrid 28691, Spain. [Amblard, A.] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA. [Arumugam, V.; Dunlop, J. S.; Ivison, R. J.; Roseboom, I. G.] Univ Edinburgh, Inst Astron, Royal Observ, Edinburgh EH9 3HJ, Midlothian, Scotland. [Aussel, H.; Chanial, P.; Elbaz, D.; Madden, S.; Panuzzo, P.; Riguccini, L.] Univ Paris Diderot, CE Saclay, CEA DSM IRFU, CNRS,Lab AIM Paris Saclay, F-91191 Gif Sur Yvette, France. [Babbedge, T.; Clements, D. L.; Fox, M.; O'Halloran, B.; Rizzo, D.; Rowan-Robinson, M.] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Astrophys Grp, London SW7 2AZ, England. [Blain, A.] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England. [Bock, J.; Dowell, C. D.; Levenson, L.; Nguyen, H. T.; Zemcov, M.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Boselli, A.; Buat, V.] Univ Aix Marseille, CNRS, OAMP, Lab Astrophys Marseille, F-13388 Marseille 13, France. [Castro-Rodriguez, N.; Perez-Fournon, I.] Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Tenerife, Spain. [Castro-Rodriguez, N.; Perez-Fournon, I.] Univ La Laguna, Dept Astrofis, E-38205 Tenerife, Spain. [Cava, A.] Univ Complutense Madrid, Fac CC Fis, Dept Astrofis, E-28040 Madrid, Spain. [Conley, A.; Glenn, J.] Univ Colorado, Ctr Astrophys & Space Astron UCB 389, Boulder, CO 80309 USA. [Cooray, A.] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. [Dubois, E. N.; Farrah, D.; Oliver, S. J.; Roseboom, I. G.; Smith, A. J.; Wang, L.; Ward, R.] Univ Sussex, Dept Phys & Astron, Ctr Astron, Brighton BN1 9QH, E Sussex, England. [Dwek, E.] NASA, Goddard Space Flight Ctr, Observat Cosmol Lab, Greenbelt, MD 20771 USA. [Dye, S.] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England. [Eales, S.; Gear, W.; Griffin, M.; Papageorgiou, A.; Pohlen, M.] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales. [Franceschini, A.; Mainetti, G.; Marchetti, L.; Rodighiero, G.; Vaccari, M.] Univ Padua, Dipartimento Astron, I-35122 Padua, Italy. [Glenn, J.] Univ Colorado, Dept Astrophys & Planetary Sci, CASA UCB 389, Boulder, CO 80309 USA. [Halpern, M.; Scott, D.] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada. [Hatziminaoglou, E.] ESO, D-85748 Garching, Germany. [Ibar, E.; Ivison, R. J.; Wright, G.] Royal Observ, UK Astron Technol Ctr, Edinburgh EH9 3HJ, Midlothian, Scotland. [Isaak, K.] European Space Res & Technol Ctr ESTEC, NL-2201 AZ Noordwijk, Netherlands. [Lagache, G.] Univ Paris 11, IAS, F-91405 Orsay, France. [Lagache, G.] CNRS, UMR 8617, F-91405 Orsay, France. [Lu, N.; Schulz, B.; Shupe, D. L.; Xu, C. K.] CALTECH, JPL, Ctr Infrared Proc & Anal, Pasadena, CA 91125 USA. [Maffei, B.] Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England. [Omont, A.; Vigroux, L.] Univ Paris 06, CNRS, UMR 7095, Inst Astrophys Paris, F-75014 Paris, France. [Pearson, C. P.; Rigopoulou, D.] Rutherford Appleton Lab, RAL Space, Didcot OX11 0QX, Oxon, England. [Pearson, C. P.] Univ Lethbridge, Inst Space Imaging Sci, Lethbridge, AB T1K 3M4, Canada. [Rigopoulou, D.] Univ Oxford, Dept Astrophys, Oxford OX1 3RH, England. [Seymour, N.] CSIRO Astron & Space Sci, Epping, NSW 1710, Australia. [Stevens, J. A.] Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England. [Trichas, M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Page, MJ (reprint author), Univ Coll London, Mullard Space Sci Lab, Holmbury St Mary, Dorking RH5 6NT, Surrey, England. EM mjp@mssl.ucl.ac.uk RI amblard, alexandre/L-7694-2014; Ivison, R./G-4450-2011; Vaccari, Mattia/R-3431-2016; Cava, Antonio/C-5274-2017; OI amblard, alexandre/0000-0002-2212-5395; Ivison, R./0000-0001-5118-1313; Vaccari, Mattia/0000-0002-6748-0577; Cava, Antonio/0000-0002-4821-1275; Scott, Douglas/0000-0002-6878-9840; Marchetti, Lucia/0000-0003-3948-7621; Seymour, Nicholas/0000-0003-3506-5536; Dye, Simon/0000-0002-1318-8343; Rodighiero, Giulia/0000-0002-9415-2296; Altieri, Bruno/0000-0003-3936-0284 FU CSA (Canada); NAOC (China); CEA (France); CNES (France); CNRS (France); ASI (Italy); MCINN(Spain); SNSB(Sweden); STFC (UK); UKSA (UK); NASA (USA) FX Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. SPIRE has been developed by a consortium of institutes led by Cardiff University (UK) and which includes: University of Lethbridge (Canada); NAOC (China); CEA, LAM (France); IFSI, University of Padua (Italy); IAC (Spain); Stockholm Observatory (Sweden); Imperial College London, RAL, UCL-MSSL, UKATC, University of Sussex (UK); and Caltech, JPL, NHSC, University of Colorado (USA). This development has been supported by national funding agencies: CSA (Canada); NAOC (China); CEA, CNES, CNRS (France); ASI (Italy); MCINN(Spain); SNSB(Sweden); STFC, UKSA (UK); and NASA (USA). NR 29 TC 90 Z9 90 U1 0 U2 7 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD MAY 10 PY 2012 VL 485 IS 7397 BP 213 EP 216 DI 10.1038/nature11096 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 939HJ UT WOS:000303799800035 PM 22575961 ER PT J AU Gezari, S Chornock, R Rest, A Huber, ME Forster, K Berger, E Challis, PJ Neill, JD Martin, DC Heckman, T Lawrence, A Norman, C Narayan, G Foley, RJ Marion, GH Scolnic, D Chomiuk, L Soderberg, A Smith, K Kirshner, RP Riess, AG Smartt, SJ Stubbs, CW Tonry, JL Wood-Vasey, WM Burgett, WS Chambers, KC Grav, T Heasley, JN Kaiser, N Kudritzki, RP Magnier, EA Morgan, JS Price, PA AF Gezari, S. Chornock, R. Rest, A. Huber, M. E. Forster, K. Berger, E. Challis, P. J. Neill, J. D. Martin, D. C. Heckman, T. Lawrence, A. Norman, C. Narayan, G. Foley, R. J. Marion, G. H. Scolnic, D. Chomiuk, L. Soderberg, A. Smith, K. Kirshner, R. P. Riess, A. G. Smartt, S. J. Stubbs, C. W. Tonry, J. L. Wood-Vasey, W. M. Burgett, W. S. Chambers, K. C. Grav, T. Heasley, J. N. Kaiser, N. Kudritzki, R. -P. Magnier, E. A. Morgan, J. S. Price, P. A. TI An ultraviolet-optical flare from the tidal disruption of a helium-rich stellar core SO NATURE LA English DT Article ID MASSIVE BLACK-HOLE; STAR; LUMINOSITY; EVOLUTION; OUTBURST; GALAXIES AB The flare of radiation from the tidal disruption and accretion of a star can be used as a marker for supermassive black holes that otherwise lie dormant and undetected in the centres of distant galaxies(1). Previous candidate flares(2-6) have had declining light curves in good agreement with expectations, but with poor constraints on the time of disruption and the type of star disrupted, because the rising emission was not observed. Recently, two 'relativistic' candidate tidal disruption events were discovered, each of whose extreme X-ray luminosity and synchrotron radio emission were interpreted as the onset of emission from a relativistic jet(7-10). Here we report a luminous ultraviolet-optical flare from the nuclear region of an inactive galaxy at a redshift of 0.1696. The observed continuum is cooler than expected for a simple accreting debris disk, but the well-sampled rise and decay of the light curve follow the predicted mass accretion rate and can be modelled to determine the time of disruption to an accuracy of two days. The black hole has a mass of about two million solar masses, modulo a factor dependent on the mass and radius of the star disrupted. On the basis of the spectroscopic signature of ionized helium from the unbound debris, we determine that the disrupted star was a helium-rich stellar core. C1 [Gezari, S.; Heckman, T.; Norman, C.; Scolnic, D.; Riess, A. G.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. [Chornock, R.; Berger, E.; Challis, P. J.; Narayan, G.; Foley, R. J.; Marion, G. H.; Chomiuk, L.; Soderberg, A.; Kirshner, R. P.; Stubbs, C. W.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Rest, A.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Huber, M. E.; Tonry, J. L.; Burgett, W. S.; Chambers, K. C.; Heasley, J. N.; Kaiser, N.; Kudritzki, R. -P.; Magnier, E. A.; Morgan, J. S.] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA. [Forster, K.; Neill, J. D.; Martin, D. C.] CALTECH, Pasadena, CA 91125 USA. [Lawrence, A.] Univ Edinburgh, Royal Observ, Scottish Univ Phys Alliance, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland. [Smith, K.; Smartt, S. J.] Queens Univ Belfast, Sch Math & Phys, Astrophys Res Ctr, Belfast BT7 1NN, Antrim, North Ireland. [Wood-Vasey, W. M.] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh Particle Phys Astrophys & Cosmol Ctr, Pittsburgh, PA 15260 USA. [Grav, T.] Planetary Sci Inst, Tucson, AZ 85719 USA. [Price, P. A.] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA. RP Gezari, S (reprint author), Johns Hopkins Univ, Dept Phys & Astron, 3400 N Charles St, Baltimore, MD 21218 USA. EM suvi@pha.jhu.edu RI Stubbs, Christopher/C-2829-2012; OI Stubbs, Christopher/0000-0003-0347-1724; Narayan, Gautham/0000-0001-6022-0484; Chambers, Kenneth /0000-0001-6965-7789 FU NASA; National Science Foundation; UK Science and Technology Facilities Council; Space Telescope Science Institute; Planetary Science Division of the NASA Science Mission Directorate FX We thank H. Tananbaum for approving our Chandra Director's Discretionary Time request. We are grateful to G. Lodato for providing the tidal disruption event models in tabular form, and to S. Moran for running software to calculate the host-galaxy K-corrections. We thank R. E. Williams for discussions on the line emission in the spectra. S. G. was supported by NASA through a Hubble Fellowship grant awarded by the Space Telescope Science Institute, which is operated by AURA Inc. for NASA. Partial support for this work was provided by the National Science Foundation. The PS1 survey has been made possible through contributions of the Institute for Astronomy, the University of Hawaii, the Pan-STARRS Project Office, the Max-Planck Society and its participating institutes, The Johns Hopkins University, Durham University, the University of Edinburgh, Queen's University Belfast, the Harvard-Smithsonian Center for Astrophysics, the Las Cumbres Observatory Global Telescope Network Inc. and the National Central University of Taiwan, and by NASA under a grant issued through the Planetary Science Division of the NASA Science Mission Directorate. We acknowledge NASA's support for construction, operation, and science analysis of the GALEX mission, which was developed in cooperation with Centre National d'Etudes Spatiales of France and the Korean Ministry of Science and Technology. Some of the observations reported here were obtained at the MMT Observatory, which is a joint facility of the Smithsonian Institution and the University of Arizona, and at the Liverpool Telescope, which is operated with financial support from the UK Science and Technology Facilities Council. The computations in this paper were run on the Odyssey cluster supported by the FAS Science Division Research Computing Group at Harvard University. R.J.F. is a Clay Fellow. NR 29 TC 130 Z9 130 U1 0 U2 7 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD MAY 10 PY 2012 VL 485 IS 7397 BP 217 EP 220 DI 10.1038/nature10990 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 939HJ UT WOS:000303799800036 PM 22575962 ER PT J AU Aliu, E Archambault, S Arlen, T Aune, T Beilicke, M Benbow, W Bottcher, M Bouvier, A Bradbury, SM Buckley, JH Bugaev, V Byrum, K Cannon, A Cesarini, A Ciupik, L Collins-Hughes, E Connolly, MP Coppi, P Cui, W Decerprit, G Dickherber, R Dumm, J Errando, M Falcone, A Feng, Q Finley, JP Finnegan, G Fortson, L Furniss, A Galante, N Gall, D Godambe, S Griffin, S Grube, J Gyuk, G Hanna, D Hawkins, K Holder, J Huan, H Hughes, G Humensky, TB Kaaret, P Karlsson, N Kertzman, M Khassen, Y Kieda, D Krawczynski, H Krennrich, F Lang, MJ Lee, K Madhavan, AS Maier, G Majumdar, P McArthur, S McCann, A Moriarty, P Mukherjee, R Ong, RA Orr, M Otte, AN Palma, N Park, N Perkins, JS Pichel, A Pohl, M Prokoph, H Quinn, J Ragan, K Reyes, LC Reynolds, PT Roache, E Rose, HJ Ruppel, J Saxon, DB Schroedter, M Sembroski, GH Senturk, GD Smith, AW Staszak, D Telezhinsky, I Tesic, G Theiling, M Thibadeau, S Tsurusaki, K Varlotta, A Vivier, M Wakely, SP Ward, JE Weekes, TC Weinstein, A Weisgarber, T Williams, DA Zitzer, B Fortin, P Horan, D AF Aliu, E. Archambault, S. Arlen, T. Aune, T. Beilicke, M. Benbow, W. Boettcher, M. Bouvier, A. Bradbury, S. M. Buckley, J. H. Bugaev, V. Byrum, K. Cannon, A. Cesarini, A. Ciupik, L. Collins-Hughes, E. Connolly, M. P. Coppi, P. Cui, W. Decerprit, G. Dickherber, R. Dumm, J. Errando, M. Falcone, A. Feng, Q. Finley, J. P. Finnegan, G. Fortson, L. Furniss, A. Galante, N. Gall, D. Godambe, S. Griffin, S. Grube, J. Gyuk, G. Hanna, D. Hawkins, K. Holder, J. Huan, H. Hughes, G. Humensky, T. B. Kaaret, P. Karlsson, N. Kertzman, M. Khassen, Y. Kieda, D. Krawczynski, H. Krennrich, F. Lang, M. J. Lee, K. Madhavan, A. S. Maier, G. Majumdar, P. McArthur, S. McCann, A. Moriarty, P. Mukherjee, R. Ong, R. A. Orr, M. Otte, A. N. Palma, N. Park, N. Perkins, J. S. Pichel, A. Pohl, M. Prokoph, H. Quinn, J. Ragan, K. Reyes, L. C. Reynolds, P. T. Roache, E. Rose, H. J. Ruppel, J. Saxon, D. B. Schroedter, M. Sembroski, G. H. Sentuerk, G. D. Smith, A. W. Staszak, D. Telezhinsky, I. Tesic, G. Theiling, M. Thibadeau, S. Tsurusaki, K. Varlotta, A. Vivier, M. Wakely, S. P. Ward, J. E. Weekes, T. C. Weinstein, A. Weisgarber, T. Williams, D. A. Zitzer, B. Fortin, P. Horan, D. TI DISCOVERY OF HIGH-ENERGY AND VERY HIGH ENERGY gamma-RAY EMISSION FROM THE BLAZAR RBS 0413 SO ASTROPHYSICAL JOURNAL LA English DT Article DE BL Lacertae objects: individual (RBS 0413-VER J0319+187); gamma rays: galaxies ID BL-LACERTAE OBJECTS; SWIFT ULTRAVIOLET/OPTICAL TELESCOPE; ACTIVE GALACTIC NUCLEI; LARGE-AREA TELESCOPE; LAC OBJECTS; BRIGHT BLAZARS; RADIATION; MODEL; CATALOG; MISSION AB We report on the discovery of high-energy (HE; E > 0.1 GeV) and very high energy (VHE; E > 100 GeV) gamma-ray emission from the high-frequency-peaked BL Lac object RBS 0413. VERITAS, a ground-based gamma-ray observatory, detected VHE. rays from RBS 0413 with a statistical significance of 5.5 standard deviations (sigma) and a gamma-ray flux of (1.5 +/- 0.6(stat) +/- 0.7(syst)) x 10(-8) photons m(-2) s(-1) (similar to 1% of the Crab Nebula flux) above 250 GeV. The observed spectrum can be described by a power law with a photon index of 3.18 +/- 0.68(stat) +/- 0.30(syst). Contemporaneous observations with the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope detected HE gamma rays from RBS 0413 with a (stat)istical significance of more than 9 sigma, a power-law photon index of 1.57 +/- 0.12(stat-0.12sys')(+0.11) and a gamma-ray flux between 300 MeV and 300 GeV of (1.64 +/- 0.43(stat-0.22sys)(+ 0.31)) x 10(-5) photons m(-2) s(-1). We present the results from Fermi-LAT and VERITAS, including a spectral energy distribution modeling of the gamma-ray, quasi-simultaneous X-ray (Swift-XRT), ultraviolet (Swift-UVOT), and R-band optical (MDM) data. We find that, if conditions close to equipartition are required, both the combined synchrotron self-Compton/external-Compton and the lepto-hadronic models are preferred over a pure synchrotron self-Compton model. C1 [Aliu, E.; Errando, M.; Mukherjee, R.] Columbia Univ, Dept Phys & Astron, Barnard Coll, New York, NY 10027 USA. [Archambault, S.; Griffin, S.; Hanna, D.; McCann, A.; Ragan, K.; Staszak, D.; Tesic, G.] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada. [Arlen, T.; Majumdar, P.; Ong, R. A.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. [Aune, T.; Bouvier, A.; Furniss, A.; Otte, A. N.; Williams, D. A.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA. [Aune, T.; Bouvier, A.; Furniss, A.; Otte, A. N.; Williams, D. A.] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA. [Beilicke, M.; Buckley, J. H.; Bugaev, V.; Dickherber, R.; Krawczynski, H.; Lee, K.; McArthur, S.; Thibadeau, S.] Washington Univ, Dept Phys, St Louis, MO 63130 USA. [Benbow, W.; Galante, N.; Roache, E.; Schroedter, M.; Weekes, T. C.] Harvard Smithsonian Ctr Astrophys, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA. [Boettcher, M.; Hawkins, K.; Palma, N.] Ohio Univ, Dept Phys & Astron, Inst Astrophys, Athens, OH 45701 USA. [Bradbury, S. M.; Rose, H. J.] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England. [Byrum, K.; Decerprit, G.] Argonne Natl Lab, Argonne, IL 60439 USA. [Cannon, A.; Collins-Hughes, E.; Khassen, Y.; Quinn, J.; Ward, J. E.] Univ Coll Dublin, Sch Phys, Dublin 4, Ireland. [Cesarini, A.; Connolly, M. P.; Lang, M. J.] Natl Univ Ireland Galway, Sch Phys, Galway, Ireland. [Ciupik, L.; Grube, J.; Gyuk, G.] Adler Planetarium & Astron Museum, Dept Astron, Chicago, IL 60605 USA. [Coppi, P.] Yale Univ, Dept Astron, New Haven, CT 06511 USA. [Cui, W.; Feng, Q.; Finley, J. P.; Sembroski, G. H.; Theiling, M.; Varlotta, A.; Zitzer, B.] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA. [Dumm, J.; Fortson, L.; Karlsson, N.] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA. [Falcone, A.] Penn State Univ, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA 16802 USA. [Finnegan, G.; Godambe, S.; Kieda, D.; Smith, A. W.] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA. [Gall, D.; Kaaret, P.; Tsurusaki, K.] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA. [Holder, J.; Saxon, D. B.; Vivier, M.] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA. [Holder, J.; Saxon, D. B.; Vivier, M.] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA. [Huan, H.; Park, N.; Wakely, S. P.; Weisgarber, T.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. [Hughes, G.; Maier, G.; Pohl, M.; Prokoph, H.; Ruppel, J.; Telezhinsky, I.] DESY, D-15738 Zeuthen, Germany. [Humensky, T. B.; Sentuerk, G. D.] Columbia Univ, Dept Phys, New York, NY 10027 USA. [Kertzman, M.] Depauw Univ, Dept Phys & Astron, Greencastle, IN 46135 USA. [Krennrich, F.; Madhavan, A. S.; Orr, M.; Weinstein, A.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. [Moriarty, P.] Galway Mayo Inst Technol, Dept Life & Phys Sci, Galway, Ireland. [Perkins, J. S.] NASA, CRESST, GSFC, Greenbelt, MD 20771 USA. [Perkins, J. S.] NASA, Astroparticle Phys Lab, GSFC, Greenbelt, MD 20771 USA. [Perkins, J. S.] Univ Maryland Baltimore Cty, Baltimore, MD 21250 USA. [Pichel, A.] Inst Astron & Fis Espacio, RA-1428 Buenos Aires, DF, Argentina. [Pohl, M.; Ruppel, J.; Telezhinsky, I.] Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany. [Reyes, L. C.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 94307 USA. [Reynolds, P. T.] Cork Inst Technol, Dept Appl Phys & Instrumentat, Cork, Ireland. [Fortin, P.; Horan, D.] Ecole Polytech, CNRS, Lab Leprince Ringuet, IN2P3, F-91128 Palaiseau, France. RP Aliu, E (reprint author), Columbia Univ, Dept Phys & Astron, Barnard Coll, New York, NY 10027 USA. EM gunessenturk@gmail.com; fortin@llr.in2p3.fr; deirdre@llr.in2p3.fr RI Khassen, Yerbol/I-3806-2015; OI Khassen, Yerbol/0000-0002-7296-3100; Cui, Wei/0000-0002-6324-5772; Cesarini, Andrea/0000-0002-8611-8610; Ward, John E/0000-0003-1973-0794 FU US Department of Energy Office of Science; US National Science Foundation; Smithsonian Institution; NASA; NSERC in Canada; Science Foundation Ireland [SFI 10/RFP/AST2748]; STFC in the UK FX The VERITAS research is supported by grants from the US Department of Energy Office of Science, the US National Science Foundation, the Smithsonian Institution, and the NASA Swift Guest Investigator Program, by NSERC in Canada, by Science Foundation Ireland (SFI 10/RFP/AST2748), and by STFC in the UK. We acknowledge the excellent work of the technical support staff at the FLWO and at the collaborating institutions in the construction and operation of the instrument. NR 40 TC 27 Z9 28 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY 10 PY 2012 VL 750 IS 2 AR 94 DI 10.1088/0004-637X/750/2/94 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 934LT UT WOS:000303446500008 ER PT J AU Allen, TS Gutermuth, RA Kryukova, E Megeath, ST Pipher, JL Naylor, T Jeffries, RD Wolk, SJ Spitzbart, B Muzerolle, J AF Allen, Thomas S. Gutermuth, Robert A. Kryukova, Erin Megeath, S. Thomas Pipher, Judith L. Naylor, Tim Jeffries, R. D. Wolk, Scott J. Spitzbart, Brad Muzerolle, James TI SPITZER IMAGING OF THE NEARBY RICH YOUNG CLUSTER, Cep OB3b SO ASTROPHYSICAL JOURNAL LA English DT Article DE infrared: stars; stars: formation; stars: pre-main sequence ID ORION-NEBULA-CLUSTER; INFRARED ARRAY CAMERA; STAR-FORMING REGIONS; SPACE-TELESCOPE; PROTOPLANETARY DISKS; CEPHEUS-B; ABSOLUTE CALIBRATION; STELLAR CLUSTERS; MOLECULAR CLOUDS; MASS STARS AB We map the full extent of a rich massive young cluster in the Cep OB3b association with the Infrared Array Camera and Multi-band Imaging Photometer System instruments aboard the Spitzer Space Telescope and the ACIS instrument aboard the Chandra X-Ray Observatory. At 700 pc, it is revealed to be the second nearest large (>1000 member), young (<5Myr) cluster known. In contrast to the nearest large cluster, the Orion Nebula Cluster, Cep OB3b is only lightly obscured and is mostly located in a large cavity carved out of the surrounding molecular cloud. Our infrared and X-ray data sets, as well as visible photometry from the literature, are used to take a census of the young stars in Cep OB3b. We find that the young stars within the cluster are concentrated in two sub-clusters; an eastern sub-cluster, near the Cep B molecular clump, and a western sub-cluster, near the Cep F molecular clump. Using our census of young stars, we examine the fraction of young stars with infrared excesses indicative of circumstellar disks. We create a map of the disk fraction throughout the cluster and find that it is spatially variable. Due to these spatial variations, the two sub-clusters exhibit substantially different average disk fractions from each other: 32%+/- 4% and 50%+/- 6%. We discuss whether the discrepant disk fractions are due to the photodestruction of disks by the high mass members of the cluster or whether they result from differences in the ages of the sub-clusters. We conclude that the discrepant disk fractions are most likely due to differences in the ages. C1 [Allen, Thomas S.; Kryukova, Erin; Megeath, S. Thomas] Univ Toledo, Dept Phys & Astron, Toledo, OH 43606 USA. [Gutermuth, Robert A.] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA. [Pipher, Judith L.] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA. [Naylor, Tim] Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England. [Jeffries, R. D.] Univ Keele, Sch Phys & Geog Sci, Astrophys Grp, Keele ST5 5BG, Staffs, England. [Wolk, Scott J.; Spitzbart, Brad] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Muzerolle, James] Space Telescope Sci Inst, Baltimore, MD 21218 USA. RP Allen, TS (reprint author), Univ Toledo, Dept Phys & Astron, Toledo, OH 43606 USA. RI Naylor, Tim /A-9465-2015; OI Wolk, Scott/0000-0002-0826-9261 FU National Aeronautics and Space Administration (NASA) [1407, GO9-0017A, NAS8-03060, 1276271]; NASA through JPL/Caltech; National Science Foundation [AST-1009564]; University of Massachusetts; JPL [SAO/JPL SV4-74011] FX This work is based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under NASA contract 1407. Support for this work was provided by NASA through an award issued by JPL/Caltech. Support for this work was provided by the National Aeronautics and Space Administration through the Chandra Award Number GO9-0017A issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics Space Administration under contract NAS8-03060. S.T.M. and E.K. acknowledge support by NASA award 1281302. J.L.P. acknowledges support from the NASA award 1276271. S.J.W. and B.D.S. were supported by NASA contract NAS8-03060 to the Chandra Science Center. Additional support for this work was provided by the National Science Foundation award AST-1009564. This research has made use of the NASA/IPAC Infrared Science Archive, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis, Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation and JPL support from SAO/JPL SV4-74011. NR 62 TC 17 Z9 17 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY 10 PY 2012 VL 750 IS 2 AR 125 DI 10.1088/0004-637X/750/2/125 PG 19 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 934LT UT WOS:000303446500039 ER PT J AU Chomiuk, L Soderberg, AM Moe, M Chevalier, RA Rupen, MP Badenes, C Margutti, R Fransson, C Fong, WF Dittmann, JA AF Chomiuk, Laura Soderberg, Alicia M. Moe, Maxwell Chevalier, Roger A. Rupen, Michael P. Badenes, Carles Margutti, Raffaella Fransson, Claes Fong, Wen-fai Dittmann, Jason A. TI EVLA OBSERVATIONS CONSTRAIN THE ENVIRONMENT AND PROGENITOR SYSTEM OF Type Ia SUPERNOVA 2011fe SO ASTROPHYSICAL JOURNAL LA English DT Article DE binaries: general; circumstellar matter; novae, cataclysmic variables; supernovae: general; supernovae: individual (SN 2011fe) ID CORE-COLLAPSE SUPERNOVAE; GAMMA-RAY BURSTS; SN 2011FE; CIRCUMSTELLAR MATERIAL; RADIO-EMISSION; WHITE-DWARFS; U-SCORPII; SODIUM-ABSORPTION; SYMBIOTIC CHANNEL; REMNANT G1.9+0.3 AB We report unique Expanded Very Large Array observations of SN 2011fe representing the most sensitive radio study of a Type Ia supernova to date. Our data place direct constraints on the density of the surrounding medium at radii similar to 10(15)-10(16) cm, implying an upper limit on the mass loss rate from the progenitor system of (M) over dot less than or similar to 6x10(-10) M-circle dot yr(-1) (assuming a wind speed of 100 km s(-1)) or expansion into a uniform medium with density n(CSM) less than or similar to 6 cm(-3). Drawing from the observed properties of non-conservative mass transfer among accreting white dwarfs, we use these limits on the density of the immediate environs to exclude a phase space of possible progenitor systems for SN 2011fe. We rule out a symbiotic progenitor system and also a system characterized by high accretion rate onto the white dwarf that is expected to give rise to optically thick accretion winds. Assuming that a small fraction, 1%, of the mass accreted is lost from the progenitor system, we also eliminate much of the potential progenitor parameter space for white dwarfs hosting recurrent novae or undergoing stable nuclear burning. Therefore, we rule out much of the parameter space associated with popular single degenerate progenitor models for SN 2011fe, leaving a limited phase space largely inhabited by some double degenerate systems, as well as exotic single degenerates with a sufficient time delay between mass accretion and SN explosion. C1 [Chomiuk, Laura; Soderberg, Alicia M.; Moe, Maxwell; Margutti, Raffaella; Fong, Wen-fai; Dittmann, Jason A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Chomiuk, Laura; Rupen, Michael P.] Natl Radio Astron Observ, Socorro, NM 87801 USA. [Chevalier, Roger A.] Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA. [Badenes, Carles] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA. [Badenes, Carles] Univ Pittsburgh, Pittsburgh Particle Phys Astrophys & Cosmol Ctr P, Pittsburgh, PA 15260 USA. [Fransson, Claes] Stockholm Univ, Dept Astron, SE-10691 Stockholm, Sweden. RP Chomiuk, L (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM lchomiuk@cfa.harvard.edu OI Badenes, Carles/0000-0003-3494-343X FU National Aeronautics and Space Administration; NSF [AST-0807727] FX We are grateful to Sumner Starrfield and an anonymous referee for their insights. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by the Associated Universities, Inc. L.C. is a Jansky Fellow of the National Radio Astronomy Observatory. This work made use of THINGS, "The HI Nearby Galaxy Survey" (Walter et al. 2008). This research has also made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. R.A.C. acknowledges support from the NSF under the grant AST-0807727. NR 99 TC 90 Z9 90 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY 10 PY 2012 VL 750 IS 2 AR 164 DI 10.1088/0004-637X/750/2/164 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 934LT UT WOS:000303446500078 ER PT J AU Fabrycky, DC Ford, EB Steffen, JH Rowe, JF Carter, JA Moorhead, AV Batalha, NM Borucki, WJ Bryson, S Buchhave, LA Christiansen, JL Ciardi, DR Cochran, WD Endl, M Fanelli, MN Fischer, D Fressin, F Geary, J Haas, MR Hall, JR Holman, MJ Jenkins, JM Koch, DG Latham, DW Li, J Lissauer, JJ Lucas, P Marcy, GW Mazeh, T McCauliff, S Quinn, S Ragozzine, D Sasselov, D Shporer, A AF Fabrycky, Daniel C. Ford, Eric B. Steffen, Jason H. Rowe, Jason F. Carter, Joshua A. Moorhead, Althea V. Batalha, Natalie M. Borucki, William J. Bryson, Steve Buchhave, Lars A. Christiansen, Jessie L. Ciardi, David R. Cochran, William D. Endl, Michael Fanelli, Michael N. Fischer, Debra Fressin, Francois Geary, John Haas, Michael R. Hall, Jennifer R. Holman, Matthew J. Jenkins, Jon M. Koch, David G. Latham, David W. Li, Jie Lissauer, Jack J. Lucas, Philip Marcy, Geoffrey W. Mazeh, Tsevi McCauliff, Sean Quinn, Samuel Ragozzine, Darin Sasselov, Dimitar Shporer, Avi TI TRANSIT TIMING OBSERVATIONS FROM KEPLER. IV. CONFIRMATION OF FOUR MULTIPLE-PLANET SYSTEMS BY SIMPLE PHYSICAL MODELS SO ASTROPHYSICAL JOURNAL LA English DT Article DE methods: statistical; planetary systems; planets and satellites: detection; planets and satellites: dynamical evolution and stability; stars: individual (KID 10358759/KOI-738/Kepler-29, KID 3832474/KOI-806/Kepler-30, KID 9347899/KOI-935/Kepler-31, KID 9787239/KOI-952/Kepler-32) ID SOLAR-TYPE STARS; MEAN-MOTION RESONANCES; SPIN-ORBIT ALIGNMENT; SUPER-EARTHS; SOPHIE VELOCIMETRY; MASS PLANETS; HOT-JUPITER; EXTRASOLAR PLANETS; 3-BODY PROBLEM; HARPS SEARCH AB Eighty planetary systems of two or more planets are known to orbit stars other than the Sun. For most, the data can be sufficiently explained by non-interacting Keplerian orbits, so the dynamical interactions of these systems have not been observed. Here we present four sets of light curves from the Kepler spacecraft, each which of shows multiple planets transiting the same star. Departure of the timing of these transits from strict periodicity indicates that the planets are perturbing each other: the observed timing variations match the forcing frequency of the other planet. This confirms that these objects are in the same system. Next we limit their masses to the planetary regime by requiring the system remain stable for astronomical timescales. Finally, we report dynamical fits to the transit times, yielding possible values for the planets' masses and eccentricities. As the timespan of timing data increases, dynamical fits may allow detailed constraints on the systems' architectures, even in cases for which high-precision Doppler follow-up is impractical. C1 [Fabrycky, Daniel C.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA. [Ford, Eric B.; Moorhead, Althea V.] Univ Florida, Dept Astron, Bryant Space Sci Ctr 211, Gainesville, FL 32111 USA. [Steffen, Jason H.] Fermilab Ctr Particle Astrophys, Batavia, IL 60510 USA. [Rowe, Jason F.; Christiansen, Jessie L.; Jenkins, Jon M.] SETI Inst, Mountain View, CA 94043 USA. [Fanelli, Michael N.] NASA, Ames Res Ctr, Bay Area Environm Res Inst, Moffett Field, CA 94035 USA. [Carter, Joshua A.; Fressin, Francois; Geary, John; Holman, Matthew J.; Latham, David W.; Quinn, Samuel; Ragozzine, Darin; Sasselov, Dimitar] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Batalha, Natalie M.] San Jose State Univ, Dept Phys & Astron, San Jose, CA 95192 USA. [Buchhave, Lars A.] Univ Copenhagen, Niels Bohr Inst, Dept Astrophys & Planetary Sci, DK-1350 Copenhagen, Denmark. [Buchhave, Lars A.] Univ Copenhagen, Nat Hist Museum Denmark, Ctr Star & Planet Format, DK-1350 Copenhagen, Denmark. [Ciardi, David R.] Caltech, NASA Exoplanet Sci Inst, Pasadena, CA 91126 USA. [Cochran, William D.; Endl, Michael] Univ Texas Austin, McDonald Observ, Austin, TX 78730 USA. [Fischer, Debra] Yale Univ, Dept Astron, New Haven, CT 06511 USA. [Fischer, Debra] San Francisco State Univ, Dept Phys & Astron, San Francisco, CA 94132 USA. [Hall, Jennifer R.] NASA, Ames Res Ctr, Orbital Sci Corp, Moffett Field, CA 94035 USA. [Lucas, Philip] Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England. [Marcy, Geoffrey W.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Mazeh, Tsevi] Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, Sch Phys & Astron, IL-69978 Tel Aviv, Israel. [Shporer, Avi] Las Cumbres Observ Global Telescope Network, Santa Barbara, CA 93117 USA. [Shporer, Avi] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. RP Fabrycky, DC (reprint author), Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA. EM daniel.fabrycky@gmail.com RI Carter, Joshua/A-8280-2013; Ragozzine, Darin/C-4926-2013; OI Buchhave, Lars A./0000-0003-1605-5666; Ciardi, David/0000-0002-5741-3047; /0000-0001-6545-639X; Fischer, Debra/0000-0003-2221-0861; Fabrycky, Daniel/0000-0003-3750-0183 FU NASA's Science Mission Directorate; National Aeronautics and Space Administration (NASA) [HF-51272.01-A, HF-51267.01-A, NAS 5-26555, NNX08AR04G]; Space Telescope Science Institute; National Science Foundation [0707203] FX Funding for this mission is provided by NASA's Science Mission Directorate. We thank the entire Kepler team for the many years of work that is proving so successful. We thank E. Agol for comments and G. Sokol for assistance analyzing starspot variations. D.C.F. and J.A.C. acknowledge support for this work was provided by NASA through Hubble Fellowship grants HF-51272.01-A and HF-51267.01-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS 5-26555. E.B.F acknowledges support by the National Aeronautics and Space Administration under grant NNX08AR04G issued through the Kepler Participating Scientist Program. This material is based upon work supported by the National Science Foundation under grant No. 0707203. This paper uses observations obtained with facilities of the LasCumbres Observatory Global Telescope. NR 83 TC 107 Z9 107 U1 0 U2 11 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY 10 PY 2012 VL 750 IS 2 AR 114 DI 10.1088/0004-637X/750/2/114 PG 17 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 934LT UT WOS:000303446500028 ER PT J AU Ford, EB Fabrycky, DC Steffen, JH Carter, JA Fressin, F Holman, MJ Lissauer, JJ Moorhead, AV Morehead, RC Ragozzine, D Rowe, JF Welsh, WF Allen, C Batalha, NM Borucki, WJ Bryson, ST Buchhave, LA Burke, CJ Caldwell, DA Charbonneau, D Clarke, BD Cochran, WD Desert, JM Endl, M Everett, ME Fischer, DA Gautier, TN Gilliland, RL Jenkins, JM Haas, MR Horch, E Howell, SB Ibrahim, KA Isaacson, H Koch, DG Latham, DW Li, J Lucas, P MacQueen, PJ Marcy, GW McCauliff, S Mullally, FR Quinn, SN Quintana, E Shporer, A Still, M Tenenbaum, P Thompson, SE Torres, G Twicken, JD Wohler, B AF Ford, Eric B. Fabrycky, Daniel C. Steffen, Jason H. Carter, Joshua A. Fressin, Francois Holman, Matthew J. Lissauer, Jack J. Moorhead, Althea V. Morehead, Robert C. Ragozzine, Darin Rowe, Jason F. Welsh, William F. Allen, Christopher Batalha, Natalie M. Borucki, William J. Bryson, Stephen T. Buchhave, Lars A. Burke, Christopher J. Caldwell, Douglas A. Charbonneau, David Clarke, Bruce D. Cochran, William D. Desert, Jean-Michel Endl, Michael Everett, Mark E. Fischer, Debra A. Gautier, Thomas N., III Gilliland, Ron L. Jenkins, Jon M. Haas, Michael R. Horch, Elliott Howell, Steve B. Ibrahim, Khadeejah A. Isaacson, Howard Koch, David G. Latham, David W. Li, Jie Lucas, Philip MacQueen, Phillip J. Marcy, Geoffrey W. McCauliff, Sean Mullally, Fergal R. Quinn, Samuel N. Quintana, Elisa Shporer, Avi Still, Martin Tenenbaum, Peter Thompson, Susan E. Torres, Guillermo Twicken, Joseph D. Wohler, Bill CA Kepler Sci Team TI TRANSIT TIMING OBSERVATIONS FROM KEPLER. II. CONFIRMATION OF TWO MULTIPLANET SYSTEMS VIA A NON-PARAMETRIC CORRELATION ANALYSIS SO ASTROPHYSICAL JOURNAL LA English DT Article DE planetary systems; planets and satellites: detection; planets and satellites: dynamical evolution and stability; stars: individual (KIC 3231341, 11512246, KOI 168, 1102, Kepler-23, Kepler-24); techniques: miscellaneous ID SOLAR-TYPE STARS; 1ST 4 MONTHS; PLANET CANDIDATES; EXTRASOLAR PLANETS; PROTOSTELLAR DISC; Y-2 ISOCHRONES; FOLLOW-UP; STELLAR; MULTIPLICITY; VALIDATION AB We present a new method for confirming transiting planets based on the combination of transit timing variations (TTVs) and dynamical stability. Correlated TTVs provide evidence that the pair of bodies is in the same physical system. Orbital stability provides upper limits for the masses of the transiting companions that are in the planetary regime. This paper describes a non-parametric technique for quantifying the statistical significance of TTVs based on the correlation of two TTV data sets. We apply this method to an analysis of the TTVs of two stars with multiple transiting planet candidates identified by Kepler. We confirm four transiting planets in two multiple-planet systems based on their TTVs and the constraints imposed by dynamical stability. An additional three candidates in these same systems are not confirmed as planets, but are likely to be validated as real planets once further observations and analyses are possible. If all were confirmed, these systems would be near 4:6:9 and 2:4:6:9 period commensurabilities. Our results demonstrate that TTVs provide a powerful tool for confirming transiting planets, including low-mass planets and planets around faint stars for which Doppler follow-up is not practical with existing facilities. Continued Kepler observations will dramatically improve the constraints on the planet masses and orbits and provide sensitivity for detecting additional non-transiting planets. If Kepler observations were extended to eight years, then a similar analysis could likely confirm systems with multiple closely spaced, small transiting planets in or near the habitable zone of solar-type stars. C1 [Ford, Eric B.; Moorhead, Althea V.; Morehead, Robert C.] Univ Florida, Dept Astron, Bryant Space Sci Ctr 211, Gainesville, FL 32611 USA. [Fabrycky, Daniel C.] Univ Calif Santa Cruz, UCO Lick Observ, Santa Cruz, CA 95064 USA. [Steffen, Jason H.] Fermilab Ctr Particle Astrophys, Batavia, IL 60510 USA. [Carter, Joshua A.; Fressin, Francois; Holman, Matthew J.; Ragozzine, Darin; Charbonneau, David; Desert, Jean-Michel; Quinn, Samuel N.; Torres, Guillermo] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Allen, Christopher; Ibrahim, Khadeejah A.; McCauliff, Sean; Wohler, Bill] NASA, Ames Res Ctr, Orbital Sci Corp, Moffett Field, CA 94035 USA. [Rowe, Jason F.; Burke, Christopher J.; Caldwell, Douglas A.; Clarke, Bruce D.; Jenkins, Jon M.; Li, Jie; Mullally, Fergal R.; Quintana, Elisa; Tenenbaum, Peter; Thompson, Susan E.; Twicken, Joseph D.] SETI Inst, Mountain View, CA 94043 USA. [Welsh, William F.] San Diego State Univ, Dept Astron, San Diego, CA 92182 USA. [Batalha, Natalie M.] San Jose State Univ, Dept Phys & Astron, San Jose, CA 95192 USA. [Buchhave, Lars A.] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark. [Buchhave, Lars A.] Univ Copenhagen, Nat Hist Museum Denmark, Ctr Star & Planet Format, DK-1350 Copenhagen, Denmark. [Cochran, William D.; Endl, Michael; MacQueen, Phillip J.] Univ Texas Austin, McDonald Observ, Austin, TX 78730 USA. [Everett, Mark E.] Natl Opt Astron Observ, Tucson, AZ 85719 USA. [Fischer, Debra A.] Yale Univ, Dept Astron, New Haven, CT 06511 USA. [Gautier, Thomas N., III] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Gilliland, Ron L.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Horch, Elliott] So Connecticut State Univ, Dept Phys, New Haven, CT 06515 USA. [Isaacson, Howard; Marcy, Geoffrey W.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Lucas, Philip] Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England. [Shporer, Avi] Las Cumbres Observ Global Telescope, Goleta, CA 93117 USA. [Shporer, Avi] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. [Still, Martin] NASA, Ames Res Ctr, Bay Area Environm Res Inst, Moffett Field, CA 94035 USA. RP Ford, EB (reprint author), Univ Florida, Dept Astron, Bryant Space Sci Ctr 211, Gainesville, FL 32611 USA. EM eford@astro.ufl.edu RI Kepler, S. O. /H-5901-2012; Carter, Joshua/A-8280-2013; Ragozzine, Darin/C-4926-2013; Caldwell, Douglas/L-7911-2014; OI Kepler, S. O. /0000-0002-7470-5703; Fischer, Debra/0000-0003-2221-0861; Fabrycky, Daniel/0000-0003-3750-0183; Caldwell, Douglas/0000-0003-1963-9616; Buchhave, Lars A./0000-0003-1605-5666; /0000-0001-6545-639X FU NASA's Science Mission Directorate; National Aeronautics and Space Administration (NASA) [NNX08AR04G, HF-51272.01-A, HF-51267.01-A, NAS 5-26555]; National Science Foundation [0707203]; Space Telescope Science Institute FX Funding for this mission is provided by NASA's Science Mission Directorate. We thank the entire Kepler team for the many years of work that is proving so successful. E.B.F. acknowledges support by the National Aeronautics and Space Administration under grant NNX08AR04G issued through the Kepler Participating Scientist Program. This material is based upon work supported by the National Science Foundation under grant 0707203. D.C.F. and J.A.C. acknowledge support for this work provided by NASA through Hubble Fellowship grants HF-51272.01-A and HF-51267.01-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS 5-26555. Results are based in part on observations obtained at the W.M. Keck Observatory, which is operated by the University of California and the California Institute of Technology, and at the National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy (AURA) under cooperative agreement with the National Science Foundation. NR 42 TC 51 Z9 51 U1 0 U2 9 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY 10 PY 2012 VL 750 IS 2 AR 113 DI 10.1088/0004-637X/750/2/113 PG 18 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 934LT UT WOS:000303446500027 ER PT J AU Kipping, DM Bakos, GA Buchhave, L Nesvorny, D Schmitt, A AF Kipping, D. M. Bakos, G. A. Buchhave, L. Nesvorny, D. Schmitt, A. TI THE HUNT FOR EXOMOONS WITH KEPLER (HEK). I. DESCRIPTION OF A NEW OBSERVATIONAL PROJECT SO ASTROPHYSICAL JOURNAL LA English DT Article DE methods: data analysis; occultations; planetary systems; planets and satellites: general; techniques: photometric ID EXTRASOLAR GIANT PLANETS; TRANSIT LIGHT-CURVE; TERRESTRIAL PLANETS; MODEL SELECTION; BLEND SCENARIOS; PHOTOMETRY; SYSTEM; SATELLITES; CANDIDATES; MOON AB Two decades ago, empirical evidence concerning the existence and frequency of planets around stars, other than our own, was absent. Since that time, the detection of extrasolar planets from Jupiter-sized to, most recently, Earth-sized worlds has blossomed and we are finally able to shed light on the plurality of Earth-like, habitable planets in the cosmos. Extrasolar moons may also be frequently habitable worlds, but their detection or even systematic pursuit remains lacking in the current literature. Here, we present a description of the first systematic search for extrasolar moons as part of a new observational project called "The Hunt for Exomoons with Kepler" (HEK). The HEK project distills the entire list of known transiting planet candidates found by Kepler (2326 at the time of writing) down to the most promising candidates for hosting a moon. Selected targets are fitted using a multimodal nested sampling algorithm coupled with a planet-with-moon light curve modeling routine. By comparing the Bayesian evidence of a planet-only model to that of a planet-with-moon, the detection process is handled in a Bayesian framework. In the case of null detections, upper limits derived from posteriors marginalized over the entire prior volume will be provided to inform the frequency of large moons around viable planetary hosts, eta((sic)). After discussing our methodologies for target selection, modeling, fitting, and vetting, we provide two example analyses. C1 [Kipping, D. M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Bakos, G. A.] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA. [Buchhave, L.] Univ Copenhagen, Niels Bohr Inst, DK-1168 Copenhagen, Denmark. [Nesvorny, D.] SW Res Inst, Dept Space Studies, Boulder, CO 80302 USA. RP Kipping, DM (reprint author), Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. EM dkipping@cfa.harvard.edu OI Buchhave, Lars A./0000-0003-1605-5666 NR 83 TC 63 Z9 63 U1 0 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY 10 PY 2012 VL 750 IS 2 AR 115 DI 10.1088/0004-637X/750/2/115 PG 19 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 934LT UT WOS:000303446500029 ER PT J AU Kurtz, MJ Geller, MJ Utsumi, Y Miyazaki, S Dell'Antonio, IP Fabricant, DG AF Kurtz, Michael J. Geller, Margaret J. Utsumi, Yousuke Miyazaki, Satoshi Dell'Antonio, Ian P. Fabricant, Daniel G. TI TESTING WEAK-LENSING MAPS WITH REDSHIFT SURVEYS: A SUBARU FIELD SO ASTROPHYSICAL JOURNAL LA English DT Article DE cosmology: observations; galaxies: clusters: general; galaxies: distances and redshifts; gravitational lensing: weak; large-scale structure of Universe ID DIGITAL SKY SURVEY; FIBER-FED SPECTROGRAPH; LARGE-SCALE STRUCTURE; DARK-MATTER HALOS; GALAXY CLUSTERS; MASS PROFILES; DEEP; HECTOSPEC; CATALOG; COSMOS AB We use a dense redshift survey in the foreground of the Subaru GTO2deg(2) weak-lensing field (centered at alpha(2000) = 16(h)04(m)44(s); delta(2000) = 43 degrees 11'24 '') to assess the completeness and comment on the purity of massive halo identification in the weak-lensing map. The redshift survey (published here) includes 4541 galaxies; 4405 are new redshifts measured with the Hectospec on the MMT. Among the weak-lensing peaks with a signal-to-noise greater than 4.25, 2/3 correspond to individual massive systems; this result is essentially identical to the Geller et al. test of the Deep Lens Survey (DLS) field F2. The Subaru map, based on images in substantially better seeing than the DLS, enables detection of less massive halos at fixed redshift as expected. We demonstrate that the procedure adopted by Miyazaki et al. for removing some contaminated peaks from the weak-lensing map improves agreement between the lensing map and the redshift survey in the identification of candidate massive systems. C1 [Kurtz, Michael J.; Geller, Margaret J.; Fabricant, Daniel G.] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. [Utsumi, Yousuke] Grad Univ Adv Studies, Mitaka, Tokyo, Japan. [Utsumi, Yousuke; Miyazaki, Satoshi] Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan. [Dell'Antonio, Ian P.] Brown Univ, Dept Phys, Providence, RI 02912 USA. RP Kurtz, MJ (reprint author), Smithsonian Astrophys Observ, 60 Garden St, Cambridge, MA 02138 USA. EM mkurtz@cfa.harvard.edu; mgeller@cfa.harvard.edu; yousuke.utsumi@nao.ac.jp; satoshi@subaru.naoj.org; ian@het.brown.edu; dfabricant@cfa.harvard.edu OI Utsumi, Yousuke/0000-0001-6161-8988; Kurtz, Michael/0000-0002-6949-0090 FU NSF [AST-0708433]; Smithsonian Institution FX We thank P. Berlind and M. Calkins for their expert operation of the Hectospec. D. Mink, J. Roll, S. Tokarz, and W. Wyatt constructed and ran the Hectospec pipeline. Nelson Caldwell deftly manages Hectospec queue scheduling for optimal scientific results. Eduard Westra assisted with some of the observations. We thank Scott Kenyon for insightful comments and discussions. We thank the anonymous referee for astute comments that improved this paper. The Smithsonian Institution generously supported Hectospec and this project. NSF grant AST-0708433 supports Ian Dell Antonio's research. NR 50 TC 9 Z9 9 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY 10 PY 2012 VL 750 IS 2 AR 168 DI 10.1088/0004-637X/750/2/168 PG 20 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 934LT UT WOS:000303446500082 ER PT J AU Lee, GH Woo, JH Lee, MG Hwang, HS Lee, JC Sohn, J Lee, JH AF Lee, Gwang-Ho Woo, Jong-Hak Lee, Myung Gyoon Hwang, Ho Seong Lee, Jong Chul Sohn, Jubee Lee, Jong Hwan TI DO BARS TRIGGER ACTIVITY IN GALACTIC NUCLEI? SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: active; galaxies: nuclei; galaxies: Seyfert; galaxies: spiral; galaxies: statistics ID DIGITAL SKY SURVEY; CENTRAL MASS CONCENTRATIONS; BARRED SPIRAL GALAXIES; SUPERMASSIVE BLACK-HOLES; ENHANCED STAR-FORMATION; BH-SIGMA DIAGRAM; SEYFERT-GALAXIES; HOST GALAXIES; MOLECULAR GAS; STARBURST GALAXIES AB We investigate the connection between the presence of bars and active galactic nucleus (AGN) activity, using a volume-limited sample of similar to 9000 late-type galaxies with axis ratio b/a > 0.6 and M-r < -19.5 + 5 log h at low redshift (0.02 <= z less than or similar to 0.055), selected from Sloan Digital Sky Survey Data Release 7. We find that the bar fraction in AGN-host galaxies (42.6%) is similar to 2.5 times higher than in non-AGN galaxies (15.6%), and that the AGN fraction is a factor of two higher in strong-barred galaxies (34.5%) than in non-barred galaxies (15.0%). However, these trends are simply caused by the fact that AGN-host galaxies are on average more massive and redder than non-AGN galaxies because the fraction of strong-barred galaxies (f(SB)) increases with u - r color and stellar velocity dispersion. When u - r color and velocity dispersion (or stellar mass) are fixed, both the excess of f(SB) in AGN-host galaxies and the enhanced AGN fraction in strong-barred galaxies disappears. Among AGN-host galaxies we find no strong difference of the Eddington ratio distributions between barred and non-barred systems. These results indicate that AGN activity is not dominated by the presence of bars, and that AGN power is not enhanced by bars. In conclusion, we do not find clear evidence that bars trigger AGN activity. C1 [Lee, Gwang-Ho; Woo, Jong-Hak; Lee, Myung Gyoon; Lee, Jong Chul; Sohn, Jubee; Lee, Jong Hwan] Seoul Natl Univ, Dept Phys & Astron, Seoul 151742, South Korea. [Hwang, Ho Seong] CEA Saclay, Serv Astrophys, F-91191 Gif Sur Yvette, France. [Hwang, Ho Seong] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. [Lee, Jong Chul] Korea Astron & Space Sci Inst, Taejon 305348, South Korea. RP Lee, GH (reprint author), Seoul Natl Univ, Dept Phys & Astron, 1 Gwanak Ro, Seoul 151742, South Korea. EM ghlee@astro.snu.ac.kr; woo@astro.snu.ac.kr; mglee@astro.snu.ac.kr; hhwang@cfa.harvard.edu; jclee@kasi.re.kr; jbsohn@astro.snu.ac.kr; leejh@astro.snu.ac.kr RI Woo, Jong-Hak/A-2790-2014 FU NRF; MEST [2010-0013875, 2010-0021558]; Centre National d'Etudes Spatiales (CNES); Smithsonian Institution FX We thank the anonymous referee for his/her useful comments which significantly improved the original manuscript. G. H. L. thanks Changbom Park and Yun-Young Choi for providing help in producing the KIAS VAGC and performing the morphology classification. M. G. L. was supported in part by Mid-career Research Program through the NRF grant funded by the MEST (No. 2010-0013875). J.H.W. acknowledges support by the Basic Science Research Program through the NRF funded by the MEST (No. 2010-0021558). H. S. H. acknowledges the Centre National d'Etudes Spatiales (CNES) and the Smithsonian Institution for the support of his post-doctoral fellowship. NR 140 TC 28 Z9 28 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD MAY 10 PY 2012 VL 750 IS 2 AR 141 DI 10.1088/0004-637X/750/2/141 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 934LT UT WOS:000303446500055 ER PT J AU Lissauer, JJ Marcy, GW Rowe, JF Bryson, ST Adams, E Buchhave, LA Ciardi, DR Cochran, WD Fabrycky, DC Ford, EB Fressin, F Geary, J Gilliland, RL Holman, MJ Howell, SB Jenkins, JM Kinemuchi, K Koch, DG Morehead, RC Ragozzine, D Seader, SE Tanenbaum, PG Torres, G Twicken, JD AF Lissauer, Jack J. Marcy, Geoffrey W. Rowe, Jason F. Bryson, Stephen T. Adams, Elisabeth Buchhave, Lars A. Ciardi, David R. Cochran, William D. Fabrycky, Daniel C. Ford, Eric B. Fressin, Francois Geary, John Gilliland, Ronald L. Holman, Matthew J. Howell, Steve B. Jenkins, Jon M. Kinemuchi, Karen Koch, David G. Morehead, Robert C. Ragozzine, Darin Seader, Shawn E. Tanenbaum, Peter G. Torres, Guillermo Twicken, Joseph D. TI ALMOST ALL OF KEPLER'S MULTIPLE-PLANET CANDIDATES ARE PLANETS SO ASTROPHYSICAL JOURNAL LA English DT Article DE planetary systems; planets and satellites: detection; techniques: photometric ID TRANSITING PLANET; TIMING VARIATIONS; LIGHT CURVES; SYSTEM; STAR; VALIDATION; CATALOG; CAMERA AB We present a statistical analysis that demonstrates that the overwhelming majority of Kepler candidate multiple transiting systems (multis) indeed represent true, physically associated transiting planets. Binary stars provide the primary source of false positives among Kepler planet candidates, implying that false positives should be nearly randomly distributed among Kepler targets. In contrast, true transiting planets would appear clustered around a smaller number of Kepler targets if detectable planets tend to come in systems and/or if the orbital planes of planets encircling the same star are correlated. There are more than one hundred times as many Kepler planet candidates in multi-candidate systems as would be predicted from a random distribution of candidates, implying that the vast majority are true planets. Most of these multis are multiple-planet systems orbiting the Kepler target star, but there are likely cases where (1) the planetary system orbits a fainter star, and the planets are thus significantly larger than has been estimated, or (2) the planets orbit different stars within a binary/multiple star system. We use the low overall false-positive rate among Kepler multis, together with analysis of Kepler spacecraft and ground-based data, to validate the closely packed Kepler-33 planetary system, which orbits a star that has evolved somewhat off of the main sequence. Kepler-33 hosts five transiting planets, with periods ranging from 5.67 to 41 days. C1 [Lissauer, Jack J.; Rowe, Jason F.; Jenkins, Jon M.; Seader, Shawn E.; Tanenbaum, Peter G.; Twicken, Joseph D.] NASA, Ames Res Ctr, SETI Inst, Moffett Field, CA 94035 USA. [Marcy, Geoffrey W.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Adams, Elisabeth; Fressin, Francois; Geary, John; Holman, Matthew J.; Ragozzine, Darin; Torres, Guillermo] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Buchhave, Lars A.] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark. [Buchhave, Lars A.] Univ Copenhagen, Nat Hist Museum Denmark, Ctr Star & Planet Format, DK-1350 Copenhagen, Denmark. [Ciardi, David R.] CALTECH, Exoplanet Sci Inst, Pasadena, CA 91125 USA. [Cochran, William D.] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA. [Fabrycky, Daniel C.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA. [Ford, Eric B.; Morehead, Robert C.] Univ Florida, Bryant Space Sci Ctr 211, Gainesville, FL 32611 USA. [Gilliland, Ronald L.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. RP Lissauer, JJ (reprint author), NASA, Ames Res Ctr, SETI Inst, Moffett Field, CA 94035 USA. EM Jack.Lissauer@nasa.gov RI Ragozzine, Darin/C-4926-2013; OI Buchhave, Lars A./0000-0003-1605-5666; Ciardi, David/0000-0002-5741-3047; /0000-0001-6545-639X; Fabrycky, Daniel/0000-0003-3750-0183 FU NASA's Science Mission Directorate; NASA [HF-51272.01-A]; STScI; [NAS 5-26555] FX Kepler was competitively selected as the 10th Discovery mission. Funding for this mission is provided by NASA's Science Mission Directorate. The authors thank the many people who gave so generously of their time to make the Kepler mission a success, chief among them Bill Borucki, who has devoted decades to developing and implementing Kepler. Useful comments were provided by Natalie Batalha, Ruth Murray-Clay, Dimitar Sasselov, Jason Steffen, and especially by Tim Brown. Kevin Zahnle and Mark Marley provided constructive comments on the manuscript. D.C.F. acknowledges NASA support through Hubble Fellowship grant No. HF-51272.01-A, awarded by STScI, operated by AURA under contract NAS 5-26555. NR 35 TC 126 Z9 126 U1 4 U2 9 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY 10 PY 2012 VL 750 IS 2 AR 112 DI 10.1088/0004-637X/750/2/112 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 934LT UT WOS:000303446500026 ER PT J AU Siemiginowska, A Stawarz, L Cheung, CC Aldcroft, TL Bechtold, J Burke, DJ Evans, D Holt, J Jamrozy, M Migliori, G AF Siemiginowska, Aneta Stawarz, Lukasz Cheung, Chi C. Aldcroft, Thomas L. Bechtold, Jill Burke, D. J. Evans, Daniel Holt, Joanna Jamrozy, Marek Migliori, Giulia TI DEEP CHANDRA X-RAY IMAGING OF A NEARBY RADIO GALAXY 4C+29.30: X-RAY/RADIO CONNECTION SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: active; galaxies: individual (4C+29.30); galaxies: jets; radiation mechanisms: non-thermal; X-rays: galaxies ID ACTIVE GALACTIC NUCLEI; PARTICLE-ACCELERATION; CENTAURUS-A; QUIET QUASARS; INTERSTELLAR-MEDIUM; RELATIVISTIC JET; ACCRETION MODELS; PARAMETER SPACE; PERSEUS CLUSTER; BLACK-HOLES AB We report results from our deep Chandra X-ray observations of a nearby radio galaxy, 4C+29.30 (z = 0.0647). The Chandra image resolves structures on sub-arcsec to arcsec scales, revealing complex X-ray morphology and detecting the main radio features: the nucleus, a jet, hotspots, and lobes. The nucleus is absorbed (N-H similar or equal to 3.95(-0.33)(+0.27) x 10(23) cm(-2)) with an unabsorbed luminosity of L2-10 keV similar or equal to (5.08 +/- 0.52) x 10(43) erg s(-1) characteristic of Type 2 active galactic nuclei. Regions of soft (< 2 keV) X-ray emission that trace the hot interstellar medium (ISM) are correlated with radio structures along the main radio axis, indicating a strong relation between the two. The X-ray emission extends beyond the radio source and correlates with the morphology of optical-line-emitting regions. We measured the ISM temperature in several regions across the galaxy to be kT similar or equal to 0.5 keV, with slightly higher temperatures (of a few keV) in the center and in the vicinity of the radio hotspots. Assuming that these regions were heated by weak shocks driven by the expanding radio source, we estimated the corresponding Mach number of 1.6 in the southern regions. The thermal pressure of the X-ray-emitting gas in the outermost regions suggests that the hot ISM is slightly underpressured with respect to the cold optical-line-emitting gas and radio-emitting plasma, which both seem to be in a rough pressure equilibrium. We conclude that 4C+29.30 displays a complex view of interactions between the jet-driven radio outflow and host galaxy environment, signaling feedback processes closely associated with the central active nucleus. C1 [Siemiginowska, Aneta; Aldcroft, Thomas L.; Burke, D. J.; Evans, Daniel; Migliori, Giulia] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Stawarz, Lukasz] JAXA, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan. [Stawarz, Lukasz; Jamrozy, Marek] Jagiellonian Univ, Astron Observ, PL-30244 Krakow, Poland. [Cheung, Chi C.] Natl Acad Sci, Washington, DC 20001 USA. [Bechtold, Jill] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. [Evans, Daniel] Elon Univ, Dept Phys, Elon, NC 27244 USA. [Holt, Joanna] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands. RP Siemiginowska, A (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM asiemiginowska@cfa.harvard.edu RI Jamrozy, Marek/F-4507-2015; OI Burke, Douglas/0000-0003-4428-7835 FU Polish MNiSW [N-N203-380336]; MNiSW [3812/B/H03/2009/36]; NASA [DPR S-15633-Y, NAS8-39073]; [GO0-11133X]; [NNX08AX35G] FX The authors thank the anonymous referee for insightful comments and Malgorzata Sobolewska, Ralph Kraft, and Dharam Vir Lal for fruitful discussion. L.S. is grateful for the support from Polish MNiSW through the grant N-N203-380336. M.J. was supported by MNiSW funds for scientific research in years 2009-2012 under the contract no. 3812/B/H03/2009/36. Work at NRL is sponsored by NASA DPR S-15633-Y. This research has made use of data obtained by the Chandra X-ray Observatory, and Chandra X-ray Center (CXC) in the application packages CIAO, ChIPS, and Sherpa. This research is funded in part by NASA contract NAS8-39073. Partial support for this work was provided by the Chandra grant GO0-11133X and XMM-Newton grant NNX08AX35G. NR 78 TC 9 Z9 9 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY 10 PY 2012 VL 750 IS 2 AR 124 DI 10.1088/0004-637X/750/2/124 PG 19 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 934LT UT WOS:000303446500038 ER PT J AU Soria, R Kuntz, KD Winkler, PF Blair, WP Long, KS Plucinsky, PP Whitmore, BC AF Soria, Roberto Kuntz, K. D. Winkler, P. Frank Blair, William P. Long, Knox S. Plucinsky, Paul P. Whitmore, Bradley C. TI THE BIRTH OF AN ULTRALUMINOUS X-RAY SOURCE IN M83 SO ASTROPHYSICAL JOURNAL LA English DT Article DE accretion, accretion disks; black hole physics; galaxies: individual (M83); X-rays: binaries ID MASS BLACK-HOLE; ACTIVE GALACTIC NUCLEI; HUBBLE-SPACE-TELESCOPE; NEARBY GALAXY SURVEY; CHANDRA DEEP SURVEY; ACCRETION DISKS; OPTICAL COUNTERPARTS; STARBURST GALAXY; BINARY-SYSTEMS; HOST GALAXIES AB A previously undetected (L-X < 10(36) erg s(-1)) source in the strongly star-forming galaxy M83 entered an ultraluminous state between 2009 August and 2010 December. It was first seen with Chandra on 2010 December 23 at L-X approximate to 4 x 10(39) erg s(-1) and has remained ultraluminous through our most recent observations in 2011 December, with typical flux variation of a factor of two. The spectrum is well fitted by a combination of absorbed power-law and disk blackbody models. While the relative contributions of the models vary with time, we have seen no evidence for a canonical state transition. The luminosity and spectral properties are consistent with accretion powered by a black hole with M-BH approximate to 40-100 M-circle dot. In 2011 July we found a luminous, blue optical counterpart that had not been seen in deep Hubble Space Telescope observations obtained in 2009 August. These optical observations suggest that the donor star is a low-mass star undergoing Roche lobe overflow, and that the blue optical emission seen during the outburst is coming from an irradiated accretion disk. This source shows that ultraluminous X-ray sources (ULXs) with low-mass companions are an important component of the ULX population in star-forming galaxies and provides further evidence that the blue optical counterparts of some ULXs need not indicate a young, high-mass companion, but rather that they may indicate X-ray reprocessing. C1 [Soria, Roberto] Curtin Univ Technol, Int Ctr Radio Astron Res, Perth, WA 6845, Australia. [Kuntz, K. D.; Blair, William P.] Johns Hopkins Univ, Henry A Rowland Dept Phys & Astron, Baltimore, MD 21218 USA. [Winkler, P. Frank] Middlebury Coll, Dept Phys, Middlebury, VT 05753 USA. [Long, Knox S.; Whitmore, Bradley C.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Plucinsky, Paul P.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Soria, R (reprint author), Curtin Univ Technol, Int Ctr Radio Astron Res, GPO Box U1987, Perth, WA 6845, Australia. EM roberto.soria@icrar.org; kuntz@pha.jhu.edu; winkler@middlebury.edu; wpb@pha.jhu.edu; long@stsci.edu; plucinsky@cfa.harvard.edu; whitmore@stsci.edu FU NASA [NAS 5-26555, NAS8-03060]; NOAO; Swift team; National Aeronautics and Space Administration through Chandra [G01-12115]; Chandra X-ray Observatory Center; National Science Foundation [AST-0908566]; [NAS83060]; [GO1-12115]; [GO-12513]; [GO-12683]; [GO-11360]; [GS-2011A-C-1] FX Based on observations made with NASA's Chandra X-Ray Observatory, the NASA/ESA Hubble Space Telescope (HST), Swift, the 6.5 m Magellan Telescopes located at Las Campanas Observatory, and the Gemini Observatory. NASA's Chandra Observatory is operated by Smithsonian Astrophysical Observatory under contract NAS83060, and the data were obtained through program GO1-12115. The HST observations were obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy (AURA), Inc., under NASA contract NAS 5-26555. The new HST observations were obtained through programs GO-12513 and GO-12683. Data in the HST archive from program GO-11360 were also used. The ground-based observations were obtained from the Magellan I Telescope at the Las Campanas Observatory and from the Gemini South Telescope of the Gemini Observatory, both awarded through NOAO, which is operated by Association of Universities for Research in Astronomy, Inc., for the National Science Foundation.; Support for this work was provided by the National Aeronautics and Space Administration through Chandra Grant No. G01-12115, issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of NASA under contract NAS8-03060. P. F. W. and W. P. B. are grateful for both observing and travel support for the Gemini observations from the Gemini office at NOAO. P. F. W. also acknowledges financial support from the National Science Foundation through grant AST-0908566 and the hospitality of the Research School of Astronomy and Astrophysics, Australian National University, during a portion of the work presented here.; We acknowledge the use of public data from the Swift data archive. This research has made use of data obtained from the High Energy Astrophysics Science Archive Research Center (HEASARC), provided by NASA's Goddard Space Flight Center.; The Gemini data were obtained under program GS-2011A-C-1. The Gemini Observatory is operated by AURA under a cooperative agreement with the NSF on behalf of the Gemini partnership: the National Science Foundation (United States), the Science and Technology Facilities Council (United Kingdom), the National Research Council (Canada), CONICYT (Chile), the Australian Research Council (Australia), Ministerio da Ciencia, Tecnologia e Innovacion (Brazil), and Ministerio de Ciencia, Tecnologia e Innovacion Productiva (Argentina). NR 116 TC 26 Z9 26 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY 10 PY 2012 VL 750 IS 2 AR 152 DI 10.1088/0004-637X/750/2/152 PG 17 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 934LT UT WOS:000303446500066 ER PT J AU Tonry, JL Stubbs, CW Lykke, KR Doherty, P Shivvers, IS Burgett, WS Chambers, KC Hodapp, KW Kaiser, N Kudritzki, RP Magnier, EA Morgan, JS Price, PA Wainscoat, RJ AF Tonry, J. L. Stubbs, C. W. Lykke, K. R. Doherty, P. Shivvers, I. S. Burgett, W. S. Chambers, K. C. Hodapp, K. W. Kaiser, N. Kudritzki, R. -P. Magnier, E. A. Morgan, J. S. Price, P. A. Wainscoat, R. J. TI THE Pan-STARRS1 PHOTOMETRIC SYSTEM SO ASTROPHYSICAL JOURNAL LA English DT Article DE atmospheric effects; instrumentation: photometers; surveys; techniques: photometric ID DIGITAL SKY SURVEY; ATMOSPHERIC EXTINCTION; STELLAR LOCUS; CALIBRATION; TELESCOPES; HIPPARCOS; PASSBANDS; STANDARDS; PANSTARRS; IMAGER AB The Pan-STARRS1 survey is collecting multi-epoch, multi-color observations of the sky north of declination -30 degrees to unprecedented depths. These data are being photometrically and astrometrically calibrated and will serve as a reference for many other purposes. In this paper, we present our determination of the Pan-STARRS1 photometric system: g(P1), r(P1), i(P1), z(P1), y(P1), and w(P1). The Pan-STARRS1 photometric system is fundamentally based on the Hubble Space Telescope Calspec spectrophotometric observations, which in turn are fundamentally based on models of white dwarf atmospheres. We define the Pan-STARRS1 magnitude system and describe in detail our measurement of the system passbands, including both the instrumental sensitivity and atmospheric transmission functions. By-products, including transformations to other photometric systems, Galactic extinction, and stellar locus, are also provided. We close with a discussion of remaining systematic errors. C1 [Tonry, J. L.; Burgett, W. S.; Chambers, K. C.; Hodapp, K. W.; Kaiser, N.; Kudritzki, R. -P.; Magnier, E. A.; Morgan, J. S.; Wainscoat, R. J.] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA. [Stubbs, C. W.; Shivvers, I. S.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Stubbs, C. W.; Doherty, P.] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA. [Lykke, K. R.] NIST, Gaithersburg, MD 20899 USA. [Shivvers, I. S.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Price, P. A.] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA. RP Tonry, JL (reprint author), Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA. RI Stubbs, Christopher/C-2829-2012; OI Stubbs, Christopher/0000-0003-0347-1724; Shivvers, Isaac/0000-0003-3373-8047; Chambers, Kenneth /0000-0001-6965-7789 FU National Science Foundation [AST-1009749]; National Aeronautics and Space Administration [NNX08AR22G] FX Support for this work was provided by National Science Foundation grant AST-1009749. The PS1 Surveys have been made possible through contributions of the Institute for Astronomy, the University of Hawaii, the Pan-STARRS Project Office, the Max-Planck Society and its participating institutes, the Max-Planck Institute for Astronomy, Heidelberg and the Max-Planck Institute for Extraterrestrial Physics, Garching, The Johns Hopkins University, Durham University, the University of Edinburgh, Queen'sUniversity Belfast, the Harvard-Smithsonian Center for Astrophysics, the Las Cumbres Observatory Global Telescope Network, Incorporated, the National Central University of Taiwan, and the National Aeronautics and Space Administration under grant no. NNX08AR22G issued through the Planetary Science Division of the NASA Science Mission Directorate. NR 41 TC 195 Z9 196 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY 10 PY 2012 VL 750 IS 2 AR 99 DI 10.1088/0004-637X/750/2/99 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 934LT UT WOS:000303446500013 ER PT J AU Wei, LH Keto, E Ho, LC AF Wei, Lisa H. Keto, Eric Ho, Luis C. TI TWO POPULATIONS OF MOLECULAR CLOUDS IN THE ANTENNAE GALAXIES SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: individual (NGC 4038, NGC 4039); galaxies: ISM; galaxies: starburst; galaxies: star clusters: general ID YOUNG STAR-CLUSTERS; SPACE-TELESCOPE OBSERVATIONS; X-RAY SOURCES; GLOBULAR-CLUSTERS; CHANDRA OBSERVATIONS; GALACTIC-CENTER; NGC 4038/4039; LUMINOSITY FUNCTION; INTERSTELLAR-MEDIUM; FORMING RINGS AB Super star clusters-extremely massive clusters found predominately in starburst environments-are essential building blocks in the formation of galaxies and thought to dominate star formation in the high-redshift universe. However, the transformation from molecular gas into these ultracompact star clusters is not well understood. To study this process, we used the Submillimeter Array and the Plateau de Bure Interferometer to obtain high angular resolution (similar to 1 ''.5 or 160 pc) images of the Antennae overlap region in CO(2-1) to search for the molecular progenitors of the super star clusters. We resolve the molecular gas distribution into a large number of clouds, extending the differential cloud mass function down to a 5 sigma completeness limit of 3.8 x 10(5) M-circle dot. We identify a distinct break in the mass function around log M-mol/M-circle dot approximate to 6.5, which separates the molecular clouds into two distinct populations. The smaller, less massive clouds reside in more quiescent areas in the region, while the larger, more massive clouds cluster around regions of intense star formation. A broken power-law fit to the mass function yields slopes of alpha = -1.39 +/- 0.10 and alpha = -1.44 +/- 0.14 for the low- and high-mass cloud population, well matched to the mass function found for super star clusters in the Antennae galaxies. We find large velocity gradients and velocity dispersions at the locations of intense star formation, suggestive of compressive shocks. It is likely that these environmental factors contribute to the formation of the observed massive molecular clouds and super star clusters in the Antennae galaxies. C1 [Wei, Lisa H.; Keto, Eric] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Ho, Luis C.] Observ Carnegie Inst Sci, Pasadena, CA 91101 USA. RP Wei, LH (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. FU Carnegie Institution for Science; Smithsonian Institution; Academia Sinica; NASA FX We thank the anonymous referee for helpful comments which improved this manuscript. We thank Zhao-Yu Li for help in generating the three-color image in Figure 1. We are grateful to Alberto Bolatto, Izaskun Jimenez-Serra, and Peter Teuben for helpful discussions. The research of L.C.H. is supported by the Carnegie Institution for Science. The Submillimeter Array is a joint project between the Smithsonian Astrophysical Observatory and the Academia Sinica Institute of Astronomy and Astrophysics and is funded by the Smithsonian Institution and the Academia Sinica. This work is based in part on archival data obtained with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. NR 80 TC 28 Z9 28 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD MAY 10 PY 2012 VL 750 IS 2 AR 136 DI 10.1088/0004-637X/750/2/136 PG 18 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 934LT UT WOS:000303446500050 ER PT J AU Hermes, JJ Montgomery, MH Winget, DE Brown, WR Kilic, M Kenyon, SJ AF Hermes, J. J. Montgomery, M. H. Winget, D. E. Brown, Warren R. Kilic, Mukremin Kenyon, Scott J. TI SDSS J184037.78+642312.3: THE FIRST PULSATING EXTREMELY LOW MASS WHITE DWARF SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE binaries: close; Galaxy: stellar content; stars: individual (SDSS J184037.78+642312.3); stars: variables: general; white dwarfs ID ZZ-CETI STARS; BINARY; HELIUM; EVOLUTION; I. AB We report the discovery of the first pulsating extremely low mass (ELM) white dwarf (WD), SDSS J184037.78+642312.3 (hereafter J1840). This DA (hydrogen-atmosphere) WD is by far the coolest and the lowest-mass pulsating WD, with T-eff = 9100 +/- 170 K and log g = 6.22 +/- 0.06, which corresponds to a mass of similar to 0.17 M-circle dot. This low-mass pulsating WD greatly extends the DAV (or ZZ Ceti) instability strip, effectively bridging the log g gap between WDs and main-sequence stars. We detect high-amplitude variability in J1840 on timescales exceeding 4000 s, with a non-sinusoidal pulse shape. Our observations also suggest that the variability is multi-periodic. The star is in a 4.6 hr binary with another compact object, most likely another WD. Future, more extensive time-series photometry of this ELM WD offers the first opportunity to probe the interior of a low-mass, presumably He-core WD using the tools of asteroseismology. C1 [Hermes, J. J.; Montgomery, M. H.; Winget, D. E.] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA. [Hermes, J. J.; Montgomery, M. H.; Winget, D. E.] McDonald Observ, Ft Davis, TX 79734 USA. [Brown, Warren R.; Kenyon, Scott J.] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. [Kilic, Mukremin] Univ Oklahoma, Homer L Dodge Dept Phys & Astron, Norman, OK 73019 USA. RP Hermes, JJ (reprint author), Univ Texas Austin, Dept Astron, RLM 15308, Austin, TX 78712 USA. EM jjhermes@astro.as.utexas.edu OI Kenyon, Scott/0000-0003-0214-609X FU NSF [AST-0909107]; Norman Hackerman Advanced Research Program [003658-0252-2009] FX J.J.H., M.H.M., and D.E.W. gratefully acknowledge the support of the NSF under grant AST-0909107 and the Norman Hackerman Advanced Research Program under grant 003658-0252-2009. The authors are grateful to the McDonald Observatory support staff, F. Mullally for developing much of the data analysis pipeline used here, and to J. Pelletier of the UT Freshman Research Initiative for some of the analysis used in Table 2. NR 38 TC 41 Z9 41 U1 1 U2 7 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD MAY 10 PY 2012 VL 750 IS 2 AR L28 DI 10.1088/2041-8205/750/2/L28 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 934MP UT WOS:000303448700002 ER PT J AU Krauss, MI Soderberg, AM Chomiuk, L Zauderer, BA Brunthaler, A Bietenholz, MF Chevalier, RA Fransson, C Rupen, M AF Krauss, M. I. Soderberg, A. M. Chomiuk, L. Zauderer, B. A. Brunthaler, A. Bietenholz, M. F. Chevalier, R. A. Fransson, C. Rupen, M. TI EXPANDED VERY LARGE ARRAY OBSERVATIONS OF THE RADIO EVOLUTION OF SN 2011dh SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE supernovae: individual (SN 2011dh) ID IIB SUPERNOVA; YELLOW SUPERGIANTS; BINARY PROGENITOR; 1993J; 2003BG; EXPANSION; EMISSION; COMPACT; MASS; M51 AB We report on Expanded Very Large Array observations of the Type IIb supernova 2011dh, performed over the first 100 days of its evolution and spanning 1-40 GHz in frequency. The radio emission is well described by the self-similar propagation of a spherical shockwave, generated as the supernova ejecta interact with the local circumstellar environment. Modeling this emission with a standard synchrotron self-absorption (SSA) model gives an average expansion velocity of v approximate to 0.1c, supporting the classification of the progenitor as a compact star (R-star approximate to 10(11) cm). We find that the circumstellar density is consistent with a rho proportional to r(-2) profile. We determine that the progenitor shed mass at a constant rate of approximate to 3 x 10(-5) M-circle dot yr(-1), assuming a wind velocity of 1000 km s(-1) (values appropriate for a Wolf-Rayet star), or approximate to 7 x 10(-7) M-circle dot yr(-1) assuming 20 km s(-1) (appropriate for a yellow supergiant [YSG] star). Both values of the mass-loss rate assume a converted fraction of kinetic to magnetic energy density of epsilon(B) = 0.1. Although optical imaging shows the presence of a YSG, the rapid optical evolution and fast expansion argue that the progenitor is a more compact star-perhaps a companion to the YSG. Furthermore, the excellent agreement of the radio properties of SN 2011dh with the SSA model implies that any YSG companion is likely in a wide, non-interacting orbit. C1 [Krauss, M. I.; Chomiuk, L.; Brunthaler, A.; Rupen, M.] Natl Radio Astron Observ, Socorro, NM 87801 USA. [Soderberg, A. M.; Chomiuk, L.; Zauderer, B. A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Brunthaler, A.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. [Bietenholz, M. F.] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada. [Bietenholz, M. F.] Hartebeesthoek Radio Observ, ZA-1740 Krugersdorp, South Africa. [Chevalier, R. A.] Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA. [Fransson, C.] Stockholm Univ, Oskar Klein Ctr, Dept Astron, S-10691 Stockholm, Sweden. RP Krauss, MI (reprint author), Natl Radio Astron Observ, Socorro, NM 87801 USA. FU European Union [275596] FX The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. A. B. was supported by a Marie Curie Outgoing International Fellowship (FP7) of the European Union (project number 275596). We thank the anonymous referee for helpful comments and suggestions. We acknowledge with thanks the variable star observations from the AAVSO International database contributed by observers worldwide and used in this research. This research has made use of NASA's Astrophysics Data System Bibliographic Services. L. C. is a Jansky Fellow of the National Radio Astronomy Observatory. NR 43 TC 23 Z9 23 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD MAY 10 PY 2012 VL 750 IS 2 AR L40 DI 10.1088/2041-8205/750/2/L40 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 934MP UT WOS:000303448700014 ER PT J AU Strader, J Chomiuk, L Maccarone, TJ Miller-Jones, JCA Seth, AC Heinke, CO Sivakoff, GR AF Strader, Jay Chomiuk, Laura Maccarone, Thomas J. Miller-Jones, James C. A. Seth, Anil C. Heinke, Craig O. Sivakoff, Gregory R. TI NO EVIDENCE FOR INTERMEDIATE-MASS BLACK HOLES IN GLOBULAR CLUSTERS: STRONG CONSTRAINTS FROM THE JVLA SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE black hole physics; globular clusters: general; radio continuum: general ID X-RAY BINARY; SPACE-TELESCOPE EVIDENCE; SAGITTARIUS A-ASTERISK; OMEGA-CENTAURI; STAR-CLUSTERS; ACCRETION MODEL; RADIO-EMISSION; DWARF GALAXY; IONIZED-GAS; LARGE ARRAY AB With a goal of searching for accreting intermediate-mass black holes (IMBHs), we report the results of ultra-deep Jansky Very Large Array radio continuum observations of the cores of three Galactic globular clusters: M15, M19, and M22. We reach rms noise levels of 1.5-2.1 mu Jy beam (1) at an average frequency of 6 GHz. No sources are observed at the center of any of the clusters. For a conservative set of assumptions about the properties of the accretion, we set 3 sigma upper limits on IMBHs from 360 to 980 M-circle dot. These limits are among the most stringent obtained for any globular cluster. They add to a growing body of work that suggests either (1) IMBHs greater than or similar to 1000 M-circle dot are rare in globular clusters or (2) when present. IMBHs accrete in an extraordinarily inefficient manner. C1 [Strader, Jay; Chomiuk, Laura] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Chomiuk, Laura] Natl Radio Astron Observ, Socorro, NM 87801 USA. [Maccarone, Thomas J.] Univ Southampton, Sch Phys & Astron, Highfield SO17 IBJ, England. [Miller-Jones, James C. A.] Curtin Univ Technol, Int Ctr Radio Astron Res, Perth, WA 6845, Australia. [Seth, Anil C.] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA. [Heinke, Craig O.; Sivakoff, Gregory R.] Univ Alberta, Dept Phys, Edmonton, AB T6G 2E1, Canada. RP Strader, J (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM jstrader@cfa.harvard.edu RI Miller-Jones, James/B-2411-2013; Sivakoff, Gregory/G-9602-2011; OI Miller-Jones, James/0000-0003-3124-2814; Sivakoff, Gregory/0000-0001-6682-916X; Heinke, Craig/0000-0003-3944-6109 FU NSERC; Ingenuity New Faculty Award FX NRAO is a facility of the NSF operated under cooperative agreement by AUI. L. C. is a Jansky Fellow of NRAO. G. R. S. and C.O.H. are supported by NSERC, and C.O.H. also by an Ingenuity New Faculty Award. NR 50 TC 43 Z9 43 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 EI 2041-8213 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD MAY 10 PY 2012 VL 750 IS 2 AR L27 DI 10.1088/2041-8205/750/2/L27 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 934MP UT WOS:000303448700001 ER PT J AU Tomsick, JA Bodaghee, A Rodriguez, J Chaty, S Camilo, F Fornasini, F Rahoui, F AF Tomsick, John A. Bodaghee, Arash Rodriguez, Jerome Chaty, Sylvain Camilo, Fernando Fornasini, Francesca Rahoui, Farid TI IS IGR J11014-6103 A PULSAR WITH THE HIGHEST KNOWN KICK VELOCITY? SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE ISM: supernova remnants; pulsars: general; stars: individual (IGR J11014-6103, SNR G290.1-00.8); stars: neutron; X-rays: stars ID CENTRAL COMPACT OBJECT; X-RAY; INTERSTELLAR-MEDIUM; PSR B2224+65; PUPPIS-A; DISCOVERY; YOUNG; ABSORPTION; TAILS AB We report on Chandra X-ray and Parkes radio observations of IGR J11014-6103, which is a possible pulsar wind nebula with a complex X-ray morphology and a likely radio counterpart. With the superb angular resolution of Chandra, we find evidence that a portion of the extended emission may be related to a bow shock due to the putative pulsar moving through the interstellar medium. The inferred direction of motion is consistent with IGR J11014-6103 having been born in the event that produced the supernova remnant (SNR) MSH 11-61A. If this association is correct, then previous constraints on the expansion of MSH 11-61A imply a transverse velocity for IGR J11014-6103 of 2400-2900 km s(-1), depending on the SNR model used. This would surpass the kick velocities of any known pulsars and rival or surpass the velocities of any compact objects that are associated with SNRs. While it is important to confirm the nature of the source, our radio pulsation search did not yield a detection. C1 [Tomsick, John A.; Bodaghee, Arash; Fornasini, Francesca] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA. [Rodriguez, Jerome; Chaty, Sylvain] Univ Paris 07, CEA Saclay, Serv Astrophys, CNRS,CEA,UMR 7158,DSM,IRFU, FR-91191 Gif Sur Yvette, France. [Camilo, Fernando] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA. [Rahoui, Farid] Harvard Univ, Dept Astron, Cambridge, MA 02138 USA. [Rahoui, Farid] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Tomsick, JA (reprint author), Univ Calif Berkeley, Space Sci Lab, 7 Gauss Way, Berkeley, CA 94720 USA. EM jtomsick@ssl.berkeley.edu OI Rodriguez, Jerome/0000-0002-4151-4468; Chaty, Sylvain/0000-0002-5769-8601 FU NASA [GO1-12046X, NAS8-03060]; Chandra X-Ray Observatory Center; Commonwealth of Australia FX We acknowledge useful discussions with J. Halpern, V. Kaspi, S. Boggs, and H. Tananbaum. Support for this work was provided by NASA through Chandra Award Number GO1-12046X issued by the Chandra X-Ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory under NASA contract NAS8-03060. The Parkes Observatory is part of the Australia Telescope, which is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO. NR 29 TC 9 Z9 9 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD MAY 10 PY 2012 VL 750 IS 2 AR L39 DI 10.1088/2041-8205/750/2/L39 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 934MP UT WOS:000303448700013 ER PT J AU Boyer, D Crofoot, MC Walsh, PD AF Boyer, Denis Crofoot, Margaret C. Walsh, Peter D. TI Non-random walks in monkeys and humans SO JOURNAL OF THE ROYAL SOCIETY INTERFACE LA English DT Article DE movement ecology; home range; memory; human mobility; capuchin monkeys; scaling laws ID HUMAN MOBILITY; ANOMALOUS DIFFUSION; PATTERNS; MODELS; MECHANISMS; EMERGENCE; MOVEMENT; DYNAMICS; HOME; LAWS AB Principles of self-organization play an increasingly central role in models of human activity. Notably, individual human displacements exhibit strongly recurrent patterns that are characterized by scaling laws and can be mechanistically modelled as self-attracting walks. Recurrence is not, however, unique to human displacements. Here we report that the mobility patterns of wild capuchin monkeys are not random walks, and they exhibit recurrence properties similar to those of cell phone users, suggesting spatial cognition mechanisms shared with humans. We also show that the highly uneven visitation patterns within monkey home ranges are not entirely self-generated but are forced by spatio-temporal habitat heterogeneities. If models of human mobility are to become useful tools for predictive purposes, they will need to consider the interaction between memory and environmental heterogeneities. C1 [Boyer, Denis] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 04510, DF, Mexico. [Boyer, Denis] Univ Nacl Autonoma Mexico, Ctr Ciencias Complejidad, Mexico City 04510, DF, Mexico. [Crofoot, Margaret C.] Smithsonian Trop Res Inst, Panama City, Panama. [Crofoot, Margaret C.] Max Planck Inst Ornithol, Dept Migrat & Immunoecol, D-78315 Radolfzell am Bodensee, Germany. [Crofoot, Margaret C.] Princeton Univ, Dept Ecol & Evolutionary Biol, Princeton, NJ 08544 USA. [Walsh, Peter D.] VaccinApe, Bethesda, MD 20816 USA. RP Boyer, D (reprint author), Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 04510, DF, Mexico. EM boyer@fisica.unam.mx FU National Center for Ecological Analysis and Synthesis; NSF [DEB-0553768]; University of California, Santa Barbara; State of California; Harvard University FX This work was conducted as a part of the 'Efficient Wildlife Disease Control: from Social Network Self-organization to Optimal Vaccination' Working Group supported by the National Center for Ecological Analysis and Synthesis, a centre funded by the NSF (grant no. DEB-0553768), the University of California, Santa Barbara, and the State of California. Funding for the data collection was provided to M.C.C. by the Smithsonian Tropical Research Institute and the Frederik Sheldon Travelling Fellowship from the Harvard University. Required permits were obtained from the Autoridad Nacional del Ambiente, Panama and the Smithsonian Tropical Research Institute Institutional Animal Care and Use Committee. All research complied with the laws of the Republic of Panama and the United States. NR 34 TC 15 Z9 15 U1 1 U2 28 PU ROYAL SOC PI LONDON PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND SN 1742-5689 EI 1742-5662 J9 J R SOC INTERFACE JI J. R. Soc. Interface PD MAY 7 PY 2012 VL 9 IS 70 BP 842 EP 847 DI 10.1098/rsif.2011.0582 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 916WQ UT WOS:000302134300004 PM 22031731 ER PT J AU Ortega-Jimenez, VM Dudley, R AF Ortega-Jimenez, Victor Manuel Dudley, Robert TI Aerial shaking performance of wet Anna's hummingbirds SO JOURNAL OF THE ROYAL SOCIETY INTERFACE LA English DT Article DE feather; flexibility; flight; hovering; manoeuvrability; oscillation ID WING-SPREADING BEHAVIOR; MANEUVERING FLIGHT; FEATHERS; WATER; HYDROPHOBICITY; BIRD; COST AB External wetting poses problems of immediate heat loss and long-term pathogen growth for vertebrates. Beyond these risks, the locomotor ability of smaller animals, and particularly of fliers, may be impaired by water adhering to the body. Here, we report on the remarkable ability of hummingbirds to perform rapid shakes in order to expel water from their plumage even while in flight. Kinematic performance of aerial versus non-aerial shakes (i.e. those performed while perching) was compared. Oscillation frequencies of the head, body and tail were lower in aerial shakes. Tangential speeds and accelerations of the trunk and tail were roughly similar in aerial and non-aerial shakes, but values for head motions in air were twice as high when compared with shakes while perching. Azimuthal angular amplitudes for both aerial and non-aerial shakes reached values greater than 180 degrees for the head, greater than 45 degrees for the body trunk and slightly greater than 90 degrees for the tail and wings. Using a feather on an oscillating disc to mimic shaking motions, we found that bending increased average speeds by up to 36 per cent and accelerations of the feather tip up to fourfold relative to a hypothetical rigid feather. Feather flexibility may help to enhance shedding of water and reduce body oscillations during shaking. C1 [Ortega-Jimenez, Victor Manuel; Dudley, Robert] Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA. [Dudley, Robert] Smithsonian Trop Res Inst, Balboa, Panama. RP Ortega-Jimenez, VM (reprint author), Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA. EM vortega@berkeley.edu OI Ortega-Jimenez, Victor Manuel/0000-0003-0024-5086 FU UC University of California MEXUS-CONACYT FX We thank members of the Dudley laboratory, especially Nir Sapir, Marta Wolf and Dennis Evangelista, for comments and suggestions on the manuscript, and David Hu for insightful critique. We also thank Sarahi Arriaga-Ramirez for sharing her MATLAB skills with us. We also thank the two anonymous reviewers for their comments. V.M.O.-J. was supported by UC University of California MEXUS-CONACYT, and dedicates this paper to his parents (a mis padres). Hummingbird care and experimental procedures were approved by the IACUC of the University of California, Berkeley. NR 30 TC 10 Z9 10 U1 0 U2 13 PU ROYAL SOC PI LONDON PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND SN 1742-5689 J9 J R SOC INTERFACE JI J. R. Soc. Interface PD MAY 7 PY 2012 VL 9 IS 70 BP 1093 EP 1099 DI 10.1098/rsif.2011.0608 PG 7 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 916WQ UT WOS:000302134300027 PM 22072447 ER PT J AU Squyres, SW Arvidson, RE Bell, JF Calef, F Clark, BC Cohen, BA Crumpler, LA de Souza, PA Farrand, WH Gellert, R Grant, J Herkenhoff, KE Hurowitz, JA Johnson, JR Jolliff, BL Knoll, AH Li, R McLennan, SM Ming, DW Mittlefehldt, DW Parker, TJ Paulsen, G Rice, MS Ruff, SW Schroder, C Yen, AS Zacny, K AF Squyres, S. W. Arvidson, R. E. Bell, J. F., III Calef, F., III Clark, B. C. Cohen, B. A. Crumpler, L. A. de Souza, P. A., Jr. Farrand, W. H. Gellert, R. Grant, J. Herkenhoff, K. E. Hurowitz, J. A. Johnson, J. R. Jolliff, B. L. Knoll, A. H. Li, R. McLennan, S. M. Ming, D. W. Mittlefehldt, D. W. Parker, T. J. Paulsen, G. Rice, M. S. Ruff, S. W. Schroeder, C. Yen, A. S. Zacny, K. TI Ancient Impact and Aqueous Processes at Endeavour Crater, Mars SO SCIENCE LA English DT Article ID MERIDIANI-PLANUM; SUEVITE BRECCIA; RIES CRATER; GERMANY; ORIGIN; VEINS; HISTORY; GYPSUM; WATER; ROCK AB The rover Opportunity has investigated the rim of Endeavour Crater, a large ancient impact crater on Mars. Basaltic breccias produced by the impact form the rim deposits, with stratigraphy similar to that observed at similar-sized craters on Earth. Highly localized zinc enrichments in some breccia materials suggest hydrothermal alteration of rim deposits. Gypsum-rich veins cut sedimentary rocks adjacent to the crater rim. The gypsum was precipitated from low-temperature aqueous fluids flowing upward from the ancient materials of the rim, leading temporarily to potentially habitable conditions and providing some of the waters involved in formation of the ubiquitous sulfate-rich sandstones of the Meridiani region. C1 [Squyres, S. W.; Rice, M. S.] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA. [Arvidson, R. E.; Jolliff, B. L.] Washington Univ, Dept Earth & Planetary Sci, St Louis, MO 63031 USA. [Bell, J. F., III; Ruff, S. W.] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA. [Calef, F., III; Hurowitz, J. A.; Parker, T. J.; Yen, A. S.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Clark, B. C.; Farrand, W. H.] Space Sci Inst, Boulder, CO 80301 USA. [Cohen, B. A.] NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35812 USA. [Crumpler, L. A.] New Mexico Museum Nat Hist & Sci, Albuquerque, NM 87104 USA. [de Souza, P. A., Jr.] Univ Tasmania, Human Interface Technol Lab, Launceston, Tas 7250, Australia. [Gellert, R.] Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada. [Grant, J.] Smithsonian Inst, Ctr Earth & Planetary Studies, Washington, DC 20560 USA. [Herkenhoff, K. E.] US Geol Survey, Astrogeol Sci Ctr, Flagstaff, AZ 86001 USA. [Johnson, J. R.] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA. [Knoll, A. H.] Harvard Univ, Bot Museum, Cambridge, MA 02138 USA. [Li, R.] Ohio State Univ, Dept Civil Environm & Geodet Engn, Columbus, OH 43210 USA. [McLennan, S. M.] SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA. [Ming, D. W.; Mittlefehldt, D. W.] NASA, Lyndon B Johnson Space Ctr, Houston, TX 77058 USA. [Paulsen, G.; Zacny, K.] Honeybee Robot & Spacecraft Mech Corp, Pasadena, CA 91103 USA. [Schroeder, C.] Univ Bayreuth, D-72076 Tubingen, Germany. [Schroeder, C.] Univ Tubingen, D-72076 Tubingen, Germany. RP Squyres, SW (reprint author), Cornell Univ, Dept Astron, Ithaca, NY 14853 USA. EM squyres@astro.cornell.edu RI Schroder, Christian/B-3870-2009; de Souza, Paulo/B-8961-2008; Johnson, Jeffrey/F-3972-2015 OI Schroder, Christian/0000-0002-7935-6039; de Souza, Paulo/0000-0002-0091-8925; FU NASA FX This research was carried out for the Jet Propulsion Laboratory, California Institute of Technology, under a contract with NASA. NR 36 TC 76 Z9 77 U1 1 U2 60 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 EI 1095-9203 J9 SCIENCE JI Science PD MAY 4 PY 2012 VL 336 IS 6081 BP 570 EP 576 DI 10.1126/science.1220476 PG 7 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 935DJ UT WOS:000303498800041 PM 22556248 ER PT J AU Munroe, TA AF Munroe, Thomas A. TI The spotted flounder, Azygopus flemingi Nielsen 1961 (Pisces: Pleuronectiformes: Rhombosoleidae), from deep waters off New Zealand: a second valid species of Azygopus Norman 1926, with notes on distribution, size, maturity, and ecology SO ZOOTAXA LA English DT Article DE rhombosoleid flatfish; taxonomy; New Zealand endemic fishes; deep-sea flatfish; species re-description; squamation; scale morphology; Azygopus pinnifasciatus; sexual dimorphism ID DEMERSAL FISH ASSEMBLAGES AB Since its description, Azyygopus Norman, 1926 was considered by subsequent authors to be a monotypic genus in the Order Pleuronectiformes comprised only of A. pinnifasciatus Norman, 1926, known from deep waters (90-900 m, usually 200-600 m) off the southern and southeastern coasts of Australia. In 1961, a subspecies, A. pinnifasciatus flemingi Nielsen, was described based on three specimens collected at 610 m in the Tasman Sea off the South Island, New Zealand. From its description to contemporary literature evaluating its status, recognition of A. p. flemingi as a distinct taxon has been rejected by all but two studies reporting on Azygopus from New Zealand waters. Until the late 20th century, specimens of Azygopus had been rarely collected off New Zealand and little was known about these fishes. Over the past 25 years, collecting by scientific expeditions and expanding deep-sea fisheries have captured over 195 specimens of Azygopus from a variety of deep-sea locations around New Zealand. Recently-captured specimens of Azygopus collected around New Zealand and deposited in fish collections have been identified as either A. pinnifasciatus Norman or A. flemingi Nielsen, suggesting the possibility that two species of Azygopus occur in New Zealand waters. This study examined the holotype, a paratype, and 25 non-type specimens of A. pinnifasciatus collected off Australia, and the most comprehensive series of specimens of Azygopus collected from New Zealand waters. These specimens included the holotype and two paratypes of A. p. flemingi and 191 other specimens collected from throughout the entire depth range (153-942 m) and representing wide coverage of geographic areas around New Zealand where Azygopus have been collected. Comparisons of these specimens indicate that a second species, A. flemingi Nielsen, should be recognized in the genus Azygopus, and that this species is the only member of this genus occurring in New Zealand waters. Azygopus flemingi is readily distinguished from A. pinnifasciatus by conspicuous differences in ocular-and blind-side color patterns, in numbers of ocular-side pelvic-fin rays, total vertebrae, lateral-line scales, and gillrakers on the first gill arch, morphology of blind-side scales and squamation patterns, length of blind-side pectoral fins, presence/absence of scales between upper jaw and ventral margin of lower eye, and pigment patterns on dorsal and anal fins of adults. Adult A. flemingi and A. pinnifasciatus are sexually dimorphic in several features. Data on maximum size and size at maturity, and depth of occurrence are summarized for A. flemingi. C1 NMFS NOAA, Smithsonian Inst, Natl Systemat Lab, NHB, Washington, DC 20013 USA. RP Munroe, TA (reprint author), NMFS NOAA, Smithsonian Inst, Natl Systemat Lab, NHB, POB 37012,WC 57,MRC 153, Washington, DC 20013 USA. EM munroet@si.edu FU NMNZ Te Papa; NZ Foundation for Research Science and Technology through the Te Papa Biosystematics of NZ EEZ Fishes within NIWA's Marine Biodiversity and Biosecurity OBI [C01X0502] FX I thank members of the fish group at the Museum of New Zealand Te Papa for their kind hospitality and assistance during my visits to the fish collection. C. Struthers and A. Stewart located data and references and retrieved catalogue information for specimens of A. flemingi curated at NMNZ; R. Crec'hriou (formerly NMNZ) and J. Barker (NMNZ) provided radiographs. The author also extends his gratitude to the following individuals for their assistance with obtaining data and other information that greatly improved the scope of this study: M. McGrouther and A. Hay (AMS) assisted with information on type specimens, provided the photograph and radiograph of the holotype of A. pinnifasciatus, and also arranged for loan of specimens from the fish collection at AMS; D. Bray (NMV) arranged for loan of specimens of A. pinnifasciatus; M. Lockett (AMS) examined color details and provided counts and measurements of the holotype of A. pinnifasciatus; P. Moller (ZMUC) provided counts, measurements, radiograph, and photograph of the holotype of A. flemingi; G. Shinohara (NSMT) provided catalogue information and radiographs of specimens curated at NSMT; J. Nielsen (ZMUC) provided comments regarding taxonomic decisions made in the original description of A. pinnifasciatus flemingi; T. Trinski provided catalogue information for specimens curated at the Auckland Museum fish collection. Color photographs of fishes used in this study were kindly provided by C. Struthers (NMNZ Te Papa), M. Allen and M. McGrouther (AMS). M. Freeborn (NMNZ) provided illustrations used in the manuscript. C. Struthers and M. Nizinski (NMFS/National Systematics Laboratory) assisted with preparation of figures. C. Struthers prepared the distribution map. M. Francis, NIWA, provided information on abundance from the Ministry of Fisheries research trawl database. K. Graham, Research Associate, AMS, provided information on A. pinnifasciatus distribution and abundance off southeastern Australia. A. Stewart provided helpful comments in his review of a preliminary draft of the manuscript. The author extends his appreciation to C. Roberts, NMNZ Te Papa, for his continued support and for kindly arranging funding to help support this study which was conducted at the Museum of New Zealand Te Papa. Partial financial support for this work was provided by the NZ Foundation for Research Science and Technology through the Te Papa Biosystematics of NZ EEZ Fishes subcontract within NIWA's Marine Biodiversity and Biosecurity OBI program (contract C01X0502). Thanks to all investigators who retained specimens during their survey work. NR 27 TC 1 Z9 1 U1 1 U2 1 PU MAGNOLIA PRESS PI AUCKLAND PA PO BOX 41383, AUCKLAND, ST LUKES 1030, NEW ZEALAND SN 1175-5326 EI 1175-5334 J9 ZOOTAXA JI Zootaxa PD MAY 2 PY 2012 IS 3297 BP 1 EP 33 PG 33 WC Zoology SC Zoology GA 940JE UT WOS:000303885000001 ER PT J AU Urashima, T Asakuma, S Leo, F Fukuda, K Messer, M Oftedal, OT AF Urashima, Tadasu Asakuma, Sadaki Leo, Fiame Fukuda, Kenji Messer, Michael Oftedal, Olav T. TI The Predominance of Type I Oligosaccharides Is a Feature Specific to Human Breast Milk SO ADVANCES IN NUTRITION LA English DT Article; Proceedings Paper CT 1st International Conference on Glycobiology of Human Milk Oligosaccharides CY MAY 16-17, 2011 CL Copenhagen, DENMARK ID BIFIDOBACTERIUM-LONGUM; HUMAN COLOSTRUM; FED BABIES; LACTATION; SIALYLOLIGOSACCHARIDES; QUANTIFICATION; DERIVATIZATION; CHROMATOGRAPHY; DEGRADATION; SIALYL AB Human milk and colostrum contain similar to 12-13 g/L and similar to 22-24 g/L of oligosaccharides, respectively. The chemical structures of >100 human milk oligosaccharides (HMO) have been characterized to date. We determined the concentrations of 10 neutral and 9 acidic colostrum HMO collected during the first 3 d of lactation by using reverse phase HPLC after derivatization with 2-aminopyridine or 1-methyl-3-phenyl-5-pyrazolon. The predominant oligosaccharides were Fuc(alpha 1-2)Gal(beta 1-4Glc (2'-FL), Fuc(alpha 1-2)Gal(beta 1-3)GlcNAc(beta 1-3)Gal(beta 1-4)Glc (LNFP I), Fuc(alpha 1-2)Gal(beta 1-3)Fuc(alpha 1-4)]GlcNAc(beta 1-3)Gal(beta 1-4)Glc (LNDFH I), and Gal(beta 1-3)GlcNAc(beta 1-3)Gal(beta 1-4)Glc (LNT), the concentration of each of which was similar to 1-3 g/L. Because these HMO, other than 2'-FL, all contain the Lacto-N-biose type I structure [Gal(beta 1-3)GlcNAc], we conclude that HMO containing the type I structure predominate over those containing the N-acetyllactosamine type II structure [Gal(beta 1-4)GlcNAc]. This appears to be a feature that is specific to humans, because the milk and colostrum of other species, including apes and monkeys, either contain only type II oligosaccharides or type II predominate over type I. It is possible that type I HMO may have importance as substrates for beneficial bifidobacteria in breast-fed infants. The biological importance of type I HMO predominance warrants further study, both in relation to human health and to human evolution. Adv. Nutr. 3: 473S-482S, 2012. C1 [Urashima, Tadasu; Fukuda, Kenji] Obihiro Univ Agr & Vet Med, Grad Sch Food Hyg, Obihiro, Hokkaido 080, Japan. [Asakuma, Sadaki] Natl Agr Res Ctr Hokkaido Reg, Sapporo, Hokkaido, Japan. [Messer, Michael] Univ Sydney, Sch Mol & Microbial Biosci, Sydney, NSW 2006, Australia. [Oftedal, Olav T.] Smithsonian Environm Res Ctr, Edgewater, MD 21037 USA. RP Urashima, T (reprint author), Obihiro Univ Agr & Vet Med, Grad Sch Food Hyg, Obihiro, Hokkaido 080, Japan. EM urashima@obihiro.ac.jp NR 42 TC 41 Z9 41 U1 2 U2 20 PU AMER SOC NUTRITION-ASN PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 USA SN 2161-8313 J9 ADV NUTR JI Adv. Nutr. PD MAY PY 2012 VL 3 IS 3 BP 473S EP 482S DI 10.3945/an.111.001412 PG 10 WC Nutrition & Dietetics SC Nutrition & Dietetics GA 066KP UT WOS:000313220000028 PM 22585927 ER PT J AU Ryder, TB Fleischer, RC Shriver, WG Marra, PP AF Ryder, Thomas B. Fleischer, Robert C. Shriver, W. Greg Marra, Peter P. TI The ecological-evolutionary interplay: density-dependent sexual selection in a migratory songbird SO ECOLOGY AND EVOLUTION LA English DT Article DE Density; extra-pair paternity; sexual selection; urbanization ID EXTRA-PAIR PATERNITY; MATING SYSTEMS; GREAT TITS; BODY SIZE; REPRODUCTIVE SUCCESS; AGELAIUS-PHOENICEUS; NATURAL-SELECTION; FEMALE CHOICE; PARUS-MAJOR; DNA MARKERS AB Little is understood about how environmental heterogeneity influences the spatial dynamics of sexual selection. Within human-dominated systems, habitat modification creates environmental heterogeneity that could influence the adaptive value of individual phenotypes. Here, we used the gray catbird to examine if the ecological conditions experienced in the suburban matrix (SM) and embedded suburban parks (SP) influence reproductive strategies and the strength of sexual selection. Our results show that these habitats varied in a key ecological factor, breeding density. Moreover, this ecological factor was closely tied to reproductive strategies such that local breeding density predicted the probability that a nest would contain extra-pair offspring. Partitioning reproductive variance showed that while within-pair success was more important in both habitats, extra-pair success increased the opportunity for sexual selection by 39% at higher breeding densities. Body size was a strong predictor of relative reproductive success and was under directional selection in both habitats. Importantly, our results show that the strength of sexual selection did not differ among habitats at the landscape scale but rather that fine-scale variation in an ecological factor, breeding density, influenced sexual selection on male phenotypes. Here, we document density-dependent sexual selection in a migratory bird and hypothesize that coarse-scale environmental heterogeneity, in this case generated by anthropogenic habitat modification, changed the fine-scale ecological conditions that drove the spatial dynamics of sexual selection. C1 [Ryder, Thomas B.; Marra, Peter P.] Natl Zool Pk, Migratory Bird Ctr, Smithsonian Conservat Biol Inst, Washington, DC 20013 USA. [Fleischer, Robert C.] Natl Zool Pk, Ctr Conservat & Evolutionary Genet, Smithsonian Conservat Biol Inst, Washington, DC 20013 USA. [Shriver, W. Greg] Univ Delaware, Dept Entomol & Wildlife Ecol, Newark, DE 19716 USA. RP Ryder, TB (reprint author), Natl Zool Pk, Migratory Bird Ctr, Smithsonian Conservat Biol Inst, Natl Zool Pk,POB 37012,MRC 5503, Washington, DC 20013 USA. EM rydert@si.edu FU Pedigree; Maryland Ornithological Society FX Funded by the Pedigree and Maryland Ornithological Society. NR 89 TC 13 Z9 14 U1 4 U2 57 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 2045-7758 J9 ECOL EVOL JI Ecol. Evol. PD MAY PY 2012 VL 2 IS 5 BP 976 EP 987 DI 10.1002/ece3.254 PG 12 WC Ecology; Evolutionary Biology SC Environmental Sciences & Ecology; Evolutionary Biology GA 055WE UT WOS:000312447700010 PM 22837842 ER PT J AU De Leon, LF Rolshausen, G Bermingham, E Podos, J Hendry, AP AF De Leon, Luis Fernando Rolshausen, Gregor Bermingham, Eldredge Podos, Jeffrey Hendry, Andrew P. TI Individual specialization and the seeds of adaptive radiation in Darwin's finches SO EVOLUTIONARY ECOLOGY RESEARCH LA English DT Article DE adaptive radiation; Darwin's finches; ecological speciation; Galapagos; individual specialization; intraspecific competition; niche variation ID GALAPAGOS GROUND FINCHES; ECOLOGICAL SPECIATION; DISRUPTIVE SELECTION; NICHE EXPANSION; DIET VARIATION; RESOURCE SPECIALIZATION; SYMPATRIC SPECIATION; NATURAL-POPULATIONS; EXTERNAL MORPHOLOGY; GEOSPIZA-FORTIS AB Background: Empirical and theoretical studies suggest that individual specialization can he an important force in evolutionary diversification. However, few studies of natural populations have explicitly considered the impact of individual specialization on adaptive divergence. Questions: To what extent do individuals within a bimodal Darwin's finch population specialize on different resources? Is this individual specialization likely to enhance adaptive divergence? Field site: El Garrapatero, Santa Cruz Island. Galapagos. Ecuador. Organism: A population of the medium ground finch, Geospiza fortis. showing large - and bimodal - morphological and genetic variation resulting from ecologically based adaptive divergence. Methods: We described the diets of individual G. fortis through feeding observations in the wild. We calculated several indices of individual specialization. We then examined the relationship between individual specialization, adaptive morphological traits (beak and head dimensions), and neutral genetic variation (microsatellites). We also performed a cluster analysis on the basis of individual foraging observations and asked whether the clusters were morphologically and genetically divergent. Results: We found significant levels of individual specialization and expected, but weak, associations between individual diet differences, morphological traits, and neutral genetic variation. The cluster analysis yielded two distinct diet-clusters of individuals that differed in morphological traits but not in neutral genetic markers. In the early stages of adaptive radiation, individual specialization appears to be associated with morphological divergence but not neutral genetic divergence. C1 [Rolshausen, Gregor] INDICASAT AIP, Inst Invest Cient & Serv Alta Tecnol AIP, Panama City 5, Panama. [De Leon, Luis Fernando; Rolshausen, Gregor; Hendry, Andrew P.] McGill Univ, Redpath Museum, Montreal, PQ H3A 2K6, Canada. [De Leon, Luis Fernando; Rolshausen, Gregor; Hendry, Andrew P.] McGill Univ, Dept Biol, Montreal, PQ H3A 1B1, Canada. [De Leon, Luis Fernando; Bermingham, Eldredge] Smithsonian Trop Res Inst, Balboa, Panama. [Podos, Jeffrey] Univ Massachusetts, Dept Biol, Amherst, MA 01003 USA. RP De Leon, LF (reprint author), INDICASAT AIP, Inst Invest Cient & Serv Alta Tecnol AIP, POB 0843-01103, Panama City 5, Panama. EM luis.deleonreyna@gmail.com FU Secretaria Nacional de Ciencia, Tecnologia e Innovacion; Institut par la Formacion y Aprovechamiento de los Recursos Humanos, Panama; US National Science Foundation; Natural Sciences and Engineering Research Council of Canada; Smithsonian Tropical Research Institute FX The Galapagos National Park Service and the Charles Darwin Research Station provided logistical support and permits. E. Hilton, M. Rossi-Santos, D. Ruiz. A. Gabela, P. Kelley, M. Hendry, S. Huber. K. Huyghe, B. Vanhooydonck, and D. Delaney provided field assistance. J. Racymaekers provided useful suggestions for data analysis. D. Sharpe provided useful comments on an earlier version of the manuscript. Funding was provided by the Secretaria Nacional de Ciencia, Tecnologia e Innovacion and the Institut par la Formacion y Aprovechamiento de los Recursos Humanos, Panama (L.F. De Leon); the US National Science Foundation (J. Podos); the Natural Sciences and Engineering Research Council of Canada (A.P. Hendry); and the Smithsonian Tropical Research Institute (E. Bermingham). We thank the associated editor and anonymous reviewers for providing valuable comments on an earlier version of the manuscript. NR 76 TC 4 Z9 4 U1 22 U2 119 PU EVOLUTIONARY ECOLOGY LTD PI TUCSON PA UNIV ARIZONA, 321 BIOSCIENCES WEST, TUCSON, AZ 85721 USA SN 1522-0613 EI 1937-3791 J9 EVOL ECOL RES JI Evol. Ecol. Res. PD MAY PY 2012 VL 14 IS 4 BP 365 EP 380 PG 16 WC Ecology; Evolutionary Biology; Genetics & Heredity SC Environmental Sciences & Ecology; Evolutionary Biology; Genetics & Heredity GA 055JX UT WOS:000312413300002 ER PT J AU Launius, RD Conway, EM Johnston, AK Wang, ZC Hersch, MH Paikowsky, D Whalen, DJ Toldi, E Dougherty, K Hays, PL Levasseur, J McNutt, RL Sherwood, B AF Launius, Roger D. Conway, Erik M. Johnston, Andrew K. Wang, Zse Chien Hersch, Matthew H. Paikowsky, Deganit Whalen, David J. Toldi, Eric Dougherty, Kerrie Hays, Peter L. Levasseur, Jennifer McNutt, Ralph L., Jr. Sherwood, Brent TI Spaceflight: The Development of Science, Surveillance, and Commerce in Space SO PROCEEDINGS OF THE IEEE LA English DT Article DE Cold War; communications satellites; earth science; human presence in space; lunar science; national security; navigation and positioning; remote sensing; solar science; solar system; spaceflight ID OUTER SOLAR-SYSTEM AB To commemorate the centennial of the PROCEEDINGS OF THE IEEE, several authors from diverse areas of expertise examine space exploration from its beginnings in the middle of the last century and look onward to half a century in the future. Beginning by examining the reasons why the two 20th century superpowers believed that space exploration was an important investment, the chronological review of early developments includes discussions on science, commerce, and national security; the evolution of space-related technologies; progress and advancements in launch vehicles, spacecraft, and spacecraft payloads; and improvements in space communications and tracking. With the subjects of robotic solar system exploration and crewed missions to space discussed in some detail, the great advances of the last 60 years establish a foundation for addressing the challenges of future human flight beyond Earth's vicinity-challenges that are technical, political, social, and economic in nature. The authors take a pragmatic view in making forecasts for the future of spaceflight: they limit their conjecture, for the most part, to the next 50 years. While it is very difficult to make realistic predictions for longer periods, the authors are confident that space exploration continues to grasp the public's imagination and desire to know more about the universe, and that it continues to build on many of the same questions that inspired the space program in the mid-20th century. C1 [Launius, Roger D.; Johnston, Andrew K.] Smithsonian Inst, Natl Air & Space Museum, Ctr Earth & Planetary Studies, Washington, DC 20013 USA. [Sherwood, Brent] CALTECH, Jet Prop Lab, Innovat Foundry, Pasadena, CA 91109 USA. [Hersch, Matthew H.] Univ Penn, Philadelphia, PA 19104 USA. [Paikowsky, Deganit] Tel Aviv Univ, IL-69978 Tel Aviv, Israel. [Whalen, David J.] Univ N Dakota, Dept Space Studies, Grand Forks, ND 58202 USA. [Dougherty, Kerrie] Powerhouse Museum, Sydney, NSW 1238, Australia. [Hays, Peter L.] SAIC Inc, Washington, DC 20005 USA. [McNutt, Ralph L., Jr.] Johns Hopkins Univ, Appl Phys Lab, Dept Space, Laurel, MD 20723 USA. RP Launius, RD (reprint author), Smithsonian Inst, Natl Air & Space Museum, Ctr Earth & Planetary Studies, Washington, DC 20013 USA. EM LauniusR@si.edu RI McNutt, Ralph/E-8006-2010 OI McNutt, Ralph/0000-0002-4722-9166 FU National Aeronautics and Space Administration FX This paper was prepared in part with the support of the National Aeronautics and Space Administration. NR 69 TC 3 Z9 3 U1 1 U2 5 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0018-9219 J9 P IEEE JI Proc. IEEE PD MAY PY 2012 VL 100 SI SI BP 1785 EP 1818 DI 10.1109/JPROC.2012.2187143 PG 34 WC Engineering, Electrical & Electronic SC Engineering GA 020TR UT WOS:000309838000061 ER PT J AU Catlos, E Jacob, L Oyman, T Sorensen, S AF Catlos, Elizabeth Jacob, Lauren Oyman, Tolga Sorensen, Sorena TI LONG-TERM EXHUMATION OF AN AEGEAN METAMORPHIC CORE COMPLEX GRANITOIDS IN THE NORTHERN MENDERES MASSIF, WESTERN TURKEY SO AMERICAN JOURNAL OF SCIENCE LA English DT Article DE Zircon geochronology; cathodoluminescence; Menderes Massif; granitoid; western Turkey; subduction ID U-TH-PB; EASTERN MEDITERRANEAN REGION; HELLENIC SUBDUCTION ZONE; EXTENSIONAL TECTONICS; ANATOLIDE BELT; TRACE-ELEMENT; GEOCHEMICAL CLASSIFICATION; CONTINENTAL EXTENSION; NORTHWESTERN ANATOLIA; TERTIARY EXTENSION AB The Egrigoz, Koyunoba, and Alacam plutons are located in the northern portion of the Menderes Massif, a region characterized today by large-scale extension. To gain a better understanding of their exhumation history, we acquired zircon ages, geochemical analyses, and cathodoluminescence (CL) images to search for evidence of micro- to macro-scales of deformation. The combination is a powerful means to decipher their tectonomagmatic history. In situ ion microprobe U-238/Pb-206 zircon ages of the granitoids range from 30.0 +/- 3.9 Ma to 14.7 +/- 2.6 Ma (+/-1 sigma) and indicate the plutons crystallized over similar to 15 m.y. The dated zircons show CL zoning consistent with igneous crystallization and are only located adjacent to or as inclusions in biotite grains The youngest ages are dominated by a blue color in CL, whereas a majority of older zircons are yellow. Higher Th/U contents are typically shown by zircons with black or dark green colors in CL. Most of the samples of these granitoids indicate they are magnesian, calc-alkalic and peraluminous granite to granodiorites, but variations exist, likely reflecting heterogeneity caused by magma mixing, partial melting, crustal contamination, and post-emplacement fluid interactions as evidenced by the CL images. CL images show that all samples experienced magma mixing, multiple episodes of brittle deformation, and fluid-mediated alteration. Sources for the generation of Northern Menderes Massif granitoids include simple slab induced upwelling from the subduction of the African plate along the Hellenic arc, adiabatic decompression as the northern edge of Turkey's Anatolide-Tauride block delaminates, and upwelling asthenosphere as the continental lithosphere thins during extension. We present a model in which western Turkey is an amalgamation of stacked subduction zones that transition from north to south over time. Northern Menderes Massif granitoids document their complex geologic history in their ages, chemistry, and textures. C1 [Catlos, Elizabeth] Univ Texas Austin, Dept Geol Sci, Austin, TX 78712 USA. [Jacob, Lauren] Apache Corp, Houston, TX 77056 USA. [Oyman, Tolga] Dokuz Eylul Univ, Fac Engn, Dept Geol Engn, TR-35160 Izmir, Turkey. [Sorensen, Sorena] Smithsonian Inst, Dept Mineral Sci, Washington, DC 20013 USA. RP Catlos, E (reprint author), Univ Texas Austin, Dept Geol Sci, 1 Univ Stn C1100, Austin, TX 78712 USA. EM ejcatlos@gmail.com RI Catlos, Elizabeth/B-7943-2011; OI Oyman, Tolga/0000-0003-2132-2511 FU National Science Foundation [0937254]; Jackson School of Geosciences; Smithsonian Institution's National Museum of Natural History Fellowship program FX This material is based upon work supported by the National Science Foundation under Grant No. 0937254. Additional funding was provided by the Jackson School of Geosciences. Samples were obtained with the help of Drs. Yasar Kibici, Ibrahim Cemen, and Mehmet Demirbilek and students Okan Yildiz, Ozge Karaman, and Esra Yalcin. Comments from Drs. Mark Cloos, Dan Barker, Stuart Thomson, and Seth Kruckenberg, greatly improved the original manuscript. The authors thank the UCLA National Ion Microprobe Facility (particularly Drs. Rita Economos and Axel Schmitt), which is partially supported by funding from the National Science Foundation's Instrumentation and Facilities Program. Ages were obtained with the help of Jackson School students Kathryn Huber and Tim Shin. Thin section scale CL imagery was generated with the support of the Smithsonian Institution's National Museum of Natural History Fellowship program. Some figures were drafted with the assistance of Karen Black. NR 129 TC 5 Z9 5 U1 2 U2 11 PU AMER JOURNAL SCIENCE PI NEW HAVEN PA YALE UNIV, PO BOX 208109, NEW HAVEN, CT 06520-8109 USA SN 0002-9599 EI 1945-452X J9 AM J SCI JI Am. J. Sci. PD MAY PY 2012 VL 312 IS 5 BP 534 EP 571 DI 10.2475/05.2012.03 PG 38 WC Geosciences, Multidisciplinary SC Geology GA 990II UT WOS:000307623800003 ER PT J AU Rondeau, B Cenki-Tok, B Fritsch, E Mazzero, F Gauthier, JP Bodeur, Y Bekele, E Gaillou, E Ayalew, D AF Rondeau, Benjamin Cenki-Tok, Benedicte Fritsch, Emmanuel Mazzero, Francesco Gauthier, Jean-Pierre Bodeur, Yves Bekele, Eyassu Gaillou, Eloise Ayalew, Dereje TI Geochemical and petrological characterization of gem opals from Wegel Tena, Wollo, Ethiopia: opal formation in an Oligocene soil SO GEOCHEMISTRY-EXPLORATION ENVIRONMENT ANALYSIS LA English DT Article DE opal formation; Ethiopia; pedogenesis; plant fossils; chemical impurities ID NEUTRON-ACTIVATION ANALYSIS; OF-COLOR OPAL; TRACE-ELEMENTS; ICP-MS; FELDSPAR; URANIUM; EARTH AB Gem opals from Wegel Tena, Wollo Province, Ethiopia, occur in Oligocene rhyolitic ignimbrites. They display a unique geochemistry, with some samples yielding the highest Ba concentrations ever recorded. They are generally much richer in chemical impurities than opals from other localities. For example, the sum Al+Fe or the sum Na+Mg+Ca+K+Ba are often higher. These geochemical features make them easy to distinguish from other opals worldwide. We observed strong geochemical variations and some good positive correlations in our samples, such as Al+Fe vs. Na+Mg+Ca+K+Ba, Al vs Ca, or Ba vs Ca. This shows that the crystallography of opal has controlled, at least in part, the incorporation of chemical impurities, although opal is not well-crystallized. In addition, the multimodal distributions of several chemical impurities (e.g. U vs Sr, Al vs Ca, Ba vs Ca, etc.) suggest at least two origins of silica: weathering of feldspars and weathering of volcanic glass. In addition, opals from Wegel Tena contain numerous well-preserved microscopic plant fossils. Moreover, their host rock exhibits features typical of pedogenesis (abundant clays, desiccation cracks, and grain size sorting). We propose that the opals at Wegel Tena formed during the Oligocene period when volcanic emissions stopped for a time long enough to allow weathering of ingimbrites and therefore liberation of silica. This accompanied the formation of soil and development of plant life, and some plants were trapped in opal. C1 [Rondeau, Benjamin; Bodeur, Yves] Univ Nantes, Lab Planetol & Geodynam, UMR CNRS 6112, F-44322 Nantes 3, France. [Cenki-Tok, Benedicte] Univ Bern, Inst Geol, CH-3012 Bern, Switzerland. [Fritsch, Emmanuel] Univ Nantes, Inst Mat Jean Rouxel, UMR CNRS 6205, F-44322 Nantes 3, France. [Mazzero, Francesco] Opalinda, F-75002 Paris, France. [Gauthier, Jean-Pierre] Ctr Rech Gemmol, F-44322 Nantes 3, France. [Bekele, Eyassu] Eyaopal, Addis Ababa, Ethiopia. [Gaillou, Eloise] Smithsonian Inst, Dept Mineral Sci, Washington, DC 20560 USA. [Ayalew, Dereje] Univ Addis Ababa, Dept Earth Sci, Addis Ababa, Ethiopia. RP Rondeau, B (reprint author), Univ Nantes, Lab Planetol & Geodynam, UMR CNRS 6112, 2 Rue Houssiniere,BP 92208, F-44322 Nantes 3, France. EM benjamin.rondeau@univ-nantes.fr RI Gaillou, Eloise/D-1753-2009 OI Gaillou, Eloise/0000-0002-7949-268X FU Swiss National Fond [200021-103479/1] FX BCT thanks T. Pettke for assistance during LA-ICP-MS analyses. The electron microprobe at the University of Bern is partly funded by the Swiss National Fond (Grant 200021-103479/1). SEM maps were acquired thanks to the help of Nicolas Stephant and Stephane Grolleau, IMN. We thank Thomas Cenki for collecting the samples studied here. We thank Antoine Bezos for constructive discussions on the interpretation of chemical analyses. This article has been considerably strengthened and clarified, thanks to Alan Pring, Lee Groat and John Carranza who reviewed it. NR 31 TC 2 Z9 2 U1 5 U2 13 PU GEOLOGICAL SOC PUBL HOUSE PI BATH PA UNIT 7, BRASSMILL ENTERPRISE CENTRE, BRASSMILL LANE, BATH BA1 3JN, AVON, ENGLAND SN 1467-7873 J9 GEOCHEM-EXPLOR ENV A JI Geochem.-Explor. Environ. Anal. PD MAY PY 2012 VL 12 IS 2 BP 93 EP 104 DI 10.1144/1467-7873/10-MINDEP-058 PG 12 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 983KU UT WOS:000307119000002 ER PT J AU Hinson, DP Wang, HQ Smith, MD AF Hinson, David P. Wang, Huiqun Smith, Michael D. TI A multi-year survey of dynamics near the surface in the northern hemisphere of Mars: Short-period baroclinic waves and dust storms SO ICARUS LA English DT Article DE Mars, Atmosphere; Mars, Climate; Atmospheres, Dynamics; Meteorology ID ASYNOPTIC SATELLITE-OBSERVATIONS; WESTERN BOUNDARY CURRENTS; TES NADIR DATA; MARTIAN ATMOSPHERE; GLOBAL SURVEYOR; SPECTRAL-ANALYSIS; ORBITER CAMERA; THERMAL TIDES; MGS TES; INTERANNUAL VARIABILITY AB Baroclinic waves figure prominently in the dynamics of the northern hemisphere of Mars, and extensive observations by the Viking Landers and two atmospheric sounders on Mars Global Surveyor have revealed many of their basic properties. However, previous investigations considered these data sets individually, so that their cumulative value is not fully appreciated. We have re-examined these data to extract new information about the dynamics near the surface at mid-to-high northern latitudes. By applying the same method of spectral analysis to each type of observation, we derive a uniform, multi-year characterization of basic elements of martian weather. This survey documents the time evolution of baroclinic waves among modes with different periods and zonal wave numbers. We devote particular attention to a recurring "wave-3 mode", which is distinguished by its capacity to initiate regional dust storms in the topographic basins of the northern hemisphere. Our results include a detailed case study that shows how the intermittence of this mode and the strong zonal modulation of its amplitude influence the timing and location of these distinctive "flushing" dust storms. More generally, we find that the properties of the wave-3 mode are largely the same whenever it appears and that its intermittence plays an important role in the annual dust cycle. (c) 2012 Elsevier Inc. All rights reserved. C1 [Hinson, David P.] SETI Inst, Carl Sagan Ctr, Mountain View, CA 94043 USA. [Hinson, David P.] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA. [Wang, Huiqun] Smithsonian Astrophys Observ, Atom & Mol Phys Div, Cambridge, MA 02138 USA. [Smith, Michael D.] NASA, Planetary Syst Lab, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. RP Hinson, DP (reprint author), SETI Inst, Carl Sagan Ctr, 189 Bernardo Ave, Mountain View, CA 94043 USA. EM dhinson@seti.org FU NASA of the Mars Data Analysis Program [NNX08AL24G] FX Funding for this research was provided by NASA under Grant NNX08AL24G (Hinson) of the Mars Data Analysis Program. NR 54 TC 11 Z9 11 U1 1 U2 10 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0019-1035 J9 ICARUS JI Icarus PD MAY PY 2012 VL 219 IS 1 BP 307 EP 320 DI 10.1016/j.icarus.2012.03.001 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 975WA UT WOS:000306541000029 ER PT J AU McGuire, KL Fierer, N Bateman, C Treseder, KK Turner, BL AF McGuire, Krista L. Fierer, Noah Bateman, Carling Treseder, Kathleen K. Turner, Benjamin L. TI Fungal Community Composition in Neotropical Rain Forests: the Influence of Tree Diversity and Precipitation SO MICROBIAL ECOLOGY LA English DT Article ID SOIL MICROBIAL COMMUNITIES; LITTER DECOMPOSITION; ECOSYSTEM FUNCTION; MYCORRHIZAL FUNGI; TROPICAL FORESTS; DISTRIBUTIONAL PATTERNS; ENVIRONMENTAL-SAMPLES; SPECIES-DIVERSITY; PLANT DIVERSITY; BOREAL FOREST AB Plant diversity is considered one factor structuring soil fungal communities because the diversity of compounds in leaf litter might determine the extent of resource heterogeneity for decomposer communities. Lowland tropical rain forests have the highest plant diversity per area of any biome. Since fungi are responsible for much of the decomposition occurring in forest soils, understanding the factors that structure fungi in tropical forests may provide valuable insight for predicting changes in global carbon and nitrogen fluxes. To test the role of plant diversity in shaping fungal community structure and function, soil (0-20 cm) and leaf litter (O horizons) were collected from six established 1-ha forest census plots across a natural plant diversity gradient on the Isthmus of Panama. We used 454 pyrosequencing and phospholipid fatty acid analysis to evaluate correlations between microbial community composition, precipitation, soil nutrients, and plant richness. In soil, the number of fungal taxa increased significantly with increasing mean annual precipitation, but not with plant richness. There were no correlations between fungal communities in leaf litter and plant diversity or precipitation, and fungal communities were found to be compositionally distinct between soil and leaf litter. To directly test for effects of plant species richness on fungal diversity and function, we experimentally re-created litter diversity gradients in litter bags with 1, 25, and 50 species of litter. After 6 months, we found a significant effect of litter diversity on decomposition rate between one and 25 species of leaf litter. However, fungal richness did not track plant species richness. Although studies in a broader range of sites is required, these results suggest that precipitation may be a more important factor than plant diversity or soil nutrient status in structuring tropical forest soil fungal communities. C1 [McGuire, Krista L.; Bateman, Carling] Columbia Univ, Barnard Coll, New York, NY 10027 USA. [Fierer, Noah] Univ Colorado, Boulder, CO 80309 USA. [Treseder, Kathleen K.] Univ Calif Irvine, Irvine, CA USA. [Turner, Benjamin L.] Smithsonian Trop Res Inst, Balboa, Ancon, Panama. RP McGuire, KL (reprint author), Columbia Univ, Barnard Coll, 3009 Broadway, New York, NY 10027 USA. EM kmcguire@barnard.columbia.edu; noah.fierer@colorado.edu; carling.bateman@gmail.com; treseder@uci.edu; turnerbl@si.edu RI Turner, Benjamin/E-5940-2011; Treseder, Kathleen/E-5148-2011 OI Turner, Benjamin/0000-0002-6585-0722; FU NSF Ecosystems [DEB-0640666]; Kearney Foundation FX We thank Joe Wright and Osvaldo Calderon for collection and identification of all litter species in the decomposition experiment. Collecting and export permits were granted from the Autoridad Nacional del Ambiente of Panama. Jenny Talbot and Angela Nguyen assisted with C and N measurements, and Steve Allison and Donovan German helped with extracellular enzyme assays and data interpretation. We also thank two anonymous reviewers for helping to improve the quality and clarity of the manuscript. This work was funded by NSF Ecosystems (DEB-0640666) and the Kearney Foundation. NR 61 TC 42 Z9 43 U1 9 U2 120 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0095-3628 J9 MICROB ECOL JI Microb. Ecol. PD MAY PY 2012 VL 63 IS 4 BP 804 EP 812 DI 10.1007/s00248-011-9973-x PG 9 WC Ecology; Marine & Freshwater Biology; Microbiology SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Microbiology GA 970KM UT WOS:000306127300010 PM 22080256 ER PT J AU Schiffbauer, JD Laflamme, M AF Schiffbauer, James D. Laflamme, Marc TI LAGERSTATTEN THROUGH TIME: A COLLECTION OF EXCEPTIONAL PRESERVATIONAL PATHWAYS FROM THE TERMINAL NEOPROTEROZOIC THROUGH TODAY SO PALAIOS LA English DT Editorial Material ID BURGESS SHALE-TYPE; EDIACARAN ANIMAL EMBRYOS; SOFT-TISSUE PRESERVATION; ENCYSTING PROTISTS; FOSSILIZED NUCLEI; CLAY-MINERALS; SOUTH CHINA; 1ST FINDS; ORIGIN; ORDOVICIAN C1 [Schiffbauer, James D.] Virginia Tech, Inst Crit Technol & Appl Sci, Nanoscale Characterizat & Fabricat Lab, Blacksburg, VA 24061 USA. [Schiffbauer, James D.] Virginia Tech, Dept Geosci, Blacksburg, VA 24061 USA. [Laflamme, Marc] Natl Museum Nat Hist, Dept Paleobiol, Smithsonian Inst, Washington, DC 20013 USA. RP Schiffbauer, JD (reprint author), Virginia Tech, Inst Crit Technol & Appl Sci, Nanoscale Characterizat & Fabricat Lab, 1991 Kraft Dr, Blacksburg, VA 24061 USA. EM jdschiff@vt.edu; LaflammeM@si.edu NR 45 TC 8 Z9 8 U1 2 U2 24 PU SEPM-SOC SEDIMENTARY GEOLOGY PI TULSA PA 6128 EAST 38TH ST, STE 308, TULSA, OK 74135-5814 USA SN 0883-1351 EI 1938-5323 J9 PALAIOS JI Palaios PD MAY-JUN PY 2012 VL 27 IS 5-6 BP 275 EP 278 DI 10.2110/palo.2012.SO3 PG 4 WC Geology; Paleontology SC Geology; Paleontology GA 972UB UT WOS:000306304900001 ER PT J AU Cardoso, P Borges, PAV Triantis, KA Ferrandez, MA Martin, JL AF Cardoso, Pedro Borges, Paulo A. V. Triantis, Kostas A. Ferrandez, Miguel A. Martin, Jose L. TI The underrepresentation and misrepresentation of invertebrates in the IUCN Red List SO BIOLOGICAL CONSERVATION LA English DT Letter C1 [Cardoso, Pedro; Borges, Paulo A. V.; Triantis, Kostas A.] Univ Acores, Azorean Biodivers Grp CITA A, P-9700042 Angra Do Heroismo, Portugal. [Cardoso, Pedro] Natl Museum Nat Hist, Smithsonian Inst, Washington, DC 20560 USA. [Triantis, Kostas A.] Univ Athens, Dept Ecol & Taxon, Fac Biol, Athens 11528, Greece. [Ferrandez, Miguel A.] Soc Study & Conservat Spiders, Madrid, Spain. [Martin, Jose L.] Canary Agcy Sustainable Dev & Climate Change, Santa Cruz De Tenerife, Canary Islands, Spain. RP Cardoso, P (reprint author), Univ Acores, Azorean Biodivers Grp CITA A, Rua Capitao Joao dAvila, P-9700042 Angra Do Heroismo, Portugal. EM pcardoso@ennor.org RI Borges, Paulo/B-2780-2008; Cardoso, Pedro/A-8820-2008 OI Borges, Paulo/0000-0002-8448-7623; Cardoso, Pedro/0000-0001-8119-9960 NR 3 TC 10 Z9 12 U1 1 U2 27 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0006-3207 J9 BIOL CONSERV JI Biol. Conserv. PD MAY PY 2012 VL 149 IS 1 BP 147 EP 148 DI 10.1016/j.biocon.2012.02.011 PG 2 WC Biodiversity Conservation; Ecology; Environmental Sciences SC Biodiversity & Conservation; Environmental Sciences & Ecology GA 964UY UT WOS:000305723400019 ER PT J AU Shlaer, B Vilenkin, A Loeb, A AF Shlaer, Benjamin Vilenkin, Alexander Loeb, Abraham TI Early structure formation from cosmic string loops SO JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS LA English DT Article DE reionization; Cosmic strings; domain walls; monopoles; first stars; high redshift galaxies ID MICROWAVE-ANISOTROPY; REIONIZATION EPOCH; VACUUM STRINGS; EVOLUTION; RADIATION; UNIVERSE; DENSITY AB We examine the effects of cosmic strings on structure formation and on the ionization history of the universe. While Gaussian perturbations from inflation are known to provide the dominant contribution to the large scale structure of the universe, density perturbations due to strings are highly non-Gaussian and can produce nonlinear structures at very early times. This could lead to early star formation and reionization of the universe. We improve on earlier studies of these effects by accounting for high loop velocities and for the filamentary shape of the resulting halos. We find that for string energy scales G mu greater than or similar to 10(-7), the effect of strings on the CMB temperature and polarization power spectra can be significant and is likely to be detectable by the Planck satellite. We mention shortcomings of the standard cosmological model of galaxy formation which may be remedied with the addition of cosmic strings, and comment on other possible observational implications of early structure formation by strings. C1 [Shlaer, Benjamin; Vilenkin, Alexander] Tufts Univ, Dept Phys & Astron, Inst Cosmol, Medford, MA 02155 USA. [Loeb, Abraham] Harvard Smithsonian Ctr Astrophys, Inst Theoret & Comp, Cambridge, MA 02138 USA. RP Shlaer, B (reprint author), Tufts Univ, Dept Phys & Astron, Inst Cosmol, 212 Coll Ave, Medford, MA 02155 USA. EM shlaer@cosmos.phy.tufts.edu; vilenkin@cosmos.phy.tufts.edu; aoeb@cfa.harvard.edu FU NSF [AST-0907890, PHY-0855447]; NASA [NNX08AL43G, NNA09DB30A] FX We thank Ken Olum and Xavier Siemens for helpful discussions. AL was supported in part by NSF grant AST-0907890 and NASA grants NNX08AL43G and NNA09DB30A. BS and AV were supported by NSF grant PHY-0855447. We made use of the CAMB software package to generate the matter power spectrum and CMB angular power spectra. NR 81 TC 12 Z9 12 U1 0 U2 11 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 1475-7516 J9 J COSMOL ASTROPART P JI J. Cosmol. Astropart. Phys. PD MAY PY 2012 IS 5 AR 026 DI 10.1088/1475-7516/2012/05/026 PG 29 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 960UA UT WOS:000305415200027 ER PT J AU Alemseged, Z Kiura, PW Mbua, E Njau, J Pobiner, B AF Alemseged, Zeresenay Kiura, Purity W. Mbua, Emma Njau, Jackson Pobiner, Briana TI A platform for East African paleoanthropology: Third biannual conference of the EAAPP SO EVOLUTIONARY ANTHROPOLOGY LA English DT News Item C1 [Alemseged, Zeresenay] Calif Acad Sci, Dept Anthropol, San Francisco, CA 94118 USA. [Kiura, Purity W.] Natl Museums Kenya, Archaeol Sect, Nairobi, Kenya. [Mbua, Emma] Natl Museums Kenya, Dept Earth Sci, Nairobi, Kenya. [Njau, Jackson] Indiana Univ, Dept Geol Sci, Bloomington, IN 47405 USA. [Pobiner, Briana] Smithsonian Inst, MRC 112, Washington, DC 20013 USA. RP Alemseged, Z (reprint author), Calif Acad Sci, Dept Anthropol, 55 Mus Concourse Dr, San Francisco, CA 94118 USA. EM zeray@calacademy.org NR 2 TC 0 Z9 0 U1 0 U2 1 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1060-1538 J9 EVOL ANTHROPOL JI Evol. Anthropol. PD MAY-JUN PY 2012 VL 21 IS 3 BP 89 EP 91 DI 10.1002/evan.21309 PG 3 WC Anthropology SC Anthropology GA 962AN UT WOS:000305511500002 PM 22900270 ER PT J AU Onofrio, R AF Onofrio, Roberto TI Gravitational vacuum polarization phenomena due to the Higgs field SO EUROPEAN PHYSICAL JOURNAL C LA English DT Article ID EQUIVALENCE PRINCIPLE; BEAM-BALANCE; CASIMIR FORCE; DIMENSIONS; MILLIMETER; RESEARCHES AB In the standard model the mass of elementary particles is considered as a dynamical property emerging from their interaction with the Higgs field. We show that this assumption implies peculiar deviations from the law of universal gravitation in its distance and mass dependence, as well as from the superposition principle. The experimental observation of the predicted deviations from the law of universal gravitation seems out of reach. However, we argue that a new class of experiments aimed at studying the influence of surrounding masses on the gravitational force-similar to the ones performed by Quirino Majorana almost a century ago-could be performed to test the superposition principle and to give direct limits on the presence of nonminimal couplings between the Higgs field and the spacetime curvature. From the conceptual viewpoint, the violation of the superposition principle for gravitational forces due to the Higgs field creates a conflict with the notion that gravitational potentials, as assumed in Newtonian gravitation or in post-Newtonian parameterizations of metric theories, are well-defined concepts to describe gravity in their non-relativistic limit. C1 [Onofrio, Roberto] Univ Padua, Dipartimento Fis & Astron Galileo Galilei, I-35131 Padua, Italy. [Onofrio, Roberto] Harvard Smithsonian Ctr Astrophys, ITAMP, Cambridge, MA 02138 USA. RP Onofrio, R (reprint author), Univ Padua, Dipartimento Fis & Astron Galileo Galilei, Via Marzolo 8, I-35131 Padua, Italy. EM onofrior@gmail.com NR 45 TC 6 Z9 6 U1 0 U2 7 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6044 J9 EUR PHYS J C JI Eur. Phys. J. C PD MAY PY 2012 VL 72 IS 5 AR 2006 DI 10.1140/epjc/s10052-012-2006-1 PG 8 WC Physics, Particles & Fields SC Physics GA 952GG UT WOS:000304778800019 ER PT J AU Jenks, KE Kitamura, S Lynam, AJ Ngoprasert, D Chutipong, W Steinmetz, R Sukmasuang, R Grassman, LI Cutter, P Tantipisanuh, N Bhumpakphan, N Gale, GA Reed, DH Leimgruber, P Songsasen, N AF Jenks, Kate E. Kitamura, Shumpei Lynam, Antony J. Ngoprasert, Dusit Chutipong, Wanlop Steinmetz, Robert Sukmasuang, Ronglarp Grassman, Lon I., Jr. Cutter, Passanan Tantipisanuh, Naruemon Bhumpakphan, Naris Gale, George A. Reed, David H. Leimgruber, Peter Songsasen, Nucharin TI Mapping the distribution of dholes, Cuon alpinus (Canidae, Carnivora), in Thailand SO MAMMALIA LA English DT Article DE Cuon alpinus; MaxEnt; maximum entropy modeling; Southeast Asia; species distribution modeling ID SPECIES DISTRIBUTIONS; SPATIAL ECOLOGY; CONSERVATION; PREDICTION; PREDATION; WILDLIFE; INDIA; CATS AB No recent attempt has been made to survey dhole distribution, or to estimate remaining population numbers. We surveyed 15 protected areas in Thailand with camera traps from 1996 to 2010. We used the photo locations of dholes (n = 96) in the maximum entropy (MaxEnt) model along with six environmental variables to model current dhole distribution, as well as species predictive occurrence layers for sambar, red muntjac, wild boar, tiger, and leopard. The MaxEnt model identified the predicted probability of the presence of leopards and sambar as positive and the most important variables in modeling dhole presence, indicating that maintaining a sufficient prey base may be the most important factor determining continued survival of dholes. Roughly 7% of the total land area in Thailand is potentially suitable for dholes. However, surveys to date have focused on protected areas, which make up just a third of the potential suitable areas for dholes. Only in four protected areas do they occur across the entire landscape, suggesting that in the majority of places where they occur, habitats are not uniformly suitable. Using the model, we identified several potential areas where dholes have not been reported, and therefore status surveys are needed, and where future research of the species might be focused. C1 [Jenks, Kate E.] Univ Massachusetts, Grad Program Organism & Evolutionary Biol, Amherst, MA 01003 USA. [Jenks, Kate E.] Univ Massachusetts, Grad Program Wildlife & Fisheries Conservat, Amherst, MA 01003 USA. [Jenks, Kate E.; Leimgruber, Peter; Songsasen, Nucharin] Natl Zool Pk, Smithsonian Conservat Biol Inst, Front Royal, VA 22630 USA. [Kitamura, Shumpei] Museum Nat & Human Activ, Sanda, Hyogo 6691546, Japan. [Lynam, Antony J.] Global Conservat Program, Wildlife Conservat Soc, Bronx, NY 10540 USA. [Ngoprasert, Dusit; Chutipong, Wanlop; Tantipisanuh, Naruemon; Gale, George A.] King Mongkuts Univ Technol Thonburi, Sch Bioresources & Technol, Conservat Ecol Program, Bangkok 10140, Thailand. [Steinmetz, Robert] World Wildlife Fund Nat Thailand, Bangkok 10900, Thailand. [Sukmasuang, Ronglarp; Bhumpakphan, Naris] Kasetsart Univ, Fac Forestry, Dept Forest Biol, Bangkok 10900, Thailand. [Grassman, Lon I., Jr.] Texas A&M Univ, Caesar Kleberg Wildlife Res Inst, Feline Res Ctr, Kingsville, TX 78363 USA. [Cutter, Passanan] Univ Minnesota, Conservat Biol Program, St Paul, MN 55108 USA. [Reed, David H.] Univ Louisville, Dept Biol, Louisville, KY 40292 USA. RP Jenks, KE (reprint author), Univ Massachusetts, Grad Program Organism & Evolutionary Biol, 611 N Pleasant St, Amherst, MA 01003 USA. EM kate@katejenks.info RI Leimgruber, Peter/O-1304-2015; OI Leimgruber, Peter/0000-0002-3682-0153; Lynam, Antony/0000-0002-8395-7902 FU Clouded Leopard Project; TRF/BIOTEC; Kasetsart University; Smithsonian Conservation Biology Institute; Wildlife Conservation Society Thailand; World Wide Fund for Nature - Thailand; Smithsonian Institution; National Science Foundation; Association of Zoos and Aquariums Conservation Endowment; Smithsonian Endowment Fund; Mahidol University; National Center for Genetic Engineering and Biotechnology; Hornbill Research Foundation; JSPS FX This paper is dedicated to the memory of David H. Reed. We wish to thank the Clouded Leopard Project, TRF/BIOTEC Special Program for Biodiversity Research and Training Thailand, Kasetsart University, and the Smithsonian Conservation Biology Institute for providing funding for the initial conference that brought all the authors together to discuss collaboration. We are grateful to the following institutions for allowing us to use data collected under their auspices: the Wildlife Conservation Society Thailand, World Wide Fund for Nature - Thailand, and Smithsonian Institution. K. Jenks was supported by a National Science Foundation Graduate Research Fellowship, Association of Zoos and Aquariums Conservation Endowment Fund, and a Smithsonian Endowment Fund. S. Kitamura was funded by the Mahidol University Government Research Grant, the National Center for Genetic Engineering and Biotechnology, the Hornbill Research Foundation, and a JSPS Research Fellowship. We thank J.W. Duckworth and A. Wilting for their kind assistance in identifying the carnivores in our data set. T. K. Fuller and two anonymous reviewers provided helpful comments on earlier drafts of the manuscript. NR 47 TC 8 Z9 10 U1 4 U2 57 PU WALTER DE GRUYTER & CO PI BERLIN PA GENTHINER STRASSE 13, D-10785 BERLIN, GERMANY SN 0025-1461 J9 MAMMALIA JI Mammalia PD MAY PY 2012 VL 76 IS 2 BP 175 EP 184 DI 10.1515/mammalia-2011-0063 PG 10 WC Zoology SC Zoology GA 957BV UT WOS:000305134500007 ER PT J AU Kallal, RJ Godfrey, SJ Ortner, DJ AF Kallal, R. J. Godfrey, S. J. Ortner, D. J. TI Bone Reactions on a Pliocene Cetacean Rib Indicate Short-Term Survival of Predation Event SO INTERNATIONAL JOURNAL OF OSTEOARCHAEOLOGY LA English DT Article DE whale; neogene; lesions; periosteal reaction; trophic interaction ID WHITE SHARK CARCHARODON; MARINE MAMMALS; SPERM-WHALES; ATTACK; LAMNIDAE; BEHAVIOR; DOLPHIN; MARKS; PERU AB There is little osteological evidence of non-lethal predation events in the archaeological or vertebrate paleontological record. A small section of Pliocene cetacean rib collected from the Yorktown Formation within the PCS Phosphate Mine (formerly Lee Creek Mine), Aurora, North Carolina, U.S.A., shows evidence of this kind of trophic interaction. In this case study, we offer a diagnosis of bone traumatic pathology in which three bone-forming lesions on the partial rib are interpreted as the reaction to a bite inflicted by a macro-predator, the first such report from a marine environment. In addition to the three well-defined lesions, a thin layer of woven bone covers much of the remaining cortical bone. The combination of the three bone-forming lesions and the thin layer of woven bone suggest the presence of an inflammatory process almost certainly caused by infection secondary to the trauma. Survival following the traumatic event was probably less than 6 weeks. The Neogene chondrichthyan fauna from this locality preserves several large predators, including Carcharocles megalodon, Carcharodon carcharias, Isurus xiphidon and Parotodus benedeni, which were all capable, at least in terms of their size, of having bitten the cetacean. Although most of the odontocetes known from the Yorktown Formation were too small to have inflicted this wound, some of the physeterids may have been large enough to have caused the lesions on the partial rib. This evidence of predation in Pliocene whale bone raises the possibility of similar lesions being found in whale bone recovered from archaeological sites. Copyright (c) 2010 John Wiley & Sons, Ltd. C1 [Kallal, R. J.; Godfrey, S. J.] Calvert Marine Museum, Dept Paleontol, Solomons, MD 20688 USA. [Ortner, D. J.] Smithsonian Inst, Natl Museum Nat Hist, Dept Anthropol, Washington, DC 20013 USA. RP Godfrey, SJ (reprint author), Calvert Marine Museum, Dept Paleontol, POB 97, Solomons, MD 20688 USA. EM Godfresj@co.cal.md.us NR 51 TC 3 Z9 3 U1 1 U2 15 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1047-482X EI 1099-1212 J9 INT J OSTEOARCHAEOL JI Int. J. Osteoarchaeol. PD MAY-JUN PY 2012 VL 22 IS 3 BP 253 EP 260 DI 10.1002/oa.1199 PG 8 WC Anthropology; Archaeology SC Anthropology; Archaeology GA 951IO UT WOS:000304714400001 ER PT J AU Onaga, H Fiedler, GC Baeza, JA AF Onaga, Hitoshi Fiedler, G. Curt Baeza, J. Antonio TI PROTANDRIC SIMULTANEOUS HERMAPHRODITISM IN PARHIPPOLYTE MISTICIA (CLARK, 1989) (CARIDEA: HIPPOLYTIDAE): IMPLICATIONS FOR THE EVOLUTION OF MIXED SEXUAL SYSTEMS IN SHRIMP SO JOURNAL OF CRUSTACEAN BIOLOGY LA English DT Article DE Barbouridae; Lysmatidae; mating system; Parhippolyte; sex allocation; sex ratio ID LYSMATA-WURDEMANNI DECAPODA; MARINE SHRIMP; SOCIAL MONOGAMY; EXHIPPOLYSMATA-OPLOPHOROIDES; ADAPTIVE SIGNIFICANCE; REPRODUCTIVE-BIOLOGY; CARIBBEAN SEA; ALLOCATION; RECRUITMENT; CRUSTACEA AB The sexual system of the shrimp Parhippolyte misticia (Clark, 1989), inhabiting the rocky subtidal at Okinawa, Japan and Kimbe Bay, Papua New Guinea, was examined. Dissections suggested that the population consisted of male phase (MP) and functional simultaneous euhermaphrodite (EH) individuals. MPs have cincinulli and appendices masculinae on the first and second pair of pleopods, respectively, gonopores located at the coxae of the third pair of walking legs, and ovotestes with a well-developed male portion containing sperm, but an undeveloped female portion. EHs lacked appendices masculinae and cincinulli. However, they have male gonopores and ovotestes with well-developed ovaries containing mature oocytes and testes with sperm. When EHs were maintained in pairs, both shrimp molted and spawned eggs which attached below the pleon and developed as embryos, demonstrating that EHs can reproduce as males and inseminate other Elis acting as females. These results demonstrate that P misticia is a protandric simultaneous hermaphrodite, as reported before for other shrimp of the genera Lysmata and Exhippolysmata. Also, these results suggest that protandric simultaneous hermaphroditism might have evolved more than once independently in shrimp from the diverse and species-rich Infraorder Caridea. Future research aimed at disentangling the phylogenetic relationship of Parhippolyte, Lysmata, Exhippolysmata and other closely related genera (Calliasmata, Lysmatella, Barbouria) and describing the sociobiology of additional representatives from the genera above is needed to understand the evolutionary history of sexual systems in caridean shrimp. C1 [Baeza, J. Antonio] Old Dominion Univ, Dept Biol Sci, Norfolk, VA 23529 USA. [Baeza, J. Antonio] Smithsonian Marine Stn Ft Pierce, Ft Pierce, FL 34949 USA. [Baeza, J. Antonio] Univ Catolica Norte, Fac Ciencias Mar, Dept Biol Marina, Larrondo 1281, Coquimbo, Chile. [Onaga, Hitoshi; Fiedler, G. Curt] Univ Maryland, Univ Coll, Asia Div, USAG J Unit 45013, Zama Shi, Kanagawa 2280827, Japan. RP Baeza, JA (reprint author), Old Dominion Univ, Dept Biol Sci, Norfolk, VA 23529 USA. EM baezaa@si.edu OI Baeza, Juan Antonio/0000-0002-2573-6773 FU National Geographic Society; Smithsonian Marine Station (SMSFP, Fort Pierce, Florida, USA); Smithsonian Tropical Research Institute (STRI, Bocas del Toro, Panama) FX Logistical support from James D. Reimer, Yoshikatsu Nakano, Yoshihisa Fujita, Obushi Masami and Takuma Fujii at Okinawa and from Raphael Ritson-Williams and Jimmy O'Donnell at Papua New Guinea, is deeply appreciated by JAB. Logistic support from Mahonia na Dari and Walindi Plantation Resort (and their staff members) at Papua New Guinea is kindly acknowledged by JAB. This research was partially funded by a Committee for Research and Exploration Grant of the National Geographic Society (to JAB). JAB deeply thanks support from the Smithsonian Marine Station (SMSFP, Fort Pierce, Florida, USA) Fellowship and Smithsonian Tropical Research Institute (STRI, Bocas del Toro, Panama) Marine Fellowship. This article is SMSFP contribution number 874. NR 73 TC 6 Z9 8 U1 0 U2 7 PU CRUSTACEAN SOC PI SAN ANTONIO PA 840 EAST MULBERRY, SAN ANTONIO, TX 78212 USA SN 0278-0372 EI 1937-240X J9 J CRUSTACEAN BIOL JI J. Crustac. Biol. PD MAY PY 2012 VL 32 IS 3 BP 383 EP 394 DI 10.1163/193724012X626520 PG 12 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA 953AR UT WOS:000304839800004 ER PT J AU Luque, J Feldmann, RM Schweitzer, CE Jaramillo, C Cameron, CB AF Luque, Javier Feldmann, Rodney M. Schweitzer, Carrie E. Jaramillo, Carlos Cameron, Christopher B. TI THE OLDEST FROG CRABS (DECAPODA: BRACHYURA: RANINOIDA) FROM THE APTIAN OF NORTHERN SOUTH AMERICA SO JOURNAL OF CRUSTACEAN BIOLOGY LA English DT Article DE Albian; Aptian; body plan; Brachyura; Cretaceous; Neotropics; raninoid crabs ID MIDCRETACEOUS OCEAN CIRCULATION; CRETACEOUS ARCTIC-OCEAN; COON CREEK FORMATION; ONTONG-JAVA PLATEAU; MODEL SIMULATION; UNION COUNTY; CRUSTACEA; SURFACE; GREENHOUSE; MEXICO AB Raninoida, also known as "frog crabs," is a clade of extant true crabs (Brachyura) characterized by a fusiform carapace (raninid-type), narrow thoracic sternum, pleon partially exposed dorsally, and paddle-like limbs, all of which are well suited to their cryptic burrowing lifestyle. However, the most basal raninoids from the Cretaceous were morphologically different, with ornamented carapaces that were wider than long (necrocarcinid-type), a broader thoracic sternum, and the pleon fitting between the legs assisted by pleonal locking mechanisms. During Albian times (similar to 112 to 99.6 Ma.) both body plans flourished worldwide. In contrast, pre-Albian (older than similar to 112 Ma.) fusiform families have not yet been reported. The discovery of Notopocorystes kerri n. sp., a fusiform crab from the upper Aptian (similar to 115 Ma.) of Colombia, South America, and the re-examination of Planocarcinus olssoni (Rathbun, 1937) n. comb., a necrocarcinidlike crab from the same age and locality, extend the record of the two body plans back into the Aptian of the equatorial Neotropics. Notopocorystes kerri is the oldest fusiform raninoid known to date, revealing that the morphological innovation of a fusiform carapace was already evolved in Raninoida before the rapid radiation experienced during Albian times. Our findings are suggestive of a still unresolved Palaeocorystidae, containing the rootstock for the post-Aptian Raninidae/Symethidae clade, with the most basal palaeocorystids lying in proximity to, and possibly derived from, a necrocarcinid-like ancestor. C1 [Luque, Javier; Cameron, Christopher B.] Univ Montreal, Dept Sci Biol, Montreal, PQ H3C 3J7, Canada. [Jaramillo, Carlos] Smithsonian Trop Res Inst, Balboa 084303092, Panama. [Feldmann, Rodney M.] Kent State Univ, Dept Geol, Kent, OH 44242 USA. [Schweitzer, Carrie E.] Kent State Univ Stark, Dept Geol, N Canton, OH 44720 USA. RP Luque, J (reprint author), Univ Montreal, Dept Sci Biol, CP 6128, Montreal, PQ H3C 3J7, Canada. EM javierluquec@gmail.com OI Luque, Javier/0000-0002-4391-5951 FU American Museum of Natural History (AMNH); NSERC; Smithsonian Tropical Research Institute (STRI) FX We thank the Smithsonian Tropical Research Institute (STRI), and the Lerner Gray Memorial Fund of the American Museum of Natural History (AMNH) for providing (to JL) facilities and funds to allow the development of the present research. Kecia Kerr (McGill University) for the valuable field assistance and improvements to the manuscript, and Fernando Etayo-Serna (INGEOMINAS) for intellectual support. Daniele Guinot (MHNH), Matatsune Takeda (Teikyo Heisei University), Francisco Vega (UNAM), Angel Aguirre and the staff of the STRI Library provided literature items. Jose Arenas (INGEOMINAS, Colombia) supplied export permits. Tomoki Kase (National Museum of Nature and Science, Tokyo) provided a photo of one specimen from Japan. Julia Figueroa and family provided kind hospitality and permission to collect on their property. Two anonymous reviewers are gratefully acknowledged for their constructive comments. Partial funding for this project was provided by an NSERC grant to CBC. NR 121 TC 10 Z9 12 U1 0 U2 7 PU CRUSTACEAN SOC PI SAN ANTONIO PA 840 EAST MULBERRY, SAN ANTONIO, TX 78212 USA SN 0278-0372 EI 1937-240X J9 J CRUSTACEAN BIOL JI J. Crustac. Biol. PD MAY PY 2012 VL 32 IS 3 BP 405 EP 420 DI 10.1163/193724012X626539 PG 16 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA 953AR UT WOS:000304839800006 ER PT J AU Chullasorn, S Dahms, HU Iwasaki, N Kangtia, P Ferrari, FD Jeon, HJ Yang, WX AF Chullasorn, Supawadee Dahms, Hans-U. Iwasaki, Nozomu Kangtia, Pawana Ferrari, Frank D. Jeon, Hyoung Joo Yang, Wan-Xi TI Naupliar Development of an Ancorabolid, Paralaophontodes sp (Copepoda: Harpacticoida) Sheds Light on Harpacticoid Evolution SO ZOOLOGICAL STUDIES LA English DT Article DE Naupliar characters; Evolution; Systematics; Phylogeny; Development; Ancorabolidae ID CYCLOPIDAE; CRUSTACEA; RECORD AB Supawadee Chullasorn, Hans-U. Dahms, Nozomu Iwasaki, Pawana Kangtia, Frank D. Ferrari, Hyoung Joo Jeon, and Wan-Xi Yang (2012) Naupliar development of an ancorabolid, Paralaophontodes sp. (Copepoda: Harpacticoida) sheds light on harpacticoid evolution. Zoological Studies 51(3): 372-382. Loss of the naupliar arthrite during the molt to naupliar stage (N) VI provides a developmental apomorphy for all Harpacticoida and sheds light on the evolution within this diverse copepod taxon. Naupliar development of Paralaophontodes sp. is unusual because the bud of swimming legs 1 and 2 does not bear setae at N VI and because the naupliar arthrite, present on the coxa of antenna 2 during the 1st 5 stages, fails to form during the molt to N VI; in addition, setal elements are lost from the basis and endopod of the mandible during this molt. This is only known from some harpacticoid copepods belonging to Tisbe; loss of setal elements on the mandible was also otherwise reported for species of the Tachidiidae and Harpacticidae. Five naupliar stages of the ancorabolid, Paralaophontodes sp., are described. A key to the identification of the stages is provided. Stages can be distinguished by the number of segments of the exopod of antenna 2, setation of the limbs including the bud of the caudal ramus, and the presence and setation of the bud of maxilla 1. This is the 1st description of nauplii of a species belonging to the oligoarthran family Ancorabolidae. http://zoolstud.sinica.edu.tw/Journals/51.3/372.pdf C1 [Yang, Wan-Xi] Zhejiang Univ, Coll Life Sci, Sperm Lab, Hangzhou 310058, Zhejiang, Peoples R China. [Chullasorn, Supawadee] Ramkhamhang Univ, Fac Sci, Dept Biol, Bangkok 10240, Thailand. [Dahms, Hans-U.; Kangtia, Pawana] Sangmyung Univ 7, Coll Nat Sci, Green Life Sci Dept, Seoul 110743, South Korea. [Iwasaki, Nozomu] Kochi Univ, Usa Marine Biol Inst, Tosa, Kochi 7811164, Japan. [Ferrari, Frank D.] Smithsonian Inst, Natl Museum Nat Hist, Suitland, MD 20746 USA. [Jeon, Hyoung Joo] Inland Fisheries Res Inst, Natl Fisheries Res & Dev Inst, Gyeonggi Do 1143, South Korea. RP Yang, WX (reprint author), Zhejiang Univ, Coll Life Sci, Sperm Lab, Zi Jin Gang Campus,866 Yu Hang Tang Rd, Hangzhou 310058, Zhejiang, Peoples R China. EM wxyang@spermlab.org FU Ramkhamhaeng University (Bangkok); National Research Foundation of Korea (NRF); Ministry of Education, Science and Technology [2010-A001-0057]; National Nature Science Foundation of China [31072198, 30671606] FX The work of S. Chullasorn is supported by Ramkhamhaeng University (Bangkok). The work of H.-U. Dahms is supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2010-A001-0057). The work of W.X. Yang is supported by the National Nature Science Foundation of China (Grant No. 31072198 and 30671606). NR 31 TC 3 Z9 3 U1 0 U2 3 PU ACAD SINICA INST ZOOLOGY PI TAIPEI PA EDITORIAL OFFICE, TAIPEI 115, TAIWAN SN 1021-5506 J9 ZOOL STUD JI Zool. Stud. PD MAY PY 2012 VL 51 IS 3 BP 372 EP 382 PG 11 WC Zoology SC Zoology GA 953RN UT WOS:000304891000009 ER PT J AU Fontani, F Caselli, P Zhang, Q Brand, J Busquet, G Palau, A AF Fontani, F. Caselli, P. Zhang, Q. Brand, J. Busquet, G. Palau, Aina TI Temperature and kinematics of protoclusters with intermediate and high-mass stars: the case of IRAS 05345+3157 SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE stars: formation; radio lines: ISM; ISM: individual objects: IRAS 05345+3157; ISM: kinematics and dynamics; ISM: molecules ID DENSE INTERSTELLAR CLOUDS; LARGE ARRAY OBSERVATIONS; PRE-STELLAR CORES; INITIAL CONDITIONS; STARLESS CORES; PROTOSTELLAR CANDIDATES; PRESTELLAR CORES; NH3 OBSERVATIONS; PIPE NEBULA; DEPLETION AB Context. Improving our understanding of the complex star formation process in clusters requires studies of star-forming clouds to search for dependencies of the physical properties on environmental variables, such as overall density, stellar crowding and feedback from massive (proto-) stars. Aims. We aim to map at small spatial scales the temperature and the velocity field in the protocluster associated with IRAS 05345+3157, which contains both intermediate-/high-mass protostellar candidates and starless condensations, and is thus an excellent location to investigate the role of massive protostars on protocluster evolution. Methods. We observed the ammonia (1, 1) and (2, 2) inversion transitions with the VLA. Ammonia is the best thermometer for dense and cold gas, and the observed transitions have critical densities able to trace the kinematics of the intracluster gaseous medium. Results. The ammonia emission is extended and distributed in two filamentary structures. The starless condensations are colder than the star-forming cores, but the gas temperature across the whole protocluster is higher (by a factor of 1.3-1.5) than that measured typically in both infrared dark clouds and low-mass protoclusters. The non-thermal contribution to the observed line broadening is at least a factor of 2 larger than the expected thermal broadening even in starless condensations, contrary to the close-to-thermal line widths measured in low-mass quiescent dense cores. The NH3/N2H+ abundance ratio is greatly enhanced (a factor of 10) in the pre-stellar core candidates, probably due to freeze-out of most molecular species heavier than He. Conclusions. The more massive and evolved objects likely play a dominant role in the physical properties and kinematics of the protocluster. The high level of turbulence and the fact that the measured core masses are larger than the expected thermal Jeans masses indicate that turbulence likely was an important factor in the initial fragmentation of the parental clump and can provide support against further fragmentation of the cores. C1 [Fontani, F.] Osserv Astrofis Arcetri, INAF, I-50125 Florence, Italy. [Caselli, P.] Univ Leeds, Sch Phys & Astrophys, Leeds LS2 9JT, W Yorkshire, England. [Zhang, Q.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Brand, J.] Ist Radioastron, INAF, I-40129 Bologna, Italy. [Busquet, G.] Ist Astrofis & Planetol Spaziali, INAF, I-00133 Rome, Italy. [Palau, Aina] Inst Ciencies Espai CSIC IEEC, Fac Ciencies, Bellaterra 08193, Spain. RP Fontani, F (reprint author), Osserv Astrofis Arcetri, INAF, Lgo E Fermi 5, I-50125 Florence, Italy. EM fontani@arcetri.astro.it OI Brand, Jan/0000-0003-1615-9043; Fontani, Francesco/0000-0003-0348-3418; Zhang, Qizhou/0000-0003-2384-6589 FU Spanish MICINN [AYA2008-06189-C03]; FEDER; JAE-Doc CSIC fellowship; European Social Fund; Italian Space Agency (ASI) [I/005/07/01] FX F.F. is grateful to R. Cesaroni for a careful reading of the manuscript and for providing useful comments and suggestions. A.P. is supported by the Spanish MICINN grant AYA2008-06189-C03 (co-funded with FEDER funds) and by a JAE-Doc CSIC fellowship co-funded with the European Social Fund. G.B. is funded by an Italian Space Agency (ASI) fellowship under contract number I/005/07/01. Many thanks to the anonymous referee for his/her useful comments and suggestions. NR 55 TC 10 Z9 10 U1 0 U2 0 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD MAY PY 2012 VL 541 AR A32 DI 10.1051/0004-6361/201118153 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 946XN UT WOS:000304390900032 ER PT J AU Liseau, R Goldsmith, PF Larsson, B Pagani, L Bergman, P Le Bourlot, J Bell, TA Benz, AO Bergin, EA Bjerkeli, P Black, JH Bruderer, S Caselli, P Caux, E Chen, JH de Luca, M Encrenaz, P Falgarone, E Gerin, M Goicoechea, JR Hjalmarson, A Hollenbach, DJ Justtanont, K Kaufman, MJ Le Petit, F Li, D Lis, DC Melnick, GJ Nagy, Z Olofsson, AOH Olofsson, G Roueff, E Sandqvist, A Snell, RL van der Tak, FFS van Dishoeck, EF Vastel, C Viti, S Yildiz, UA AF Liseau, R. Goldsmith, P. F. Larsson, B. Pagani, L. Bergman, P. Le Bourlot, J. Bell, T. A. Benz, A. O. Bergin, E. A. Bjerkeli, P. Black, J. H. Bruderer, S. Caselli, P. Caux, E. Chen, J. -H. de Luca, M. Encrenaz, P. Falgarone, E. Gerin, M. Goicoechea, J. R. Hjalmarson, A. Hollenbach, D. J. Justtanont, K. Kaufman, M. J. Le Petit, F. Li, D. Lis, D. C. Melnick, G. J. Nagy, Z. Olofsson, A. O. H. Olofsson, G. Roueff, E. Sandqvist, Aa. Snell, R. L. van der Tak, F. F. S. van Dishoeck, E. F. Vastel, C. Viti, S. Yildiz, U. A. TI Multi-line detection of O-2 toward rho Ophiuchi A SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE ISM: abundances; ISM: molecules; ISM: lines and bands; ISM: clouds; ISM: individual objects: rho Oph A SM1; stars: formation ID INTERSTELLAR HYDROGEN-PEROXIDE; C-I EMISSION; DARK-CLOUD; MOLECULAR CLOUDS; SUBMILLIMETER OBSERVATIONS; PHOTODISSOCIATION REGIONS; ODIN SATELLITE; DUST GRAINS; MAIN CLOUD; OPH CLOUD AB Context. Models of pure gas-phase chemistry in well-shielded regions of molecular clouds predict relatively high levels of molecular oxygen, O-2, and water, H2O. These high abundances imply high cooling rates, leading to relatively short timescales for the evolution of gravitationally unstable dense cores, forming stars and planets. Contrary to expectations, the dedicated space missions SWAS and Odin typically found only very small amounts of water vapour and essentially no O-2 in the dense star-forming interstellar medium. Aims. Only toward rho OphA did Odin detect a very weak line of O-2 at 119 GHz in a beam of size 10 arcmin. The line emission of related molecules changes on angular scales of the order of some tens of arcseconds, requiring a larger telescope aperture such as that of the Herschel Space Observatory to resolve the O-2 emission and pinpoint its origin. Methods. We use the Heterodyne Instrument for the Far Infrared (HIFI) aboard Herschel to obtain high resolution O-2 spectra toward selected positions in the rho Oph A core. These data are analysed using standard techniques for O2 excitation and compared to recent PDR-like chemical cloud models. Results. The N-J = 3(3)-1(2) line at 487.2 GHz is clearly detected toward all three observed positions in the rho Oph A core. In addition, an oversampled map of the 5(4)-3(4) transition at 773.8 GHz reveals the detection of the line in only half of the observed area. On the basis of their ratios, the temperature of the O-2 emitting gas appears to vary quite substantially, with warm gas (greater than or similar to 50 K) being adjacent to a much colder region, of temperatures lower than 30 K. Conclusions. The exploited models predict that the O-2 column densities are sensitive to the prevailing dust temperatures, but rather insensitive to the temperatures of the gas. In agreement with these models, the observationally determined O-2 column densities do not seem to depend strongly on the derived gas temperatures, but fall into the range N(O-2) = 3 to greater than or similar to 6 x 10(15) cm(-2). Beam-averaged O-2 abundances are about 5 x 10(-8) relative to H-2. Combining the HIFI data with earlier Odin observations yields a source size at 119 GHz in the range of 4 to 5 arcmin, encompassing the entire rho Oph A core. We speculate that one of the reasons for the generally very low detection rate of O-2 is the short period of time during which O-2 molecules are reasonably abundant in molecular clouds. C1 [Liseau, R.; Bjerkeli, P.; Black, J. H.; Hjalmarson, A.; Justtanont, K.] Onsala Space Observ, Chalmers Univ Technol, Dept Earth & Space Sci, S-43992 Onsala, Sweden. [Goldsmith, P. F.; Chen, J. -H.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Larsson, B.; Olofsson, G.; Sandqvist, Aa.] Stockholm Univ, Dept Astron, S-10691 Stockholm, Sweden. [Pagani, L.; Encrenaz, P.] Observ Paris, LERMA, F-75014 Paris, France. [Pagani, L.; Encrenaz, P.] Observ Paris, UMR 8112, CNRS, F-75014 Paris, France. [Bergman, P.; Olofsson, A. O. H.] Chalmers, Onsala Space Observ, S-43992 Onsala, Sweden. [Le Bourlot, J.; de Luca, M.; Le Petit, F.; Roueff, E.] Observ Paris, LUTH, F-75014 Paris, France. [Bell, T. A.; Goicoechea, J. R.] Ctr Astrobiol, CSICINTA, Madrid 28850, Spain. [Benz, A. O.; Bruderer, S.] ETH, Inst Astron, CH-8092 Zurich, Switzerland. [Bergin, E. A.] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA. [Caselli, P.] Univ Leeds, Sch Phys & Astron, Leeds, W Yorkshire, England. [Caux, E.; Vastel, C.] Univ Toulouse, UPS OMP, IRAP, Toulouse, France. [Caux, E.; Vastel, C.] CNRS, IRAP, F-31028 Toulouse 4, France. [Falgarone, E.; Gerin, M.] Observ Paris, UMR8112, CNRS, LRA LERMA, F-75231 Paris 05, France. [Falgarone, E.; Gerin, M.] Ecole Normale Super, F-75231 Paris 05, France. [Hollenbach, D. J.] SETI Inst, Mountain View, CA 94043 USA. [Kaufman, M. J.] San Jose State Univ, Dept Phys & Astron, San Jose, CA 95192 USA. [Li, D.] Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China. [Li, D.; Lis, D. C.] CALTECH, Cahill Ctr Astron & Astrophys, Pasadena, CA 91125 USA. [Melnick, G. J.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Nagy, Z.; van der Tak, F. F. S.] SRON Netherlands Inst Space Res, NL-9700 AV Groningen, Netherlands. [Nagy, Z.; van der Tak, F. F. S.] Univ Groningen, Kapteyn Astron Inst, NL-9700 AV Groningen, Netherlands. [Snell, R. L.] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA. [van Dishoeck, E. F.; Yildiz, U. A.] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands. [Bruderer, S.; van Dishoeck, E. F.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. [Viti, S.] UCL, Dept Phys & Astron, London, England. RP Liseau, R (reprint author), Onsala Space Observ, Chalmers Univ Technol, Dept Earth & Space Sci, S-43992 Onsala, Sweden. EM rene.liseau@chalmers.se RI Yildiz, Umut/C-5257-2011; Goldsmith, Paul/H-3159-2016 OI Yildiz, Umut/0000-0001-6197-2864; NR 63 TC 46 Z9 46 U1 1 U2 9 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 1432-0746 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD MAY PY 2012 VL 541 AR A73 DI 10.1051/0004-6361/201118575 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 946XN UT WOS:000304390900073 ER PT J AU Michalowski, MJ Dunlop, JS Cirasuolo, M Hjorth, J Hayward, CC Watson, D AF Michalowski, M. J. Dunlop, J. S. Cirasuolo, M. Hjorth, J. Hayward, C. C. Watson, D. TI The stellar masses and specific star-formation rates of submillimetre galaxies SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE galaxies: active; galaxies: evolution; galaxies: high-redshift; galaxies: ISM; galaxies: starburst; submillimeter: galaxies ID HUBBLE-SPACE-TELESCOPE; HIGH-REDSHIFT GALAXIES; SPECTRAL ENERGY-DISTRIBUTION; EXTRAGALACTIC LEGACY SURVEY; MILLIMETER-SELECTED GALAXY; ACTIVE GALACTIC NUCLEI; DUST-OBSCURED GALAXIES; ULTRA DEEP SURVEY; TP-AGB STARS; SIMILAR-TO 3 AB Establishing the stellar masses, and hence specific star-formation rates of submillimetre galaxies is crucial for determining the role of such objects in the cosmic history of galaxy/star formation. However, there is as yet no consensus over the typical stellar masses of submillimetre galaxies, as illustrated by the widely differing results reported from recent optical-infrared studies of submillimetre galaxies with spectroscopic redshifts z similar or equal to 2-3. Specifically, even for the same set of submillimetre galaxies, the reported average stellar masses have ranged over an order of magnitude, from similar or equal to 5 x 10(10) M-circle dot to less than or similar to 5 x 10(11) M-circle dot. Here we study how different methods of analysis can lead to such widely varying results. We find that, contrary to recent claims in the literature, potential contamination of IRAC 3-8 mu m photometry from hot dust associated with an active nucleus is not the origin of the published discrepancies in derived stellar masses. Instead, we expose in detail how inferred stellar mass depends on assumptions made in the photometric fitting, and quantify the individual and cumulative effects of different choices of initial mass function, different "brands" of evolutionary synthesis models, and different forms of assumed star-formation history. We review current observational evidence for and against these alternatives as well as clues from the hydrodynamical simulations, and conclude that, for the most justifiable choices of these model inputs, the average stellar mass of luminous (S-850 greater than or similar to 5 mJy) submillimetre galaxies is similar or equal to 2 x 10(11) M-circle dot to within a factor similar or equal to 2. We also check and confirm that this number is perfectly reasonable in the light of the latest measurements of the dynamical masses of these objects (similar or equal to 2-6x10(11) M-circle dot from CO (1-0) observations), and the evolving stellar mass function of the overall galaxy population. Galaxy stellar masses of this order imply that the average specific star-formation rate of submillimetre galaxies is comparable to that of other star-forming galaxies at z > 2, at 2-3 Gyr(-1). This supports the view that, while rare outliers may be found at any stellar mass, most submillimetre galaxies simply form the top end of the "main-sequence" of star-forming galaxies at these redshifts. Conversely, this argues strongly against the viewpoint, frequently simply asserted in the literature, that submillimetre galaxies are extreme pathological objects, of little relevance in the cosmic history of star-formation. C1 [Michalowski, M. J.; Dunlop, J. S.; Cirasuolo, M.] Univ Edinburgh, Royal Observ, Inst Astron, SUPA, Edinburgh EH9 3HJ, Midlothian, Scotland. [Hjorth, J.; Watson, D.] Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, DK-2100 Copenhagen O, Denmark. [Hayward, C. C.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Michalowski, MJ (reprint author), Univ Edinburgh, Royal Observ, Inst Astron, SUPA, Edinburgh EH9 3HJ, Midlothian, Scotland. EM mm@roe.ac.uk RI Hayward, Christopher/I-4756-2012; Hjorth, Jens/M-5787-2014; Watson, Darach/E-4521-2015 OI Hayward, Christopher/0000-0003-4073-3236; Hjorth, Jens/0000-0002-4571-2306; Watson, Darach/0000-0002-4465-8264 FU UK Science & Technology Facilities Council; Royal Society; European Research Council; Danish National Research Foundation FX We thank Joanna Baradziej and our anonymous referee for help with improving this paper and Georgios Magdis for comments. M.J.M. and J.S.D. acknowledge the support of the UK Science & Technology Facilities Council. J.S.D. acknowledges the support of the Royal Society via a Wolfson Research Merit award, and the support of the European Research Council through an Advanced Grant. The Dark Cosmology Centre is funded by the Danish National Research Foundation. This research has made use of Tool for OPerations on Catalogues And Tables (TOPCAT; Taylor 2005): www.starlink.ac.uk/topcat/ and NASA's Astrophysics Data System Bibliographic Services. NR 116 TC 74 Z9 74 U1 0 U2 2 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD MAY PY 2012 VL 541 AR A85 DI 10.1051/0004-6361/201016308 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 946XN UT WOS:000304390900085 ER PT J AU Poppenhaeger, K Czesla, S Schroter, S Lalitha, S Kashyap, V Schmitt, JHMM AF Poppenhaeger, K. Czesla, S. Schroeter, S. Lalitha, S. Kashyap, V. Schmitt, J. H. M. M. TI The high-energy environment in the super-Earth system CoRoT-7 SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE stars: activity; planetary systems; planets and satellites: atmospheres; X-rays: stars; stars: coronae; X-rays: individuals: CoRoT-7 ID X-RAY; PLANETARY-ATMOSPHERES; INTERSTELLAR-MEDIUM; HOT JUPITERS; GJ 1214B; H-I; EVOLUTION; MASS; SPECTROSCOPY; EVAPORATION AB High-energy irradiation of exoplanets has been identified to be a key influence on the stability of these planets' atmospheres. So far, irradiation-driven mass-loss has been observed only in two Hot Jupiters, and the observational data remain even more sparse in the super-Earth regime. We present an investigation of the high-energy emission in the CoRoT-7 system, which hosts the first known transiting super-Earth. To characterize the high-energy XUV radiation field into which the rocky planets CoRoT-7b and CoRoT-7c are immersed, we analyzed a 25 ks XMM-Newton observation of the host star. Our analysis yields the first clear (3.5 sigma) X-ray detection of CoRoT-7. We determine a coronal temperature of approximate to 3 MK and an X-ray luminosity of 3 x 10(28) erg s(-1). The level of XUV irradiation on CoRoT-7b amounts to approximate to 37 000 erg cm(-2) s(-1). Current theories for planetary evaporation can only provide an order-of-magnitude estimate for the planetary mass loss; assuming that CoRoT-7b has formed as a rocky planet, we estimate that CoRoT-7b evaporates at a rate of about 1.3 x 10(11) gs(-1) and has lost approximate to 4-10 earth masses in total. C1 [Poppenhaeger, K.; Czesla, S.; Schroeter, S.; Lalitha, S.; Schmitt, J. H. M. M.] Hamburger Sternwarte, D-21029 Hamburg, Germany. [Kashyap, V.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Poppenhaeger, K (reprint author), Hamburger Sternwarte, Gojenbergsweg 112, D-21029 Hamburg, Germany. EM katja.poppenhaeger@hs.uni-hamburg.de OI Poppenhaeger, Katja/0000-0003-1231-2194 FU German Research Foundation (DFG) [Graduiertenkolleg 1351]; DLR [50OR0703] FX K.P. and S.L. acknowledge funding from the German Research Foundation (DFG) via Graduiertenkolleg 1351. S.C. and S.S. acknowledge financial support from DLR grant 50OR0703. NR 34 TC 9 Z9 9 U1 1 U2 2 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD MAY PY 2012 VL 541 AR A26 DI 10.1051/0004-6361/201118507 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 946XN UT WOS:000304390900026 ER PT J AU van Haaften, LM Nelemans, G Voss, R Jonker, PG AF van Haaften, L. M. Nelemans, G. Voss, R. Jonker, P. G. TI Formation of the planet around the millisecond pulsar J1719-1438 SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE pulsars: individual: J1719-1438; binaries: close; planets and satellites: formation ID X-RAY BINARIES; WHITE-DWARF DONORS; SAX J1808.4-3658; ORBITAL-PERIOD; BLACK-WIDOW; EVOLUTION; ACCRETION; STARS; SECONDARIES; HELIUM AB Context. Recently the discovery of PSR J1719-1438, a 5.8 ms pulsar with a companion in a 2.2 h orbit, was reported. The combination of this orbital period and the very low mass function is unique. The discoverers, Bailes et al. (2011, Science, 333, 1717), proposed an ultracompact X-ray binary (UCXB) as the progenitor system. However, the standard UCXB scenario would not produce this system as the time required to reach this orbital period exceeds the current estimate of the age of the Universe. The detached state of the system aggravates the problem. The inclination of the system is an important unknown, and Bailes et al. noted that for very low (a priori very unlikely) inclinations the system is better explained as having a brown dwarf companion rather than an UCXB origin. Aims. We want to understand the evolutionary history of PSR J1719-1438, and determine under which circumstances it could have evolved from an UCXB. Methods. We model UCXB evolution varying the donor size and investigate the effect of a wind mass loss from the donor, and compare the results with the observed characteristics of PSR J1719-1438. Results. An UCXB can reach a 2.2 h orbit within the age of the Universe, provided that 1) the millisecond pulsar can significantly heat and expand the donor by pulsar irradiation, or 2) the system loses extra orbital angular momentum, e. g. via a fast wind from the donor. Conclusions. The most likely scenario for the formation of PSR J1719-1438 is UCXB evolution driven by angular momentum loss via the usual gravitational wave emission, which is enhanced by angular momentum loss via a donor wind of greater than or similar to 3 x 10(-13) M-circle dot yr(-1). Depending on the size of the donor during the evolution, the companion presently probably has a mass of similar to 1-3 Jupiter masses, making it a very low mass white dwarf as proposed by Bailes et al. Its composition can be either helium or carbon-oxygen. A helium white dwarf companion makes the long (for an UCXB) orbital period easier to explain, but the required inclination makes it a priori less likely than a carbon-oxygen white dwarf. C1 [van Haaften, L. M.; Nelemans, G.; Voss, R.; Jonker, P. G.] Radboud Univ Nijmegen, Dept Astrophys IMAPP, NL-6500 GL Nijmegen, Netherlands. [Nelemans, G.] Katholieke Univ Leuven, Inst Astron, B-3001 Louvain, Belgium. [Jonker, P. G.] SRON Netherlands Inst Space Res, SRON, NL-3584 CA Utrecht, Netherlands. [Jonker, P. G.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP van Haaften, LM (reprint author), Radboud Univ Nijmegen, Dept Astrophys IMAPP, POB 9010, NL-6500 GL Nijmegen, Netherlands. EM L.vanHaaften@astro.ru.nl RI Nelemans, Gijs/D-3177-2012 OI Nelemans, Gijs/0000-0002-0752-2974 FU Netherlands Organisation for Scientific Research (NWO) FX L.M.v.H. is supported by the Netherlands Organisation for Scientific Research (NWO). G.N., R.V. and P.G.J. are supported by NWO VIDI grants. NR 24 TC 17 Z9 17 U1 0 U2 0 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD MAY PY 2012 VL 541 AR A22 DI 10.1051/0004-6361/201218798 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 946XN UT WOS:000304390900022 ER PT J AU DeVience, SJ Walsworth, RL Rosen, MS AF DeVience, Stephen J. Walsworth, Ronald L. Rosen, Matthew S. TI Dependence of nuclear spin singlet lifetimes on RF spin-locking power SO JOURNAL OF MAGNETIC RESONANCE LA English DT Article DE Nuclear singlet state; Long-lived coherence; Spin-lattice relaxation; Spin-locking ID LONG-LIVED STATES; SOLUTION NMR; HYPERPOLARIZED C-13; MAGNETIC-RESONANCE; SLOW DIFFUSION; RELAXATION; SPECTROSCOPY; SYSTEMS; FIELD AB We measure the lifetime of long-lived nuclear spin singlet states as a function of the strength of the RF spin-locking field and present a simple theoretical model that agrees well with our measurements, including the low-RF-power regime. We also measure the lifetime of a long-lived coherence between singlet and triplet states that does not require a spin-locking field for preservation. Our results indicate that for many molecules, singlet states can be created using weak RF spin-locking fields: more than two orders of magnitude lower RF power than in previous studies. Our findings suggest that for many endogenous biomolecules, singlets and related states with enhanced lifetimes might be achievable in vivo with safe levels of RF power. (C) 2012 Elsevier Inc. All rights reserved. C1 [DeVience, Stephen J.; Walsworth, Ronald L.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [DeVience, Stephen J.] Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA. [Walsworth, Ronald L.; Rosen, Matthew S.] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA. [Rosen, Matthew S.] Harvard Univ, Sch Med, Boston, MA 02115 USA. [Rosen, Matthew S.] Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA. RP DeVience, SJ (reprint author), Harvard Smithsonian Ctr Astrophys, MS 59,60 Garden St, Cambridge, MA 02138 USA. EM devience@fas.harvard.edu; rwalsworth@cfa.harvard.edu; mrosen@cfa.harvard.edu RI DeVience, Stephen/D-7274-2012 OI DeVience, Stephen/0000-0003-3142-7296 NR 28 TC 11 Z9 11 U1 0 U2 20 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 1090-7807 J9 J MAGN RESON JI J. Magn. Reson. PD MAY PY 2012 VL 218 BP 5 EP 10 DI 10.1016/j.jmr.2012.03.016 PG 6 WC Biochemical Research Methods; Physics, Atomic, Molecular & Chemical; Spectroscopy SC Biochemistry & Molecular Biology; Physics; Spectroscopy GA 948GK UT WOS:000304491400002 PM 22578548 ER PT J AU Bar-Gill, N Pham, LM Belthangady, C Le Sage, D Cappellaro, P Maze, JR Lukin, MD Yacoby, A Walsworth, R AF Bar-Gill, N. Pham, L. M. Belthangady, C. Le Sage, D. Cappellaro, P. Maze, J. R. Lukin, M. D. Yacoby, A. Walsworth, R. TI Suppression of spin-bath dynamics for improved coherence of multi-spin-qubit systems SO NATURE COMMUNICATIONS LA English DT Article ID NUCLEAR-SPIN; ELECTRONIC SPIN; NANOSCALE RESOLUTION; MAGNETIC-RESONANCE; SPECTRAL DIFFUSION; RELAXATION-TIMES; DIAMOND; DECOHERENCE; READOUT; NOISE AB Multi-qubit systems are crucial for the advancement and application of quantum science. Such systems require maintaining long coherence times while increasing the number of qubits available for coherent manipulation. For solid-state spin systems, qubit coherence is closely related to fundamental questions of many-body spin dynamics. Here we apply a coherent spectroscopic technique to characterize the dynamics of the composite solid-state spin environment of nitrogen-vacancy colour centres in room temperature diamond. We identify a possible new mechanism in diamond for suppression of electronic spin-bath dynamics in the presence of a nuclear spin bath of sufficient concentration. This suppression enhances the efficacy of dynamical decoupling techniques, resulting in increased coherence times for multi-spin-qubit systems, thus paving the way for applications in quantum information, sensing and metrology. C1 [Bar-Gill, N.; Belthangady, C.; Le Sage, D.; Walsworth, R.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Bar-Gill, N.; Lukin, M. D.; Yacoby, A.; Walsworth, R.] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA. [Pham, L. M.] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA. [Cappellaro, P.] MIT, Dept Nucl Sci & Engn, Cambridge, MA 02139 USA. [Maze, J. R.] Pontificia Univ Catolica Chile, Dept Phys, Santiago 7820436, Chile. RP Bar-Gill, N (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM nbar-gill@cfa.harvard.edu; rwalsworth@cfa.harvard.edu RI Cappellaro, Paola/B-1413-2010; OI Cappellaro, Paola/0000-0003-3207-594X; Le Sage, David/0000-0003-1678-9491 FU NIST; NSF [DMG-1005926]; US Army Research Office; DARPA FX We gratefully acknowledge fruitful discussions with Patrick Maletinsky and Shimon Kolkowitz; and assistance with samples by Daniel Twitchen and Matthew Markham (Element 6) and Patrick Doering and Robert Linares (Apollo). This work was supported by NIST, NSF, US Army Research Office and DARPA (QuEST and QuASAR programs). PC was partially funded by NSF under grant no. DMG-1005926. NR 43 TC 60 Z9 60 U1 2 U2 42 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 2041-1723 J9 NAT COMMUN JI Nat. Commun. PD MAY PY 2012 VL 3 AR 858 DI 10.1038/ncomms1856 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 949XP UT WOS:000304611400053 PM 22617298 ER PT J AU Mehdiabadi, NJ Mueller, UG Brady, SG Himler, AG Schultz, TR AF Mehdiabadi, Natasha J. Mueller, Ulrich G. Brady, Sean G. Himler, Anna G. Schultz, Ted R. TI Symbiont fidelity and the origin of species in fungus-growing ants SO NATURE COMMUNICATIONS LA English DT Article ID LEAF-CUTTING ANTS; MULTIPLE SEQUENCE ALIGNMENT; ATTINE ANT; PHYLOGENETIC ANALYSIS; COEVOLUTION; FORMICIDAE; EVOLUTION; MUTUALISM; COOPERATION; AGRICULTURE AB A major problem in evolutionary biology is explaining the success of mutualism. Solving this problem requires understanding the level of fidelity between interacting partners. Recent studies have proposed that fungus-growing ants and their fungal cultivars are the products of 'diffuse' coevolution, in which single ant and fungal species are not exclusive to one another. Here we show for ants and associated fungi in the Cyphomyrmex wheeleri species group that each ant species has been exclusively associated with a single fungal cultivar 'species' for millions of years, even though alternative cultivars are readily available, and that rare shifts to new cultivars are associated with ant speciation. Such long-term partner fidelity may have facilitated 'tight' ant-fungus coevolution, and shifts to new fungal cultivars may have had a role in the origin of new ant species. C1 [Mehdiabadi, Natasha J.; Brady, Sean G.; Schultz, Ted R.] Smithsonian Inst, Natl Museum Nat Hist, Dept Entomol, Washington, DC 20013 USA. [Mehdiabadi, Natasha J.; Brady, Sean G.; Schultz, Ted R.] Smithsonian Inst, Natl Museum Nat Hist, Labs Analyt Biol, Washington, DC 20013 USA. [Mehdiabadi, Natasha J.; Schultz, Ted R.] Univ Maryland, Dept Entomol, College Pk, MD 20742 USA. [Mueller, Ulrich G.; Himler, Anna G.] Univ Texas Austin, Sect Integrat Biol, Austin, TX 78712 USA. [Mueller, Ulrich G.] Smithsonian Trop Res Inst, Balboa, Panama. [Himler, Anna G.] Univ Arizona, Dept Entomol, Tucson, AZ 85721 USA. RP Mehdiabadi, NJ (reprint author), Smithsonian Inst, Natl Museum Nat Hist, Dept Entomol, POB 37012, Washington, DC 20013 USA. EM Mehdiabadi@si.edu; schultzt@si.edu FU Smithsonian; NMNH Laboratories of Analytical Biology; NSF [DEB-0949689, DEB-0110073, DEB-0206372, IOS-0920138, EF-0431330] FX We thank Lee Weigt and other members of the Laboratories of Analytical Biology (NMNH) for their help and support throughout this project. We also thank Rachelle Adams, Donat Agosti, Stefan Cover, Cameron Currie, Nicole Gerardo, Lacey Loudermilk, Alexander Mikheyev, Shauna Price, Kaci Richardson, Andre Rodrigues, Jarrod Scott, Adam Smith, Heraldo Vasconcelos, Santiago Villamarin and Tanya Vo for collecting colonies. We thank Patrick Abbot, Jerry Coyne and Phil Ward for improving earlier versions of the manuscript and Paul Armstrong, Faridah Nor Dahlan, Jeffrey Hunt, Heather Ishak, Matthew Kweskin, Eugenia Okonski, Steve Rehner, Jeffrey Sosa-Calvo, Phil Ward, Hong Zhao and members of the Mueller Lab and the Schultz Lab for help and discussion. Funding was provided by a Smithsonian Postdoctoral Fellowship (NJM), a Smithsonian Scholarly Studies grant (TRS, SGB), NMNH Laboratories of Analytical Biology (NJM, Lee Weigt), and NSF grants DEB-0949689 (TRS, NJM, UGM), DEB-0110073 (UGM, TRS), DEB-0206372 (AGH, UGM), IOS-0920138 (UGM) and EF-0431330 (SGB, TRS). NR 53 TC 20 Z9 20 U1 3 U2 49 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 2041-1723 J9 NAT COMMUN JI Nat. Commun. PD MAY PY 2012 VL 3 AR 840 DI 10.1038/ncomms1844 PG 7 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 949XP UT WOS:000304611400035 PM 22588302 ER PT J AU Herrera, F Manchester, SR Jaramillo, C AF Herrera, Fabiany Manchester, Steven R. Jaramillo, Carlos TI Permineralized fruits from the late Eocene of Panama give clues of the composition of forests established early in the uplift of Central America SO REVIEW OF PALAEOBOTANY AND PALYNOLOGY LA English DT Article DE Dracontomelon; Eocene; Humiriaceae; Neotropical rainforests; Panama; Vitaceae ID NEOTROPICAL RAIN-FOREST; SOUTH-AMERICA; CERREJON FORMATION; SEED MORPHOLOGY; LATE PALEOCENE; VITACEAE; COLOMBIA; PALEOGEOGRAPHY; BIOGEOGRAPHY; PHYLOGENY AB Central American rainforests are among the most diverse biomes in the world today. However, we know little about their history because of a poor fossil record. Here, we augment previous studies based on fossil pollen of Panama with an investigation of eight species of endocarps and seeds from an upper Eocene locality near Tonosi on the Pacific coast of central Panama. Affinities at the family/order level include: Arecaceae, Vitaceae, Humiriaceae, Anacardiaceae, and Lamiales. Biogeographically, two of the Tonosi fossil taxa, Dracontomelon and cf. Leen, are interesting because they occur today only in lowland rainforests of the Old World. The new fossil genus Saxuva, together with cf. Leea, are the earliest evidence of Vitaceae (the grape family) in the Neotropics. The new genus Lacunofructus is the oldest record for Humiriaceae and supports the previously suggested Neotropical origin for the family. We interpret the Tonosi macroflora as a record of the vegetation which colonized land that emerged as part of the Eocene volcanic arc in southern Central America. (C) 2012 Elsevier B.V. All rights reserved. C1 [Herrera, Fabiany; Manchester, Steven R.] Univ Florida, Dept Biol, Florida Museum Nat Hist, Gainesville, FL 32611 USA. [Herrera, Fabiany; Jaramillo, Carlos] Smithsonian Trop Res Inst, Balboa 084303092, Ancon, Panama. RP Herrera, F (reprint author), Univ Florida, Dept Biol, Florida Museum Nat Hist, Gainesville, FL 32611 USA. EM fherrera@flmnh.ufl.edu FU PCP PIRE (Partnerships for International Research and Education); U.S. NSF (National Science Foundation) [0966884]; Evolving Earth Foundation; Geological Society of America Foundation; Asociacion Colombiana de Geologos y Geofisicos del Petroleo-ARES; Smithsonian Institution; Gary S. Morgan Student Research Award; Lewis & Clark Foundation-American Philosophical Society; NSF [EF-0431266, BSR-0743474, DEB-0733725]; Mark Tupper and Ricardo Perez SA FX This research was made possible through funding from PCP PIRE (Partnerships for International Research and Education) supported by the U.S. NSF (National Science Foundation) grant 0966884 (OISE, EAR, DRL). From the Evolving Earth Foundation, the Geological Society of America Foundation, the Asociacion Colombiana de Geologos y Geofisicos del Petroleo-ARES, the Smithsonian Institution, the Gary S. Morgan Student Research Award, and the Lewis & Clark Foundation-American Philosophical Society to F. Herrera; NSF grants EF-0431266 and BSR-0743474 to S.R. Manchester; NSF grant DEB-0733725 and funding provided by Mark Tupper and Ricardo Perez SA to C. Jaramillo. We thank Bruce Tiffney and one anonymous reviewer for their constructive comments and Giovanni Bedoya for nomenclatural suggestions. We thank Bruce MacFadden, Austin Hendy, Alexis Rojas, Roger Portell, Catalina Pimiento, Monica Carvalho, Camila Martinez, Camilo Montes, Gary Morgan, Aaron Wood, Luz Oviedo, Claudia Grant, and Maria Ines Barreto for their assistance in the field trips. Terry Lott provided helpful reviews of the manuscript. Iju Chen provided photos of extant seeds and helpful comments about the systematic of the Vitaceae fossils. F. Herrera thanks Benjamin Himschoot for his support. NR 54 TC 11 Z9 11 U1 0 U2 16 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0034-6667 EI 1879-0615 J9 REV PALAEOBOT PALYNO JI Rev. Palaeobot. Palynology PD MAY 1 PY 2012 VL 175 BP 10 EP 24 DI 10.1016/j.revpalbo.2012.02.007 PG 15 WC Plant Sciences; Paleontology SC Plant Sciences; Paleontology GA 950ZH UT WOS:000304689900002 ER PT J AU Peters, VE Carroll, CR AF Peters, Valerie E. Carroll, C. Ronald TI Temporal variation in coffee flowering may influence the effects of bee species richness and abundance on coffee production SO AGROFORESTRY SYSTEMS LA English DT Article DE Agroforestry; Bees; Climate; Shade-coffee; Phenology ID PLANT-POLLINATOR INTERACTIONS; TROPICAL FORESTS; CROP POLLINATION; CLIMATE-CHANGE; LIFE-HISTORY; PHENOLOGY; DENSITY; POLLEN; MANAGEMENT; DIVERSITY AB Accurately estimating the contribution of pollinators to production in crop species is important but could be challenging for species that are widely cultivated. One factor that may influence the pollinator-production relationship across regions is phenology, or the timing of recurring biological events, because crop phenology can be proximately controlled by climatic variables and phenology can affect plant reproductive success. For the economically important crop, coffee (), at least three aspects of flowering phenology (onset, density and frequency) are influenced by precipitation, which varies across coffee's cultivated range. Of these aspects of flowering phenology, flower density may particularly impact production in coffee because high-density flowering can severely limit outcrossing which is a major contributor to high yields and larger, high quality beans. We studied the coffee plant-pollinator interaction over 3 years and across two distinct types of coffee blooms: (1) low-density, synchronous flowering and (2) high-density, synchronous (mass) flowering. Bee species richness was similar for four out of five flowering periods (9.8 +/- A 2.7 95% CI), but nearly tripled during one high-density flowering period (26 +/- A 8.6 95% CI). During low-density flowering coffee fruit set rates were varied, but when coffee flowered at high-density, initial fruit set rates remained close to 60% (the rate obtained from manual self-pollination of coffee flowers in pollination experiments). We discuss how changing precipitation patterns may alter coffee flowering phenology and the coffee plant-pollinator relationship, providing insight into how climate change may influence this interaction as well as the resultant coffee production. C1 [Peters, Valerie E.; Carroll, C. Ronald] Univ Georgia, Odum Sch Ecol, Athens, GA 30602 USA. RP Peters, VE (reprint author), Smithsonian Conservat Biol Inst, Natl Zool Pk, 3001 Connecticut Ave NW, Washington, DC 20008 USA. EM cazamosca@gmail.com FU EarthWatch Institute FX This research was supported by grants from the EarthWatch Institute. We thank all the EarthWatch volunteers and two field assistants, M. Garro Cruz and R. Rojas Herrera. We are especially grateful for the support of the individual farmers and for their hospitality, without their support and willingness to open their farms to research this study would not have been possible, O. Salazar, A. Vega, G. Lobo, R. Leiton, O. Ramirez and O. Garro. NR 41 TC 3 Z9 4 U1 10 U2 79 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0167-4366 J9 AGROFOREST SYST JI Agrofor. Syst. PD MAY PY 2012 VL 85 IS 1 SI SI BP 95 EP 103 DI 10.1007/s10457-011-9476-2 PG 9 WC Agronomy; Forestry SC Agriculture; Forestry GA 943VH UT WOS:000304153100008 ER PT J AU Mascaro, J Hughes, RF Schnitzer, SA AF Mascaro, Joseph Hughes, R. Flint Schnitzer, Stefan A. TI Novel forests maintain ecosystem processes after the decline of native tree species SO ECOLOGICAL MONOGRAPHS LA English DT Article DE biodiversity-ecosystem function paradigm; diversity-productivity relationship; new forests; no-analog communities; novel ecosystems ID NUTRIENT-USE EFFICIENCY; TROPICAL DRY FOREST; LEAF LIFE-SPAN; PLANT DIVERSITY; PUERTO-RICO; PRIMARY SUCCESSION; PRODUCTIVITY RELATIONSHIPS; EUROPEAN GRASSLANDS; BIOLOGICAL INVASION; GLOBAL CHANGE AB The positive relationship between species diversity (richness and evenness) and critical ecosystem functions, such as productivity, carbon storage, and nutrient cycling, is often used to predict the consequences of extinction. At regional scales, however, plant species richness is mostly increasing rather than decreasing because successful plant species introductions far outnumber extinctions. If these regional increases in richness lead to local increases in diversity, a reasonable prediction is that productivity, carbon storage, and nutrient cycling will increase following invasion, yet this prediction has rarely been tested empirically. We tested this prediction in novel forest communities dominated by introduced species (similar to 90% basal area) in lowland Hawaiian rain forests by comparing their functionality to that of native forests. We conducted our comparison along a natural gradient of increasing nitrogen availability, allowing for a more detailed examination of the role of plant functional trait differences (specifically, N-2 fixation) in driving possible changes to ecosystem function. Hawaii is emblematic of regional patterns of species change; it has much higher regional plant richness than it did historically, due to >1000 plant species introductions and only; 71 known plant extinctions, resulting in an similar to 100% increase in richness. At local scales, we found that novel forests had significantly higher tree species richness and higher diversity of dominant tree species. We further found that aboveground biomass, productivity, nutrient turnover (as measured by soil-available and litter-cycled nitrogen and phosphorus), and belowground carbon storage either did not differ significantly or were significantly greater in novel relative to native forests. We found that the addition of introduced N-2-fixing tree species on N-limited substrates had the strongest effect on ecosystem function, a pattern found by previous empirical tests. Our results support empirical predictions of the functional effects of diversity, but they also suggest basic ecosystem processes will continue even after dramatic losses of native species diversity if simple functional roles are provided by introduced species. Because large portions of the Earth's surface are undergoing similar transitions from native to novel ecosystems, our results are likely to be broadly applicable. C1 [Mascaro, Joseph; Schnitzer, Stefan A.] Univ Wisconsin, Dept Biol Sci, Milwaukee, WI 53211 USA. [Hughes, R. Flint] US Forest Serv, Inst Pacific Isl Forestry, USDA, Hilo, HI 96720 USA. [Schnitzer, Stefan A.] Smithsonian Trop Res Inst, Balboa, Panama. RP Mascaro, J (reprint author), Carnegie Inst Sci, Dept Global Ecol, 260 Panama St, Stanford, CA 94305 USA. EM jmascaro@stanford.edu OI Schnitzer, Stefan/0000-0002-2715-9455 FU National Science Foundation; Doctoral Dissertation Improvement Grant [DEB-0808498]; University of Wisconsin-Milwaukee (UWM); USDA Forest Service Institute for Pacific Islands Forestry FX We thank A. Uowolo, G. Sanchez, K. Nelson-Kaula, N. Crabbe, M. Kaeske, J. Brown, R. McDowell, and C. McFadden for laboratory and field assistance; P. Hart, K. Carlson, N. Zimmerman, S. Cordell, and other USFS-IPIF and USGS-BRD personnel for contributing vegetation data; and J. Baldwin for assisting in analyses. The collection of below-ground data was made possible by the University of Hawai'i Pacific Internship Program for Exploring Science. G. Asner, R. Laungani, K. McElligott, and two anonymous reviewers commented on a previous draft of the manuscript, which also benefited from insightful discussion with A. Lugo, J. Kellner, C. Farrior, E. Marris, R. MacKenzie, C. Giardina, T. Varga, N. Lasca, J. Karron, and E. Young, as well as participants of a workshop on novel ecosystems at the Ecological Society of America meeting in Milwaukee, Wisconsin, in 2008. This research was supported by a National Science Foundation Graduate Research Fellowship to J. Mascaro, a Doctoral Dissertation Improvement Grant to S. A. Schnitzer, R. F. Hughes, and J. Mascaro (DEB-0808498), a University of Wisconsin-Milwaukee (UWM) Golda Meir Library Scholar Award to J. Mascaro, and a UWM Graduate Fellowship to J. Mascaro. Additional funding and logistical support was provided by the USDA Forest Service Institute for Pacific Islands Forestry. NR 112 TC 46 Z9 46 U1 15 U2 153 PU ECOLOGICAL SOC AMER PI WASHINGTON PA 1990 M STREET NW, STE 700, WASHINGTON, DC 20036 USA SN 0012-9615 EI 1557-7015 J9 ECOL MONOGR JI Ecol. Monogr. PD MAY PY 2012 VL 82 IS 2 BP 221 EP 238 DI 10.1890/11-1014.1 PG 18 WC Ecology SC Environmental Sciences & Ecology GA 946RG UT WOS:000304370800005 ER PT J AU Estrada-Villegas, S Mcgill, BJ Kalko, EKV AF Estrada-Villegas, Sergio Mcgill, Brian J. Kalko, Elisabeth K. V. TI Climate, habitat, and species interactions at different scales determine the structure of a Neotropical bat community SO ECOLOGY LA English DT Article DE acoustic monitoring; community composition and structure; Emballonuridae; emergent properties; insectivorous bats; Mormoopidae; Neotropics; Panama; rainfall gradient; spatial scale; variance partitioning; Vespertilionidae ID AERIAL INSECTIVOROUS BATS; TROPICAL FOREST; EATING BATS; RICHNESS; DIVERSITY; ECOLOGY; LANDSCAPE; PATTERNS; URBANIZATION; ECHOLOCATION AB Climate, habitat, and species interactions are factors that control community properties (e.g., species richness, abundance) across various spatial scales. Usually, researchers study how a few properties are affected by one factor in isolation and at one scale. Hence, there are few multi-scale studies testing how multiple controlling factors simultaneously affect community properties at different scales. We ask whether climate, habitat structure, or insect resources at each of three spatial scales explains most of the variation in six community properties and which theory best explains the distribution of selected community properties across a rainfall gradient. We studied a Neotropical insectivorous bat ensemble in the Isthmus of Panama with acoustic monitoring techniques. Using climatological data, habitat surveys, and insect captures in a hierarchical sampling design we determined how much variation of the community properties was explained by the three factors employing two approaches for variance partitioning. Our results revealed that most of the variation in species richness, total abundance, and feeding activity occurred at the smallest spatial scale and was explained by habitat structure. In contrast, climate at large scales explained most of the variation in individual species' abundances. Although each species had an idiosyncratic response to the gradient, species richness peaked at intermediate levels of precipitation, whereas total abundance was very similar across sites, suggesting density compensation. All community properties responded in a different manner to the factor and scale under consideration. C1 [Estrada-Villegas, Sergio] McGill Univ, Dept Biol, Montreal, PQ H3A 1B1, Canada. [Estrada-Villegas, Sergio; Kalko, Elisabeth K. V.] Smithsonian Trop Res Inst, Balboa, Panama. [Mcgill, Brian J.] Univ Maine, Sch Biol & Ecol, Orono, ME 04469 USA. [Mcgill, Brian J.] Univ Maine, Sustainabil Solut Initiat, Orono, ME 04469 USA. [Kalko, Elisabeth K. V.] Univ Ulm, Inst Expt Ecol, D-89069 Ulm, Germany. RP Estrada-Villegas, S (reprint author), McGill Univ, Dept Biol, 1205 Docteur Penfield Ave, Montreal, PQ H3A 1B1, Canada. EM sergio.estradavillegas@mail.mcgill.ca RI McGill, Brian/A-3476-2008 OI McGill, Brian/0000-0002-0850-1913 FU Neotropical Environment Option; Smithsonian Tropical Research Institute; NSERC FX S. Estrada-Villegas thanks Laura Jara Reyes for her invaluable support throughout the project. Julie Messier, Richard Feldman, Peter White, Christoph Meyer, Maria del Carmen Ruiz-Jaen, Andrew Gonzales, and Brock Fenton provided great help and valuable comments to the manuscript. We thank the Neotropical Environment Option and the Smithsonian Tropical Research Institute for excellent logistics and funding. NSERC provided funding to B. J. McGill. S. Estrada-Villegas dedicates this work to his mentor and friend, Elisabeth Kalko: From the first moment "Eli" and I met, she overwhelmed me with joy, candor, and generosity. As her pupil, we shared the delight for fieldwork and the marvels of the tropics: We stood in awe at the Tabebuia blooming or any torrential thunderstorm. As her colleague, I tried to be as graceful, as curious, as bright, and as reliable as she was with every endeavor. Eli's sense of duty is yet to be matched. As a friend, her enthusiasm, her right-timed and sincere counsel, her generosity and humbleness will be utterly missed. This work represents only a fraction of her passions: tropical bats, echolocation, and community ecology. NR 67 TC 8 Z9 8 U1 3 U2 82 PU ECOLOGICAL SOC AMER PI WASHINGTON PA 1990 M STREET NW, STE 700, WASHINGTON, DC 20036 USA SN 0012-9658 EI 1939-9170 J9 ECOLOGY JI Ecology PD MAY PY 2012 VL 93 IS 5 BP 1183 EP 1193 PG 11 WC Ecology SC Environmental Sciences & Ecology GA 946QK UT WOS:000304368100023 PM 22764504 ER PT J AU Ponzio, MF Monfort, SL Busso, JM Carlini, VP Ruiz, RD De Cuneo, MF AF Ponzio, Marina F. Monfort, Steven L. Busso, Juan Manuel Carlini, Valeria P. Ruiz, Ruben D. De Cuneo, Marta Fiol TI Adrenal activity and anxiety-like behavior in fur-chewing chinchillas (Chinchilla lanigera) SO HORMONES AND BEHAVIOR LA English DT Article DE Abnormal repetitive behavior; Fur-chewing; Stress; Urinary cortisol metabolite; Plus-maze ID OBSESSIVE-COMPULSIVE DISORDER; PLUS-MAZE; TRICHOTILLOMANIA; PREGNANCY; MICE AB Due to its complexity, in combination with a lack of scientific reports, fur-chewing became one of the most challenging behavioral problems common to captive chinchillas. In the last years, the hypothesis that fur-chewing is an abnormal repetitive behavior and that stress plays a role in its development and performance has arisen. Here, we investigated whether a relationship existed between the expression and intensity of fur-chewing behavior, elevated urinary cortisol excretion and anxiety-related behaviors. Specifically, we evaluated the following parameters in behaviorally normal and fur-chewing animals of both sexes: 1) mean concentrations of urinary cortisol metabolites and 2) anxiety-like behavior in an elevated plus-maze test. Urinary cortisol metabolites were higher only in females that expressed the most severe form of the fur-chewing behavior (P <= 0.05). Likewise, only fur-chewing females exhibited increased (P <= 0.05) anxiety-like behaviors associated with the elevated plus-maze test. Overall, these data provided additional evidence to support the concept that fur-chewing is a manifestation of physiological stress in chinchilla, and that a female sex bias exists in the development of this abnormal behavior. (C) 2012 Elsevier Inc. All rights reserved. C1 [Ponzio, Marina F.; Busso, Juan Manuel; Carlini, Valeria P.; Ruiz, Ruben D.; De Cuneo, Marta Fiol] Univ Nacl Cordoba, Fac Ciencias Med, Inst Fis, RA-5000 Cordoba, Argentina. [Monfort, Steven L.] Smithsonian Conservat Biol Inst, Front Royal, VA USA. RP Ponzio, MF (reprint author), X5000ESU, RA-1085 Cordoba, Argentina. EM mponzio@mater.fcm.unc.edu.ar FU Ministerio de Ciencia y Tecnologia de la Provincia de Cordoba; FONCyT; SECyT-UNC; Smithsonian Conservation Biology Institute FX Financial support was provided by Ministerio de Ciencia y Tecnologia de la Provincia de Cordoba, FONCyT, SECyT-UNC, and the Smithsonian Conservation Biology Institute. All Argentinean authors are established investigators from the Consejo Nacional de Investigaciones Cientificas y Tecnologicas (CONICET), Argentina. NR 30 TC 7 Z9 7 U1 1 U2 15 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0018-506X J9 HORM BEHAV JI Horm. Behav. PD MAY PY 2012 VL 61 IS 5 BP 758 EP 762 DI 10.1016/j.yhbeh.2012.03.017 PG 5 WC Behavioral Sciences; Endocrinology & Metabolism SC Behavioral Sciences; Endocrinology & Metabolism GA 946GP UT WOS:000304339800013 PM 22504323 ER PT J AU Jones, CE Lounibos, LP Marra, PP Kilpatrick, AM AF Jones, Christy E. Lounibos, L. Philip Marra, Peter P. Kilpatrick, A. Marm TI Rainfall Influences Survival of Culex pipiens (Diptera: Culicidae) in a Residential Neighborhood in the Mid-Atlantic United States SO JOURNAL OF MEDICAL ENTOMOLOGY LA English DT Article DE Culex pipiens; dispersal; mosquito; survival; West Nile virus ID WEST-NILE-VIRUS; MARK-RELEASE-RECAPTURE; TARSALIS DIPTERA; SOUTHERN CALIFORNIA; MOSQUITOS DIPTERA; HOST SELECTION; BRIDGE VECTOR; AEDES-AEGYPTI; TRANSMISSION; ECOLOGY AB Measurement of the survival and dispersal rates of mosquito vectors is an important step in designing and implementing control strategies. Vector survival plays a key role in determining the intensity of pathogen transmission, and vector movement determines the spatial scale on which control efforts must operate to be effective. We provide the first estimates of field survival and dispersal rates for Culex pipiens L. in North America, an important enzootic and bridge vector for West Nile virus (WNV). We conducted mark-release-recapture studies in a residential area near Washington, DC, in two consecutive years and fit nonlinear regression models to the recapture data that incorporate weather information into survival and recapture probabilities. We found that daily survival rates were not significantly different between the 2 yr but were negatively affected by rainfall. The daily survival rate was 0.904 +/- 0.037 (SE), which implies an average longevity of 10.4 d. As with other vector-borne pathogens, the measured survival rate suggests that at our site the majority of WNV-infected Cx. pipiens mosquitoes may perish before becoming infectious (being able to transmit WNV to hosts). We found relatively little evidence of dispersal after the initial night after release. Our results suggest that transmission of WNV and other pathogens transmitted by Cx. pipiens may be highly local and they highlight the importance of factors that influence survival of mosquito vectors. C1 [Jones, Christy E.; Lounibos, L. Philip] Univ Florida, Florida Med Entomol Lab, Vero Beach, FL 32962 USA. [Marra, Peter P.] Natl Zool Pk, Smithsonian Conservat Biol Inst, Migratory Bird Ctr, Washington, DC 20008 USA. RP Jones, CE (reprint author), Univ Florida, Florida Med Entomol Lab, 200 9th St SE, Vero Beach, FL 32962 USA. EM chrjson@yahoo.com; akilpatr@ucsc.edu FU NSF as part of NSF-NIH [EF-0914866]; NIH [1R01AI090159-01] FX We thank Mary Ashley Laine, Alex Martin, Alex Arp, Katie Jensen, and Juraj Cech for assistance in the field; George O'Meara for helpful advice and discussion; and the many residents of Takoma Park who allowed us to trap mosquitoes in their yards. We thank K. Feldman and R. Gibbs for support, guidance, and/or permission to perform this study. This work was funded by NSF grant EF-0914866 as part of the joint NSF-NIH Ecology of Infectious Disease program, and NIH grant 1R01AI090159-01. NR 35 TC 17 Z9 18 U1 1 U2 34 PU OXFORD UNIV PRESS INC PI CARY PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA SN 0022-2585 EI 1938-2928 J9 J MED ENTOMOL JI J. Med. Entomol. PD MAY PY 2012 VL 49 IS 3 BP 467 EP 473 DI 10.1603/ME11191 PG 7 WC Entomology; Veterinary Sciences SC Entomology; Veterinary Sciences GA 941TU UT WOS:000303989900005 PM 22679852 ER PT J AU Cadena, E Bourque, JR Rincon, AF Bloch, JI Jaramillo, CA MacFadden, BJ AF Cadena, Edwin Bourque, Jason R. Rincon, Aldo F. Bloch, Jonathan I. Jaramillo, Carlos A. MacFadden, Bruce J. TI NEW TURTLES (CHELONIA) FROM THE LATE EOCENE THROUGH LATE MIOCENE OF THE PANAMA CANAL BASIN SO JOURNAL OF PALEONTOLOGY LA English DT Article ID SIDE-NECKED TURTLES; SOUTH-AMERICA; TESTUDINES; HISTORY; GENUS; EVOLUTION AB Four distinct fossil turtle assemblages (Chelonia) are recognized from the Panama Canal Basin. The oldest, from the late Eocene-early Oligocene Gatuncillo Formation, is dominated by podocnemidid pleurodires. The early Miocene Culebra Formation includes both podocnemidids and trionychids. The early to middle Miocene Cucaracha Formation includes taxa classified in Geoemydidae (including Rhinoclemmys panamaensis n. sp.), Kinosternidae (represented by Staurotypus moschus n. sp.), large testudinids, trionychids, and podocnemidids, and finally, the late Miocene Gatun Formation records cheloniid sea turtles. These fossils include the oldest known representatives of Rhinoclemmys, the oldest record of kinosternids in Central America with a more extensive southern paleodistribution for Staurotypus and staurotypines in general, early occurrences of giant tortoises in the Neotropics, the oldest occurrence of soft-shell turtles in the tropics, the oldest late Eocene-early Oligocene Neotropical occurrences of podocnemidids. The Panamanian fossil turtles represent clades that are primarily endemic to North America, showing their very early arrival into the Neotropics prior to the complete emergence of the Isthmus of Panama, as well as their first contact with Caribbean-South American pleurodires by the early Miocene. C1 [Cadena, Edwin; Bourque, Jason R.; Rincon, Aldo F.; Bloch, Jonathan I.; MacFadden, Bruce J.] Univ Florida, Florida Museum Nat Hist, Gainesville, FL 32611 USA. [Cadena, Edwin; Jaramillo, Carlos A.] Smithsonian Trop Res Inst, Panama City 340020948, AA, Panama. RP Cadena, E (reprint author), Univ Florida, Florida Museum Nat Hist, Dickinson Hall, Gainesville, FL 32611 USA. EM eacadena@ncsu.edu; jbourque@flmnh.ufl.edu; jbloch@flmnh.ufl.edu; jaramilloc@si.edu OI Bloch, Jonathan/0000-0003-1484-6931 FU National Science Foundation [OISE 0638810, EAR 0642528, EAR 0824299, PIRE 0966884]; Smithsonian Institution; Panama Canal Authority; SENACYT; Florida Museum of Natural History; M. Tupper; R. Perez SA FX Funding for this project came from National Science Foundation grants OISE 0638810, EAR 0642528, and EAR 0824299, PIRE 0966884 (OISE, EAR, DRL), the Smithsonian Institution, the Panama Canal Authority, M. Tupper, SENACYT, R. Perez SA, the Florida Museum of Natural History Miss Lucy Dickinson Fellowship. Thanks go to the Authority of the Panama Canal for access to the Panama Canal areas. Thanks for access to collections to K. de Querioz, J. Jacobs (Smithsonian National Museum of Natural History, Washington, USA); E. Gaffney and C. Mehling, (Fossil Amphibians, Reptiles, and Birds Collections, Division of Paleontology, American Museum of Natural History, New York, U.S.A.); P. Pritchard (Chelonian Research Institute, Oviedo, Florida U.S.A.); R. Rowe (Utah Museum of Natural History, Salt Lake City, Utah U.S.A.), K. Krysko (Florida Museum of Natural History, Herpetology collection, Gainesville, Florida U.S.A.), R. Hulbert, Jr. (Florida Museum of Natural History, Vertebrate Paleontology collection, Gainesville, Florida U.S.A.). Special thanks to N. Cannarozzi (who found Rhinoclemmys panamaensis holotype), S. Moron, A. Gomez, L. Grawe, and all other paleontologists and geologists working at the Panama Canal Basin. NR 64 TC 15 Z9 18 U1 1 U2 11 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA SN 0022-3360 EI 1937-2337 J9 J PALEONTOL JI J. Paleontol. PD MAY PY 2012 VL 86 IS 3 BP 539 EP 557 PG 19 WC Paleontology SC Paleontology GA 944DS UT WOS:000304179200013 ER PT J AU Plotkin, H Clarke, RS McCoy, TJ Corrigan, CM AF Plotkin, Howard Clarke, Roy S., Jr. McCoy, Timothy J. Corrigan, Catherine M. TI The Old Woman, California, IIAB iron meteorite SO METEORITICS & PLANETARY SCIENCE LA English DT Review AB The Old Woman meteorite, discovered in March 1976 by two prospectors searching for a fabled lost Spanish gold mine in mountains similar to 270 km east of Los Angeles, has achieved the status of a legend among meteorite hunters and collectors. The question of the ownership of the 2753 kg group IIAB meteorite, the second largest ever found in the United States (34 degrees 28'N, 115 degrees 14'W), gave rise to disputes involving the finders, the Bureau of Land Management, the Secretary of the Department of the Interior, the State of California, the California members of the U.S. Congress, various museums in California, the Smithsonian Institution, and the Department of Justice. Ultimately, ownership of the meteorite was transferred to the Smithsonian under the powers of the 1906 Antiquities Act, a ruling upheld in a U.S. District Court and a U.S. Court of Appeals. After additional debate, the Smithsonian removed a large cut for study and curation, and for disbursement of specimens to qualified researchers. The main mass was then returned to California on long-term loan to the Bureau of Land Managements Desert Discovery Center in Barstow. The Old Woman meteorite litigation served as an important test case for the ownership and control of meteorites found on federal lands. The Old Woman meteorite appears to be structurally unique in containing both hexahedral and coarsest octahedral structures in the same mass, unique oriented schreibersites within hexahedral areas, and polycrystalline parent austenite crystals. These structures suggest that different portions of the meteorite may have transformed via different mechanisms upon subsolidus cooling, making the large slices of Old Woman promising targets for future research. C1 [Plotkin, Howard] Univ Western Ontario, Dept Philosophy, London, ON N6A 3K7, Canada. [Clarke, Roy S., Jr.; McCoy, Timothy J.; Corrigan, Catherine M.] Smithsonian Inst, Dept Mineral Sci, Natl Museum Nat Hist, Washington, DC 20013 USA. RP Plotkin, H (reprint author), Univ Western Ontario, Dept Philosophy, London, ON N6A 3K7, Canada. EM hplotkin@rogers.com FU Smithsonian Institution's Edward P. and Rebecca Rogers Henderson Endowment FX First and foremost, the authors thank Tim Rose, Department of Mineral Sciences, Smithsonian Institution, National Museum of Natural History, for the hours spent on careful preparation and cutting of the Old Woman meteorite. The authors also thank the staff of the Office of the Smithsonian Institution Archives, particularly Pam Henson and Brian Daniels, for their assistance in locating relevant documents. We thank former Smithsonian Assistant General Counsel George S. Robinson, who provided helpful comments on an earlier draft of the manuscript. We thank Nicole Lunning, Department of Mineral Sciences, Smithsonian Institution, National Museum of Natural History, for the preparation of the maps and figures. We thank Katrina Jackson, former Smithsonian summer intern, for her work on Scanning Electron Microscope imagery of the meteorite. We are particularly grateful to Ed Scott and Ursula Marvin, who provided insightful reviews. The section on the metallography of Old Woman was dramatically modified as a result. Finally, we gratefully acknowledge the Smithsonian Institution's Edward P. and Rebecca Rogers Henderson Endowment for travel and research funding. NR 60 TC 1 Z9 1 U1 1 U2 3 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1086-9379 J9 METEORIT PLANET SCI JI Meteorit. Planet. Sci. PD MAY PY 2012 VL 47 IS 5 BP 929 EP 946 DI 10.1111/j.1945-5100.2012.01348.x PG 18 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 945UD UT WOS:000304300900011 ER PT J AU Horton, DE Poulsen, CJ Montanez, IP DiMichele, WA AF Horton, Daniel E. Poulsen, Christopher J. Montanez, Isabel P. DiMichele, William A. TI Eccentricity-paced late Paleozoic climate change SO PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY LA English DT Article DE Pangaea; Cyclothems; Milankovitch; Ice sheet response to climate; Cyclostratigraphy; Carbon dioxide; Orbital forcing; Late Paleozoic ice age; Tropical climate ID TROPICAL RAIN-FORESTS; TRANSFER SCHEME LSX; NORTH-AMERICA; SEA-LEVEL; PENNSYLVANIAN CYCLOTHEMS; ICE-AGE; MODEL; HISTORY; CYCLES; PLANT AB Cyclic sedimentary deposits characterize low-latitude late Paleozoic successions and preserve evidence of dynamic climate change on the Pangaean supercontinent. Although their orbitally paced glacioeustatic origins are widely accepted, their climatic signatures are open to interpretation. In this study, we utilize the GENESIS general circulation model (GCM) coupled to dynamic ice sheet and ecosystem components, to explore the response of low-latitude continental climate and high-latitude ice sheets to orbital and atmospheric pCO(2) forcing. Our results suggest that atmospheric pCO(2) concentration exerts the primary control over low-latitude continental climate and high-latitude glaciation. Our experiments constrain the atmospheric pCO(2) window within which late Paleozoic climate was amenable to orbitally-driven glacial-interglacial fluctuations. The results suggest that both high-latitude ice-sheet accumulation and ablation and low-latitude climate change were paced by the eccentricity of Earth's orbit. Periods of high eccentricity amplified precession-driven changes in insolation and promoted high-latitude ice sheet volume fluctuations as well as increased low-latitude precipitation variability. When eccentricity was low, the amplification of precessionally-driven insolation fluctuations was reduced, which promoted high-latitude continental ice sheet stability and less variable low-latitude precipitation. Based on these modeling results we discuss the implications of eccentricity paced precessional-scale climatic changes on low-latitude Pangaean depositional environments. (C) 2012 Elsevier B.V. All rights reserved. C1 [Horton, Daniel E.; Poulsen, Christopher J.] Univ Michigan, Dept Earth & Environm Sci, Ann Arbor, MI 48109 USA. [Montanez, Isabel P.] Univ Calif Davis, Dept Geol, Davis, CA 95616 USA. [DiMichele, William A.] Smithsonian Inst, Natl Museum Nat Hist MRC 121, Washington, DC 20560 USA. RP Horton, DE (reprint author), Stanford Univ, Dept Environm Earth Syst Sci, 473 Via Ortega, Stanford, CA 94305 USA. EM danethan@stanford.edu; poulsen@umich.edu; ipmontanez@ucdavis.edu; dimichel@si.edu RI DiMichele, William/K-4301-2012; Poulsen, Christopher/C-6213-2009; OI Poulsen, Christopher/0000-0001-5104-4271; Horton, Daniel/0000-0002-2065-4517 FU NSF [EAR-0544760, EAR-0545701, EAR-1024737]; Rocky Mountain Association of Geologists FX D.E.H. and C.J.P. were supported by NSF grant EAR-0544760. D.E.H. received additional support from the Rocky Mountain Association of Geologists Veterans Memorial Scholarship. I.P.M. was supported by NSF grant EAR-0545701 and EAR-1024737. We offer our thanks to the members of the Climate Change Research Laboratory at the University of Michigan for inspiring discussions and we thank T. Olszewski and an anonymous reviewer for constructive manuscript reviews. NR 55 TC 32 Z9 32 U1 4 U2 66 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0031-0182 J9 PALAEOGEOGR PALAEOCL JI Paleogeogr. Paleoclimatol. Paleoecol. PD MAY 1 PY 2012 VL 331 BP 150 EP 161 DI 10.1016/j.palaeo.2012.03.014 PG 12 WC Geography, Physical; Geosciences, Multidisciplinary; Paleontology SC Physical Geography; Geology; Paleontology GA 941PY UT WOS:000303976300012 ER PT J AU Stull, GW DiMichele, WA Falcon-Lang, HJ Nelson, WJ Elrick, S AF Stull, Gregory W. DiMichele, William A. Falcon-Lang, Howard J. Nelson, W. John Elrick, Scott TI Palaeoecology of Macroneuropteris scheuchzeri, and its implications for resolving the paradox of 'xeromorphic' plants in Pennsylvanian wetlands SO PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY LA English DT Article DE Pennsylvanian; Tropical; Seed fern; Pteridosperm; Xeromorphy; Coal swamp; Paleoecology ID TROPICAL RAIN-FORESTS; MIDCONTINENT NORTH-AMERICA; CENTRAL APPALACHIAN BASIN; PALEOZOIC ICE-AGE; SEED-FERN; ATMOSPHERIC OXYGEN; CLIMATE-CHANGE; GROWTH HABIT; NOVA-SCOTIA; MEDULLOSAN PTERIDOSPERMS AB The medullosan pteridosperm Macroneuropteris scheuchzeri (Hoffmann) Cleal, Shute & Zodrow was widespread and abundant in the Middle to Late Pennsylvanian forests of tropical Pangaea. On the basis of its thick cuticles, few adaxial stomata, sunken stomata, and dense trichomes, it has been inferred to be a xeromorphic plant. Here we test that hypothesis by analyzing its facies distribution, especially in relation to coals, at 273 site collections from similar to 45 stratigraphic horizons accessioned in the Smithsonian National Museum of Natural History, Washington, D.C., U.S.A. The collections represent mostly (par)autochthonous assemblages and cover the taxon's complete known temporal range west of the Appalachians in west-central Pangaea. Chi-square analysis of facies-occurrence data indicates that M. scheuchzeri had a strong preference for mineral-enriched wetlands that immediately preceded and followed the development of peat swamps and mires (coals), particularly during the late Middle Pennsylvanian (late Moscovian) times, coincident with a period of reduced polar ice volume. In the late Pennsylvanian, following an interval of global warming and tropical wetland reorganization, palaeoequatorial climate shifted to an overall drier mode. This was accompanied by the disappearance of M. scheuchzeri from Europe and its limitation, west of the Appalachians, to the wettest available habitats on the landscape. Thus, our data falsify the hypothesis that M. scheuchzeri was a conventional xerophyte, but highlight the paradox of a plant with apparent xeromorphic features confined to a wetland habitat. We consider several possible explanations for this association: (1) response to nutrient deficiency, (2) response to substrate salinity (due to growth in coastal mangrove habitats), (3) response to the composition of the Palaeozoic atmosphere, (4) return on investment (long leaf lifespan), and (5) phylogenetic constraint reflecting ancestral conditions. Our findings have broader implications for interpreting a wide variety of other Pennsylvanian wetland plants, which similarly show 'xermorphic' features. Published by Elsevier B.V. C1 [DiMichele, William A.] NMNH Smithsonian Inst, Dept Paleobiol, Washington, DC 20560 USA. [Stull, Gregory W.] Univ Florida, Dept Biol, Gainesville, FL 32611 USA. [Stull, Gregory W.] Univ Florida, Florida Museum Nat Hist, Gainesville, FL 32611 USA. [Falcon-Lang, Howard J.] Univ London, Dept Earth Sci, Egham TW20 0EX, Surrey, England. [Falcon-Lang, Howard J.] Univ Munster, Forsch Stelle Palaobot, Geol Palaontol Inst, D-48143 Munster, Germany. [Nelson, W. John; Elrick, Scott] Illinois State Geol Survey, Coal Sect, Champaign, IL 61820 USA. RP DiMichele, WA (reprint author), NMNH Smithsonian Inst, Dept Paleobiol, Washington, DC 20560 USA. EM dimichel@si.edu RI DiMichele, William/K-4301-2012 FU National Museum of Natural History; SI Endowment Funds; NERC [NE/F014120/2]; Humboldt Fellowship for Advanced Researchers FX GS acknowledges support from the Natural History Research Experiences (NHRE) internship program offered by the National Museum of Natural History. WD acknowledges support from the NMNH Small Grants program and the SI Endowment Funds. HFL acknowledges a NERC Advanced Fellowship (NE/F014120/2) held at Royal Holloway and a Humboldt Fellowship for Advanced Researchers held at the Universitat Munster. We thank Robyn Burnham for comments on the manuscript, Martin Buzas for discussion about the statistical analysis, Robert Hook for providing detailed information on Texas stratigraphy, Josephine Sanchez and Dan S. Chaney for assistance with photography and other tasks related to this work, and Hans Kerp for sharing his wide knowledge of Palaeozoic pteridosperms. Hermann Pfefferkorn and an anonymous reviewer made critical suggestions on an earlier version of this paper, which resulted in substantial improvements. We sincerely thank Philip Heckel for his advice on the stratigraphy that underlies Fig. 1, and Robert Wagner for sharing his thoughts on plant biostratigraphy and the distribution on Macroneuropteris scheuchzeri in Europe. We are also indebted to many coal-mine operators and private property owners for permission to collect fossils on their land. NR 154 TC 20 Z9 20 U1 4 U2 19 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0031-0182 EI 1872-616X J9 PALAEOGEOGR PALAEOCL JI Paleogeogr. Paleoclimatol. Paleoecol. PD MAY 1 PY 2012 VL 331 BP 162 EP 176 DI 10.1016/j.palaeo.2012.03.019 PG 15 WC Geography, Physical; Geosciences, Multidisciplinary; Paleontology SC Physical Geography; Geology; Paleontology GA 941PY UT WOS:000303976300013 ER PT J AU Chen, HD Zhang, J Ma, SL AF Chen, Hua-Dong Zhang, Jun Ma, Su-Li TI The kinematics of an untwisting solar jet in a polar coronal hole observed by SDO/AIA SO RESEARCH IN ASTRONOMY AND ASTROPHYSICS LA English DT Article DE Sun: activity; Sun: chromosphere; Sun: magnetic fields; Sun: flares; Sun: rotation ID H-ALPHA-SURGES; X-RAY JETS; MAGNETIC-FIELD STRENGTH; EXTREME-ULTRAVIOLET JETS; ACTIVE-REGION; FINE-STRUCTURE; EMERGING FLUX; HINODE XRT; QUIET SUN; MARCH 19 AB Using the multi-wavelength data from the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO) spacecraft, we study a jet occurring in a coronal hole near the northern pole of the Sun. The jet presented distinct upward helical motion during ejection. By tracking six identified moving features (MFs) in the jet, we found that the plasma moved at an approximately constant speed along the jet's axis. Meanwhile, the MFs made a circular motion in the plane transverse to the axis. Inferred from linear and trigonometric fittings to the axial and transverse heights of the six tracks, the mean values of the axial velocities, transverse velocities, angular speeds, rotation periods, and rotation radii of the jet are 114 km s(-1), 136 km s(-1), 0.81 degrees s(-1), 452 s and 9.8 x 10(3) km respectively. As the MFs rose, the jet width at the corresponding height increased. For the first time, we derived the height variation of the longitudinal magnetic field strength in the jet from the assumption of magnetic flux conservation. Our results indicate that at heights of 1 x 10(4) similar to 7 x 10(4) km from the base of the jet, the flux density in the jet decreases from about 15 to 3 G as a function of B = 0.5(R/R-circle dot - 1)(-0.84) (G) A comparison was made with other results in previous studies. C1 [Chen, Hua-Dong; Ma, Su-Li] China Univ Petr, Coll Sci, Qingdao 266555, Peoples R China. [Chen, Hua-Dong; Zhang, Jun] Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China. [Ma, Su-Li] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Chen, HD (reprint author), China Univ Petr, Coll Sci, Qingdao 266555, Peoples R China. EM hdchen@upc.edu.cn RI Ma, Suli/J-9141-2012; Ma, Suli/F-2232-2014 OI Ma, Suli/0000-0002-5431-6065 FU National Natural Science Foundation of China [11103090, 11025315, 40890161, 10921303, 40825014, 40890162]; CAS [KJCX2-YW-T04]; National Basic Research Program of China (973 Program) [2011CB811403]; Shandong Provincial Natural Science Foundation, China [ZR 2011AQ009] FX The authors sincerely thank the anonymous referee for very helpful and constructive comments that improved this paper. We are grateful to all the members of the Solar Magnetism and Activity group of National Astronomical Observatories of CAS for their invaluable help. We acknowledge the AIA team for easy access to the calibrated data. The AIA data are courtesy of SDO (NASA) and the AIA consortium. This work was supported by the National Natural Science Foundation of China (Grant Nos. 11103090, 11025315, 40890161, 10921303, 40825014, and 40890162), the CAS project KJCX2-YW-T04, the National Basic Research Program of China (973 Program, No. 2011CB811403), and the Shandong Provincial Natural Science Foundation, China (ZR 2011AQ009). NR 77 TC 21 Z9 21 U1 0 U2 7 PU NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES PI BEIJING PA 20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA SN 1674-4527 J9 RES ASTRON ASTROPHYS JI Res. Astron. Astrophys. PD MAY PY 2012 VL 12 IS 5 BP 573 EP 583 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 946WA UT WOS:000304387000009 ER PT J AU Montes, C Cardona, A McFadden, R Moron, SE Silva, CA Restrepo-Moreno, S Ramirez, DA Hoyos, N Wilson, J Farris, D Bayona, GA Jaramillo, CA Valencia, V Bryan, J Flores, JA AF Montes, Camilo Cardona, A. McFadden, R. Moron, S. E. Silva, C. A. Restrepo-Moreno, S. Ramirez, D. A. Hoyos, N. Wilson, J. Farris, D. Bayona, G. A. Jaramillo, C. A. Valencia, V. Bryan, J. Flores, J. A. TI Evidence for middle Eocene and younger land emergence in central Panama: Implications for Isthmus closure SO GEOLOGICAL SOCIETY OF AMERICA BULLETIN LA English DT Article ID TRACK ANNEALING KINETICS; CENTRAL-AMERICAN ISTHMUS; SINGLE-GRAIN AGES; SOUTH-AMERICA; STATISTICAL-MODELS; TECTONIC EVOLUTION; WESTERN COLOMBIA; HELIUM DIFFUSION; APATITE; FISSION AB The rise of the Isthmus of Panama, linked to a number of climatic, paleoceanographic, and biological events, has been studied mostly from indirect, often distal, geochemical and biotic evidence. We have upgraded existing geologic mapping in central Panama with more than 2000 field stations, over 40 petrographic analyses, and more than 30 new geochronological and thermochronological analyses. This data set suggests that the isthmus was an uninterrupted chain above sea level from late Eocene until at least late Miocene times. The basement complex of central Panama is a folded-faulted, similar to 3-km-thick arc sequence, intruded by granitoid bodies and onlapped by mildly deformed upper Eocene and Oligocene strata. Six U/Pb zircon ages in the granitoids-along with published geochronological data-reveal intense late Paleocene to middle Eocene magmatism (58-39 Ma), a temporary cessation of magmatic activity between 38 and 27 Ma, and renewed magmatism between 25 and 15 Ma in a position similar to 75 km south of the former magmatic axis. Thermochronological analyses in zircon (eight U-Th/He ages), and in apatite crystals (four U-Th/He ages and nine fission-track ages) obtained from a subset of 58-54 Ma granitoid bodies record a concordant Lutetian-age (47-42 Ma) cooling from similar to 200 degrees C to similar to 70 degrees C in similar to 5 m.y., and cooling below similar to 40 degrees C between 12 and 9 Ma. Cooling is linked to exhumation by an angular unconformity that separates the deformed basement complex below from mildly deformed, upper Eocene to Oligocene terrestrial to shallow-marine strata above. Exhumation and erosion of the basement complex are independently confirmed by lower Miocene strata that have a detrital zircon signature that closely follows the central Panama basement complex age distribution. These results greatly restrict the width and depth of the strait separating southern Central America from South America, and challenge the widely accepted notion that the Central American Seaway closed in late Pliocene time, when the ice age began. C1 [Montes, Camilo; Cardona, A.; McFadden, R.; Moron, S. E.; Silva, C. A.; Restrepo-Moreno, S.; Ramirez, D. A.; Hoyos, N.; Wilson, J.; Jaramillo, C. A.] Smithsonian Trop Res Inst, Balboa, Ancon, Panama. [Montes, Camilo] Univ de los Andes, Bogota, DC, Colombia. [Cardona, A.] Univ Nacl Colombia, Medellin, Colombia. [Restrepo-Moreno, S.] Univ Florida, Dept Geol Sci, Gainesville, FL 32611 USA. [Farris, D.] Florida State Univ, Dept Earth Ocean & Atmospher Sci, Tallahassee, FL 32306 USA. [Bayona, G. A.] Corp Geolog Ares, Bogota, Colombia. [Valencia, V.] Univ Arizona, Dept Geosci, Tucson, AZ 85721 USA. [Bryan, J.] NW Florida State Coll, Niceville, FL 32578 USA. [Flores, J. A.] Univ Salamanca, Dept Geol, Fac Ciencias, E-37008 Salamanca, Spain. RP Montes, C (reprint author), Smithsonian Trop Res Inst, Box 0843-03092, Balboa, Ancon, Panama. EM cmontes@uniandes.edu.co RI Flores, Jose-Abel/D-4218-2009; OI Flores, Jose-Abel/0000-0003-1909-293X; Ramirez, Diego/0000-0001-6018-3273; Montes, Camilo/0000-0002-3553-0787 FU ACP (Panama Canal Authority) [SAA-199520-KRP]; Senacyt [SUM-07-001, EST010-080 A]; Colciencias, U.S. National Science Foundation (NSF) [0966884]; Mark Tupper, NSF [EAR-0824299]; National Geographic; Smithsonian Institution; Ricardo Perez S.A. FX This project was supported by ACP (Panama Canal Authority) contract SAA-199520-KRP; Senacyt grants SUM-07-001 and EST010-080 A; Colciencias, U.S. National Science Foundation (NSF) grant 0966884 (OISE, EAR, DRL), Mark Tupper, NSF EAR-0824299, National Geographic, Smithsonian Institution, and Ricardo Perez S.A. Thanks go to H. Broce, F. Guardia, P. Francesci, V. Luque, A. Baresh, F. Moreno, and L. Oviedo for their help. G. Worner kindly provided early copies of his manuscripts and data. Access to field areas and collection permits were granted by ACP, Ministerio de Industria y Comercio, and Odebretch. We are grateful to P. Molnar, S. Johnston, J. Pindell, P. Mann, D. Foster, and P. O'Sullivan, as well as to all participants of the February 2010 IGCP (International Union of Geological Sciences) 546 "Subduction Zones of the Caribbean" and IGCP 574 "Bending and Bent Orogens, and Continental Ribbons" for their critical reviews. NR 95 TC 130 Z9 134 U1 7 U2 88 PU GEOLOGICAL SOC AMER, INC PI BOULDER PA PO BOX 9140, BOULDER, CO 80301-9140 USA SN 0016-7606 J9 GEOL SOC AM BULL JI Geol. Soc. Am. Bull. PD MAY-JUN PY 2012 VL 124 IS 5-6 BP 780 EP 799 DI 10.1130/B30528.1 PG 20 WC Geosciences, Multidisciplinary SC Geology GA 937XG UT WOS:000303696600010 ER PT J AU Jackson, FE Roberts, TP Alexander, DM Gelbord, JM Goulding, AD Ward, MJ Wardlow, JL Watson, MG AF Jackson, F. E. Roberts, T. P. Alexander, D. M. Gelbord, J. M. Goulding, A. D. Ward, M. J. Wardlow, J. L. Watson, M. G. TI On the nature of high X-ray luminosities in Sloan Digital Sky Survey galaxies SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE galaxies: active; galaxies: starburst ID ACTIVE GALACTIC NUCLEI; DEEP FIELD-SOUTH; ULTRALUMINOUS INFRARED GALAXIES; POINT-SOURCE CATALOGS; STAR-FORMATION RATE; XMM-NEWTON; STARBURST GALAXIES; OPTICAL SPECTROSCOPY; SEYFERT-GALAXIES; NEARBY GALAXIES AB Surveys have revealed a class of object displaying both high X-ray luminosities (L-X > 10(42) erg s(-1)) and a lack of a discernible active galactic nucleus (AGN) in the optical band. If these sources are powered by star formation activity alone, they would be the most extreme X-ray luminosity star-forming galaxies known. We have investigated the mechanism driving the X-ray luminosities of such galaxies by studying the X-ray emission of three moderate redshift (z similar to 0.1) examples of this class, selected from a cross-correlation of the Sloan Digital Sky Survey Data Release 5 (SDSS-DR5) and XMM-Newton serendipitous survey (2XMMp-DR0) catalogues. X-ray spatial and long-term variability diagnostics of these sources suggest that they are compact X-ray emitters. This result is supported by the detection of rapid short-term variability in an observation of one of the sources. The X-ray spectra of all three sources are best fitted with a simple absorbed power-law model, thus betraying no significant signs of star formation. These results indicate that the X-ray emission is powered by AGN activity. But why do these sources not display optical AGN signatures? We show that the most likely explanation is that the optical AGN emission lines are being diluted by star formation signatures from within their host galaxies. C1 [Jackson, F. E.; Roberts, T. P.; Alexander, D. M.; Gelbord, J. M.; Goulding, A. D.; Ward, M. J.; Wardlow, J. L.] Univ Durham, Dept Phys, Durham DH1 3LE, England. [Gelbord, J. M.] Penn State Univ, Dept Astron & Astrophys, Eberly Coll Sci, Davey Lab 525, University Pk, PA 16802 USA. [Goulding, A. D.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Wardlow, J. L.] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. [Watson, M. G.] Univ Leicester, Dept Phys & Astron, Xray & Observat Astron Grp, Leicester LE1 7RH, Leics, England. RP Jackson, FE (reprint author), Univ Durham, Dept Phys, South Rd, Durham DH1 3LE, England. EM fjackson@head.cfa.harvard.edu RI Wardlow, Julie/C-9903-2015; OI Wardlow, Julie/0000-0003-2376-8971; Alexander, David/0000-0002-5896-6313 FU Alfred P. Sloan Foundation; National Science Foundation; US Department of Energy; National Aeronautics and Space Administration; Japanese Monbukagakusho; Max Planck Society; Higher Education Funding Council for England FX This work is based on observations obtained with XMM-Newton, an ESA science mission with instruments and contributions directly funded by ESA Member States and the USA (NASA). This research has made use of software provided by the Chandra X-ray Center (CXC) in the application package CIAO. Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the US Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society and the Higher Education Funding Council for England. The SDSS website is http://www.sdss.org/. The SDSS is managed by the Astrophysical Research Consortium for the Participating Institutions. This research has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This research has also made use of the SIMBAD data base, operated at CDS, Strasbourg, France. NR 86 TC 3 Z9 3 U1 0 U2 3 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD MAY PY 2012 VL 422 IS 1 BP 2 EP 13 DI 10.1111/j.1365-2966.2011.20164.x PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 940SE UT WOS:000303912600022 ER PT J AU Danielson, ALR Lehmer, BD Alexander, DM Brandt, WN Luo, B Miller, N Xue, YQ Stott, JP AF Danielson, A. L. R. Lehmer, B. D. Alexander, D. M. Brandt, W. N. Luo, B. Miller, N. Xue, Y. Q. Stott, J. P. TI The cosmic history of hot gas cooling and radio active galactic nucleus activity in massive early-type galaxies SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE galaxies: elliptical and lenticular, cD; galaxies: evolution; X-rays: galaxies ID DEEP-FIELD-SOUTH; YALE-CHILE MUSYC; SUPERMASSIVE BLACK-HOLE; NEAR-INFRARED CATALOG; POINT-SOURCE CATALOGS; 1.4 GHZ OBSERVATIONS; X-RAY LUMINOSITY; ELLIPTIC GALAXIES; PHOTOMETRIC REDSHIFTS; JET POWER AB We study the X-ray properties of 393 optically selected early-type galaxies (ETGs) over the redshift range of z approximate to 0.0-1.2 in the Chandra Deep Fields (CDFs). To measure the average X-ray properties of the ETG population, we use X-ray stacking analyses with a subset of 158 passive ETGs (148 of which were individually undetected in X-ray). This ETG subset was constructed to span the redshift ranges of z = 0.1-1.2 in the approximate to 4 Ms CDF-South and approximate to 2 Ms CDF-North and z = 0.1-0.6 in the approximate to 250 ks Extended-CDF-South where the contribution from individually undetected active galactic nuclei (AGN) is expected to be negligible in our stacking. We find that 55 of the ETGs are detected individually in X-ray, and 12 of these galaxies have properties consistent with being passive hot-gas-dominated systems (i.e. systems not dominated by an X-ray bright AGN). On the basis of our analyses, we find little evolution in the mean 0.5-2 keV to B-band luminosity ratio (L-X/L-B proportional to [1 + z](1.2)) since z approximate to 1.2, implying that some heating mechanism prevents the gas from cooling in these systems. We consider that feedback from radio-mode AGN activity could be responsible for heating the gas. We select radio AGN in the ETG population using their far-infrared/radio flux ratio. Our radio observations allow us to constrain the duty cycle history of radio AGN activity in our ETG sample. We estimate that if scaling relations between radio and mechanical power hold out to z approximate to 1.2 for the ETG population being studied here, the average mechanical power from AGN activity is a factor of approximate to 1.4-2.6 times larger than the average radiative cooling power from hot gas over the redshift range z approximate to 0-1.2. The excess of inferred AGN mechanical power from these ETGs is consistent with that found in the local Universe for similar types of galaxies. C1 [Danielson, A. L. R.; Lehmer, B. D.; Alexander, D. M.; Stott, J. P.] Univ Durham, Dept Phys, Durham DH1 3LE, England. [Lehmer, B. D.] Johns Hopkins Univ, Baltimore, MD 21218 USA. [Lehmer, B. D.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Brandt, W. N.; Xue, Y. Q.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA. [Brandt, W. N.; Xue, Y. Q.] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA. [Luo, B.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Miller, N.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA. RP Danielson, ALR (reprint author), Univ Durham, Dept Phys, South Rd, Durham DH1 3LE, England. EM a.l.r.danielson@durham.ac.uk RI Brandt, William/N-2844-2015; OI Brandt, William/0000-0002-0167-2453; Stott, John/0000-0002-1679-9983; Alexander, David/0000-0002-5896-6313 FU STFC; Einstein Fellowship program; CXC [SP1-12007A] FX We thank the anonymous referee for their helpful comments. ALRD acknowledges an STFC studentship. We would like to thank Ian Smail for useful comments and feedback on this work. We also thank Philip Best for providing us with his sample for comparing to our work and Laura Birzan for useful advice. BDL acknowledges financial support from the Einstein Fellowship program. WNB and YQX thank CXC grant SP1-12007A. DMA acknowledges financial support from STFC. NR 87 TC 9 Z9 9 U1 0 U2 1 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD MAY PY 2012 VL 422 IS 1 BP 494 EP 509 DI 10.1111/j.1365-2966.2012.20626.x PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 940SE UT WOS:000303912600055 ER PT J AU Chakravorty, S Misra, R Elvis, M Kembhavi, AK Ferland, G AF Chakravorty, Susmita Misra, Ranjeev Elvis, Martin Kembhavi, Ajit K. Ferland, Gary TI The influence of soft spectral components on the structure and stability of warm absorbers in active galactic nuclei SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE galaxies: active; quasars: absorption lines; galaxies: Seyfert; X-rays: galaxies; X-rays: ISM ID X-RAY-SPECTRA; XMM-NEWTON OBSERVATIONS; QUASI-STELLAR OBJECTS; SUPERSOLAR METAL ABUNDANCES; HIGH-REDSHIFT QUASARS; RADIO-QUIET QUASARS; BROAD-LINE REGION; BIG BLUE BUMP; ACCRETION DISKS; ENERGY-DISTRIBUTIONS AB The radiation from the central regions of active galactic nuclei, including that from the accretion disc surrounding the black hole, is likely to peak in the extreme-ultraviolet similar to 13-100 eV. However, due to Galactic absorption, we are limited to constrain the physical properties, i.e. the black hole mass and the accretion rate, from what observations we have below similar to 10 eV or above similar to 100 eV. In this paper, we predict the thermal and ionization states of warm absorbers as a function of the shape of the unobservable continuum. In particular we model an accretion disc at kT(in) similar to 10 eV and a soft excess at kT(se) similar to 150 eV. The warm absorber, which is the highly ionized gas along the line of sight to the continuum, shows signatures in the similar to 0.3-2 keV energy range consisting of numerous absorption lines and edges of various ions, some of the prominent ones being H- and He-like oxygen, neon, magnesium and silicon. We find that the properties of the warm absorber are significantly influenced by the changes in the temperature of the accretion disc, as well as by the strength of the soft excess, as they affect the optical depth particularly for iron and oxygen. These trends may help develop a method of characterizing the shape of the unobservable continuum and the occurrence of warm absorbers. C1 [Chakravorty, Susmita; Misra, Ranjeev; Kembhavi, Ajit K.] IUCAA, Pune 411007, Maharashtra, India. [Chakravorty, Susmita] Harvard Univ, Dept Astron, Cambridge, MA 02138 USA. [Chakravorty, Susmita; Elvis, Martin] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Ferland, Gary] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA. RP Chakravorty, S (reprint author), IUCAA, Post Bag 4, Pune 411007, Maharashtra, India. EM schakravorty@head.cfa.harvard.edu; rmisra@iucaa.ernet.in; elvis@head.cfa.harvard.edu; akk@iucaa.ernet.in; gary@pa.uky.edu OI Ferland, Gary/0000-0003-4503-6333 NR 97 TC 11 Z9 11 U1 1 U2 1 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0035-8711 EI 1365-2966 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD MAY PY 2012 VL 422 IS 1 BP 637 EP 651 DI 10.1111/j.1365-2966.2012.20641.x PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 940SE UT WOS:000303912600067 ER PT J AU Schmidtobreick, L Rodriguez-Gil, P Long, KS Gansicke, BT Tappert, C Torres, MAP AF Schmidtobreick, L. Rodriguez-Gil, P. Long, K. S. Gaensicke, B. T. Tappert, C. Torres, M. A. P. TI Discovery of H alpha satellite emission in a low state of the SW Sextantis star BB Doradus SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE accretion, accretion discs; magnetic fields; stars: activity; stars: individual: BB Dor; novae, cataclysmic variables; stars: winds, outflows ID ROTATING MAGNETOSPHERE MODEL; DW URSAE MAJORIS; CATACLYSMIC VARIABLES; AM-HERCULIS; WHITE-DWARF; SECONDARY-STAR; TT-ARIETIS; SPECTROSCOPY; BINARIES; DISTRIBUTIONS AB BB Dor was observed during its low state in 2009. Signatures of both binary components are revealed in the average optical spectrum; no signature of accretion is observed. Narrow emission lines of H alpha, He I and Na D, as well as TiO absorption troughs, trace the motion of the irradiated secondary star. We detect two additional components in the H alpha emission line that share many characteristics of similar 'satellite' lines observed in the low state of magnetic cataclysmic variables of AM Her type. It is the first time such emission components are detected for an SW Sex star. C1 [Schmidtobreick, L.] European So Observ, Santiago 19, Chile. [Rodriguez-Gil, P.] Inst Astrofis Canarias, E-38205 San Cristobal la Laguna, Santa Cruz De T, Spain. [Rodriguez-Gil, P.] Univ La Laguna, Dept Astrofis, E-38203 San Cristobal la Laguna, Santa Cruz De T, Spain. [Rodriguez-Gil, P.] Isaac Newton Grp Telescopes, E-38700 Santa Cruz De La Palma, Spain. [Long, K. S.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Gaensicke, B. T.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. [Tappert, C.] Univ Valparaiso, Dept Fis & Astron, Valparaiso, Chile. [Torres, M. A. P.] SRON, Netherlands Inst Space Res, NL-3584 CA Utrecht, Netherlands. [Torres, M. A. P.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Schmidtobreick, L (reprint author), European So Observ, Casilla 19001, Santiago 19, Chile. EM lschmidt@eso.org RI Gaensicke, Boris/A-9421-2012; Rodriguez-Gil, Pablo/H-7709-2015 OI Gaensicke, Boris/0000-0002-2761-3005; Rodriguez-Gil, Pablo/0000-0002-4717-5102 FU European Southern Observatory, Paranal [082.D-0154]; Spanish MICINN [CSD2006-00070]; First Science; GTC; ASTROMOL [CSD2009-00038] FX Based on observations collected at the European Southern Observatory, Paranal (programme 082.D-0154).; Partially funded by the Spanish MICINN under the Consolider-Ingenio 2010 Programme grants CSD2006-00070, First Science with the GTC, and CSD2009-00038, ASTROMOL. PR-G thanks ESO for a stay within the Visitor Scientist programme. The use of MOLLY developed by Tom Marsh is gratefully acknowledged. We thank the team on Paranal for taking the spectra in ToO mode, i.e. Emanuela Pompei and Thomas Rivinius. NR 38 TC 4 Z9 4 U1 0 U2 3 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD MAY PY 2012 VL 422 IS 1 BP 731 EP 737 DI 10.1111/j.1365-2966.2012.20653.x PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 940SE UT WOS:000303912600075 ER PT J AU Gibson, NP Aigrain, S Pont, F Sing, DK Desert, JM Evans, TM Henry, G Husnoo, N Knutson, H AF Gibson, N. P. Aigrain, S. Pont, F. Sing, D. K. Desert, J. -M. Evans, T. M. Henry, G. Husnoo, N. Knutson, H. TI Probing the haze in the atmosphere of HD 189733b with Hubble Space Telescope/WFC3 transmission spectroscopy SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE methods: data analysis; techniques: spectroscopic; stars: individual: HD 189733; planetary systems ID HUBBLE-SPACE-TELESCOPE; TIME-SERIES PHOTOMETRY; EXTRASOLAR PLANET; RAYLEIGH-SCATTERING; MU-M; SPECTRUM; TRANSIT; HD-189733; SPITZER AB We present Hubble Space Telescope near-infrared transmission spectroscopy of the transiting exoplanet HD 189733b, using the Wide Field Camera 3 (WFC3). This consists of time series spectra of two transits, used to measure the wavelength dependence of the planetary radius. These observations aim to test whether the Rayleigh scattering haze detected at optical wavelengths extends into the near-infrared, or if it becomes transparent leaving molecular features to dominate the transmission spectrum. Due to saturation and non-linearity affecting the brightest (central) pixels of the spectrum, light curves were extracted from the blue and red ends of the spectra only, corresponding to wavelength ranges of 1.099-1.168 and 1.521-1.693 mu m, respectively, for the first visit, and 1.082-1.128 and 1.514-1.671 mu m for the second. The light curves were fitted using a Gaussian process model to account for instrumental systematics whilst simultaneously fitting for the transit parameters. This gives values of the planet-to-star radius ratio for the blue and red light curves of 0.156 50 +/- 0.000 48 and 0.156 34 +/- 0.000 32, respectively, for visit 1 and 0.157 16 +/- 0.000 78 and 0.156 30 +/- 0.000 37 for visit 2 (using a quadratic limb-darkening law). The planet-to-star radius ratios measured in both visits are consistent, and we see no evidence for the drop in absorption expected if the haze that is observed in the optical becomes transparent in the infrared. This tentatively suggests that the haze dominates the transmission spectrum of HD 189733b into near-infrared wavelengths, although more robust observations are required to provide conclusive evidence. C1 [Gibson, N. P.; Aigrain, S.; Evans, T. M.] Univ Oxford, Dept Phys, Oxford OX1 3RH, England. [Pont, F.; Sing, D. K.; Husnoo, N.] Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England. [Desert, J. -M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Henry, G.] Tennessee State Univ, Nashville, TN 37209 USA. [Knutson, H.] CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA. RP Gibson, NP (reprint author), Univ Oxford, Dept Phys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England. EM neale.gibson@astro.ox.ac.uk OI Gibson, Neale/0000-0002-9308-2353; Sing, David /0000-0001-6050-7645 FU NASA [NAS5-26555]; NASA Office of Space Science [NNX09AF08G]; STFC [ST/G002266/2]; WFC3 instrument team FX All of the data presented in this paper were obtained from the Multi-mission Archive at the Space Telescope Science Institute (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. Support for MAST for non-HST data is provided by the NASA Office of Space Science via grant NNX09AF08G and by other grants and contracts. NPG and SA acknowledge support from STFC grant ST/G002266/2. We are extremely grateful for the support provided the WFC3 instrument team, in particular H. Bushouse, and discussions with P. McCullough. Finally, we thank the referee, R. Gilliland, for his careful reading of the manuscript and helpful suggestions. NR 33 TC 54 Z9 55 U1 0 U2 2 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD MAY PY 2012 VL 422 IS 1 BP 753 EP 760 DI 10.1111/j.1365-2966.2012.20655.x PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 940SE UT WOS:000303912600077 ER PT J AU Wilcock, LA Ward-Thompson, D Kirk, JM Stamatellos, D Whitworth, A Elia, D Fuller, GA DiGiorgio, A Griffin, MJ Molinari, S Martin, P Mottram, JC Peretto, N Pestalozzi, M Schisano, E Plume, R Smith, HA Thompson, MA AF Wilcock, L. A. Ward-Thompson, D. Kirk, J. M. Stamatellos, D. Whitworth, A. Elia, D. Fuller, G. A. DiGiorgio, A. Griffin, M. J. Molinari, S. Martin, P. Mottram, J. C. Peretto, N. Pestalozzi, M. Schisano, E. Plume, R. Smith, H. A. Thompson, M. A. TI Cores in infrared dark clouds (IRDCs) seen in the Hi-GAL survey between l=300 degrees and 330 degrees SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE stars: formation ID MASSIVE STAR-FORMATION; GALACTIC PLANE; INSTRUMENT; CANDIDATES; PROTOSTARS; EMISSION; CLUSTERS; CATALOG; RADIO AB We have used data taken as part of the Herschel infrared Galactic Plane survey (Hi-GAL) to study 3171 infrared dark cloud (IRDC) candidates that were identified in the mid-IR (8 mu m) by Spitzer (we refer to these as 'Spitzer-dark' regions). They all lie in the range l = 300-330 degrees and vertical bar b vertical bar <= 1 degrees. Of these, only 1205 were seen in emission in the far-IR (250-500 mu m) by Herschel (we call these 'Herschel-bright' clouds). It is predicted that a dense cloud will not only be seen in absorption in the mid-IR, but will also be seen in emission in the far-IR at the longest Herschel wavebands (250-500 mu m). If a region is dark at all wavelengths throughout the mid-IR and far-IR, then it is most likely to be simply a region of lower background IR emission (a 'hole in the sky'). Hence, it appears that previous surveys, based on Spitzer and other mid-IR data alone, may have overestimated the total IRDC population by a factor of similar to 2. This has implications for estimates of the star formation rate in IRDCs in the Galaxy. We studied the 1205 Herschel-bright IRDCs at 250 mu m and found that 972 of them had at least one clearly defined 250-mu m peak, indicating that they contained one or more dense cores. Of these, 653 (67 per cent) contained an 8-mu m point source somewhere within the cloud, 149 (15 per cent) contained a 24-mu m point source but no 8-mu m source and 170 (18 per cent) contained no 24- or 8-mu m point sources. We use these statistics to make inferences about the lifetimes of the various evolutionary stages of IRDCs. C1 [Wilcock, L. A.; Ward-Thompson, D.; Kirk, J. M.; Stamatellos, D.; Whitworth, A.; Griffin, M. J.] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales. [DiGiorgio, A.; Molinari, S.; Pestalozzi, M.; Schisano, E.] CNR, Inst Fis Spazio Interplanetario, I-00133 Rome, Italy. [Elia, D.; Fuller, G. A.] Univ Manchester, Sch Phys & Astron, Jodrell Bank, Ctr Astrophys, Manchester M13 9PL, Lancs, England. [Martin, P.] Univ Toronto, Canadian Inst Theoret Astrophys, Toronto, ON M5S 3H8, Canada. [Mottram, J. C.] Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England. [Peretto, N.] CEA DSM CNRS Univ Paris Diderot, Lab AIM, IFRU Serv Astrophys, CE Saclay, F-91191 Gif Sur Yvette, France. [Plume, R.] Univ Calgary, Dept Phys Astron, Calgary, AB T2N 1N4, Canada. [Smith, H. A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Thompson, M. A.] Univ Hertfordshire, Ctr Astrophys Res, Sci & Technol Res Inst, Hatfield AL10 9AB, Herts, England. RP Wilcock, LA (reprint author), Cardiff Univ, Sch Phys & Astron, Queens Bldg, Cardiff CF24 3AA, S Glam, Wales. EM lucy.wilcock@astro.cf.ac.uk RI Molinari, Sergio/O-4095-2016 OI Molinari, Sergio/0000-0002-9826-7525 FU STFC; CSA (Canada); NAOC (China); CEA (France); CNES (France); CNRS (France); ASI (Italy); MCINN (Spain); SNSB (Sweden); STFC (UK); NASA (USA); BMVIT (Austria); ESA-PRODEX (Belgium); CEA/CNES (France); DLR (Germany); ASI/INAF (Italy); CICYT/MCYT (Spain) FX LAW acknowledges STFC studentship funding. SPIRE was developed by a consortium of institutes led by Cardiff University (UK) and including Univ. Lethbridge (Canada); NAOC (China); CEA, LAM(France); IFSI, Univ. Padua (Italy); IAC (Spain); Stockholm-Observatory (Sweden); Imperial College London, RAL, UCL-MSSL, UKATC, Univ. Sussex (UK) and Caltech, JPL, NHSC, Univ. Colorado (USA). This development was supported by national funding agencies: CSA (Canada); NAOC (China); CEA, CNES, CNRS (France); ASI (Italy); MCINN (Spain); SNSB (Sweden); STFC (UK) and NASA (USA). PACS was developed by a consortium of institutes led by MPE (Germany) and including UVIE (Austria); KU Leuven, CSL, IMEC (Belgium); CEA, LAM (France); MPIA (Germany); INAF-IFSI/OAA/OAP/OAT, LENS, SISSA (Italy); IAC (Spain). This development was supported by the funding agencies BMVIT (Austria), ESA-PRODEX (Belgium), CEA/CNES (France), DLR (Germany), ASI/INAF (Italy) and CICYT/MCYT (Spain). HIPE is a joint development by the Herschel Science Ground Segment Consortium, consisting of ESA, the NASA Herschel Science Center, and the HIFI, PACS and SPIRE consortia. This work is also based, in part, on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. NR 46 TC 19 Z9 19 U1 0 U2 1 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD MAY PY 2012 VL 422 IS 2 BP 1071 EP 1082 DI 10.1111/j.1365-2966.2012.20680.x PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 940SG UT WOS:000303912800013 ER PT J AU Guidorzi, C Margutti, R Amati, L Campana, S Orlandini, M Romano, P Stamatikos, M Tagliaferri, G AF Guidorzi, C. Margutti, R. Amati, L. Campana, S. Orlandini, M. Romano, P. Stamatikos, M. Tagliaferri, G. TI Average power density spectrum of Swift long gamma-ray bursts in the observer and in the source-rest frames SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE radiation mechanisms: non-thermal; gamma-ray burst: general ID INTERNAL SHOCK MODEL; LIGHT CURVES; COSMOLOGICAL PARAMETERS; CENTRAL ENGINE; VARIABILITY; ACCRETION; DURATION; ORIGIN; GRB; EMISSION AB We calculate the average power density spectra (PDSs) of 244 long gamma-ray bursts detected with the Swift Burst Alert Telescope (BAT) in the 15-150 keV band from 2005 January to 2011 August. For the first time we derived the average PDS in the source-rest frame of 97 gamma-ray bursts (GRBs) with known redshift. For 49 of them an average PDS was also obtained in a common source-frame energy band to account for the dependence of time profiles on energy. Previous results obtained on Burst and Transient Source Experiment (BATSE) GRBs with unknown redshift showed that the average spectrum in the 25-2000 keV band could be modelled with a power law with a 5/3 index over nearly two decades of frequency with a break at similar to 1 Hz. Depending on the normalization and on the subset of GRBs considered, our results show analogous to steeper slopes (between 1.7 and 2.0) of the power law. However, no clear evidence for the break at similar to 1 Hz was found, although the softer energy band of BAT compared with BATSE might account for that. We instead find a break at lower frequency corresponding to a typical source-rest-frame characteristic time of a few seconds. We furthermore find no significant differences between observer-and source-rest frames. Notably, no distinctive PDS features are found for GRBs with different intrinsic properties of the prompt emission either. Finally, the average PDS of GRBs at higher redshifts shows possibly shallower power-law indices than that of low-z GRBs. It is not clear whether this is due to an evolution with z of the average PDS. C1 [Guidorzi, C.] Univ Ferrara, Dept Phys, I-44122 Ferrara, Italy. [Margutti, R.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Amati, L.; Orlandini, M.] INAF, Ist Astrofis Spaziale & Fis Cosm, I-40129 Bologna, Italy. [Campana, S.; Tagliaferri, G.] INAF, Osservatorio Astron Brera, I-23807 Merate, LC, Italy. [Romano, P.] INAF, Ist Astrofis Spaziale & Fis Cosm, I-90146 Palermo, Italy. [Stamatikos, M.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Stamatikos, M.] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA. RP Guidorzi, C (reprint author), Univ Ferrara, Dept Phys, Via Saragat 1, I-44122 Ferrara, Italy. EM guidorzi@fe.infn.it RI Amati, Lorenzo/N-5586-2015; Orlandini, Mauro/H-3114-2014; OI Amati, Lorenzo/0000-0001-5355-7388; Orlandini, Mauro/0000-0003-0946-3151; Campana, Sergio/0000-0001-6278-1576; Tagliaferri, Gianpiero/0000-0003-0121-0723 FU ASI [I/088/06/0] FX CG acknowledges ASI for financial support (ASI-INAF contract I/088/06/0). NR 50 TC 15 Z9 15 U1 0 U2 3 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD MAY PY 2012 VL 422 IS 2 BP 1785 EP 1803 DI 10.1111/j.1365-2966.2012.20758.x PG 19 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 940SG UT WOS:000303912800075 ER PT J AU Stone, N Loeb, A AF Stone, Nicholas Loeb, Abraham TI Tidal disruption flares of stars from moderately recoiled black holes SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE black hole physics; gravitational waves; galaxies: nuclei ID EARLY-TYPE GALAXIES; HUBBLE-SPACE-TELESCOPE; GRAVITATIONAL-WAVE RECOIL; ACTIVE GALACTIC NUCLEI; SDSS J092712.65+294344.0; DYNAMICAL FRICTION; ACCRETION DISCS; SPIN EVOLUTION; CENTERS; BINARIES AB We analyse stellar tidal disruption events as a possible observational signature of gravitational wave induced recoil of supermassive black holes. As a black hole wanders through its galaxy, it will tidally disrupt bound and unbound stars at rates potentially observable by upcoming optical transient surveys. To quantify these rates, we explore a broad range of host galaxy and black hole kick parameters. We find that emission from a transient accretion disc can produce similar to 1 event per year which the Large Synoptic Survey Telescope would identify as spatially offset, while super-Eddington outflows, if they exist, are likely to produce similar to 10 spatially offset events per year. A majority of tidal disruption flares, and a large majority of flares with an observable spatial offset, are due to bound rather than unbound stars. The total number of disruption events due to recoiled black holes could be almost 1 per cent of the total stellar tidal disruption rate. C1 [Stone, Nicholas; Loeb, Abraham] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Stone, N (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM nstone@cfa.harvard.edu; aloeb@cfa.harvard.edu FU NSF [AST-0907890]; NASA [NNX08AL43G, NNA09DB30A] FX We thank Laura Blecha, Alister Graham, Bence Kocsis and Ryan O'Leary for helpful suggestions. This work was supported in part by NSF grant AST-0907890 and NASA grants NNX08AL43G and NNA09DB30A. NR 91 TC 15 Z9 15 U1 0 U2 0 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0035-8711 EI 1365-2966 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD MAY PY 2012 VL 422 IS 3 BP 1933 EP 1947 DI 10.1111/j.1365-2966.2012.20577.x PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 939YZ UT WOS:000303858400008 ER PT J AU Natarajan, P Volonteri, M AF Natarajan, Priyamvada Volonteri, Marta TI The mass function of black holes 1 < z < 4.5: comparison of models with observations SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE galaxies: nuclei; quasars: general; cosmology: observations; cosmology: theory ID DARK-MATTER HALOES; HIGH-REDSHIFT; VELOCITY DISPERSION; LUMINOSITY FUNCTION; ANGULAR-MOMENTUM; 1ST STARS; GROWTH; EVOLUTION; QUASARS; ACCRETION AB In this paper, we compare the observationally derived black hole mass function (BHMF) of luminous (>10451046 erg s-1) broad-line quasars (BLQSOs) at 1 < z < 4.5 drawn from the Sloan Digital Sky Survey (SDSS) presented by Kelly et al., with models of merger-driven black hole (BH) growth in the context of standard hierarchical structure formation models. In these models, we explore two distinct black hole seeding prescriptions at the highest redshifts: light seeds remnants of Population III stars and massive seeds that form from the direct collapse of pre-galactic discs. The subsequent merger triggered mass build-up of the black hole population is tracked over cosmic time under the assumption of a fixed accretion rate as well as rates drawn from the distribution derived by Merloni & Heinz. Four model snapshots at z= 1.25, 2, 3.25 and 4.25 are compared with the SDSS-derived BHMFs of BLQSOs. We find that the light seed models fall short of reproducing the observationally derived mass function of BLQSOs at MBH > 109 M? throughout the redshift range; the massive seed models with a fixed accretion rate of 0.3 Edd, or with accretion rates drawn from the Merloni & Heinz distribution provide the best fit to the current observational data at z > 2, although they overestimate the high-mass end of the mass function at lower redshifts. At low redshifts, a drastic drop in the accretion rate is observed and this is explained as arising due to the diminished gas supply available due to consumption by star formation or changes in the geometry of the inner feeding regions. Therefore, the overestimate at the high-mass end of the black hole mass function for the massive seed models can be easily modified, as the accretion rate is likely significantly lower at these epochs than what we assume. For the Merloni & Heinz model, examining the Eddington ratio distributions fEdd, we find that they are almost uniformly sampled from fEdd= 10-2 to 1 at z? 1, while at high redshift, current observations suggest accretion rates close to Eddington, if not mildly super-Eddington, at least for these extremely luminous quasars. Our key findings are that the duty cycle of super-massive black holes powering BLQSOs increases with increasing redshift for all models and models with Population III remnants as black hole seeds are unable to fit the observationally derived BHMFs for BLQSOs, lending strong support for the massive seeding model. C1 [Natarajan, Priyamvada] Yale Univ, Dept Astron, New Haven, CT 06511 USA. [Natarajan, Priyamvada] Harvard Smithsonian Ctr Astrophys, Inst Theory & Computat, Cambridge, MA 02138 USA. [Volonteri, Marta] Univ Michigan, Dept Phys & Astron, Ann Arbor, MI 48109 USA. RP Natarajan, P (reprint author), Yale Univ, Dept Astron, New Haven, CT 06511 USA. EM priyamvada.natarajan@yale.edu FU John Simon Guggenheim Foundation FX PN acknowledges support from the John Simon Guggenheim Foundation and a residency at the Rockefeller Bellagio Center where a portion of this work was completed. She also thanks the Institute for Theory and Computation at Harvard for hosting her during her Guggenheim Fellowship year. NR 50 TC 14 Z9 14 U1 0 U2 0 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD MAY PY 2012 VL 422 IS 3 BP 2051 EP 2057 DI 10.1111/j.1365-2966.2012.20708.x PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 939YZ UT WOS:000303858400016 ER PT J AU Rodriguez-Gil, P Schmidtobreick, L Long, KS Gansicke, BT Torres, MAP Rubio-Diez, MM Santander-Garcia, M AF Rodriguez-Gil, P. Schmidtobreick, L. Long, K. S. Gaensicke, B. T. Torres, M. A. P. Rubio-Diez, M. M. Santander-Garcia, M. TI The fight for accretion: discovery of intermittent mass transfer in BB Doradus in the low state SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE accretion; accretion discs; binaries: close; stars: individual: BB Dor; novae; cataclysmic variables ID MAGNETIC CATACLYSMIC VARIABLES; VY SCULPTORIS STARS; SW SEXTANTIS STARS; X-RAY OBSERVATIONS; AM-HERCULIS; EFFECTIVE TEMPERATURES; WHITE-DWARFS; PERIOD GAP; XMM-NEWTON; OLD NOVAE AB Our long-term photometric monitoring of southern nova-like cataclysmic variables with the 1.3-m Small and Moderate Aperture Research Telescope System (SMARTS) telescope found BB Doradus fading from V similar to 14.3 towards a deep low state at V similar to 19.3 in 2008 April. Here we present time-resolved optical spectroscopy of BB Dor in this faint state in 2009. The optical spectrum in quiescence is a composite of a hot white dwarf with Teff= 30 000 +/- 5000 K and a M3M4 secondary star with narrow emission lines (mainly of the Balmer series and He i) superposed. We associate these narrow profiles with an origin on the donor star. An analysis of the radial velocity curve of the Ha emission from the donor star allowed the measurement of an orbital period of 0.154 095 +/- 0.000 003 d (3.698 28 +/- 0.000 07 h), different from all previous estimates. We detected episodic accretion events which veiled the spectra of both stars and radically changed the line profiles within a time-scale of tens of minutes. This shows that accretion is not completely quenched in the low state. During these accretion episodes the line wings are stronger and their radial velocity curve is delayed by similar to 0.2 cycle, similar to that observed in SW Sex and AM Her stars in the high state, with respect to the motion of the white dwarf. Two scenarios are proposed to explain the extra emission: impact of the material on the outer edge of a cold, remnant accretion disc, or the combined action of a moderately magnetic white dwarf (B1? 5 MG) and the magnetic activity of the donor star. C1 [Rodriguez-Gil, P.] Univ La Laguna, Dept Astrofis, E-38204 Tenerife, Spain. [Rodriguez-Gil, P.] Inst Astrofis Canarias, E-38205 Tenerife, Spain. [Rodriguez-Gil, P.] Isaac Newton Grp Telescopes, E-38700 Santa Cruz de La Palma, Spain. [Schmidtobreick, L.] European So Observ, Santiago 19001, Chile. [Long, K. S.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Gaensicke, B. T.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. [Torres, M. A. P.] SRON, Netherlands Inst Space Res, NL-3584 CA Utrecht, Netherlands. [Torres, M. A. P.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Rubio-Diez, M. M.] Ctr Astrobiol CSIC INTA, E-28850 Madrid, Spain. [Santander-Garcia, M.] Observ Astron Nacl, E-28803 Madrid, Spain. RP Rodriguez-Gil, P (reprint author), Univ La Laguna, Dept Astrofis, E-38204 Tenerife, Spain. EM prguez@iac.es RI Gaensicke, Boris/A-9421-2012; Rodriguez-Gil, Pablo/H-7709-2015 OI Gaensicke, Boris/0000-0002-2761-3005; Rodriguez-Gil, Pablo/0000-0002-4717-5102 FU National Science Foundation; Spanish MICINN [CSD2006-00070, CSD2009-00038] FX Visiting astronomer, Cerro Tololo Inter-American Observatory and National Optical Astronomy Observatory, which are operated by the Association of Universities for Research in Astronomy, under contract with the National Science Foundation.; We thank the anonymous referee for comments that improved this manuscript. The use of Tom Marsh's MOLLY package is gratefully acknowledged. PRG thanks the ESO/Santiago Visiting Scientist Program for the approval of a scientific visit during which part of this work was completed. Partially funded by the Spanish MICINN under the Consolider-Ingenio 2010 Program grants CSD2006-00070: First Science with the GTC and CSD2009-00038: ASTROMOL. We are indebted to the SMARTS service observers Juan Espinoza, David Gonzalez, Manuel Hernandez, Rodrigo Hernandez, Alberto Miranda, Alberto Pasten, Mauricio Rojas, Jacqueline Seron, Joselino Vasquez and Jose Velasquez. NR 47 TC 6 Z9 6 U1 0 U2 1 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD MAY PY 2012 VL 422 IS 3 BP 2332 EP 2340 DI 10.1111/j.1365-2966.2012.20783.x PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 939YZ UT WOS:000303858400038 ER PT J AU Huitson, CM Sing, DK Vidal-Madjar, A Ballester, GE Etangs, ALD Desert, JM Pont, F AF Huitson, C. M. Sing, D. K. Vidal-Madjar, A. Ballester, G. E. Etangs, A. Lecavelier des Desert, J. -M. Pont, F. TI Temperature-pressure profile of the hot Jupiter HD 189733b from HST sodium observations: detection of upper atmospheric heating SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE techniques: spectroscopic; planets and satellites: individual: HD 189733b; stars: individual: HD 189733 ID HUBBLE-SPACE-TELESCOPE; GIANT PLANET ATMOSPHERES; TIME-SERIES PHOTOMETRY; EXTRASOLAR PLANET; TRANSMISSION SPECTRA; INFRARED-EMISSION; 209458B; ABSORPTION; CARBON; SPECTROSCOPY AB We present transmission spectra of the hot Jupiter HD 189733b taken with the Space Telescope Imaging Spectrograph (STIS) aboard Hubble Space Telescope (HST). The spectra cover the wavelength range 58086380 angstrom with a resolving power of R= 5000. We detect absorption from the Na i doublet within the exoplanets atmosphere at the 9s confidence level within a 5 angstrom band (absorption depth 0.09 +/- 0.01 per cent) and use the data to measure the doublets spectral absorption profile. We detect only the narrow cores of the doublet. The narrowness of the feature could be due to an obscuring high-altitude haze of an unknown composition or a significantly sub-solar Na i abundance hiding the line wings beneath an H2 Rayleigh signature. These observations are consistent with previous broad-band spectroscopy from Advanced Camera for Surveys (ACS) and STIS, where a featureless spectrum was seen. We also investigate the effects of starspots on the Na i line profile, finding that their impact is minimal and within errors in the sodium feature. We compare the spectral absorption profile over 5.5 scale heights with model spectral absorption profiles and constrain the temperature at different atmospheric regions, allowing us to construct a vertical temperature profile. We identify two temperature regimes: a 1280 +/- 240 K region derived from the Na i doublet line wings corresponding to altitudes below similar to 500 km, and a 2800 +/- 400 K region derived from the Na i doublet line cores corresponding to altitudes from similar to 500 to 4000 km. The zero altitude is defined by the white-light radius of RP/R?= 0.15628 +/- 0.00009. The temperature rises with altitude, which is likely evidence of a thermosphere. The absolute pressure scale depends on the species responsible for the Rayleigh signature and its abundance. We discuss a plausible scenario for this species, a high-altitude silicate haze and the atmospheric temperaturepressure profile that results. In this case, the high-altitude temperature rise for HD 189733b occurs at pressures of 10-5 to 10-8 bar. C1 [Huitson, C. M.; Sing, D. K.; Pont, F.] Univ Exeter, Sch Phys, Astrophys Grp, Exeter EX4 4QL, Devon, England. [Vidal-Madjar, A.; Etangs, A. Lecavelier des] Inst Astrophys Paris, CNRS, UMR 7095, F-75014 Paris, France. [Ballester, G. E.] Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA. [Desert, J. -M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Huitson, CM (reprint author), Univ Exeter, Sch Phys, Astrophys Grp, Stocker Rd, Exeter EX4 4QL, Devon, England. EM chuitson@astro.ex.ac.uk OI HUITSON, CATHERINE/0000-0002-4734-691X; Sing, David /0000-0001-6050-7645 FU STFC; NASA [HST-GO-11576-01-A] FX We thank David Charbonneau and Ron Gilliland for their last minute idea of the real time HST pointing correction which saved the data quality of visit 3. We also thank Jonathan Fortney for providing his model atmospheres and Adam Showman for providing his model T-P profiles. We thank our reviewer, Ignas Snellen, for pointing out problems with using the integrated AD profile to determine atmospheric temperature. This led us to the idea of using the spectral AD profile, which has greatly improved the paper. This work is based on observations with the NASA/ESA HST. This research has made use of NASA's Astrophysics Data System, and components of the IDL astronomy library. CMH acknowledges support from STFC. GEB acknowledges support by NASA through grant HST-GO-11576-01-A to University of Arizona from STScI. NR 45 TC 63 Z9 66 U1 0 U2 1 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0035-8711 EI 1365-2966 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD MAY PY 2012 VL 422 IS 3 BP 2477 EP 2488 DI 10.1111/j.1365-2966.2012.20805.x PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 939YZ UT WOS:000303858400051 ER PT J AU Pan, T Kasen, D Loeb, A AF Pan, Tony Kasen, Daniel Loeb, Abraham TI Pair-instability supernovae at the epoch of reionization SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE stars: Population II; stars: Population III; supernovae: general; dark ages; reionization; first stars ID METAL-POOR STARS; DELAY-TIME DISTRIBUTION; INITIAL MASS FUNCTION; EARLY RELEASE SCIENCE; POPULATION III STARS; SIMILAR-TO 7; IA SUPERNOVAE; LIGHT CURVES; 1ST STARS; LOW-METALLICITY AB Pristine stars with masses between similar to 140 and 260 M? are theoretically predicted to die as pair-instability supernovae. These very massive progenitors could come from Population III (Pop III) stars in the early universe. We model the light curves and spectra of pair-instability supernovae over a range of masses and envelope structures. At redshifts of reionization z= 6, we calculate the rates and detectability of pair-instability and core-collapse supernovae, and show that with the James Webb Space Telescope it is possible to determine the contribution of Pop III and Pop II stars towards reionization by constraining the stellar initial mass function at that epoch using these supernovae. We also find the rates of Type Ia supernovae, and show that they are not rare during reionization, and can be used to probe the mass function at 48 M?. If the budget of ionizing photons was dominated by contributions from top-heavy Pop III stars, we predict that the bright end of the galaxy luminosity function will be contaminated by pair-instability supernovae. C1 [Pan, Tony; Loeb, Abraham] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Kasen, Daniel] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Kasen, Daniel] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Kasen, Daniel] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. RP Pan, T (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM span@physics.harvard.edu FU Hertz Foundation; NSF [AST-0907890]; NASA [NNX08AL43G, NNA09DB30A]; Office of Energy Research, Office of High Energy and Nuclear Physics, Divisions of Nuclear Physics, of the US Department of Energy [DE-AC02-05CH11231]; DOE SciDAC [DE-FC02-06ER41438]; ORNL through INCITE FX We thank Bob Kirshner, Kaisey Mandel and Jonathan Pritchard for helpful discussions. TP was supported by the Hertz Foundation. This work was supported in part by NSF grant AST-0907890 and NASA grants NNX08AL43G and NNA09DB30A. This work is supported by the Director, Office of Energy Research, Office of High Energy and Nuclear Physics, Divisions of Nuclear Physics, of the US Department of Energy under Contract No. DE-AC02-05CH11231. This research has been supported by the DOE SciDAC Programme (DE-FC02-06ER41438). We are grateful for computer time provided by ORNL through an INCITE award and by NERSC. NR 81 TC 42 Z9 42 U1 0 U2 3 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD MAY PY 2012 VL 422 IS 3 BP 2701 EP 2711 DI 10.1111/j.1365-2966.2012.20837.x PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 939YZ UT WOS:000303858400072 ER PT J AU Maletinsky, P Hong, S Grinolds, MS Hausmann, B Lukin, MD Walsworth, RL Loncar, M Yacoby, A AF Maletinsky, P. Hong, S. Grinolds, M. S. Hausmann, B. Lukin, M. D. Walsworth, R. L. Loncar, M. Yacoby, A. TI A robust scanning diamond sensor for nanoscale imaging with single nitrogen-vacancy centres SO NATURE NANOTECHNOLOGY LA English DT Article ID FIELD OPTICAL MICROSCOPY; MAGNETIC-RESONANCE; COUPLED ELECTRON; LIGHT-SOURCE; SPIN; RESOLUTION; PHOTON; FABRICATION AB The nitrogen-vacancy defect centre in diamond(1-4) has potential applications in nanoscale electric and magnetic-field sensing(2-6), single-photon microscopy(7,8), quantum information processing(9) and bioimaging(10). These applications rely on the ability to position a single nitrogen-vacancy centre within a few nanometres of a sample, and then scan it across the sample surface, while preserving the centre's spin coherence and readout fidelity. However, existing scanning techniques, which use a single diamond nanocrystal grafted onto the tip of a scanning probe microscope(2,8,11,12), suffer from short spin coherence times due to poor crystal quality, and from inefficient far-field collection of the fluorescence from the nitrogen-vacancy centre. Here, we demonstrate a robust method for scanning a single nitrogen-vacancy centre within tens of nanometres from a sample surface that addresses both of these concerns. This is achieved by positioning a single nitrogen-vacancy centre at the end of a high-purity diamond nanopillar, which we use as the tip of an atomic force microscope. Our approach ensures long nitrogen-vacancy spin coherence times (similar to 75 mu s), enhanced nitrogen-vacancy collection efficiencies due to waveguiding, and mechanical robustness of the device (several weeks of scanning time). We are able to image magnetic domains with widths of 25 nm, and demonstrate a magnetic field sensitivity of 56 nT Hz(-1/2) at a frequency of 33 kHz, which is unprecedented for scanning nitrogen-vacancy centres. C1 [Maletinsky, P.; Grinolds, M. S.; Lukin, M. D.; Walsworth, R. L.; Yacoby, A.] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA. [Hong, S.; Hausmann, B.; Loncar, M.] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA. [Walsworth, R. L.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Yacoby, A (reprint author), Harvard Univ, Dept Phys, Cambridge, MA 02138 USA. EM yacoby@physics.harvard.edu RI Hong, Sungkun/D-3282-2014; Maletinsky, Patrick/L-1851-2015 OI Hong, Sungkun/0000-0003-0985-6641; Maletinsky, Patrick/0000-0003-1699-388X FU Swiss National Science Foundation; Kwanjeong Scholarship Foundation; Department of Defense (NDSEG); National Science Foundation (NSF) [ECS 0335765]; NIST; DARPA FX The authors thank B.D. Terris and N. Supper from Hitachi GST for providing the magnetic recording samples. P.M. acknowledges support from the Swiss National Science Foundation and S.H. thanks the Kwanjeong Scholarship Foundation for funding. M.S.G. is supported by fellowships from the Department of Defense (NDSEG programme) and the National Science Foundation (NSF). This work was supported by NIST and DARPA QuEST and QuASAR programmes and in part was performed at the Center for Nanoscale Systems (CNS), a member of the National Nanotechnology Infrastructure Network (NNIN), which is supported by the NSF (under award no. ECS 0335765). CNS is part of Harvard University. NR 36 TC 190 Z9 191 U1 8 U2 169 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1748-3387 J9 NAT NANOTECHNOL JI Nat. Nanotechnol. PD MAY PY 2012 VL 7 IS 5 BP 320 EP 324 DI 10.1038/NNANO.2012.50 PG 5 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA 940JC UT WOS:000303884800011 PM 22504708 ER PT J AU Fitzgerald, EMG Carrano, MT Holland, T Wagstaff, BE Pickering, D Rich, TH Vickers-Rich, P AF Fitzgerald, Erich M. G. Carrano, Matthew T. Holland, Timothy Wagstaff, Barbara E. Pickering, David Rich, Thomas H. Vickers-Rich, Patricia TI First ceratosaurian dinosaur from Australia SO NATURWISSENSCHAFTEN LA English DT Article DE Dinosauria; Theropoda; Ceratosauria; Abelisauroidea; Gondwana; Cretaceous ID SOUTHERN TYRANT REPTILE; ABELISAUROID DINOSAURIA; THEROPOD DINOSAUR; POLAR DINOSAURS; OSTEOLOGY; EVOLUTION; CHINA; GONDWANA; FAUNAS; ASIA AB The basal theropod dinosaur clade Ceratosauria, and its subclade Abelisauroidea, is characteristic of late Mesozoic terrestrial vertebrate faunas in western Gondwana (South America, Africa, Madagascar, and India) and Europe. Yet unambiguous records of ceratosaurs have hitherto been absent from Australia, where the theropod assemblage appears to include several typically Laurasian clades. Here, we report the first evidence of ceratosaurs (and potentially abelisauroids) from eastern Gondwana--a diagnostic astragalocalcaneum from the Aptian (121-125 Ma) of Victoria, Australia. Ceratosauria thus occurred in both western and eastern Gondwana during the Early Cretaceous. This fossil adds to the poorly known dinosaur fauna of Australia, a major clade of basal theropods, emphasising that its mid-Cretaceous theropod diversity was surprisingly cosmopolitan despite relative geographic isolation, including clades that have been thought to be typical of both Gondwana and Laurasia--Ceratosauria, Spinosauridae, Carcharodontosauria, Tyrannosauroidea, and Deinonychosauria. Such a contemporaneous association of theropod clades is unknown from other Gondwanan continents and questions the views that the late Mesozoic dinosaur fauna of Australia was dominated by Gondwanan or Laurasian elements, extreme isolation, relictualism, and/or novelty as a 'centre of origin'. The cosmopolitan theropod fauna of Australia probably reflects the global distribution of these clades early in their history, prior to significant continental breakup. C1 [Fitzgerald, Erich M. G.; Holland, Timothy; Pickering, David; Rich, Thomas H.; Vickers-Rich, Patricia] Museum Victoria, Melbourne, Vic 3001, Australia. [Fitzgerald, Erich M. G.; Carrano, Matthew T.] Smithsonian Inst, Natl Museum Nat Hist, Washington, DC 20013 USA. [Holland, Timothy; Rich, Thomas H.; Vickers-Rich, Patricia] Monash Univ, Sch Geosci, Melbourne, Vic 3800, Australia. [Wagstaff, Barbara E.] Univ Melbourne, Sch Earth Sci, Melbourne, Vic 3010, Australia. RP Fitzgerald, EMG (reprint author), Museum Victoria, GPO Box 666, Melbourne, Vic 3001, Australia. EM efitzgerald@museum.vic.gov.au RI Carrano, Matthew/C-7601-2011 OI Carrano, Matthew/0000-0003-2129-1612 FU Australian Research Council [LP0989203, LP100100330]; Museum Victoria; Harold Mitchell Foundation; Smithsonian Institution; Monash University FX BEW is supported by Australian Research Council Linkage Grant LP0989203. EMGF thanks Museum Victoria, the Harold Mitchell Foundation, and the Smithsonian Institution for their support. PVR and THR are supported by Australian Research Council Linkage Grant LP100100330, Museum Victoria and Monash University. L. Kool is thanked for performing the initial preparation of NMV P221202. We thank M. Cleeland for his discovery of NMV P221202. NR 58 TC 7 Z9 7 U1 1 U2 15 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0028-1042 EI 1432-1904 J9 NATURWISSENSCHAFTEN JI Naturwissenschaften PD MAY PY 2012 VL 99 IS 5 BP 397 EP 405 DI 10.1007/s00114-012-0915-3 PG 9 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 944BW UT WOS:000304174400006 PM 22552426 ER PT J AU Griffith, RL Cooper, MC Newman, JA Moustakas, LA Stern, D Comerford, JM Davis, M Lotz, JM Barden, M Conselice, CJ Capak, PL Faber, SM Kirkpatrick, JD Koekemoer, AM Koo, DC Noeske, KG Scoville, N Sheth, K Shopbell, P Willmer, CNA Weiner, B AF Griffith, Roger L. Cooper, Michael C. Newman, Jeffrey A. Moustakas, Leonidas A. Stern, Daniel Comerford, Julia M. Davis, Marc Lotz, Jennifer M. Barden, Marco Conselice, Christopher J. Capak, Peter L. Faber, S. M. Kirkpatrick, J. Davy Koekemoer, Anton M. Koo, David C. Noeske, Kai G. Scoville, Nick Sheth, Kartik Shopbell, Patrick Willmer, Christopher N. A. Weiner, Benjamin TI THE ADVANCED CAMERA FOR SURVEYS GENERAL CATALOG: STRUCTURAL PARAMETERS FOR APPROXIMATELY HALF A MILLION GALAXIES SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE catalogs; galaxies: evolution; galaxies: photometry; galaxies: structure; surveys ID DEEP FIELD-SOUTH; EMISSION-LINE GALAXIES; ACTIVE GALACTIC NUCLEI; LYMAN BREAK GALAXIES; GOODS-N FIELD; SIMILAR-TO 1; REDSHIFT SURVEY; PHOTOMETRIC REDSHIFTS; SPECTROSCOPIC SURVEY; OPTICAL SPECTROSCOPY AB We present the Advanced Camera for Surveys General Catalog (ACS-GC), a photometric and morphological database using publicly available data obtained with the Advanced Camera for Surveys (ACS) instrument on the Hubble Space Telescope. The goal of the ACS-GC database is to provide a large statistical sample of galaxies with reliable structural and distance measurements to probe the evolution of galaxies over a wide range of look-back times. The ACS-GC includes approximately 470,000 astronomical sources (stars + galaxies) derived from the AEGIS, COSMOS, GEMS, and GOODS surveys. Galapagos was used to construct photometric (SEXTRACTOR) and morphological (GALFIT) catalogs. The analysis assumes a single Sersic model for each object to derive quantitative structural parameters. We include publicly available redshifts from the DEEP2, COMBO-17, TKRS, PEARS, ACES, CFHTLS, and zCOSMOS surveys to supply redshifts (spectroscopic and photometric) for a considerable fraction (similar to 74%) of the imaging sample. The ACS-GC includes color postage stamps, GALFIT residual images, and photometry, structural parameters, and redshifts combined into a single catalog. C1 [Griffith, Roger L.; Kirkpatrick, J. Davy] CALTECH, Ctr Infrared Proc & Anal, Pasadena, CA 91125 USA. [Cooper, Michael C.] Univ Calif Irvine, Dept Phys & Astron, Ctr Galaxy Evolut, Irvine, CA 92697 USA. [Newman, Jeffrey A.] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh Particle Phys Astrophys & Cosmol Ctr, Pittsburgh, PA 15260 USA. [Moustakas, Leonidas A.; Stern, Daniel] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Comerford, Julia M.] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA. [Davis, Marc] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Lotz, Jennifer M.; Koekemoer, Anton M.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Barden, Marco] Univ Innsbruck, Inst Astro & Particle Phys, A-6020 Innsbruck, Austria. [Conselice, Christopher J.] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England. [Capak, Peter L.; Scoville, Nick; Sheth, Kartik; Shopbell, Patrick] CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA. [Noeske, Kai G.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Willmer, Christopher N. A.; Weiner, Benjamin] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. RP Griffith, RL (reprint author), CALTECH, Ctr Infrared Proc & Anal, Pasadena, CA 91125 USA. RI Conselice, Christopher/B-4348-2013; Moustakas, Leonidas/F-3052-2014; OI Moustakas, Leonidas/0000-0003-3030-2360; Conselice, Christopher/0000-0003-1949-7638; Weiner, Benjamin/0000-0001-6065-7483; Koekemoer, Anton/0000-0002-6610-2048 FU NASA/ESA [GO-10134, GO-09822, GO-09425.01, GO-09583.01, GO-9500]; NASA [NAS 5-26555]; NSF [AST00-71048]; NASA LTSA [NNG04GC89G]; ESO Paranal Observatory [LP175.A-0839] FX This work is based on (GO-10134, GO-09822, GO-09425.01, GO-09583.01, GO-9500) program observations with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. Work on this paper is based on observations obtained with MegaPrime/MegaCam, a joint project of CFHT and CEA/DAPNIA, at the Canada-France-Hawaii Telescope ( CFHT), which is operated by the National Research Council (NRC) of Canada, the Institut National des Science de l'Univers of the Centre National de la Recherche Scientifique (CNRS) of France, and the University of Hawaii. This work is based in part on data products produced at TERAPIX and the Canadian Astronomy Data Centre as part of the Canada-France-Hawaii Telescope Legacy Survey, a collaborative project of NRC and CNRS. Funding for the DEEP2 Galaxy Redshift Survey has been provided in part by NSF grant AST00-71048 and NASA LTSA grant NNG04GC89G. This work is also based on zCOSMOS observations carried out using the Very Large Telescope at the ESO Paranal Observatory under Program ID: LP175.A-0839. Some of the data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. NR 63 TC 15 Z9 15 U1 1 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD MAY PY 2012 VL 200 IS 1 AR 9 DI 10.1088/0067-0049/200/1/9 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 940YF UT WOS:000303928300009 ER PT J AU Kochanek, CS Eisenstein, DJ Cool, RJ Caldwell, N Assef, RJ Jannuzi, BT Jones, C Murray, SS Forman, WR Dey, A Brown, MJI Eisenhardt, P Gonzalez, AH Green, P Stern, D AF Kochanek, C. S. Eisenstein, D. J. Cool, R. J. Caldwell, N. Assef, R. J. Jannuzi, B. T. Jones, C. Murray, S. S. Forman, W. R. Dey, A. Brown, M. J. I. Eisenhardt, P. Gonzalez, A. H. Green, P. Stern, D. TI AGES: THE AGN AND GALAXY EVOLUTION SURVEY SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE cosmology: observations; galaxies: evolution; galaxies: general; quasars: general ID WIDE-FIELD SURVEY; IRAC SHALLOW SURVEY; DIGITAL-SKY-SURVEY; RESOLUTION SPECTRAL TEMPLATES; QUASAR LUMINOSITY FUNCTION; ACTIVE GALACTIC NUCLEI; FIBER-FED SPECTROGRAPH; VLT DEEP SURVEY; X-RAY SURVEY; STELLAR MASS AB The AGN and Galaxy Evolution Survey (AGES) is a redshift survey covering, in its standard fields, 7.7 deg(2) of the Bootes field of the NOAO Deep Wide-Field Survey. The final sample consists of 23,745 redshifts. There are well-defined galaxy samples in 10 bands (the B-W, R, I, J, K, IRAC3.6, 4.5, 5.8, and 8.0 mu m, and MIPS 24 mu m bands) to a limiting magnitude of I < 20 mag for spectroscopy. For these galaxies, we obtained 18,163 redshifts from a sample of 35,200 galaxies, where random sparse sampling was used to define statistically complete sub-samples in all 10 photometric bands. The median galaxy redshift is 0.31, and 90% of the redshifts are in the range 0.085 < z < 0.66. Active galactic nuclei (AGNs) were selected as radio, X-ray, IRAC mid-IR, and MIPS 24 mu m sources to fainter limiting magnitudes (I < 22.5 mag for point sources). Redshifts were obtained for 4764 quasars and galaxies with AGN signatures, with 2926, 1718, 605, 119, and 13 above redshifts of 0.5, 1, 2, 3, and 4, respectively. We detail all the AGES selection procedures and present the complete spectroscopic redshift catalogs and spectral energy distribution decompositions. Photometric redshift estimates are provided for all sources in the AGES samples. C1 [Kochanek, C. S.] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA. [Kochanek, C. S.] Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA. [Eisenstein, D. J.; Caldwell, N.; Jones, C.; Murray, S. S.; Forman, W. R.; Green, P.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Cool, R. J.] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA. [Cool, R. J.] Observ Carnegie Inst Washington, Pasadena, CA 91101 USA. [Assef, R. J.; Eisenhardt, P.; Stern, D.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Jannuzi, B. T.; Dey, A.] Natl Opt Astron Observ, Tucson, AZ 85719 USA. [Murray, S. S.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. [Brown, M. J. I.] Monash Univ, Sch Phys, Clayton, Vic 3800, Australia. [Gonzalez, A. H.] Univ Florida, Dept Astron, Bryant Space Sci Ctr, Gainesville, FL 32611 USA. RP Kochanek, CS (reprint author), Ohio State Univ, Dept Astron, 140 W 18th Ave, Columbus, OH 43210 USA. RI Brown, Michael/B-1181-2015 OI Brown, Michael/0000-0002-1207-9137 FU NASA at Jet Propulsion Laboratory; NSF; NOAO; Smithsonian Institution; NASA [NAS8-38248, NAS8-01130, NAS8- 39073, NAS8-03060, GO3-4176A] FX We thank the Hectospec instrument team and all the MMT Hectospec queue observers for making this project possible. We also thank T. Soifer, D. Weedman, J. Houck, M. Rieke, and collaborators for permission to use the results of their GTO Spitzer/MIPS survey of the Bootes field. R.J.A. is supported by an appointment to the NASA Postdoctoral Program at the Jet Propulsion Laboratory, administered by Oak Ridge Associated Universities through a contract with NASA. B.T.J. and A.D. are supported by the NSF through its funding of NOAO, which is operated for the NSF by AURA under a cooperative agreement. C.J., S.S.M., and W.R.F. acknowledge support from the Smithsonian Institution and by NASA contracts NAS8-38248, NAS8-01130, NAS8- 39073, and NAS8-03060, and NASA grant GO3-4176A. Observations reported here were obtained at the MMT Observatory, a joint facility of the Smithsonian Institution and the University of Arizona. This work made use of images and/or data products provided by the NOAO Deep Wide-Field Survey, which is supported by the National Optical Astronomy Observatory (NOAO). NOAO is operated by AURA, Inc., under a cooperative agreement with the National Science Foundation. This work is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Support for this work was provided by NASA through an award issued by JPL/Caltech. NR 74 TC 76 Z9 76 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD MAY PY 2012 VL 200 IS 1 AR 8 DI 10.1088/0067-0049/200/1/8 PG 20 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 940YF UT WOS:000303928300008 ER PT J AU Spezzano, S Tamassia, F Thorwirth, S Thaddeus, P Gottlieb, CA McCarthy, MC AF Spezzano, S. Tamassia, F. Thorwirth, S. Thaddeus, P. Gottlieb, C. A. McCarthy, M. C. TI A HIGH-RESOLUTION ISOTOPIC STUDY OF THE ROTATIONAL SPECTRUM OF c-C3H2 SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE ISM: molecules; line: identification; molecular data; molecular processes; radio lines: ISM ID RING MOLECULE C3H2; ASTRONOMICAL SPECTROSCOPY; DEUTERIUM FRACTIONATION; HYPERFINE-STRUCTURE; COLOGNE DATABASE; 2ND DERIVATIVES; DIFFUSE CLOUDS; DARK CLOUDS; BASIS-SETS; MANY-BODY AB The rotational spectra of the normal and seven isotopic species of cyclopropenylidene c-C3H2 have been measured at high spectral resolution by Fourier transform microwave spectroscopy of a supersonic molecular beam between 10 and 43 GHz. Deuterium quadrupole coupling and carbon-13 spin-rotation hyperfine constants were determined in addition to the rotational constants. Quartic and sextic centrifugal distortion constants derived from 28 lines between 150 and 316 GHz of the doubly deuterated species c-C3D2 allow the rotational spectrum to be calculated to 0.5 km s(-1) or better in equivalent radial velocity up to 500 GHz. Spectroscopic constants determined from four centimeter-wave and 19 millimeter-wave lines of the normal species c-C3H2, including 15 with sharp Lambdips, allow prediction of the most important astronomical transitions (i.e., those with Delta J = 1 and K-a <= 3) to 0.05 km s(-1) or better at 500 GHz. The doubly deuterated species is a good candidate for detection in cold dark clouds, because deuterium fractionation is high in c-C3H2 and lines of C3HD are fairly intense in these sources. An accurate empirical equilibrium structure of c-C3H2, derived from the experimental rotational constants of normal and isotopic c-C3H2, corrected for zero-point vibrational effects, is compared with previously reported structures. C1 [Spezzano, S.; Thaddeus, P.; Gottlieb, C. A.; McCarthy, M. C.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Spezzano, S.; Thaddeus, P.; Gottlieb, C. A.; McCarthy, M. C.] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA. [Spezzano, S.; Tamassia, F.] Univ Bologna, Dipartimento Chim Fis & Inorgan, I-40136 Bologna, Italy. [Spezzano, S.; Thorwirth, S.] Univ Cologne, Inst Phys 1, D-50937 Cologne, Germany. RP Spezzano, S (reprint author), Univ Cologne, Inst Phys 1, D-50937 Cologne, Germany. EM pthaddeus@cfa.harvard.edu; cgottlieb@cfa.harvard.edu; mccarthy@cfa.harvard.edu RI Thorwirth, Sven/C-6217-2011; OI Thorwirth, Sven/0000-0001-8200-6710; McCarthy, Michael/0000-0001-9142-0008 FU NASA [NNX08AE05G, NNX08AI41G]; Alma Mater Studiorum-University of Bologna; Deutsche Forschungsgemeinschaft (DFG) [TH 1301/3-1] FX We wish to thank Y. Shirley for suggesting we undertake the laboratory measurements of c-C3D2. The work in Cambridge is supported by NASA grants NNX08AE05G and NNX08AI41G. S. Spezzano thanks Alma Mater Studiorum-University of Bologna for the 'Fondazione Toso-Montanari' fellowship. S.T. is grateful to the Deutsche Forschungsgemeinschaft (DFG) for research Grant No. TH 1301/3-1. NR 53 TC 4 Z9 4 U1 3 U2 14 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD MAY PY 2012 VL 200 IS 1 AR 1 DI 10.1088/0067-0049/200/1/1 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 940YF UT WOS:000303928300001 ER PT J AU Neale, PJ Sobrino, C Gargett, AE AF Neale, Patrick J. Sobrino, Cristina Gargett, Ann E. TI Vertical mixing and the effects of solar radiation on photosystem II electron transport by phytoplankton in the Ross Sea Polynya SO DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS LA English DT Article DE Photosynthesis; Phytoplankton; Turbulence; Mixing processes; Southern Ocean; Acoustic backscatter; Fast repetition rate fluorometry ID FRAGILARIOPSIS-CYLINDRUS BACILLARIOPHYCEAE; REPETITION RATE FLUOROMETRY; SOUTHERN-OCEAN; PHAEOCYSTIS-ANTARCTICA; LANGMUIR CIRCULATION; PRIMARY PRODUCTIVITY; PHOTOSYNTHESIS; RATES; WATER; FLUORESCENCE AB Detailed studies were made in the springtime Ross Sea Polynya of the interaction between near-surface mixing processes, inferred from Thorpe scales and acoustic backscatter, and the quantum efficiency and rate of PSII electron transport of phytoplankton photosynthesis measured at fine depth and time scales by active fluorometry. The phytoplankton assemblage was dominated by Phaeocystis antarctica. Surface conditions alternated between windy episodes producing Langmuir circulation (LC) or calm periods favoring internal waves, in both cases there was significant vertical transport of phytoplankton. During LC episodes, strong near-surface ( < 10 m) vertical gradients in quantum efficiency and inhibition of electron transport were observed despite evidence of vigorous vertical exchange. Under sunny mid-day conditions, profiles of PSII electron transport had sub-surface peaks and electron transport at PAR irradiances > 40 mu mol photons m(-2) s(-1) was generally lower compared to early morning profiles on the same day. In time-series deployments, intrinsic quantum efficiency (F-v'/F-m') was relatively constant under calm conditions at 12 m, but highly variable at 6 m under LC conditions. Simultaneously measured time-series of acoustic backscatter and F-v'/F-m' during LC conditions were negatively correlated, i.e. high backscatter arising from the downward advection of surface originating micro-bubbles coincided with low intrinsic efficiency. Transport also occurred in connection with finer-scale features, possibly arising from breaking surface waves. These results show that LC in the Ross Sea Polynya, in combination with changes in quenching driven by near surface UVR and PAR exposure, reduce photosynthetic electron transport over much of the upper mixed layer. Further observations and modeling will be needed to establish the extent to which this decreases water column productivity. Published by Elsevier Ltd. C1 [Neale, Patrick J.; Sobrino, Cristina] Smithsonian Environm Res Ctr, Edgewater, MD 21037 USA. [Gargett, Ann E.] Old Dominion Univ, Ctr Coastal Phys Oceanog, Norfolk, VA 23508 USA. RP Neale, PJ (reprint author), Smithsonian Environm Res Ctr, POB 28, Edgewater, MD 21037 USA. EM nealep@si.edu RI Sobrino, Cristina/J-3534-2012; OI Sobrino, Cristina/0000-0003-0431-1220 FU National Science Foundation [OPP-0127037, OPP-0127022, OPP-0125818]; Scientific Committee for Antarctic Research; Spanish Ministry of Education and Science; RVIB Nathaniel B. Palmer FX The National Science Foundation is acknowledged for support to the MIXURS project (OPP-0127037 to P.J. Neale, OPP-0127022 to W. Jeffrey and OPP-0125818 to A.E. Gargett). C. Sobrino was supported by an Asturias Fellowship from the Scientific Committee for Antarctic Research and by the Spanish Ministry of Education and Science. The authors gratefully acknowledge the support of the officers and crew of the RVIB Nathaniel B. Palmer, the technical support staff from Raytheon Polar Services, and scientists aboard the October-December, 2005, Ross Sea cruise (NBP0508). Teresa Garner is thanked for programming support. John Marra and the Lamont-Doherty Earth Observatory are gratefully acknowledged for the loan of a FASTracka I instrument. NR 50 TC 7 Z9 7 U1 1 U2 27 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0967-0637 J9 DEEP-SEA RES PT I JI Deep-Sea Res. Part I-Oceanogr. Res. Pap. PD MAY PY 2012 VL 63 BP 118 EP 132 DI 10.1016/j.dsr.2012.01.011 PG 15 WC Oceanography SC Oceanography GA 936VV UT WOS:000303619000009 ER PT J AU Gammill, WM Fites, JS Rollins-Smith, LA AF Gammill, Whitney M. Fites, J. Scott Rollins-Smith, Louise A. TI Norepinephrine depletion of antimicrobial peptides from the skin glands of Xenopus laevis SO DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY LA English DT Article DE Antimicrobial peptide; Batrachochytrium dendrobatidis; Chytridiomycosis; Granular gland; Mucus gland; Norepinephrine ID EMERGING INFECTIOUS-DISEASE; GLOBAL AMPHIBIAN DECLINES; BATRACHOCHYTRIUM-DENDROBATIDIS; POPULATION DECLINES; AMERICAN BULLFROG; RANA-PIPIENS; IMMUNE DEFENSES; CHYTRID FUNGUS; TREE FROGS; CHYTRIDIOMYCOSIS AB The dermal granular glands of the South African clawed frog, Xenopus laevis, contain antimicrobial peptides (AMPs) that are secreted following local nerve stimulation. These natural antibiotics are active against bacteria and fungi including Batrachochytrium dendrobatidis, a fungal pathogen that causes the skin disease chytridiomycosis. Granular gland secretion can be stimulated in the laboratory by norepinephrine injection. We found that two injections of 80 nmol/g norepinephrine were necessary to fully deplete the AMP stores. One injection resulted in the secretion of most of the stored peptides. A second injection, 2 days later, released a small amount of additional AMPs that are not compositionally different from those released by the first injection. A third injection, 4 days after the first, did not result in further AMP release. Mass spectrometry and histology confirmed that glands are depleted after two injections. Periodic acid-Schiff staining indicated that mucus gland secretion was also induced by norepinephrine. (C) 2011 Elsevier Ltd. All rights reserved. C1 [Gammill, Whitney M.; Rollins-Smith, Louise A.] Vanderbilt Univ, Med Ctr, Dept Pathol Microbiol & Immunol, Nashville, TN 37232 USA. [Fites, J. Scott; Rollins-Smith, Louise A.] Vanderbilt Univ, Dept Biol Sci, Nashville, TN 37235 USA. [Rollins-Smith, Louise A.] Vanderbilt Univ, Med Ctr, Dept Pediat, Nashville, TN 37232 USA. [Rollins-Smith, Louise A.] Smithsonian Inst, Natl Zool Pk, Ctr Species Survival Conservat & Sci, Washington, DC 20013 USA. RP Rollins-Smith, LA (reprint author), Vanderbilt Univ, Med Ctr, Dept Pathol Microbiol & Immunol, A-5301 Med Ctr N, Nashville, TN 37232 USA. EM louise.rollins-smith@vanderbilt.edu FU National Science Foundation [IOS-0619536, IOS-0843207] FX This work was supported by the National Science Foundation Grants IOS-0619536 and IOS-0843207 (to L.R.-S.) and a National Science Foundation Graduate Research Fellowship (to W.M.G.). The authors thank James D. Pask (Department of Pathology, Microbiology and Immunology, Vanderbilt University, Nashville, TN) and the Vanderbilt Mass Spectrometry Core for assistance with MALDI-TOF Mass Spectrometry. The authors also thank Dr. Laetitia Tatiersky (Department of Pathobiology, University of Guelph, Ontario, Canada) for her advice in histology staining methods, the Vanderbilt Immunohistochemistry Core for assistance with skin tissue histology, and the laboratory of Dr. Eric Skaar at Vanderbilt University for the use of their Olympus microscope, camera, and software for histology photography. NR 83 TC 13 Z9 13 U1 2 U2 21 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0145-305X J9 DEV COMP IMMUNOL JI Dev. Comp. Immunol. PD MAY PY 2012 VL 37 IS 1 BP 19 EP 27 DI 10.1016/j.dci.2011.12.012 PG 9 WC Immunology; Zoology SC Immunology; Zoology GA 942EG UT WOS:000304024700003 PM 22227319 ER PT J AU Kelley, KA Cottrell, E AF Kelley, Katherine A. Cottrell, Elizabeth TI The influence of magmatic differentiation on the oxidation state of Fe in a basaltic arc magma SO EARTH AND PLANETARY SCIENCE LETTERS LA English DT Article DE oxygen fugacity; XANES; melt Inclusions; subduction; volatiles; degassing ID OVERLYING SUBDUCTION ZONES; MELT INCLUSIONS; OXYGEN FUGACITY; REDOX STATES; MARIANA ARC; UPPER-MANTLE; ISLAND ARCS; WAVELENGTH SHIFTS; GLASS INCLUSIONS; WESTERN PACIFIC AB Subduction zone basalts are more oxidized than basalts from other tectonic settings (e.g., higher Fe3+/Sigma Fe), and this contrast may play a central role in the unique geochemical processes that generate arc and continental crust. The processes generating oxidized arc magmas, however, are poorly constrained, although they appear inherently linked to subduction. Near-surface differentiation processes unique to arc settings might drive oxidation of magmas that originate in equilibrium with a relatively reduced mantle source. Alternatively, arc magmas could record the oxidation conditions of a relatively oxidized mantle source. Here, we present new measurements of olivine-hosted melt inclusions from a single eruption of Agrigan volcano, Marianas, in order to test the influence of differentiation processes vs. source conditions on the Fe3+/Sigma Fe ratio, a proxy for system oxygen fugacity (fO(2)). We determined Fe3+/Sigma Fe rations in glass inclusions using mu-XANES and couple these data with major elements, dissolved volatiles, and trace elements. After correcting for post-entrapment crystallization, Fe3+/Sigma Fe ratios in the Agrigan melt inclusions (0.219 to 0.282), and their modeled fO(2)s (Delta QFM +1.0 to +1.8), are uniformly more oxidized than MORB, and preserve a portion of the evolution of this magma from 5.7 to 3.2 wt.% MgO. Fractionation of olivine +/- clinopyroxene +/- plagioclase should increase Fe3+/Sigma Fe MgO. decreases in the melt, but the data show Fe3+/Sigma Fe ratios decreasing as MgO decreases below 5 wt.% MgO. The major element trajectories, taken in combination with this strong reduction trend, are inconsistent with crystallization of common ferromagnesian phases found in the bulk Agrigan sample, including magnetite. Rather, decreasing Fe3+/Sigma Fe rations correlate with decreading S concentrations, suggesting that electronic exchange associated with SO2 degassing may dominbate Fe3+/Sigma Fe variations in the melt during differentiation. In the case of this magma, the dominant effect of differentiation on magmatic fO(2) reduction rather than oxidation. Tracing back Agrigan melts with MgO > 5 wt.% (i.e., minimally degassed for S) along a modeled olivine factionation trend to primary melt in equilibrium with Fo(90) olivine reveals melts in equilibrium with the mantle beneath Agrigan at fO(2)s Delta QFM +1 to +1.6, significantly more oxidized than current constraints for the mantle beneath mid-ocean ridges. (C) 2012 Elsevier B.V. All rights reserved. C1 [Kelley, Katherine A.] Univ Rhode Isl, Grad Sch Oceanog, Narragansett, RI 02882 USA. [Cottrell, Elizabeth] Natl Museum Nat Hist, Smithsonian Inst, Washington, DC 20560 USA. RP Kelley, KA (reprint author), Univ Rhode Isl, Grad Sch Oceanog, Narragansett Bay Campus, Narragansett, RI 02882 USA. EM kelley@gso.uri.edu; cottrelle@si.edu RI Kelley, Katherine/J-3728-2013 OI Kelley, Katherine/0000-0002-7516-2683 FU NSF [OCE-0644625, EAR-0838328, MARGINS-EAR-0841108, MARGINS-EAR-0841006]; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-98CH10886]; EC; URI FX We are grateful for thorough reviews from Cin-Ty Lee, Chris Ballhaus, and Leonid Danyushevsky. We acknowledge constructive discussions with and inspiration from Cin-Ty Lee, Marc Hirschmann, Mac Rutherford, and Becky Lange. Terry Plank generously shared the source sample material and unpublished data to assist with this study, in addition to valuable thoughts and data on V partitioning. This work was made possible by the contributions of Benjamin Parks, who generated a pilot data set for this study through the GSO SURFO program, and Maryjo Brounce and Christa Jackson, who assisted in all aspects of data collection. Tony Lanzirotti contributed invaluable expertise in mu-XANES analysis and beamline operations at X26A. NSF Award OCE-0644625 provided curatorial support for marine geological samples at the University of Rhode Island. Use of the National Synchrotron Light Source, Brookhaven National Laboratory, was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-98CH10886. We acknowledge support from Smithsonian's Scholarly Studies Program (EC), a URI ADVANCE fellowship (KK) and NSF awards EAR-0838328 (KK), MARGINS-EAR-0841108 (KK) and MARGINS-EAR-0841006 (EC). NR 81 TC 63 Z9 63 U1 3 U2 66 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0012-821X J9 EARTH PLANET SC LETT JI Earth Planet. Sci. Lett. PD MAY 1 PY 2012 VL 329 BP 109 EP 121 DI 10.1016/j.epsl.2012.02.010 PG 13 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 936ZW UT WOS:000303629800011 ER PT J AU Crouse, DL Peters, PA van Donkelaar, A Goldberg, MS Villeneuve, PJ Brion, O Khan, S Atari, DO Jerrett, M Pope, CA Brauer, M Brook, JR Martin, RV Stieb, D Burnett, RT AF Crouse, Dan L. Peters, Paul A. van Donkelaar, Aaron Goldberg, Mark S. Villeneuve, Paul J. Brion, Orly Khan, Saeeda Atari, Dominic Odwa Jerrett, Michael Pope, C. Arden, III Brauer, Michael Brook, Jeffrey R. Martin, Randall V. Stieb, David Burnett, Richard T. TI Risk of Non accidental and Cardiovascular Mortality in Relation to Long-term Exposure to Low Concentrations of Fine Particulate Matter: A Canadian National-Level Cohort Study SO ENVIRONMENTAL HEALTH PERSPECTIVES LA English DT Article DE Canada; cardiovascular mortality; cohort study; fine particulate matter ID AIR-POLLUTION; DISEASE; HEALTH; ASSOCIATION; CITIES AB BACKGROUND: Few cohort studies have evaluated the risk of mortality associated with long-term exposure to fine particulate matter [<= 2.5 mu m in aerodynamic diameter (PM2.5)]. This is the first national-level cohort study to investigate these risks in Canada. OBJECTIVE: We investigated the association between long-term exposure to ambient PM2.5 and cardio vascular mortality in non immigrant Canadian adults. METHODS: We assigned estimates of exposure to ambient PM2.5 derived from satellite observations to a cohort of 2.1 million Canadian adults who in 1991 were among the 20% of the population mandated to provide detailed census data. We identified deaths occurring between 1991 and 2001 through record linkage. We calculated hazard ratios (HRs) and 95% confidence intervals (CIs) adjusted for available individual-level and contextual covariates using both standard Cox proportional survival models and nested, spatial random-effects survival models. RESULTS: Using standard Cox models, we calculated HRs of 1.15 (95% CI: 1.13, 1.16) from non-accidental causes and 1.31 (95% CI: 1.27, 1.35) from ischemic heart disease for each 10-mu g/m(3) increase in concentrations of PM2.5. Using spatial random-effects models controlling for the same variables, we calculated HRs of 1.10 (95% CI: 1.05, 1.15) and 1.30 (95% CI: 1.18, 1.43), respectively. We found similar associations between non accidental mortality and PM2.5 based on satellite-derived estimates and ground-based measurements in a subanalysis of subjects in 11 cities. CONCLUSIONS: In this large national cohort of non immigrant Canadians, mortality was associated with long-term exposure to PM2.5. Associations were observed with exposures to PM2.5 at concentrations that were predominantly lower (mean, 8.7 mu g/m(3); interquartile range, 6.2 mu g/m(3)) than those reported previously. C1 [Crouse, Dan L.] Hlth Canada, Ctr Environm Hlth, Environm Hlth Sci & Res Bur, Ottawa, ON K1A 0K9, Canada. [Peters, Paul A.; Khan, Saeeda; Atari, Dominic Odwa] STAT Canada, Hlth Anal Div, Ottawa, ON, Canada. [van Donkelaar, Aaron; Martin, Randall V.] Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS, Canada. [Goldberg, Mark S.] McGill Univ, Dept Med, Montreal, PQ, Canada. [Villeneuve, Paul J.; Brook, Jeffrey R.] Univ Toronto, Dalla Lana Sch Publ Hlth, Toronto, ON, Canada. [Jerrett, Michael] Univ Calif Berkeley, Sch Publ Hlth, Berkeley, CA 94720 USA. [Pope, C. Arden, III] Brigham Young Univ, Dept Econ, Provo, UT 84602 USA. [Brauer, Michael] Univ British Columbia, Sch Populat & Publ Hlth, Vancouver, BC V5Z 1M9, Canada. [Brook, Jeffrey R.] Environm Canada, Air Qual Res Div, Downsview, ON, Canada. [Martin, Randall V.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Crouse, DL (reprint author), Hlth Canada, Ctr Environm Hlth, Environm Hlth Sci & Res Bur, Room 155,50 Columbine Dr, Ottawa, ON K1A 0K9, Canada. EM daniel.crouse@hc-sc.gc.ca RI Martin, Randall/C-1205-2014; OI Martin, Randall/0000-0003-2632-8402; Peters, Paul/0000-0001-5225-2005; Brauer, Michael/0000-0002-9103-9343 FU Canadian government laboratory from the Natural Sciences and Engineering Research Council of Canada FX We thank S. Judek of Health Canada for compiling the ground-based data for fine particulate matter. D. L. C. gratefully acknowledges receipt of a visiting fellowship in a Canadian government laboratory from the Natural Sciences and Engineering Research Council of Canada. NR 31 TC 148 Z9 154 U1 7 U2 63 PU US DEPT HEALTH HUMAN SCIENCES PUBLIC HEALTH SCIENCE PI RES TRIANGLE PK PA NATL INST HEALTH, NATL INST ENVIRONMENTAL HEALTH SCIENCES, PO BOX 12233, RES TRIANGLE PK, NC 27709-2233 USA SN 0091-6765 J9 ENVIRON HEALTH PERSP JI Environ. Health Perspect. PD MAY PY 2012 VL 120 IS 5 BP 708 EP 714 DI 10.1289/ehp.1104049 PG 7 WC Environmental Sciences; Public, Environmental & Occupational Health; Toxicology SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Toxicology GA 935UF UT WOS:000303546000035 PM 22313724 ER PT J AU Andrews, BJ Manga, M AF Andrews, Benjamin J. Manga, Michael TI Experimental study of turbulence, sedimentation, and coignimbrite mass partitioning in dilute pyroclastic density currents SO JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH LA English DT Article DE Pyroclastic density current; Experiments; Turbulence; Pyroclastic deposits ID MOUNT ST-HELENS; DEPOSITIONAL PROCESSES; LASCAR VOLCANO; CANARY-ISLANDS; SURGE DEPOSITS; IGNIMBRITE; FLOWS; DYNAMICS; TRANSPORT; ERUPTION AB Laboratory density currents comprising warm talc powder turbulently suspended in air simulate many aspects of dilute pyroclastic density currents (PDCs) and demonstrate links between bulk current behavior, sedimentation, and turbulent structures. The densimetric and thermal Richardson, Froude, Stokes, and settling numbers match those of natural PDCs as does the ratio of thermal to kinetic energy density. The experimental currents have lower bulk Reynolds numbers than natural PDCs, but the experiments are fully turbulent. Consequently, the experiments are dynamically similar to the dilute portions of some natural currents. In general, currents traverse the floor of the experimental tank, sedimenting particles and turbulently entraining, heating, and thermally expanding air until all particle sediments or the currents become buoyant and lift off to form coignimbrite plumes. When plumes form, currents often undergo local flow reversals. Current runout distance and liftoff position decrease with increasing densimetric Richardson number and thermal energy density. As those parameters increase, total sedimentation decreases such that >50% of initial current mass commonly fractionates into the plumes, in agreement with some observations of recent volcanic eruptions. Sedimentation profiles are best described by an entraining sedimentation model rather than the exponential fit resulting from non-entraining box models. Time series analysis shows that sedimentation is not a constant rate process in the experiments, but rather occurs as series of sedimentation-erosion couplets that propagate across the tank floor tracking current motion and behavior. During buoyant liftoff, sedimentation beneath the rising plumes often becomes less organized. Auto-correlation analysis of time series of particle concentration is used to characterize the turbulent structures of the currents and indicates that currents quickly partition into a slow-moving upper portion and faster, more concentrated, lower portion. Air entrainment occurs within the upper region. Turbulent structures within the lower region track sedimentation-erosion waves and indicate that eddies control deposition. Importantly, both eddies and sedimentation waves track reversals in flow direction that occur following buoyant liftoff. Further, these results suggest that individual laminations within PDC deposits may record passage of single eddies, thus the duration of individual PDCs may be estimated as the product of the number of laminations and the current's turbulent timescale. Published by Elsevier B.V. C1 [Andrews, Benjamin J.] Smithsonian Inst, Dept Mineral Sci, Natl Museum Nat Hist, Washington, DC 20560 USA. [Manga, Michael] UC Berkeley, Dept Earth & Planetary Sci, Berkeley, CA USA. RP Andrews, BJ (reprint author), Smithsonian Inst, Dept Mineral Sci, Natl Museum Nat Hist, Washington, DC 20560 USA. EM andrewsb@si.edu RI Manga, Michael/D-3847-2013; OI Manga, Michael/0000-0003-3286-4682 FU NSF [EAR-0847366, EAR-080954] FX BJA was supported by the NSF Earth Sciences Postdoctoral Fellowship program under grant EAR-0847366. MM was supported by NSF grant EAR-080954. The experimental facility was constructed at UC Richmond Field Station with the assistance of Stuart Foster in a space provided by Leonard Sklar and Bill Dietrich. William Gange assisted with running many experiments. James E. Gardner graciously provided grain size analyses of the talc powder. Thoughtful reviews by G. Lube and P. Dellino improved this paper. NR 46 TC 23 Z9 23 U1 2 U2 21 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0377-0273 J9 J VOLCANOL GEOTH RES JI J. Volcanol. Geotherm. Res. PD MAY 1 PY 2012 VL 225 BP 30 EP 44 DI 10.1016/j.jvolgeores.2012.02.011 PG 15 WC Geosciences, Multidisciplinary SC Geology GA 941DK UT WOS:000303943700003 ER PT J AU Coyne, P Pisha, B Dalton, B Zeph, LA Smith, NC AF Coyne, Peggy Pisha, Bart Dalton, Bridget Zeph, Lucille A. Smith, Nancy Cook TI Literacy by Design: A Universal Design for Learning Approach for Students With Significant Intellectual Disabilities SO REMEDIAL AND SPECIAL EDUCATION LA English DT Article DE literacy; mental retardation; universal design for learning; technology ID INSTRUCTION; PROGRAM AB Literacy instruction for students with significant intellectual disabilities traditionally emphasizes isolated skills instruction focusing on sight words and basic vocabulary. Recent research suggests these students benefit from high-quality instruction that includes comprehension and storybook reading. This study examined the effect of a technology-based universal design for learning (UDL) approach to literacy instruction, Literacy by Design (LBD), on the reading achievement of 16 students with significant intellectual disabilities in Grades K-2. The LBD approach emphasizes reading for meaning, combining UDL-scaffolded e-books and letter and word recognition software. Nine teachers received training in research-based literacy practices. Of these, five received LBD training and implemented it four to five times weekly. Controlling for initial reading achievement, the LBD group made significantly greater gains on the Woodcock-Johnson Test of Achievement III Passage Comprehension subtest. Implications for research and practice in beginning reading instruction for children with significant intellectual disabilities are discussed. C1 [Coyne, Peggy; Pisha, Bart] CAST, Wakefield, MA 01881 USA. [Dalton, Bridget] Vanderbilt Univ, Peabody Coll Educ, Nashville, TN USA. [Zeph, Lucille A.] Univ Maine, Orono, ME USA. [Smith, Nancy Cook] Harvard Smithsonian Ctr Astrophys, Sci Educ Dept, Cambridge, MA 02138 USA. RP Coyne, P (reprint author), CAST, 40 Harvard Mills Sq,Suite 3, Wakefield, MA 01881 USA. EM pcoyne@cast.org NR 47 TC 15 Z9 15 U1 5 U2 31 PU SAGE PUBLICATIONS INC PI THOUSAND OAKS PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 USA SN 0741-9325 J9 REM SPEC EDUC JI Remedial Spec. Educ. PD MAY-JUN PY 2012 VL 33 IS 3 BP 162 EP 172 DI 10.1177/0741932510381651 PG 11 WC Education, Special SC Education & Educational Research GA 939MA UT WOS:000303814000003 ER PT J AU Gould, RR Sunbury, S Krumhansl, R AF Gould, Roy R. Sunbury, Susan Krumhansl, Ruth TI Using online telescopes to explore exoplanets from the physics classroom SO AMERICAN JOURNAL OF PHYSICS LA English DT Article ID PLANETS AB The search for habitable planets offers excellent opportunities to advance students' understanding of core ideas in physics, including gravity and the laws of motion, the interaction of light and matter, and especially the nature of scientific inquiry. Thanks to the development of online telescopes, students can detect more than a dozen of the known exoplanets from the classroom, using data they gather, assess, and interpret for themselves. We present a suite of activities in which students apply basic physics concepts to their investigations of exoplanets. The activities were developed and successfully tested with physics and earth science teachers in secondary schools in 14 states. Included are additional challenges and assessments suitable for introductory college physics courses. (C) 2012 American Association of Physics Teachers. [DOI:10.1119/1.3671072] C1 [Gould, Roy R.; Sunbury, Susan] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Krumhansl, Ruth] Educ Dev Ctr Inc, Newton, MA 02458 USA. RP Gould, RR (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM rgould@cfa.harvard.edu FU National Science Foundation [0733252] FX The authors thank the reviewers for their helpful suggestions. The authors are grateful to David Charbonneau, Lisa Kaltenegger, Matt Holman, and Phil Sadler for their advice during this project, and to our project collaborators Mary Dussault, Frank Sienkiewicz, Freeman Deutsch and Aladdin Ibrahim; and to the teachers who helped to develop and test these materials. This paper is based on work supported by the National Science Foundation under grant No. 0733252. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation. NR 14 TC 2 Z9 2 U1 0 U2 2 PU AMER ASSOC PHYSICS TEACHERS AMER INST PHYSICS PI MELVILLE PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA SN 0002-9505 J9 AM J PHYS JI Am. J. Phys. PD MAY PY 2012 VL 80 IS 5 BP 445 EP 451 DI 10.1119/1.3671072 PG 7 WC Education, Scientific Disciplines; Physics, Multidisciplinary SC Education & Educational Research; Physics GA 927YY UT WOS:000302947800014 ER PT J AU Hamdan, R El-Rifai, HM Cheesman, AW Turner, BL Reddy, KR Cooper, WT AF Hamdan, Rasha El-Rifai, Hasan M. Cheesman, Alexander W. Turner, Benjamin L. Reddy, K. Ramesh Cooper, William T. TI Linking Phosphorus Sequestration to Carbon Humification in Wetland Soils by P-31 and C-13 NMR Spectroscopy SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID MAGNETIC-RESONANCE-SPECTROSCOPY; NATURAL ORGANIC MATERIALS; HYDROFLUORIC-ACID; FOREST SOILS; CPMAS NMR; MATTER; DECOMPOSITION; SPECTRA; EXTRACTION; FRACTIONS AB Phosphorus sequestration in wetland soils is a prerequisite for long-term maintenance of water quality in downstream aquatic systems, but can be compromised if phosphorus is released following changes in nutrient status or hydrological regimen. The association of phosphorus with relatively refractory natural organic matter (e.g., humic substances) might protect soil phosphorus from such changes. Here we used hydrofluoric acid (HF) pretreatment to remove phosphorus associated with metals or anionic sorption sites, allowing us to isolate a pool of phosphorus associated with the soil organic fraction. Solution P-31 and solid state C-13 NMR spectra for wetland soils were acquired before and after hydrofluoric acid pretreatment to assess quantitatively and qualitatively the changes in phosphorus and carbon functional groups. Organic phosphorus was largely unaffected by HF treatment in soils dominated by refractory alkyl and aromatic carbon groups, indicating association of organic phosphorus with stable, humified soil organic matter. Conversely, a considerable decrease in organic phosphorus following HF pretreatment was detected in soils where O-alkyl groups represented the major fraction of the soil carbon. These correlations suggest that HF treatment can be used as a method to distinguish phosphorus fractions that are bound to the inorganic soil components from those fractions that are stabilized by incorporation into soil organic matter. C1 [Hamdan, Rasha; El-Rifai, Hasan M.; Cooper, William T.] Florida State Univ, Dept Chem & Biochem, Tallahassee, FL 32306 USA. [Cheesman, Alexander W.; Turner, Benjamin L.] Smithsonian Trop Res Inst, Balboa, Ancon, Panama. [Reddy, K. Ramesh] Univ Florida, Dept Soil & Water Sci, Gainesville, FL 32611 USA. RP Cooper, WT (reprint author), Florida State Univ, Dept Chem & Biochem, Tallahassee, FL 32306 USA. EM cooper@chem.fsu.edu RI Turner, Benjamin/E-5940-2011; Cheesman, Alexander/H-5918-2013 OI Turner, Benjamin/0000-0002-6585-0722; Cheesman, Alexander/0000-0003-3931-5766 FU U.S. Department of Agriculture [CSREES 2004-35107-14918] FX This work was supported by a grant from the U.S. Department of Agriculture (CSREES 2004-35107-14918). 31P and 13C NMR spectra were acquired in the Florida State University Department of Chemistry and Biochemistry NMR facility. The assistance of Dr. Tom Gedris, Staff Supervisor, is greatly appreciated. NR 48 TC 20 Z9 21 U1 1 U2 86 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD MAY 1 PY 2012 VL 46 IS 9 BP 4775 EP 4782 DI 10.1021/es204072k PG 8 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA 933GO UT WOS:000303348800018 PM 22423890 ER PT J AU Turner, BL Cheesman, AW Godage, HY Riley, AM Potter, BVL AF Turner, Benjamin L. Cheesman, Alexander W. Godage, H. Yasmin Riley, Andrew M. Potter, Barry V. L. TI Determination of neo- and D-chiro-Inositol Hexakisphosphate in Soils by Solution P-31 NMR Spectroscopy SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID NUCLEAR-MAGNETIC-RESONANCE; ORGANIC PHOSPHORUS; SCYLLO-INOSITOL; ALKALINE EXTRACTS; HEXAPHOSPHATE; PHOSPHATES; IDENTIFICATION; SEDIMENTS; FORMS; EDTA AB The inositol phosphates are an abundant but poorly understood group of organic phosphorus compounds found widely in the environment. Four stereoisomers of inositol hexakisphosphate (IP6) occur, although for three of these (scyllo, flea, and D-chiro) the origins, dynamics, and biological function remain unknown, due in large part to analytical limitations in their measurement in environmental samples. We synthesized authentic neo- and n-chiro-IP6 and used them to identify signals from these compounds in three soils from the Falkland Islands. Both compounds resisted hypobromite oxidation and gave quantifiable P-31 NMR signals at delta = 6.67 ppm (equatorial phosphate groups of the 4-equatorial/2-axial conformer of neo-IP6) and delta = 6.48 ppm (equatorial phosphate groups of the 2-equatorial/4-axial conformer of D-chiro-IP6) in soil extracts. Inositol hexakisphosphate accounted for 46-54% of the soil organic phosphorus, of which the four stereoisomers constituted, on average, 55.9% (myo), 32.8% (scyllo), 6.1% (neo), and 5.2% (n-chiro). Reappraisal of the literature based on the new signal assignments revealed that neo- and D-chiro-IP6 occur widely in both terrestrial and aquatic ecosystems. These results confirm that the inositol phosphates can constitute a considerable fraction of the organic phosphorus in soils and reveal the prevalence of neo- and D-chiro-IP6 in the environment. The hypobromite oxidation and solution P-31 NMR spectroscopy procedure allows the simultaneous quantification of all four IP6 stereoisomers in environmental samples and provides a platform for research into the origins and ecological significance of these enigmatic compounds. C1 [Turner, Benjamin L.; Cheesman, Alexander W.] Smithsonian Trop Res Inst, Balboa, Ancon, Panama. [Godage, H. Yasmin; Riley, Andrew M.; Potter, Barry V. L.] Univ Bath, Dept Pharm & Pharmacol, Wolfson Lab Med Chem, Bath BA2 7AY, Avon, England. RP Turner, BL (reprint author), Smithsonian Trop Res Inst, Apartado 0843-03092, Balboa, Ancon, Panama. EM TurnerBL@si.edu RI Turner, Benjamin/E-5940-2011; Riley, Andrew/F-3526-2013; Cheesman, Alexander/H-5918-2013 OI Turner, Benjamin/0000-0002-6585-0722; Cheesman, Alexander/0000-0003-3931-5766 FU Wellcome Trust [082837]; National High Magnetic Field Laboratory FX We thank Jim Rocca for technical support, Andrew Bell for providing soil samples, and Alan Richardson for providing an authentic sample of scyllo-IP6 from Dr. Dennis Cosgrove's original collection. The NMR spectroscopy was funded by the External User Program of the National High Magnetic Field Laboratory, administered through the Advanced Magnetic Resonance Imaging and Spectroscopy (AMRIS) facility of the McKnight Brain Institute, University of Florida. We thank the Wellcome Trust for a Programme Grant (082837) to B.V.L.P. and A.M.R. NR 54 TC 49 Z9 50 U1 3 U2 52 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD MAY 1 PY 2012 VL 46 IS 9 BP 4994 EP 5002 DI 10.1021/es204446z PG 9 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA 933GO UT WOS:000303348800044 PM 22489788 ER PT J AU Stanley, JD Bernasconi, MP AF Stanley, Jean-Daniel Bernasconi, Maria Pia TI Buried and Submerged Greek Archaeological Coastal Structures and Artifacts as Gauges to Measure Late Holocene Seafloor Subsidence off Calabria, Italy SO GEOARCHAEOLOGY-AN INTERNATIONAL JOURNAL LA English DT Article ID ANCIENT HARBOR STRUCTURES; REGIONAL UPLIFT; CROTONE BASIN; TECTONIC IMPLICATIONS; SOUTHERN CALABRIA; NORTHERN CALABRIA; IONIAN CALABRIA; MARINE TERRACES; LATE QUATERNARY; SILA MASSIF AB This synthesis integrates recently acquired archaeological and geological data with earlier documented observations to shed light on the subsidence of ancient Greek coastal facilities in southern Italy. These are now positioned between former shorelines and inner shelf sectors at five Calabrian margin localities. Submergence of coastal to inner shelf facilities has resulted in part from sea-level rise by about 2 m associated with glacio-hydro-isostatic factors since archaic to classic Greek time. This phenomenon alone, however, does not explain the wide variation of measured subsidence rates from site-to-site. The marked lowering of coastal site substrates by seismo-tectonic activity (including extensional fault motion), stratal readjustments at depth, and compaction of underlying sediment sequences is significant. Four of the subsided facilities are positioned near emerged Calabrian areas where prevailing Holocene average annual land uplift rates range to 1.0 mm/yr; at the fifth, near Hipponion, terrains have risen by nearly 2 mm/yr. In marked contrast, submerged and/or buried structures record the following late Holocene long-term average rates of coastal margin subsidence: Sybaris-Thuri on the Taranto Gulf margin (0.51.0 mm/yr); Hipponion-Vibo Valentia along the Tyrrhenian coast (0.8 to 3.2 mm/yr); and Locri-Epizefiri, Kaulonia, and Capo Colonna on Calabria's Ionian margin (1.6, 1.62.4, and 4.0 mm/yr, respectively). (c) 2012 Wiley Periodicals, Inc. C1 [Stanley, Jean-Daniel] Smithsonian Inst, Dept Paleobiol, Geoarchaeol Program, Washington, DC 20560 USA. [Bernasconi, Maria Pia] Univ Calabria, Dipartimento Sci Terra, Arcavacata Di Rende, CS, Italy. RP Stanley, JD (reprint author), Smithsonian Inst, Dept Paleobiol, Geoarchaeol Program, Washington, DC 20560 USA. EM stanleyd@si.edu FU Department of Paleobiology; ADRC Office, U.S. National Museum of Natural History, Smithsonian Institution, Washington, D.C.; Universita della Calabria, Rende FX We express our special appreciation to Dr. Maria Teresa Iannelli, Soprintendenza Archaeologica della Calabria, Reggio Calabria, for her continued generous support of our research efforts on the coastal margins of Calabria. We thank Dr. J.G. Royal, RPM-Nautical Foundation, Key West, Florida and G.A.J. Nickerson, Highland Geo Solutions, Taymouth, New Brunswick, Canada, for generously providing reprocessed multibeam sonar data sets from the Capo Colonna area and their assistance in interpreting them. Engineer P. Cappa of the Protected Marine Area "Capo Rizzuto," Crotone, made available valuable background data in the form of reports needed for our work on the margin seaward of the Crotone peninsula. Drs. C. Sabbione and M. Milanesio facilitated our study on the marine basin site at and seaward of the Locri-Epizefiri coastal margin, and Dr S. Luppino, Director of the Sybaris Museum and Archaeological Park, assisted us at the excavated site of Casa Bianca. Dr. S. Mariottini, Kodros Association, Mentana, Italy, generously shared photographic, video and other information on the submerged sites off Kaulonia and Hipponion-Vibo Valentia. Helpful reviews of earlier drafts of this article were made by Profs. E. Le Pera and F. Scarciglia, University of Calabria, Rende, Ms. K. Corwin, Smithsonian Institution, and two anonymous reviewers. Partial funding for this project was provided (to J.-D.S.) by research awards from the Department of Paleobiology and the ADRC Office, U.S. National Museum of Natural History, Smithsonian Institution, Washington, D.C., and (to M. P. B.) by Universita della Calabria, Rende. NR 90 TC 11 Z9 11 U1 0 U2 8 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0883-6353 J9 GEOARCHAEOLOGY JI Geoarchaeology PD MAY-JUN PY 2012 VL 27 IS 3 BP 189 EP 205 DI 10.1002/gea.21405 PG 17 WC Archaeology; Geosciences, Multidisciplinary SC Archaeology; Geology GA 929CQ UT WOS:000303039200001 ER PT J AU Novikova, I Walsworth, RL Xiao, YH AF Novikova, Irina Walsworth, Ronald L. Xiao, Yanhong TI Electromagnetically induced transparency-based slow and stored light in warm atoms SO LASER & PHOTONICS REVIEWS LA English DT Review DE Spin coherence; electromagnetically induced transparency; slow light; stored light; vapor cells; warm atoms ID POLARIZATION SELF-ROTATION; SCALABLE QUANTUM NETWORKS; VAPOR CELLS; RUBIDIUM VAPOR; SQUEEZED-LIGHT; COHERENT MEDIA; SINGLE-PHOTONS; GROUP-VELOCITY; LINEAR OPTICS; BUFFER-GAS AB This paper reviews recent efforts to realize a high-efficiency memory for optical pulses using slow and stored light based on electromagnetically induced transparency (EIT) in ensembles of warm atoms in vapor cells. After a brief summary of basic continuous-wave and dynamic EIT properties, studies using weak classical signal pulses in optically dense coherent media are discussed, including optimization strategies for stored light efficiency and pulse-shape control, and modification of EIT and slow/stored light spectral properties due to atomic motion. Quantum memory demonstrations using both single photons and pulses of squeezed light are then reviewed. Finally a brief comparison with other approaches is presented. C1 [Novikova, Irina] Coll William & Mary, Fac Phys, Williamsburg, VA 23187 USA. [Walsworth, Ronald L.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Walsworth, Ronald L.] Harvard Univ, Cambridge, MA 02138 USA. [Xiao, Yanhong] Fudan Univ, Fac Phys, Shanghai 200433, Peoples R China. RP Novikova, I (reprint author), Coll William & Mary, Fac Phys, Williamsburg, VA 23187 USA. EM inovikova@physics.wm.edu RI Novikova, Irina/B-9041-2008 NR 178 TC 65 Z9 66 U1 9 U2 71 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY SN 1863-8880 EI 1863-8899 J9 LASER PHOTONICS REV JI Laser Photon. Rev. PD MAY PY 2012 VL 6 IS 3 BP 333 EP 353 DI 10.1002/lpor.201100021 PG 21 WC Optics; Physics, Applied; Physics, Condensed Matter SC Optics; Physics GA 936NO UT WOS:000303597400005 ER PT J AU Nunez, ET Sobrino, C Neale, PJ Ceinos, RM Du, SJ Rotllant, J AF Torres Nunez, Eva Sobrino, Cristina Neale, Patrick J. Maria Ceinos, Rosa Du, ShaJun Rotllant, Josep TI Molecular Response to Ultraviolet Radiation Exposure in Fish Embryos: Implications for Survival and Morphological Development SO PHOTOCHEMISTRY AND PHOTOBIOLOGY LA English DT Article ID SOLAR UV-RADIATION; NUCLEOTIDE EXCISION-REPAIR; AQUATIC ECOSYSTEMS; B RADIATION; TERRESTRIAL ECOSYSTEMS; ZEBRAFISH EMBRYOS; SKIN FIBROBLASTS; DNA-DAMAGE; SPARC; EXPRESSION AB UVR exposure is known to cause developmental defects in a variety of organisms including aquatic species but little is known about the underlying molecular mechanisms. In this work we used zebrafish (Danio rerio) embryos as a model system to characterize the UVR effects on fish species. Larval viability was measured for embryos exposed to several UVR spectral treatments by using a solar simulator lamp and an array of UV cutoff filters under controlled conditions in the laboratory. Survival rate and occurrence of development abnormalities, mainly caudal (posterior) notochord bending/torsion, were seriously affected in UV-exposed larvae reaching values of 53% and 72%, respectively, compared with nonUV-exposed larvae after 6 days postfertilization (dpf). In order to elucidate the molecular mechanisms involved, a matricellular glycoprotein named osteonectin and the expression of a DNA-repair related gene, p53, were studied in relation to UVR exposure. The results indicate that osteonectin and p53 expression were increased under UVR exposure due to wavelengths shorter than 335 nm (i.e. mainly UVB) and 350 nm (i.e. short UVA and UVB), respectively. Furthermore, parallel experiments with microinjections of osteonectin-capped RNA showed that malformations induced by osteonectin overexpression were similar to those observed after a UVR exposure. Consequently this study shows a potential role of osteonectin in morphological deformities induced by solar UV radiation in zebrafish embryos. C1 [Torres Nunez, Eva; Maria Ceinos, Rosa; Rotllant, Josep] IIM CSIC, Inst Invest Marinas, Vigo, Spain. [Sobrino, Cristina] Univ Vigo, Dept Ecoloxia & Bioloxia Anim, Vigo 36310, Spain. [Neale, Patrick J.] Smithsonian Environm Res Ctr, Edgewater, MD 21037 USA. [Du, ShaJun] COMB UMBI, Ctr Marine Biotechnol, Baltimore, MD USA. RP Rotllant, J (reprint author), IIM CSIC, Inst Invest Marinas, Vigo, Spain. EM rotllant@iim.csic.es RI Sobrino, Cristina/J-3534-2012; Rotllant, Josep/K-1146-2014; Ceinos, Rosa/F-1683-2016; OI Rotllant, Josep/0000-0001-5331-807X; Ceinos, Rosa/0000-0002-3321-2961; du, Jim/0000-0001-9227-4153; Sobrino, Cristina/0000-0003-0431-1220 FU FPI [BES-2009-016797]; JAEDoc; Smithsonian Institution; MICIN [AGL2008-00392/ACU] FX This work was partly funded by a PhD grant (FPI BES-2009-016797) and a postdoctoral grant (JAEDoc) to ETN and RMC, respectively, by a Smithsonian Institution postdoctoral grant to CS and by the MICIN AGL2008-00392/ACU. NR 44 TC 4 Z9 4 U1 0 U2 16 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0031-8655 J9 PHOTOCHEM PHOTOBIOL JI Photochem. Photobiol. PD MAY-JUN PY 2012 VL 88 IS 3 BP 701 EP 707 DI 10.1111/j.1751-1097.2012.01088.x PG 7 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA 935EH UT WOS:000303501300027 ER PT J AU Meyer, KA Mackay, DH van Ballegooijen, AA AF Meyer, K. A. Mackay, D. H. van Ballegooijen, A. A. TI Solar Magnetic Carpet II: Coronal Interactions of Small-Scale Magnetic Fields SO SOLAR PHYSICS LA English DT Article DE Sun: magnetic fields ID ELEMENTARY HEATING EVENTS; RAY BRIGHT POINTS; 2 FLUX SOURCES; QUIET-SUN; CHROMOSPHERIC NETWORK; ACTIVE REGIONS; MODEL; RECONNECTION; CANCELLATION; EMERGENCE AB This paper is the second in a series of studies working towards constructing a realistic, evolving, non-potential coronal model for the solar magnetic carpet. In the present study, the interaction of two magnetic elements is considered. Our objectives are to study magnetic energy build-up, storage and dissipation as a result of emergence, cancellation, and flyby of these magnetic elements. In the future these interactions will be the basic building blocks of more complicated simulations involving hundreds of elements. Each interaction is simulated in the presence of an overlying uniform magnetic field, which lies at various orientations with respect to the evolving magnetic elements. For these three small-scale interactions, the free energy stored in the field at the end of the simulation ranges from 0.2 -aEuro parts per thousand 2.1x10(26) ergs, whilst the total energy dissipated ranges from 1.3 -aEuro parts per thousand 6.3x10(26) ergs. For all cases, a stronger overlying field results in higher energy storage and dissipation. For the cancellation and emergence simulations, motion perpendicular to the overlying field results in the highest values. For the flyby simulations, motion parallel to the overlying field gives the highest values. In all cases, the free energy built up is sufficient to explain small-scale phenomena such as X-ray bright points or nanoflares. In addition, if scaled for the correct number of magnetic elements for the volume considered, the energy continually dissipated provides a significant fraction of the quiet Sun coronal heating budget. C1 [Meyer, K. A.; Mackay, D. H.] Univ St Andrews, Sch Math & Stat, St Andrews KY16 9SS, Fife, Scotland. [van Ballegooijen, A. A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Meyer, KA (reprint author), Univ St Andrews, Sch Math & Stat, St Andrews KY16 9SS, Fife, Scotland. EM karen@mcs.st-and.ac.uk OI van Ballegooijen, Adriaan/0000-0002-5622-3540 FU ISSI (Bern); STFC; Royal Society; EU; ISSI FX We thank the anonymous referee, whose comments and suggestions have greatly improved the paper. In particular, we thank the referee for informing us of the calculation of the theoretical maximum free magnetic energy for an anti-parallel emergence in Section 3.3. K. A. M. would like to thank ISSI (Bern) for their support of the team 'Solar small-scale transient phenomena and their role in coronal heating', and the Harvard-Smithsonian Center for Astrophysics for their warm hospitality during the summers of 2010 and 2011. K. A. M. and D. H. M. acknowledge the financial support of the STFC. DHM would like to thank the Royal Society for their support through the research grant scheme, the EU-FP7 collaborative project SWIFF and ISSI. NR 59 TC 6 Z9 6 U1 0 U2 1 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0038-0938 J9 SOL PHYS JI Sol. Phys. PD MAY PY 2012 VL 278 IS 1 BP 149 EP 175 DI 10.1007/s11207-011-9924-1 PG 27 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 933WJ UT WOS:000303395600009 ER PT J AU Hope, KL Tell, LA Byrne, BA Murray, S Wetzlich, SE Ware, LH Lynch, W Padilla, LR Boedeker, NC AF Hope, Katharine L. Tell, Lisa A. Byrne, Barbara A. Murray, Suzan Wetzlich, Scott E. Ware, Lisa H. Lynch, Warren Padilla, Luis R. Boedeker, Nancy C. TI Pharmacokinetics of a single intramuscular injection of ceftiofur crystalline-free acid in American black ducks (Anas rubripes) SO AMERICAN JOURNAL OF VETERINARY RESEARCH LA English DT Article ID ARA-ARARAUNA; PLASMA; BLUE; DESFUROYLCEFTIOFUR; METABOLITE; PARROTS; SODIUM; CATTLE; BIRDS; MODEL AB Objective-To determine the pharmacokinetic properties of 1 IM injection of ceftiofur crystalline-free acid (CCFA) in American black ducks (Anas rubripes). Animals-20 adult American black ducks (6 in a preliminary experiment and 14 in a primary experiment). Procedures-Dose and route of administration of CCFA for the primary experiment were determined in a preliminary experiment. In the primary experiment, CCFA (10 mg/kg, IM) was administered to ducks. Ducks were allocated into 2 groups, and blood samples were obtained 0.25, 0.5, 1, 2, 4, 8, 12, 48, 96, 144, 192, and 240 hours or 0.25, 0.5, 1, 2, 4, 8, 24, 72, 120, 168, and 216 hours after administration of CCFA. Plasma concentrations of ceftiofur free acid equivalents (CFAEs) were determined by use of high-performance liquid chromatography. Data were evaluated by use of a naive pooled-data approach. Results-The area under the plasma concentration versus time curve from 0 hours to infinity was 783 h.mu g/mL, maximum plasma concentration observed was 13.1 mu g/mL, time to maximum plasma concentration observed was 24 hours, terminal phase half-life was 32.0 hours, time that concentrations of CFAEs were higher than the minimum inhibitory concentration (1.0 mu g/mL) for many pathogens of birds was 123 hours, and time that concentrations of CFAEs were higher than the target plasma concentration (4.0 mu g/mL) was 73.3 hours. Conclusions and Clinical Relevance-On the basis of the time that CFAE concentrations were higher than the target plasma concentration, a dosing interval of 3 days can be recommended for future multidose CCFA studies. (Am J Vet Res 2012;73:620-627) C1 [Hope, Katharine L.; Murray, Suzan; Boedeker, Nancy C.] Smithsonian Natl Zool Pk, Dept Anim Hlth, Washington, DC 20008 USA. [Tell, Lisa A.; Wetzlich, Scott E.] Univ Calif Davis, Sch Vet Med, Dept Med & Epidemiol, Davis, CA 95616 USA. [Byrne, Barbara A.] Univ Calif Davis, Sch Vet Med, Dept Pathol Microbiol & Immunol, Davis, CA 95616 USA. [Ware, Lisa H.; Lynch, Warren; Padilla, Luis R.] Smithsonian Natl Zool Pk, Smithsonian Conservat Biol Inst, Front Royal, VA 22630 USA. RP Hope, KL (reprint author), Smithsonian Natl Zool Pk, Dept Anim Hlth, 3001 Connecticut Ave NW, Washington, DC 20008 USA. EM hopek@si.edu FU Smithsonian Conservation and Biology Institute; Smithsonian National Zoological Park Department of Animal Health; Smithsonian National Zoological Park Department of Animal Programs FX Supported by the Smithsonian National Zoological Park Departments of Animal Health and Animal Programs and by the Smithsonian Conservation and Biology Institute. NR 31 TC 10 Z9 11 U1 1 U2 15 PU AMER VETERINARY MEDICAL ASSOC PI SCHAUMBURG PA 1931 N MEACHAM RD SUITE 100, SCHAUMBURG, IL 60173-4360 USA SN 0002-9645 J9 AM J VET RES JI Am. J. Vet. Res. PD MAY PY 2012 VL 73 IS 5 BP 620 EP 627 PG 8 WC Veterinary Sciences SC Veterinary Sciences GA 933LY UT WOS:000303364300005 PM 22533392 ER PT J AU Bryan, ML Alsubai, KA Latham, DW Parley, NR Cameron, AC Quinn, SN Carter, JA Fulton, BJ Berlind, P Brown, WR Buchhave, LA Calkins, ML Esquerdo, GA Furesz, G Jorgensen, UG Horne, KD Stefanik, RP Street, RA Torres, G West, RG Dominik, M Harpsoe, KBW Liebig, C Novati, SC Ricci, D Skottfelt, JF AF Bryan, Marta L. Alsubai, Khalid A. Latham, David W. Parley, Neil R. Cameron, Andrew Collier Quinn, Samuel N. Carter, Joshua A. Fulton, Benjamin J. Berlind, Perry Brown, Warren R. Buchhave, Lars A. Calkins, Michael L. Esquerdo, Gilbert A. Furesz, Gabor Jorgensen, Uffe Grae Horne, Keith D. Stefanik, Robert P. Street, Rachel A. Torres, Guillermo West, Richard G. Dominik, Martin Harpsoe, Kennet B. W. Liebig, Christine Novati, Sebastiano Calchi Ricci, Davide Skottfelt, Jesper F. TI QATAR-2: A K DWARF ORBITED BY A TRANSITING HOT JUPITER AND A MORE MASSIVE COMPANION IN AN OUTER ORBIT SO ASTROPHYSICAL JOURNAL LA English DT Article DE planetary systems; stars: individual (Qatar-2); techniques: photometric; techniques: radial velocities; techniques: spectroscopic ID PROPER-MOTION STARS; LIGHT CURVES; PLANET; ALGORITHM; CANDIDATES; PARAMETERS; ATMOSPHERE; SPECTRUM; SYSTEMS; SEARCH AB We report the discovery and initial characterization of Qatar-2b, a hot Jupiter transiting a V = 13.3 mag K dwarf in a circular orbit with a short period, P-b = 1.34 days. The mass and radius of Qatar-2b are M-P = 2.49 M-J and R-P = 1.14 R-J, respectively. Radial-velocity monitoring of Qatar-2 over a span of 153 days revealed the presence of a second companion in an outer orbit. The Systemic Console yielded plausible orbits for the outer companion, with periods on the order of a year and a companion mass of at least several M-J. Thus, Qatar-2 joins the short but growing list of systems with a transiting hot Jupiter and an outer companion with a much longer period. This system architecture is in sharp contrast to that found by Kepler for multi-transiting systems, which are dominated by objects smaller than Neptune, usually with tightly spaced orbits that must be nearly coplanar. C1 [Bryan, Marta L.] Harvard Univ, Dept Astron, Cambridge, MA 02138 USA. [Alsubai, Khalid A.] Qatar Fdn, Doha, Qatar. [Latham, David W.; Quinn, Samuel N.; Carter, Joshua A.; Berlind, Perry; Brown, Warren R.; Calkins, Michael L.; Esquerdo, Gilbert A.; Furesz, Gabor; Stefanik, Robert P.; Torres, Guillermo] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Parley, Neil R.; Cameron, Andrew Collier; Horne, Keith D.; Dominik, Martin; Liebig, Christine] Univ St Andrews, Sch Phys & Astron, SUPA, St Andrews KY16 9SS, Fife, Scotland. [Fulton, Benjamin J.; Street, Rachel A.] Las Cumbres Observ Global Telescope Network, Goleta, CA 93117 USA. [Buchhave, Lars A.; Jorgensen, Uffe Grae; Harpsoe, Kennet B. W.; Skottfelt, Jesper F.] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark. [Buchhave, Lars A.; Jorgensen, Uffe Grae; Harpsoe, Kennet B. W.; Skottfelt, Jesper F.] Geol Museum, Ctr Star & Planet Format, DK-1350 Copenhagen, Denmark. [West, Richard G.] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England. [Novati, Sebastiano Calchi] Univ Salerno, Dipartimento Fis ER Caianiello, I-84081 Baronissi, SA, Italy. [Novati, Sebastiano Calchi] Ist Nazl Fis Nucl, Grp Collegato Salerno, Sez Napoli, Salerno, Italy. [Ricci, Davide] Inst Astrophys & Geophys, B-4000 Liege, Belgium. [Furesz, Gabor] Hungarian Acad Sci, Konkoly Observ, Budapest, Hungary. RP Bryan, ML (reprint author), Harvard Univ, Dept Astron, Cambridge, MA 02138 USA. RI Carter, Joshua/A-8280-2013; OI Dominik, Martin/0000-0002-3202-0343; Buchhave, Lars A./0000-0003-1605-5666; Cameron, Andrew/0000-0002-8863-7828; Ricci, Davide/0000-0002-9790-0552 FU Hungarian OTKA-NFU [MB08C 81013]; Qatar Foundation from QNRF [NPRP-09-476-1-078]; Communaute francaise de Belgique-Actions de recherche concertees-Academie universitaire Wallonie-Europe FX G.F. acknowledges financial support from the Hungarian OTKA-NFU Mobility grant MB08C 81013. C.L. acknowledges the Qatar Foundation for support from QNRF grant NPRP-09-476-1-078. D.R. (boursier FRIA) acknowledges support from the Communaute francaise de Belgique-Actions de recherche concertees-Academie universitaire Wallonie-Europe. The Byrne Observatory at Sedgwick (BOS) is operated by the Las Cumbres Observatory Global Telescope Network and is located at the Sedgwick Reserve, a part of the University of California Natural Reserve System. We thank the anonymous referee for several helpful suggestions for improving the clarity of the manuscript and the interpretation of the results. NR 35 TC 10 Z9 10 U1 1 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY PY 2012 VL 750 IS 1 AR 84 DI 10.1088/0004-637X/750/1/84 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 929LB UT WOS:000303063500084 ER PT J AU Dawson, RI Murray-Clay, R AF Dawson, Rebekah I. Murray-Clay, Ruth TI NEPTUNE'S WILD DAYS: CONSTRAINTS FROM THE ECCENTRICITY DISTRIBUTION OF THE CLASSICAL KUIPER BELT SO ASTROPHYSICAL JOURNAL LA English DT Article DE celestial mechanics; Kuiper belt: general; planets and satellites: dynamical evolution and stability; planets and satellites: individual (Neptune) ID SOLAR-SYSTEM; INCLINATION DISTRIBUTION; ORIGIN; MIGRATION; INSTABILITY; OBJECTS; BODIES; URANUS; ORBIT; AU AB Neptune's dynamical history shaped the current orbits of Kuiper Belt objects (KBOs), leaving clues to the planet's orbital evolution. In the "classical" region, a population of dynamically "hot" high-inclination KBOs overlies a flat "cold" population with distinct physical properties. Simulations of qualitatively different histories for Neptune, including smooth migration on a circular orbit or scattering by other planets to a high eccentricity, have not simultaneously produced both populations. We explore a general Kuiper Belt assembly model that forms hot classical KBOs interior to Neptune and delivers them to the classical region, where the cold population forms in situ. First, we present evidence that the cold population is confined to eccentricities well below the limit dictated by long-term survival. Therefore, Neptune must deliver hot KBOs into the long-term survival region without excessively exciting the eccentricities of the cold population. Imposing this constraint, we explore the parameter space of Neptune's eccentricity and eccentricity damping, migration, and apsidal precession. We rule out much of parameter space, except where Neptune is scattered to a moderately eccentric orbit (e > 0.15) and subsequently migrates a distance Delta a(N) = 1-6 AU. Neptune's moderate eccentricity must either damp quickly or be accompanied by fast apsidal precession. We find that Neptune's high eccentricity alone does not generate a chaotic sea in the classical region. Chaos can result from Neptune's interactions with Uranus, exciting the cold KBOs and placing additional constraints. Finally, we discuss how to interpret our constraints in the context of the full, complex dynamical history of the solar system. C1 [Dawson, Rebekah I.; Murray-Clay, Ruth] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Dawson, RI (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St,MS 51, Cambridge, MA 02138 USA. EM rdawson@cfa.harvard.edu FU National Science Foundation [DGE064449, DGE0946799, DGE 1144152]; FAS Sciences Division Research Computing Group FX R.I.D. gratefully acknowledges support by the National Science Foundation Graduate Research Fellowship under grants DGE064449, DGE0946799, and DGE 1144152. The numerical integrations in this paper were run on the Odyssey cluster supported by the FAS Sciences Division Research Computing Group. We thank Gurtina Besla, David Charbonneau, Matija Cuk, Matthew Holman, Kaitlin Kratter, David Latham, Renu Malhotra, Diego Munoz, Darin Raggozine, Schuyler Wolff, and Kathryn Volk for helpful discussions. We thank Konstantin Batygin, Daniel Fabrycky, Darin Raggozine, Kathryn Volk, and Jack Wisdom for insightful comments on a manuscript draft. We are grateful to Hal Levison for many helpful comments on improving this paper. We gratefully acknowledge an anonymous referee for constructive feedback. NR 44 TC 23 Z9 23 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY PY 2012 VL 750 IS 1 AR 43 DI 10.1088/0004-637X/750/1/43 PG 29 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 929LB UT WOS:000303063500043 ER PT J AU Dupree, AK Brickhouse, NS Cranmer, SR Luna, GJM Schneider, EE Bessell, MS Bonanos, A Crause, LA Lawson, WA Mallik, SV Schuler, SC AF Dupree, A. K. Brickhouse, N. S. Cranmer, S. R. Luna, G. J. M. Schneider, E. E. Bessell, M. S. Bonanos, A. Crause, L. A. Lawson, W. A. Mallik, S. V. Schuler, S. C. TI TW Hya: SPECTRAL VARIABILITY, X-RAYS, AND ACCRETION DIAGNOSTICS SO ASTROPHYSICAL JOURNAL LA English DT Article DE accretion, accretion disks; stars: individual (TW Hydrae); stars: pre-main sequence; stars: variables: T Tauri, Herbig Ae/Be; stars: winds, outflows ID TAURI MAGNETOSPHERIC ACCRETION; EMISSION-LINE DIAGNOSTICS; ORION NEBULA CLUSTER; DISK ACCRETION; BROWN DWARFS; TIME-SERIES; STARS; HYDRAE; MODELS; SPECTROSCOPY AB The nearest accreting T Tauri star, TW Hya was intensively and continuously observed over similar to 17 days with spectroscopic and photometric measurements from four continents simultaneous with a long segmented exposure using the Chandra satellite. Contemporaneous optical photometry from WASP-S indicates a 4.74 day period was present during this time. The absence of a similar periodicity in the H alpha flux and the total X-ray flux which are dominated by accretion processes and the stellar corona, respectively, points to a different source of photometric variations. The H alpha emission line appears intrinsically broad and symmetric, and both the profile and its variability suggest an origin in the post-shock cooling region. An accretion event, signaled by soft X-rays, is traced spectroscopically for the first time through the optical emission line profiles. After the accretion event, downflowing turbulent material observed in the H alpha and H beta lines is followed by He I (lambda 5876) broadening near the photosphere. Optical veiling resulting from the heated photosphere increases with a delay of similar to 2 hr after the X-ray accretion event. The response of the stellar coronal emission to an increase in the veiling follows similar to 2.4 hr later, giving direct evidence that the stellar corona is heated in part by accretion. Subsequently, the stellar wind becomes re-established. We suggest a model that incorporates the dynamics of this sequential series of events: an accretion shock, a cooling downflow in a supersonically turbulent region, followed by photospheric and later, coronal heating. This model naturally explains the presence of broad optical and ultraviolet lines, and affects the mass accretion rates determined from emission line profiles. C1 [Dupree, A. K.; Brickhouse, N. S.; Cranmer, S. R.; Luna, G. J. M.; Schneider, E. E.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Bessell, M. S.] Mt Stromlo & Siding Spring Observ, Australian Natl Observ, Canberra, ACT 2611, Australia. [Bonanos, A.] Natl Observ Athens, Inst Astron & Astrophys, Athens 15236, Greece. [Crause, L. A.] S African Astron Observ, ZA-7935 Cape Town, South Africa. [Lawson, W. A.] Univ New S Wales, Sch Phys Environm & Math Sci, Canberra, ACT 2600, Australia. [Mallik, S. V.] Indian Inst Astrophys, Bangalore 560034, Karnataka, India. [Schuler, S. C.] Natl Opt Astron Observ, Tucson, AZ 85719 USA. RP Dupree, AK (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. RI Bonanos, Alceste/K-5392-2013; OI Bonanos, Alceste/0000-0003-2851-1905; Brickhouse, Nancy/0000-0002-8704-4473 FU Science and Technology Facilities Council of the UK FX We are grateful to Jonathan Irwin for assistance with the WASP data. The WASP consortium comprises the University of Cambridge, Keele University, University of Leicester, The Open University, The Queens University Belfast, St. Andrews University, and the Isaac Newton Group. Funding for WASP comes from the consortium universities and from the Science and Technology Facilities Council of the UK. We appreciate the efforts of Luca DiFabrizio who reduced the TNG/SARG spectrum. This paper includes data gathered with the 6.5 m Magellan Telescopes located at Las Campanas Observatory, Chile. Also, based on observations obtained at the Gemini Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., under a cooperative agreement with the NSF on behalf of the Gemini partnership: the National Science Foundation (United States), the Science and Technology Facilities Council (United Kingdom), the National Research Council (Canada), CONICYT (Chile), the Australian Research Council (Australia), Ministerio da Ciencia, Tecnologia e Inovacao (Brazil), and Ministerio de Ciencia, Tecnologia e Innovacion Productiva (Argentina). NR 51 TC 23 Z9 23 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY PY 2012 VL 750 IS 1 AR 73 DI 10.1088/0004-637X/750/1/73 PG 19 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 929LB UT WOS:000303063500073 ER PT J AU Gunther, HM Wolk, SJ Drake, JJ Lisse, CM Robrade, J Schmitt, JHMM AF Guenther, H. M. Wolk, S. J. Drake, J. J. Lisse, C. M. Robrade, J. Schmitt, J. H. M. M. TI SOFT CORONAL X-RAYS FROM beta PICTORIS SO ASTROPHYSICAL JOURNAL LA English DT Article DE stars: activity; stars: chromospheres; stars: coronae; stars: individual: beta Pictoris; X-rays: stars ID HIGH-RESOLUTION CAMERA; IN-FLIGHT PERFORMANCE; DARKEST BRIGHT STAR; WIND-SHOCK MODEL; SOLAR-LIKE STARS; ALL-SKY SURVEY; OB-TYPE STARS; CIRCUMSTELLAR DISK; MOVING GROUP; HERBIG STAR AB A-type stars are expected to be X-ray dark, yet weak emission has been detected from several objects in this class. We present new Chandra/HRC-I observations of the A5 V star beta Pictoris. It is clearly detected with a flux of (9 +/- 2) x 10(-4) counts s(-1). In comparison with previous data this constrains the emission mechanism and we find that the most likely explanation is an optically thin, collisionally dominated, thermal emission component with a temperature around 1.1 MK. We interpret this component as a very cool and dim corona, with log L-X/L-bol = -8.2 (0.2-2.0 keV). Thus, it seems that beta Pictoris shares more characteristics with cool stars than previously thought. C1 [Guenther, H. M.; Wolk, S. J.; Drake, J. J.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Lisse, C. M.] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA. [Robrade, J.; Schmitt, J. H. M. M.] Univ Hamburg, Hamburger Sternwarte, D-21029 Hamburg, Germany. RP Gunther, HM (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM hguenther@cfa.harvard.edu RI Lisse, Carey/B-7772-2016; OI Lisse, Carey/0000-0002-9548-1526; Gunther, Hans Moritz/0000-0003-4243-2840 FU National Aeronautics and Space Administration through Chandra X-ray Observatory Center [GO2-13015X]; National Aeronautics Space Administration [NAS8-03060] FX Support for this work was provided by the National Aeronautics and Space Administration through the Chandra Award Number GO2-13015X issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics Space Administration under the contract NAS8-03060. NR 42 TC 4 Z9 4 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY PY 2012 VL 750 IS 1 AR 78 DI 10.1088/0004-637X/750/1/78 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 929LB UT WOS:000303063500078 ER PT J AU Hughes, AM Wilner, DJ Mason, B Carpenter, JM Plambeck, R Chiang, HF Andrews, SM Williams, JP Hales, A Su, K Chiang, E Dicker, S Korngut, P Devlin, M AF Hughes, A. Meredith Wilner, David J. Mason, Brian Carpenter, John M. Plambeck, Richard Chiang, Hsin-Fang Andrews, Sean M. Williams, Jonathan P. Hales, Antonio Su, Kate Chiang, Eugene Dicker, Simon Korngut, Phil Devlin, Mark TI CONFIRMING THE PRIMARILY SMOOTH STRUCTURE OF THE VEGA DEBRIS DISK AT MILLIMETER WAVELENGTHS SO ASTROPHYSICAL JOURNAL LA English DT Article DE circumstellar matter; planetary systems; planet-disk interactions; stars: individual (Vega) ID BETA-PICTORIS; KUIPER-BELT; HR 8799; CIRCUMSTELLAR DISK; SOLAR-SYSTEM; NEARBY STARS; DUSTY DEBRIS; HD 107146; POLE-ON; SUBMILLIMETER AB Clumpy structure in the debris disk around Vega has been previously reported at millimeter wavelengths and attributed to concentrations of dust grains trapped in resonances with an unseen planet. However, recent imaging at similar wavelengths with higher sensitivity has disputed the observed structure. We present three new millimeter-wavelength observations that help to resolve the puzzling and contradictory observations. We have observed the Vega system with the Submillimeter Array (SMA) at a wavelength of 880 mu m and an angular resolution of 5 ''; with the Combined Array for Research in Millimeter-wave Astronomy (CARMA) at a wavelength of 1.3 mm and an angular resolution of 5 ''; and with the Green Bank Telescope (GBT) at a wavelength of 3.3 mm and angular resolution of 10 ''. Despite high sensitivity and short baselines, we do not detect the Vega debris disk in either of the interferometric data sets (SMA and CARMA), which should be sensitive at high significance to clumpy structure based on previously reported observations. We obtain a marginal (3 sigma) detection of disk emission in the GBT data; the spatial distribution of the emission is not well constrained. We analyze the observations in the context of several different models, demonstrating that the observations are consistent with a smooth, broad, axisymmetric disk with inner radius 20-100 AU and width greater than or similar to 50 AU. The interferometric data require that at least half of the 860 mu m emission detected by previous single-dish observations with the James Clerk Maxwell Telescope be distributed axisymmetrically, ruling out strong contributions from flux concentrations on spatial scales of less than or similar to 100 AU. These observations support recent results from the Plateau de Bure Interferometer indicating that previous detections of clumpy structure in the Vega debris disk were spurious. C1 [Hughes, A. Meredith; Plambeck, Richard; Chiang, Eugene] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Wilner, David J.; Andrews, Sean M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Mason, Brian] Natl Radio Astron Observ, Charlottesville, VA 22903 USA. [Carpenter, John M.] CALTECH, Dept Astron, Pasadena, CA 91125 USA. [Chiang, Hsin-Fang] Univ Hawaii, Inst Astron, Hilo, HI 96720 USA. [Chiang, Hsin-Fang] Univ Illinois, Dept Astron, Urbana, IL 61801 USA. [Williams, Jonathan P.] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA. [Hales, Antonio] Joint ALMA Observ, Santiago, Chile. [Su, Kate] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. [Dicker, Simon; Korngut, Phil; Devlin, Mark] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA. RP Hughes, AM (reprint author), Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA. EM mhughes@astro.berkeley.edu OI Williams, Jonathan/0000-0001-5058-695X; Su, Kate/0000-0002-3532-5580 FU Miller Institute for Basic Research in Science; NSF [AST-1007905, AST-0909210]; Millennium Science Initiative, Chilean Ministry of Economy: Nucleus [P10-022-F]; [AGBT08C026] FX We thank Mark Wyatt for providing us with his model of the planetesimal distribution in the Vega system. The authors also thank the MUSTANG instrument team from the University of Pennsylvania, NRAO, Cardiff University, NASA-GSFC, and NIST for their efforts on the instrument and software that have made this work possible. The GBT data were obtained under the auspices of observing program AGBT08C026. A.M.H. is supported by a fellowship from the Miller Institute for Basic Research in Science. S. Dicker is supported by NSF AST-1007905. A.H. acknowledges support from Millennium Science Initiative, Chilean Ministry of Economy: Nucleus P10-022-F. E.C. acknowledges support by NSF grant AST-0909210. NR 55 TC 13 Z9 14 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD MAY PY 2012 VL 750 IS 1 AR 82 DI 10.1088/0004-637X/750/1/82 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 929LB UT WOS:000303063500082 ER PT J AU King, C Brown, WR Geller, MJ Kenyon, SJ AF King, Charles, III Brown, Warren R. Geller, Margaret J. Kenyon, Scott J. TI IDENTIFYING STAR STREAMS IN THE MILKY WAY HALO SO ASTROPHYSICAL JOURNAL LA English DT Article DE blue stragglers; galaxies: individual (Sagittarius dwarf galaxy); Galaxy: halo; Galaxy: kinematics and dynamics; Galaxy: stellar content; Galaxy: structure; stars: horizontal-branch ID SAGITTARIUS DWARF GALAXY; ALL-SKY SURVEY; VELOCITY EXPERIMENT RAVE; HYPERVELOCITY STARS; STELLAR HALO; THEORETICAL ISOCHRONES; PHOTOMETRIC SYSTEMS; TIDAL STREAMS; GALACTIC HALO; DATA RELEASE AB We develop statistical methods for identifying star streams in the halo of the Milky Way that exploit observed spatial and radial velocity distributions. Within a great circle, departures of the observed spatial distribution from random provide a measure of the likelihood of a potential star stream. Comparisons between the radial velocity distribution within a great circle and the radial velocity distribution of the entire sample also measure the statistical significance of potential streams. The radial velocities enable construction of a more powerful joint statistical test for identifying star streams in the Milky Way halo. Applying our method to halo stars in the Hypervelocity Star (HVS) survey, we detect the Sagittarius stream at high significance. Great circle counts and comparisons with theoretical models suggest that the Sagittarius stream comprises 10%-17% of the halo stars in the HVS sample. The population of blue stragglers and blue horizontal branch stars varies along the stream and is a potential probe of the distribution of stellar populations in the Sagittarius dwarf galaxy prior to disruption. C1 [King, Charles, III; Brown, Warren R.; Geller, Margaret J.; Kenyon, Scott J.] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. [King, Charles, III] Pleiades Consulting Grp Inc, Lincoln, MA 01773 USA. RP King, C (reprint author), Smithsonian Astrophys Observ, 60 Garden St, Cambridge, MA 02138 USA. EM cking@cfa.harvard.edu; wbrown@cfa.harvard.edu; mgeller@cfa.harvard.edu; skenyon@cfa.harvard.edu OI Kenyon, Scott/0000-0003-0214-609X FU Smithsonian Institution; Pleiades Consulting Group Inc. FX We thank M. Alegria, J. McAfee, A. Milone, and the rest of the MMTO staff for their assistance with observations obtained at the MMT Observatory. We thank David Law for providing us with N-body simulations from his model of the Sagittarius stream. We also thank the referee for helpful comments. This project makes use of data products from the Sloan Digital Sky Survey, which is managed by the Astrophysical Research Consortium for the Participating Institutions. This research makes use of NASA's Astrophysics Data System Bibliographic Services. This work was supported by the Smithsonian Institution. C.K. gratefully acknowledges additional support from Pleiades Consulting Group Inc. and dedicates this work to the memory of Dr. Natarajan Visvanathan. NR 49 TC 5 Z9 5 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY PY 2012 VL 750 IS 1 AR 81 DI 10.1088/0004-637X/750/1/81 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 929LB UT WOS:000303063500081 ER PT J AU Meyers, J Aldering, G Barbary, K Barrientos, LF Brodwin, M Dawson, KS Deustua, S Doi, M Eisenhardt, P Faccioli, L Fakhouri, HK Fruchter, AS Gilbank, DG Gladders, MD Goldhaber, G Gonzalez, AH Hattori, T Hsiao, E Ihara, Y Kashikawa, N Koester, B Konishi, K Lidman, C Lubin, L Morokuma, T Oda, T Perlmutter, S Postman, M Ripoche, P Rosati, P Rubin, D Rykoff, E Spadafora, A Stanford, SA Suzuki, N Takanashi, N Tokita, K Yasuda, N AF Meyers, J. Aldering, G. Barbary, K. Barrientos, L. F. Brodwin, M. Dawson, K. S. Deustua, S. Doi, M. Eisenhardt, P. Faccioli, L. Fakhouri, H. K. Fruchter, A. S. Gilbank, D. G. Gladders, M. D. Goldhaber, G. Gonzalez, A. H. Hattori, T. Hsiao, E. Ihara, Y. Kashikawa, N. Koester, B. Konishi, K. Lidman, C. Lubin, L. Morokuma, T. Oda, T. Perlmutter, S. Postman, M. Ripoche, P. Rosati, P. Rubin, D. Rykoff, E. Spadafora, A. Stanford, S. A. Suzuki, N. Takanashi, N. Tokita, K. Yasuda, N. CA Supernova Cosmology Project TI THE HUBBLE SPACE TELESCOPE CLUSTER SUPERNOVA SURVEY. III. CORRELATED PROPERTIES OF TYPE Ia SUPERNOVAE AND THEIR HOSTS AT 0.9 < z < 1.46 SO ASTROPHYSICAL JOURNAL LA English DT Article DE cosmology: observations; dark energy; distance scale; galaxies: clusters: general; galaxies: elliptical and lenticular, cD; supernovae: general ID EARLY-TYPE GALAXIES; COLOR-MAGNITUDE RELATION; HIGH-REDSHIFT CLUSTERS; DIGITAL SKY SURVEY; SIMILAR-TO 1; INITIAL MASS FUNCTION; AMES ELLIPTIC GALAXIES; RECENT STAR-FORMATION; IRAC SHALLOW SURVEY; DISTANT CLUSTERS AB Using the sample of Type Ia supernovae (SNe Ia) discovered by the Hubble Space Telescope (HST) Cluster Supernova Survey and augmented with HST-observed SNe Ia in the Great Observatories Origins Deep Survey (GOODS) fields, we search for correlations between the properties of SNe and their host galaxies at high redshift. We use galaxy color and quantitative morphology to determine the red sequence in 25 clusters and develop a model to distinguish passively evolving early-type galaxies from star-forming galaxies in both clusters and the field. With this approach, we identify 6 SN Ia hosts that are early-type cluster members and 11 SN Ia hosts that are early-type field galaxies. We confirm for the first time at z > 0.9 that SNe Ia hosted by early-type galaxies brighten and fade more quickly than SNe Ia hosted by late-type galaxies. We also show that the two samples of hosts produce SNe Ia with similar color distributions. The relatively simple spectral energy distributions expected for passive galaxies enable us to measure stellar masses of early-type SN hosts. In combination with stellar mass estimates of late-type GOODS SN hosts from Thomson & Chary, we investigate the correlation of host mass with Hubble residual observed at lower redshifts. Although the sample is small and the uncertainties are large, a hint of this relation is found atz > 0.9. By simultaneously fitting the average cluster galaxy formation history and dust content to the red-sequence scatters, we show that the reddening of early-type cluster SN hosts is likely E(B - V) less than or similar to 0.06. The similarity of the field and cluster early-type host samples suggests that field early-type galaxies that lie on the red sequence may also be minimally affected by dust. Hence, the early-type-hosted SNe Ia studied here occupy a more favorable environment to use as well-characterized high-redshift standard candles than other SNe Ia. C1 [Meyers, J.; Barbary, K.; Fakhouri, H. K.; Goldhaber, G.; Perlmutter, S.; Rubin, D.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Meyers, J.; Aldering, G.; Barbary, K.; Faccioli, L.; Fakhouri, H. K.; Goldhaber, G.; Hsiao, E.; Perlmutter, S.; Ripoche, P.; Rubin, D.; Rykoff, E.; Spadafora, A.; Suzuki, N.] EO Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Barrientos, L. F.] Pontificia Univ Catolica Chile, Dept Astron, Santiago, Chile. [Brodwin, M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Dawson, K. S.] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA. [Deustua, S.; Fruchter, A. S.; Postman, M.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Doi, M.; Ihara, Y.; Morokuma, T.; Tokita, K.] Univ Tokyo, Grad Sch Sci, Inst Astron, Mitaka, Tokyo 1810015, Japan. [Eisenhardt, P.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Gilbank, D. G.] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada. [Gladders, M. D.; Koester, B.] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA. [Gonzalez, A. H.] Univ Florida, Dept Astron, Gainesville, FL 32611 USA. [Hattori, T.] Natl Inst Nat Sci, Natl Astron Observ Japan, Hilo, HI 96720 USA. [Kashikawa, N.; Morokuma, T.; Takanashi, N.] Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan. [Koester, B.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA. [Konishi, K.; Yasuda, N.] Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan. [Lidman, C.] Australian Astron Observ, Epping, NSW 1710, Australia. [Lubin, L.; Stanford, S. A.] Univ Calif Davis, Dept Phys, Davis, CA 95618 USA. [Oda, T.] Kyoto Univ, Dept Astron, Sakyo Ku, Kyoto 6068502, Japan. [Rosati, P.] ESO, D-85748 Garching, Germany. [Stanford, S. A.] Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA. RP Meyers, J (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. EM jmeyers314@berkeley.edu RI Perlmutter, Saul/I-3505-2015; OI Perlmutter, Saul/0000-0002-4436-4661; Meyers, Joshua/0000-0002-2308-4230 FU NASA from the Space Telescope Science Institute [GO-10496]; NASA [NAS 5-26555]; Office of Science, Office of High Energy and Nuclear Physics, of the U.S. Department of Energy [AC02-05CH11231]; JSPS [20040003] FX We thank a very helpful referee for suggestions that improved the quality of this paper. We also thank Pasquale Temi for comments on the infrared dust properties of nearby early-type galaxies. Financial support for this work was provided by NASA through program GO-10496 from the Space Telescope Science Institute, which is operated by AURA, Inc., under NASA contract NAS 5-26555. This work was also supported in part by the Director, Office of Science, Office of High Energy and Nuclear Physics, of the U.S. Department of Energy under Contract No. AC02-05CH11231, as well as a JSPS core-to-core program "International Research Network for Dark Energy" and by a JSPS research grant (20040003). The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. Finally, this work would not have been possible without the dedicated efforts of the daytime and nighttime support staff at the Cerro Paranal Observatory. NR 154 TC 18 Z9 18 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY PY 2012 VL 750 IS 1 AR 1 DI 10.1088/0004-637X/750/1/1 PG 23 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 929LB UT WOS:000303063500001 ER PT J AU Neilsen, J Remillard, RA Lee, JC AF Neilsen, Joseph Remillard, Ronald A. Lee, Julia C. TI RADIATION PRESSURE AND MASS EJECTION IN rho-LIKE STATES OF GRS 1915+105 SO ASTROPHYSICAL JOURNAL LA English DT Article DE accretion, accretion disks; black hole physics; instabilities; X-rays: binaries; X-rays: individual (GRS 1915+105) ID BLACK-HOLE CANDIDATE; X-RAY-BURSTS; ACCRETION DISK; COMPLEX BEHAVIOR; IGR J17091-3624; UNIFIED MODEL; GRS-1915+105; VARIABILITY; JET; INSTABILITY AB We present a unifying scenario to address the physical origin of the diversity of X-ray light curves within the rho variability class of the microquasar GRS 1915+105. This "heartbeat" state is characterized by a bright flare that recurs every similar to 50-100 s, but the profile and duration of the flares vary significantly from observation to observation. Based on a comprehensive, phase-resolved study of heartbeats in the Rossi X-ray Timing Explorer archive, we demonstrate that very different X-ray light curves do not require origins in different accretion processes. Indeed, our detailed comparison of the phase-resolved spectra of a double-peaked oscillation and a single-peaked oscillation shows that different cycles can have basically similar X-ray spectral evolution. We argue that all heartbeat oscillations can be understood as the result of a combination of a thermal-viscous radiation pressure instability, a local Eddington limit in the disk, and a sudden, radiation-pressure-driven evaporation or ejection event in the inner accretion disk. This ejection appears to be a universal, fundamental part of the rho state, and is largely responsible for a hard X-ray pulse seen in the light curve of all cycles. We suggest that the detailed shape of oscillations in the mass accretion rate through the disk is responsible for the phenomenological differences between different rho-type light curves, and we discuss how future time-dependent simulations of disk instabilities may provide new insights into the role of radiation pressure in the accretion flow. C1 [Neilsen, Joseph; Remillard, Ronald A.] MIT Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA. [Neilsen, Joseph; Lee, Julia C.] Harvard Univ, Dept Astron, Cambridge, MA 02138 USA. [Neilsen, Joseph; Lee, Julia C.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Neilsen, J (reprint author), MIT Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA. EM jneilsen@space.mit.edu OI Neilsen, Joseph/0000-0002-8247-786X FU Chandra [G07-8044X]; Harvard University Graduate School of Arts and Sciences; National Aeronautics and Space Administration through the Smithsonian Astrophysical Observatory [SV3-73016]; National Aeronautics Space Administration [NAS8-03060] FX We thank Diego Altamirano for provocative discussions of IGR 17091-3624 and GRS 1915+105. J.N. gratefully acknowledges funding support from Chandra grant G07-8044X and the Harvard University Graduate School of Arts and Sciences, as well as support from the National Aeronautics and Space Administration through the Smithsonian Astrophysical Observatory contract SV3-73016 to MIT for support of the Chandra X-ray Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics Space Administration under contract NAS8-03060. R.A.R. acknowledges partial support from the NASA contract to MIT for the support of RXTE instruments. This research has made use of data obtained from the High Energy Astrophysics Science Archive Research Center (HEASARC), provided by NASA's Goddard Space Flight Center. NR 47 TC 13 Z9 13 U1 1 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY PY 2012 VL 750 IS 1 AR 71 DI 10.1088/0004-637X/750/1/71 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 929LB UT WOS:000303063500071 ER PT J AU Perets, HB Kouwenhoven, MBN AF Perets, Hagai B. Kouwenhoven, M. B. N. TI ON THE ORIGIN OF PLANETS AT VERY WIDE ORBITS FROM THE RECAPTURE OF FREE FLOATING PLANETS SO ASTROPHYSICAL JOURNAL LA English DT Article DE binaries: general; planetary systems; planets and satellites: detection; planets and satellites: dynamical evolution and stability; planets and satellites: formation; stars: kinematics and dynamics ID SOLAR-TYPE STARS; UPPER SCORPIUS; BROWN DWARF; DYNAMICAL INTERACTIONS; STELLAR CLUSTERS; AGE DISTRIBUTION; MASS COMPANIONS; GIANT PLANETS; BINARY STARS; EVOLUTION AB In recent years, several planets have been discovered at wide orbits (>100 AU) around their host stars. Theoretical studies encounter difficulties in explaining their formation and origin. Here we propose a novel scenario for the production of planetary systems at such orbits, through the dynamical recapture of free floating planets (FFPs) in dispersing stellar clusters and stellar associations. This process is a natural extension of the recently suggested scenario for the formation of wide stellar binaries. We use N-body simulations of dispersing clusters with 10-1000 stars and comparable numbers of FFPs to study this process. We find that planets are captured into wide orbits in the typical range similar to few x 100-10(6) AU and have a wide range of eccentricities (thermal distribution). Typically, 3-6 x (f(FFP)/1)% of all stars capture a planetary companion with such properties (where f(FFP) is the number of FFP per star in the birth clusters). The planetary capture efficiency is comparable to that of capture-formed stellar binaries, and shows a similar dependence on the cluster size and structure. It is almost independent of the specific planetary mass; planets as well as substellar companions of any mass can be captured. The capture efficiency decreases with increasing cluster size, and for a given cluster size it increases with the host/primary mass. We also find that more than one planet can be captured around the same host through independent consecutive captures; similarly, planets can be captured into binary systems, both in circumstellar and circumbinary orbits. We also expect planets to be captured into pre-existing planetary (and protoplanetary systems) as well as into orbits around black holes and massive white dwarfs, if these formed early enough before the cluster dispersal. In particular, stellar black holes have a high capture efficiency (>50% and 5-10 x (f(FFP)/1)% for capture of stars and planetary companions, respectively) due to their large mass. Finally, although rare, two FFPs or brown dwarfs can become bound and form an FFP-binary system with no stellar host. C1 [Perets, Hagai B.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Kouwenhoven, M. B. N.] Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China. RP Perets, HB (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM hperets@physics.cfa.harvard.edu; thijskouwenhoven@gmail.com RI Kouwenhoven, M.B.N./G-3854-2015; Perets, Hagai/K-9605-2015 OI Kouwenhoven, M.B.N./0000-0002-1805-0570; Perets, Hagai/0000-0002-5004-199X FU Peter and Patricia Gruber Foundation through the IAU-PPGF; Peking University [985]; National Natural Science Foundation of China [11010237, 11050110414, 11173004] FX H.B.P. is a CfA and BIKURA (FIRST) fellow. M.B.N.K. was supported by the Peter and Patricia Gruber Foundation through the IAU-PPGF fellowship, by the Peking University One Hundred Talent Fund (985), and by the National Natural Science Foundation of China (grants 11010237, 11050110414, 11173004). The authors thank Michael Ireland, Nathan Kaib, Sally Dodson-Robinson, and the anonymous referee for helpful comments that helped improve this manuscript. NR 45 TC 28 Z9 28 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY PY 2012 VL 750 IS 1 AR 83 DI 10.1088/0004-637X/750/1/83 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 929LB UT WOS:000303063500083 ER PT J AU Savcheva, A Pariat, E van Ballegooijen, A Aulanier, G DeLuca, E AF Savcheva, A. Pariat, E. van Ballegooijen, A. Aulanier, G. DeLuca, E. TI SIGMOIDAL ACTIVE REGION ON THE SUN: COMPARISON OF A MAGNETOHYDRODYNAMICAL SIMULATION AND A NONLINEAR FORCE-FREE FIELD MODEL SO ASTROPHYSICAL JOURNAL LA English DT Article DE Sun: corona; Sun: flares; Sun: magnetic topology ID QUASI-SEPARATRIX LAYERS; CORONAL MASS EJECTIONS; MAGNETIC-FLUX ROPES; CURRENT-SHEET FORMATION; GLOBAL SOLAR CORONA; PHOTOSPHERIC MOTIONS; HEMISPHERIC PATTERN; KINK INSTABILITY; NULL POINTS; FILAMENT AB In this paper we show that when accurate nonlinear force-free field (NLFFF) models are analyzed together with high-resolution magnetohydrodynamic (MHD) simulations, we can determine the physical causes for the coronal mass ejection (CME) eruption on 2007 February 12. We compare the geometrical and topological properties of the three-dimensional magnetic fields given by both methods in their pre-eruptive phases. We arrive at a consistent picture for the evolution and eruption of the sigmoid. Both the MHD simulation and the observed magnetic field evolution show that flux cancellation plays an important role in building the flux rope. We compute the squashing factor, Q, in different horizontal maps in the domains. The main shape of the quasi-separatrix layers (QSLs) is very similar between the NLFFF and MHD models. The main QSLs lie on the edge of the flux rope. While the QSLs in the NLFFF model are more complex due to the intrinsic large complexity in the field, the QSLs in the MHD model are smooth and possess lower maximum value of Q. In addition, we demonstrate the existence of hyperbolic flux tubes (HFTs) in both models in vertical cross sections of Q. The main HFT, located under the twisted flux rope in both models, is identified as the most probable site for reconnection. We also show that there are electric current concentrations coinciding with the main QSLs. Finally, we perform torus instability analysis and show that a combination between reconnection at the HFT and the resulting expansion of the flux rope into the torus instability domain is the cause of the CME in both models. C1 [Savcheva, A.; van Ballegooijen, A.; DeLuca, E.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Savcheva, A.] Boston Univ, Dept Astron, Boston, MA 02215 USA. [Pariat, E.; Aulanier, G.] Univ Paris Diderot, UPMC, CNRS, Observ Paris,LESIA, F-92190 Meudon, France. RP Savcheva, A (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM savcheva@bu.edu RI DeLuca, Edward/L-7534-2013; OI DeLuca, Edward/0000-0001-7416-2895; van Ballegooijen, Adriaan/0000-0002-5622-3540 FU NASA [NNM07AB07C] FX Hinode is a Japanese mission developed, launched, and operated by ISAS/JAXA in partnership with NAOJ, NASA, and STFC (UK). Additional operational support is provided by ESA, NSC (Norway). This work was supported by NASA contract NNM07AB07C to SAO. The QSL computations have been performed on the multi-processors TRU64 computer of the LESIA. NR 93 TC 64 Z9 64 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD MAY PY 2012 VL 750 IS 1 AR 15 DI 10.1088/0004-637X/750/1/15 PG 20 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 929LB UT WOS:000303063500015 ER PT J AU Warren, BH Bermingham, E Bourgeois, Y Estep, LK Prys-Jones, RP Strasberg, D Thebaud, C AF Warren, Ben H. Bermingham, Eldredge Bourgeois, Yann Estep, Laura K. Prys-Jones, Robert P. Strasberg, Dominique Thebaud, Christophe TI HYBRIDIZATION AND BARRIERS TO GENE FLOW IN AN ISLAND BIRD RADIATION SO EVOLUTION LA English DT Article DE Darwin's finches; Foudia; hybridization; incomplete lineage sorting; Indian Ocean islands; introgression; Madagascar; reproductive isolation; secondary contact; speciation ID WESTERN INDIAN-OCEAN; DIVERGENCE POPULATION-GENETICS; DARWINS FINCHES; POSTZYGOTIC ISOLATION; COMORES ARCHIPELAGO; HYBRID INVIABILITY; SEXUAL ISOLATION; EVOLUTION; SPECIATION; PATTERNS AB While reinforcement may play a role in all major modes of speciation, relatively little is known about the timescale over which species hybridize without evolving complete reproductive isolation. Birds have high potential for hybridization, and islands provide simple settings for uncovering speciation and hybridization patterns. Here we develop a phylogenetic hypothesis for a phenotypically diverse radiation of finch-like weaver-birds (Foudia) endemic to the western Indian Ocean islands. We find that unlike Darwin's finches, each island-endemic Foudia population is a monophyletic entity for which speciation can be considered complete. In explaining the only exceptionsmismatches between taxonomy, mitochondrial, and nuclear dataphylogenetic and coalescent methods support introgressive hybridization rather than incomplete lineage sorting. Human introductions of known timing of one island-endemic species, to all surrounding archipelagos provide two fortuitous experiments; (1) population sampling at known times in recent evolutionary history, (2) bringing allopatric lineages of an island radiation into secondary contact. Our results put a minimum time bound on introgression (235 years), and support hybridization between species in natural close contact (parapatry), but not between those in natural allopatry brought into contact by human introduction. Time in allopatry, rather than in sympatry, appears key in the reproductive isolation of Foudia species. C1 [Warren, Ben H.] Univ E Anglia, Sch Biol Sci, Norwich NR4 7TJ, Norfolk, England. [Warren, Ben H.; Strasberg, Dominique] Univ La Reunion CIRAD, UMR PVBMT, St Pierre 97410, Reunion. [Warren, Ben H.; Bermingham, Eldredge] Smithsonian Trop Res Inst, Unit 9100, DPO, AA 34002 USA. [Warren, Ben H.; Prys-Jones, Robert P.] Nat Hist Museum, Dept Zool, Bird Grp, Tring HP23 6AP, Herts, England. [Bourgeois, Yann; Thebaud, Christophe] Univ Toulouse 3, Lab Evolut & Diversite Biol, CNRS, UMR 5174, F-31062 Toulouse 9, France. [Estep, Laura K.] Oregon State Univ, Dept Bot & Plant Pathol, Corvallis, OR 97331 USA. RP Warren, BH (reprint author), Univ E Anglia, Sch Biol Sci, Norwich NR4 7TJ, Norfolk, England. EM ben.warren@cirad.fr RI Thebaud, Christophe/N-3916-2016; OI Thebaud, Christophe/0000-0002-8586-1234; Strasberg, Dominique/0000-0003-3012-252X FU CNDRS; CNDRS d'Anjouan; Conservation de la Biodiversite Moheli; DAF-SEF; MEF Madagascar; MHN La Reunion; MICET; MNPCS; MWF; Nature Seychelles; SBS; SDOE; SEOR; SIF; Biotechnology and Biological Sciences Research Council; Biotas [ANR-2006-BDIV002]; Copenhagen Biosystematics Centre; Entente Cordiale; The Natural History Museum; Pamela Salter Fund; Smithsonian Molecular Systematics and Evolution Program; Laboratoire d'Excellence" TULIP [ANR-10-LABX41] FX We thank M. Gonzalez for help in the laboratory, O. Sanjur for advice, and all those who loaned samples (see File S1). We further thank Lynx Edicions for allowing us to reproduce T. Worfolk'sFoudia paintings and T. Worfolk for painting two additional taxa especially for this publication. This study would not have been possible without the support of the following organizations: CNDRS, CNDRS d'Anjouan, Conservation de la Biodiversite Moheli, DAF-SEF, MEF Madagascar, MHN La Reunion, MICET, MNPCS, MWF, Nature Seychelles, SBS, SDOE, SEOR, and SIF. We are very grateful to B. Abderemane, B. Andriamihaja, J. Cousin, N. Jivan Shah, C. Jones, M. Le Corre, Y. Mungroo, J. Nevill, B. Paris, and A. Sidi for their support, and to S. Anli, T. Ghestemme, C. Moussa Iboura, R. Nichols, S. Rasamison, F. Ratrimomanarivo and I. Said for help in the field. This work was funded by Biotechnology and Biological Sciences Research Council, Biotas ANR-2006-BDIV002, Copenhagen Biosystematics Centre, Entente Cordiale, The Natural History Museum, Pamela Salter Fund, Smithsonian Molecular Systematics and Evolution Program, and the Laboratoire d'Excellence" TULIP (ANR-10-LABX41). Sequences have been deposited in Genbank (Accession numbers: JN411136-JN411259). NR 66 TC 15 Z9 15 U1 2 U2 46 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0014-3820 J9 EVOLUTION JI Evolution PD MAY PY 2012 VL 66 IS 5 BP 1490 EP 1505 DI 10.1111/j.1558-5646.2011.01550.x PG 16 WC Ecology; Evolutionary Biology; Genetics & Heredity SC Environmental Sciences & Ecology; Evolutionary Biology; Genetics & Heredity GA 929FS UT WOS:000303047300015 PM 22519786 ER PT J AU Karmacharya, B Hostetler, JA Conner, LM Morris, G Oli, MK AF Karmacharya, Binab Hostetler, Jeffrey A. Conner, L. Mike Morris, Gail Oli, Madan K. TI Longleaf pine management practices and their impact on small mammal populations SO FOREST ECOLOGY AND MANAGEMENT LA English DT Article DE Capture-mark-recapture (CMR) methods; Longleaf pine management; Herbicide application; Herbicide-fire combination; Prescribed fire; Survival rate ID HISPID COTTON RAT; PRESCRIBED FIRE; PEROMYSCUS-GOSSYPINUS; HABITAT; FLORIDA; SOUTH; MICE; RESTORATION; ECOSYSTEM; SURVIVAL AB Rapid decline and degradation of longleaf pine ecosystems in the southeastern United States are conservation concerns. Prescribed fire is the primary management activity in this fire-dependent ecosystem, but prescribed fire is under increasing scrutiny, primarily due to air quality issues. There are concerns that prescribed fire may be removed, or replaced by herbicide, as a forest management tool without adequate understanding of the ecological consequences associated with such a change in management. We conducted a capture-mark-recapture study from April 1999 to April 2002 to examine experimentally the effect of prescribed fire, herbicide application and herbicide-prescribed fire combination on apparent survival rates of cotton mouse (Peromyscus gossypinus) and cotton rat (Sigmodon hispidus) populations. There was no evidence that herbicide application affected survival of cotton mice. Evidence to support effects of prescribed fire and herbicide-fire combination on survival of cotton mice was weak, although apparent monthly survival generally increased after these treatments. There was strong evidence that prescribed fire and herbicide-fire treatments affected survival of cotton rats, but the evidence for the effect of herbicide alone on survival was weak; survival rates declined in response to all three treatments but most strongly in response to the prescribed fire treatment. Fire alone had a stronger effect than an herbicide-fire treatment in both species. Without clear understanding of their ecological impacts, alternatives to prescribed fire should be employed with caution. (C) 2012 Elsevier B.V. All rights reserved. C1 [Conner, L. Mike; Morris, Gail] Joseph W Jones Ecol Res Ctr, Newton, GA 39870 USA. [Hostetler, Jeffrey A.] Smithsonian Conservat Biol Inst, Migratory Bird Ctr, Washington, DC 20013 USA. [Karmacharya, Binab; Oli, Madan K.] Univ Florida, Dept Wildlife Ecol & Conservat, Gainesville, FL 32611 USA. RP Conner, LM (reprint author), Joseph W Jones Ecol Res Ctr, 3988 Jones Ctr Dr Newton, Newton, GA 39870 USA. EM binabk@ufl.edu; hostetle@ufl.edu; mconner@jonesctr.org; gmorris@jonesctr.org; olim@ufl.edu RI Hostetler, Jeffrey/A-3345-2011 OI Hostetler, Jeffrey/0000-0003-3669-1758 FU Jones Ecological Research Center; Department of Wildlife Ecology and Conservation, University of Florida; United States Foreign Fulbright Program Division FX We thank all the field technicians who were involved in the fieldwork during the period of this study. Our warmest thanks are extended to M. Simmons who worked hard for the management of our database. Fieldwork was funded by Jones Ecological Research Center, and the graduate program for Binab Karmacharya was supported by the Department of Wildlife Ecology and Conservation, University of Florida and United States Foreign Fulbright Program Division. NR 41 TC 2 Z9 2 U1 6 U2 42 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-1127 J9 FOREST ECOL MANAG JI For. Ecol. Manage. PD MAY 1 PY 2012 VL 271 BP 140 EP 146 DI 10.1016/j.foreco.2012.01.031 PG 7 WC Forestry SC Forestry GA 928ZE UT WOS:000303030200017 ER PT J AU Liu, HP Hershler, R Marn, J Worsfold, TM AF Liu, H. -P. Hershler, R. Marn, J. Worsfold, T. M. TI Microsatellite evidence for tetraploidy in invasive populations of the New Zealand mudsnail, Potamopyrgus antipodarum (Gray, 1843) SO JOURNAL OF MOLLUSCAN STUDIES LA English DT Editorial Material ID FRESH-WATER SNAIL; PROSOBRANCHIA; DINUCLEOTIDE; HYDROBIIDAE; MECHANISMS; PLANTS C1 [Hershler, R.] Smithsonian Inst, Dept Invertebrate Zool, Washington, DC 20013 USA. [Liu, H. -P.; Marn, J.] Metropolitan State Coll, Dept Biol, Denver, CO 80217 USA. [Worsfold, T. M.] Unicomarine, Diamond Ctr 7, Letchworth SG6 1LW, Herts, England. RP Hershler, R (reprint author), Smithsonian Inst, Dept Invertebrate Zool, POB 37012,NHB W 305,MRC 163, Washington, DC 20013 USA. EM hershlerr@si.edu NR 28 TC 4 Z9 4 U1 1 U2 12 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0260-1230 J9 J MOLLUS STUD JI J. Molluscan Stud. PD MAY PY 2012 VL 78 BP 227 EP 230 DI 10.1093/mollus/eyr055 PN 2 PG 4 WC Marine & Freshwater Biology; Zoology SC Marine & Freshwater Biology; Zoology GA 932ZY UT WOS:000303330200011 ER PT J AU Loss, SR Niemi, GJ Blair, RB AF Loss, Scott R. Niemi, Gerald J. Blair, Robert B. TI Invasions of non-native earthworms related to population declines of ground-nesting songbirds across a regional extent in northern hardwood forests of North America SO LANDSCAPE ECOLOGY LA English DT Article DE Hermit Thrush; Invasive earthworms; Lumbricus; Minnesota, USA; Ovenbird; Wisconsin, USA ID HABITAT FRAGMENTATION; INFECTIOUS-DISEASE; BIRD POPULATIONS; PAIRING SUCCESS; BOREAL FORESTS; MANAGED FOREST; UNITED-STATES; OVENBIRD; LANDSCAPES; MINNESOTA AB Non-native invasive earthworms (Lumbricus spp.) substantially change previously earthworm-free hardwood forests of North America by consuming the leaf litter layer, reducing cover and richness of herbaceous plants, and increasing dominance of sedges and grasses. These changes have been associated with reduced density of Ovenbirds (Seiurus aurocapilla) and Hermit Thrushes (Catharus guttatus) in 10-20 ha forest stands, and with reduced Ovenbird nesting success. Whether earthworms reduce songbird populations across a regional extent is unclear. We investigated relationships among Lumbricus, vegetation structure, landscape patterns of forest cover, and density of four ground-nesting songbird species at points scattered across the Chequamegon-Nicolet (Wisconsin) and Chippewa (Minnesota) National Forests, USA. In both national forests, Ovenbird density was significantly lower at invaded points than Lumbricus-free points, but only in sugar maple (Acer saccharum) and sugar maple/basswood (Tilia americana) (hereafter, maple-basswood) woodlands. Density of the Hermit Thrush, Black-and-white Warbler (Mniotilta varia), and Veery (Catharus fuscescens) did not differ in relation to Lumbricus. In maple-basswood forests, Lumbricus biomass was the best predictor of Ovenbird density, with greater biomass associated with reduced density. Vegetation structure and landscape pattern variables received weak support as density predictors. Across all forest types, Ovenbird density was most strongly related to forest cover within 500 and 1,000 m radii. Our results suggest that earthworm invasions may pose a regional threat to Ovenbirds within maple-basswood forests of the U.S. northern Midwest. C1 [Loss, Scott R.] Smithsonian Migratory Bird Ctr, Washington, DC 20013 USA. [Loss, Scott R.] Univ Minnesota, Conservat Biol Grad Program, St Paul, MN 55108 USA. [Niemi, Gerald J.] Univ Minnesota, Nat Resources Res Inst, Dept Biol, Duluth, MN 55812 USA. [Blair, Robert B.] Univ Minnesota, Dept Fisheries Wildlife & Conservat Biol, St Paul, MN 55108 USA. RP Loss, SR (reprint author), Smithsonian Migratory Bird Ctr, Natl Zool Pk,Box 37012,MRC 5503, Washington, DC 20013 USA. EM LossS@si.edu RI Loss, Scott/B-1504-2014; OI Blair, Robert/0000-0001-5321-6452 FU American Museum of Natural History; Bell Museum of Natural History; Dayton-Wilkie Foundation; Explorers Club; Minnesota Ornithologists' Union; U.S. Department of Agriculture (Chequamegon-Nicolet National Forest); Wisconsin Society for Ornithology; University of Minnesota; National Science Foundation [NSF-DGE-0653827] FX Research was funded by the American Museum of Natural History, Bell Museum of Natural History, Dayton-Wilkie Foundation, The Explorers Club, Minnesota Ornithologists' Union, U.S. Department of Agriculture (Chequamegon-Nicolet National Forest), and Wisconsin Society for Ornithology. S.R.L. was supported by a University of Minnesota Graduate School Fellowship and National Science Foundation Interdisciplinary Graduate Education and Research Traineeship: Risk Analysis for Introduced Species/Genotypes (NSF-DGE-0653827). We thank C. Hakseth, L. Raab, and K. Bennett for earthworm sampling assistance, J. Bednar, P. Dolan-Linne, A. Bracey, J. Bailley, C. Lapin, D. Ostrowski, H. Seeland, and J. Smith for conducting bird surveys, and A. Grinde for compiling vegetation and bird data. We thank L.E. Frelich, D.E. Andersen, P. Bolstad, A. Holdsworth, and C. Hale for guiding the study's development. Work was conducted with appropriate permits and approval by the University of Minnesota Institutional Animal Care and Use Committee. NR 63 TC 17 Z9 17 U1 3 U2 53 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0921-2973 J9 LANDSCAPE ECOL JI Landsc. Ecol. PD MAY PY 2012 VL 27 IS 5 BP 683 EP 696 DI 10.1007/s10980-012-9717-4 PG 14 WC Ecology; Geography, Physical; Geosciences, Multidisciplinary SC Environmental Sciences & Ecology; Physical Geography; Geology GA 929JC UT WOS:000303056100006 ER PT J AU Gomes, ACS Luizao, FJ AF Gomes, Ana C. S. Luizao, Flavio J. TI Leaf and Soil Nutrients in a Chronosequence of Second-Growth Forest in Central Amazonia: Implications for Restoration of Abandoned Lands SO RESTORATION ECOLOGY LA English DT Article DE Bellucia dichotoma; Cecropia sciadophylla; natural regeneration; nutrient dynamics; nutrient resorption efficiency; Vismia cayennensis ID LITTER DECOMPOSITION; SECONDARY FORESTS; TROPICAL FORESTS; EASTERN AMAZONIA; USE EFFICIENCY; RAIN-FOREST; CARBON; NITROGEN; RESORPTION; REGENERATION AB Subsistence agriculture, cattle ranching, and periodical land abandonment are common land-use practices in Amazonia. Because changes in land use affect biogeochemical cycles, secondary forests growing after land abandonment develop at varying speeds and spatial patterns, due in part to varying nutrient dynamics. Leaf and soil nutrient concentrations can provide useful information on nutrient cycling processes and strategies of nutrient use by trees that are suitable for introduction to abandoned areas. To understand nutrient dynamics in secondary forests from different regeneration stages, as well as the importance of pioneer species in the regeneration process, we measured the concentration of macronutrients in leaves of three pioneer tree species (Vismia cayennensis, Cecropia sciadophylla, and Bellucia dichotoma) in central Amazon secondary forests. We also measured macronutrients in the topsoil under the trees. We found that type of prior land use, time since abandonment, and number of fire events were significantly correlated with the concentrations of leaf and soil macronutrients, explaining between 10 and 38% of the variation in macronutrient concentrations. The observed patterns suggest that management practices affect the processes involved in N cycling and availability. Of the three pioneer species, C. sciadophylla showed the highest nutrient resorption efficiency and the highest leaf nutritional quality. We suggest that these two features determine a higher potential of C. sciadophylla for natural regeneration and restoration of abandoned lands. C1 [Gomes, Ana C. S.; Luizao, Flavio J.] INPA, Dept Ecol CPEC, BR-69011970 Manaus, Amazonas, Brazil. [Gomes, Ana C. S.] INPA, Biol Dynam Forest Fragments Project, BR-69011970 Manaus, Amazonas, Brazil. [Gomes, Ana C. S.] Smithsonian Trop Res Inst, BR-69011970 Manaus, Amazonas, Brazil. RP Gomes, ACS (reprint author), INPA, Dept Ecol CPEC, CP 478, BR-69011970 Manaus, Amazonas, Brazil. EM anacarlag@gmail.com FU CNPq/Banco Mundial; Brazilian LTER; CAPES FX We thank Tania Pimentel and the staff of LTSP/INPA for facilitating laboratory analysis; Rubenildo Lima (LBA Program) and the Biological Dynamics of Forest Fragments Project (BDFFP) for assistance with field logistics; Natan and Osmar for assistance with field work; E.A. Davidson, A. Vicentini, and G. Ferraz for comments on early versions of the manuscript; R. J. Burnham for reviewing the English. Research was funded by the PPG-7 (CNPq/Banco Mundial), the Brazilian LTER Program, and a grant from CAPES to A.C.S. Gomes. This is publication number 568 in the BDFFP technical series. NR 38 TC 4 Z9 4 U1 3 U2 46 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1061-2971 EI 1526-100X J9 RESTOR ECOL JI Restor. Ecol. PD MAY PY 2012 VL 20 IS 3 BP 339 EP 345 DI 10.1111/j.1526-100X.2011.00773.x PG 7 WC Ecology SC Environmental Sciences & Ecology GA 929JB UT WOS:000303056000009 ER PT J AU Eberhard, WG Wcislo, WT AF Eberhard, William G. Wcislo, William T. TI Plenty of Room at the Bottom? Tiny animals solve problems of housing and maintaining oversized brains, shedding new light on nervous-system evolution SO AMERICAN SCIENTIST LA English DT Article ID MINIATURIZATION; SIZE; CONSEQUENCES; COLEOPTERA; PTILIIDAE; ALLOMETRY; INSECTS; SPIDERS C1 [Eberhard, William G.; Wcislo, William T.] Smithsonian Trop Res Inst, Balboa, Panama. RP Eberhard, WG (reprint author), Smithsonian Trop Res Inst, Apartado 0843, Balboa, Panama. EM william.eberhard@gmail.com NR 8 TC 7 Z9 7 U1 1 U2 15 PU SIGMA XI-SCI RES SOC PI RES TRIANGLE PK PA PO BOX 13975, RES TRIANGLE PK, NC 27709 USA SN 0003-0996 J9 AM SCI JI Am. Scientist PD MAY-JUN PY 2012 VL 100 IS 3 BP 226 EP 233 PG 8 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 926MH UT WOS:000302834600019 ER PT J AU Blondin, S Matheson, T Kirshner, RP Mandel, KS Berlind, P Calkins, M Challis, P Garnavich, PM Jha, SW Modjaz, M Riess, AG Schmidt, P AF Blondin, S. Matheson, T. Kirshner, R. P. Mandel, K. S. Berlind, P. Calkins, M. Challis, P. Garnavich, P. M. Jha, S. W. Modjaz, M. Riess, A. G. Schmidt, P. TI THE SPECTROSCOPIC DIVERSITY OF TYPE Ia SUPERNOVAE SO ASTRONOMICAL JOURNAL LA English DT Article DE supernovae: general; surveys ID HIGH-VELOCITY FEATURES; BVRI LIGHT CURVES; NEAR-INFRARED OBSERVATIONS; DELAYED-DETONATION MODELS; FAILED DEFLAGRATION MODEL; PHOTOMETRY DATA RELEASE; LOW-LUMINOSITY HOST; LATE-TIME SPECTRA; WHITE-DWARF STAR; OPTICAL SPECTROSCOPY AB We present 2603 spectra of 462 nearby Type Ia supernovae (SNe Ia), including 2065 previously unpublished spectra, obtained during 1993-2008 through the Center for Astrophysics Supernova Program. There are on average eight spectra for each of the 313 SNe Ia with at least two spectra. Most of the spectra were obtained with the FAST spectrograph at the Fred Lawrence Whipple Observatory 1.5 m telescope and reduced in a consistent manner, making this data set well suited for studies of SN Ia spectroscopic diversity. Using additional data from the literature, we study the spectroscopic and photometric properties of SNe Ia as a function of spectroscopic class using the classification schemes of Branch et al. and Wang et al. The width-luminosity relation appears to be steeper for SNe Ia with broader lines, although the result is not statistically significant with the present sample. Based on the evolution of the characteristic Si II lambda 6355 line, we propose improved methods for measuring velocity gradients, revealing a larger range than previously suspected, from similar to 0 to similar to 400 km s(-1) day(-1) considering the instantaneous velocity decline rate at maximum light. We find a weaker and less significant correlation between Si II velocity and intrinsic B-V color at maximum light than reported by Foley et al., owing to a more comprehensive treatment of uncertainties and host galaxy dust. We study the extent of nuclear burning and the presence of unburnt carbon in the outermost layers of the ejecta and report new detections of C II lambda 6580 in 23 early-time SN Ia spectra. The frequency of C II detections is not higher in SNe Ia with bluer colors or narrower light curves, in conflict with the recent results of Thomas et al. Based on nebular spectra of 27 SNe Ia, we find no relation between the FWHM of the iron emission feature at similar to 4700 angstrom and Delta m(15)(B) after removing the two low-luminosity SN 1986G and SN 1991bg, suggesting that the peak luminosity is not strongly dependent on the kinetic energy of the explosion for most SNe Ia. Finally, we confirm the correlation of velocity shifts in some nebular lines with the intrinsic B-V color of SNe Ia at maximum light, although several outliers suggest a possible non-monotonic behavior for the largest blueshifts. C1 [Blondin, S.] Aix Marseille Univ, Ctr Phys Particules Marseille, CNRS, IN2P3, F-13288 Marseille 9, France. [Matheson, T.] Natl Opt Astron Observ, Tucson, AZ 85719 USA. [Kirshner, R. P.; Mandel, K. S.; Challis, P.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Mandel, K. S.] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2AZ, England. [Berlind, P.; Calkins, M.] FL Whipple Observ, Amado, AZ 85645 USA. [Garnavich, P. M.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. [Jha, S. W.] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA. [Modjaz, M.] NYU, Ctr Cosmol & Particle Phys, New York, NY 10003 USA. [Riess, A. G.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. [Riess, A. G.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Schmidt, P.] Australian Natl Univ, Mt Stromlo & Siding Spring Observ, Res Sch Astron & Astrophys, Weston, ACT 2611, Australia. RP Blondin, S (reprint author), Aix Marseille Univ, Ctr Phys Particules Marseille, CNRS, IN2P3, 163 Ave Luminy, F-13288 Marseille 9, France. EM blondin@cppm.in2p3.fr OI Schmidt, Brian/0000-0001-6589-1287 FU NSF [AST 09-07903, AST-0847157] FX We thank the staffs of the F. L. Whipple, MMT, and Las Campanas observatories for their extensive assistance and support during this project, as well as everyone who assisted with observations (see Table A1). We acknowledge useful discussions with David Branch, Luc Dessart, Gaston Folatelli, Ryan Foley, Keiichi Maeda, and Xiaofeng Wang. Additional thanks to Mohan Ganeshalingam, Weidong Li, and Jeff Silverman from the Berkeley SN Group for sending us tmax(B) values for six SNe Ia; and to Stephen Bailey from the SNfactory collaboration for sending us the results of SALT2 fits to five SNe Ia; to Giuseppe Altavilla, Stefano Benetti, Seppo Mattila, Jesper Sollerman, and Max Stritzinger, for sending us spectroscopic data. Some of the non-CfA spectra used in this paper were downloaded from the SUSPECT archive. Support for supernova research at Harvard University, including the CfA Supernova Archive, is provided in part by NSF grant AST 09-07903. S.W.J. is supported at Rutgers University in part by NSF CAREER award AST-0847157. This research has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. NR 178 TC 99 Z9 99 U1 2 U2 7 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-6256 EI 1538-3881 J9 ASTRON J JI Astron. J. PD MAY PY 2012 VL 143 IS 5 AR 126 DI 10.1088/0004-6256/143/5/126 PG 33 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 928BI UT WOS:000302954200023 ER PT J AU Bonaca, A Juric, M Ivezic, Z Bizyaev, D Brewington, H Malanushenko, E Malanushenko, V Oravetz, D Pan, KK Shelden, A Simmons, A Snedden, S AF Bonaca, Ana Juric, Mario Ivezic, Zeljko Bizyaev, Dmitry Brewington, Howard Malanushenko, Elena Malanushenko, Viktor Oravetz, Daniel Pan, Kaike Shelden, Alaina Simmons, Audrey Snedden, Stephanie TI UPDATE ON THE NATURE OF VIRGO OVERDENSITY SO ASTRONOMICAL JOURNAL LA English DT Article DE Galaxy: formation; Galaxy: halo; Galaxy: structure ID DIGITAL SKY SURVEY; RR-LYRAE STARS; SURVEY COMMISSIONING DATA; MILKY-WAY TOMOGRAPHY; STELLAR STREAM; SDSS-III; HALO; M31; SAGITTARIUS; ANDROMEDA AB We use the Eighth Data Release of Sloan Digital Sky Survey catalog with its additional sky coverage of the southern Galactic hemisphere to measure the extent and to study the nature of the Virgo Overdensity (VOD). The data show that the VOD extends over no less than 2000 deg(2), with its true extent likely closer to 3000 deg(2). We test whether the VOD can be attributed to a tilt in the stellar halo ellipsoid with respect to the plane of the Galactic disk and find that the observed symmetry of the north-south Galactic hemisphere star counts excludes this possibility. We argue that the Virgo Overdensity, in spite of its wide area and cloud-like appearance, is still best explained by a minor merger. Its appearance and position are qualitatively similar to a near perigalacticon merger event and, assuming that the VOD and the Virgo Stellar Stream (VSS) share the same progenitor, consistent with the VSS orbit determined by Casetti-Dinescu et al. C1 [Bonaca, Ana] Yale Univ, Dept Astron, New Haven, CT 06511 USA. [Bonaca, Ana] Univ Zagreb, Fac Sci, Dept Phys, Zagreb 41000, Croatia. [Juric, Mario] Harvard Smithsonian Ctr Astrophys, Inst Theory & Computat, Cambridge, MA 02138 USA. [Ivezic, Zeljko] Univ Washington, Dept Astron, Seattle, WA 98195 USA. [Bizyaev, Dmitry; Brewington, Howard; Malanushenko, Elena; Malanushenko, Viktor; Oravetz, Daniel; Pan, Kaike; Shelden, Alaina; Simmons, Audrey; Snedden, Stephanie] Apache Point Observ, Sunspot, NM 88349 USA. RP Bonaca, A (reprint author), Yale Univ, Dept Astron, New Haven, CT 06511 USA. EM ana.bonaca@yale.edu; mjuric@cfa.harvard.edu FU NASA [HST-HF-51255.01-A, NAS 5-26555]; Space Telescope Science Institute; Alfred P. Sloan Foundation; National Science Foundation; US Department of Energy; University of Arizona; SDSS-III Collaboration; Brazilian Participation Group; Brookhaven National Laboratory; University of Cambridge; University of Florida; French Participation Group; German Participation Group; Instituto de Astrofisica de Canarias; Michigan State/Notre Dame/JINA Participation Group; Johns Hopkins University; Lawrence Berkeley National Laboratory; Max Planck Institute for Astrophysics; New Mexico State University; New York University; Ohio State University; Pennsylvania State University; University of Portsmouth; Princeton University; Spanish Participation Group; University of Tokyo; University of Utah; Vanderbilt University; University of Virginia; University of Washington; Yale University FX The authors wish to thank Marla Geha, Dana Casetti, and Nhung Ho for reading the early versions of the manuscript and providing thoughtful comments, and Branimir Sesar for help with accessing the SDSS data. M.J. gratefully acknowledges support by NASA through Hubble Fellowship grant HST-HF-51255.01-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS 5-26555.; Funding for SDSS-III has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, and the US Department of Energy. The SDSS-III Web site is http://www.sdss3.org/.; SDSS-III is managed by the Astrophysical Research Consortium for the Participating Institutions of the SDSS-III Collaboration including the University of Arizona, the Brazilian Participation Group, Brookhaven National Laboratory, University of Cambridge, University of Florida, the French Participation Group, the German Participation Group, the Instituto de Astrofisica de Canarias, the Michigan State/Notre Dame/JINA Participation Group, Johns Hopkins University, Lawrence Berkeley National Laboratory, Max Planck Institute for Astrophysics, New Mexico State University, New York University, Ohio State University, Pennsylvania State University, University of Portsmouth, Princeton University, the Spanish Participation Group, University of Tokyo, University of Utah, Vanderbilt University, University of Virginia, University of Washington, and Yale University. NR 41 TC 15 Z9 15 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-6256 J9 ASTRON J JI Astron. J. PD MAY PY 2012 VL 143 IS 5 AR 105 DI 10.1088/0004-6256/143/5/105 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 928BI UT WOS:000302954200002 ER PT J AU Boyer, ML Srinivasan, S van Loon, JT McDonald, I Meixner, M Zaritsky, D Gordon, KD Kemper, F Babler, B Block, M Bracker, S Engelbracht, CW Hora, J Indebetouw, R Meade, M Misselt, K Robitaille, T Sewillo, M Shiao, B Whitney, B AF Boyer, Martha L. Srinivasan, Sundar van Loon, Jacco Th. McDonald, Iain Meixner, Margaret Zaritsky, Dennis Gordon, Karl D. Kemper, F. Babler, Brian Block, Miwa Bracker, Steve Engelbracht, Charles W. Hora, Joe Indebetouw, Remy Meade, Marilyn Misselt, Karl Robitaille, Thomas Sewillo, Marta Shiao, Bernie Whitney, Barbara TI SURVEYING THE AGENTS OF GALAXY EVOLUTION IN THE TIDALLY STRIPPED, LOW-METALLICITY SMALL MAGELLANIC CLOUD (SAGE-SMC). II. COOL EVOLVED STARS (vol 142, pg 103, 2011) SO ASTRONOMICAL JOURNAL LA English DT Correction C1 [Boyer, Martha L.; Meixner, Margaret; Gordon, Karl D.; Shiao, Bernie] STScI, Baltimore, MD 21218 USA. [Srinivasan, Sundar] CNRS, Inst Astrophys Paris, UPR 341, F-75014 Paris, France. [van Loon, Jacco Th.] Keele Univ, Astrophys Grp, Lennard Jones Labs, Keele ST5 5BG, Staffs, England. [McDonald, Iain; Kemper, F.] Univ Manchester, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England. [Zaritsky, Dennis; Block, Miwa; Engelbracht, Charles W.; Misselt, Karl] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. [Kemper, F.] Acad Sinica, Inst Astron & Astrophys, Taipei 10617, Taiwan. [Babler, Brian; Bracker, Steve; Meade, Marilyn; Whitney, Barbara] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA. [Hora, Joe; Robitaille, Thomas] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Indebetouw, Remy] Univ Virginia, Dept Astron, Charlottesville, VA 22903 USA. [Sewillo, Marta] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. RP Boyer, ML (reprint author), STScI, 3700 San Martin Dr, Baltimore, MD 21218 USA. EM mboyer@stsci.edu RI Kemper, Francisca/D-8688-2011 OI Kemper, Francisca/0000-0003-2743-8240 NR 1 TC 0 Z9 0 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-6256 J9 ASTRON J JI Astron. J. PD MAY PY 2012 VL 143 IS 5 AR 127 DI 10.1088/0004-6256/143/5/127 PG 1 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 928BI UT WOS:000302954200024 ER PT J AU Foley, RJ Filippenko, AV Kessler, R Bassett, B Frieman, JA Garnavich, PM Jha, SW Konishi, K Lampeitl, H Riess, AG Sako, M Schneider, DP Sollerman, J Smith, M AF Foley, Ryan J. Filippenko, Alexei V. Kessler, Richard Bassett, Bruce Frieman, Joshua A. Garnavich, Peter M. Jha, Saurabh W. Konishi, Kohki Lampeitl, Hubert Riess, Adam G. Sako, Masao Schneider, Donald P. Sollerman, Jesper Smith, Mathew TI A MISMATCH IN THE ULTRAVIOLET SPECTRA BETWEEN LOW-REDSHIFT AND INTERMEDIATE-REDSHIFT TYPE Ia SUPERNOVAE AS A POSSIBLE SYSTEMATIC UNCERTAINTY FOR SUPERNOVA COSMOLOGY SO ASTRONOMICAL JOURNAL LA English DT Article DE cosmology: observations; distance scale; supernovae: general ID DIGITAL SKY SURVEY; HUBBLE-SPACE-TELESCOPE; BVRI LIGHT CURVES; PHOTOMETRY DATA RELEASE; DARK ENERGY; OPTICAL PHOTOMETRY; STANDARD STARS; HOST GALAXIES; LEGACY SURVEY; K-CORRECTIONS AB We present Keck high-quality rest-frame ultraviolet (UV) through optical spectra of 21 Type Ia supernovae (SNe Ia) in the redshift range 0.11 <= z <= 0.37 and a mean redshift of 0.22 that were discovered during the Sloan Digital Sky Survey-II (SDSS-II) SN Survey. Using the broadband photometry of the SDSS survey, we are able to reconstruct the SN host-galaxy spectral energy distributions (SEDs), allowing for a correction for the host-galaxy contamination in the SN Ia spectra. Comparison of composite spectra constructed from a subsample of 17 high-quality spectra to those created from a low-redshift sample with otherwise similar properties shows that the Keck/SDSS SNe Ia have, on average, extremely similar rest-frame optical spectra but show a UV flux excess. This observation is confirmed by comparing synthesized broadband colors of the individual spectra, showing a difference in mean colors at the 2.4 sigma-4.4 sigma level for various UV colors. We further see a slight difference in the UV spectral shape between SNe with low-mass and high-mass host galaxies. Additionally, we detect a relationship between the flux ratio at 2770 and 2900 angstrom and peak luminosity that differs from that observed at low redshift. We find that changing the UV SED of an SN Ia within the observed dispersion can change the inferred distance moduli by similar to 0.1 mag. This effect only occurs when the data probe the rest-frame UV. We suggest that this discrepancy could be due to differences in the host-galaxy population of the two SN samples or to small-sample statistics. C1 [Foley, Ryan J.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Foley, Ryan J.; Filippenko, Alexei V.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Kessler, Richard; Frieman, Joshua A.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA. [Kessler, Richard; Frieman, Joshua A.] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA. [Bassett, Bruce; Smith, Mathew] Univ Cape Town, Dept Math & Appl Math, ZA-7701 Rondebosch, South Africa. [Bassett, Bruce] S African Astron Observ, ZA-7935 Observatory, South Africa. [Bassett, Bruce] African Inst Math Sci, Cape Town, South Africa. [Frieman, Joshua A.] Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA. [Garnavich, Peter M.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. [Jha, Saurabh W.] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA. [Konishi, Kohki] Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan. [Lampeitl, Hubert] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 2EG, Hants, England. [Riess, Adam G.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. [Riess, Adam G.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Sako, Masao] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA. [Schneider, Donald P.] Penn State Univ, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA 16802 USA. [Schneider, Donald P.] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA. [Sollerman, Jesper] Stockholm Univ, Dept Astron, Oskar Klein Ctr, S-10691 Stockholm, Sweden. RP Foley, RJ (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM rfoley@cfa.harvard.edu OI Bassett, Bruce/0000-0001-7700-1069; Sollerman, Jesper/0000-0003-1546-6615 FU Clay Fellowship; W. M. Keck Foundation; NSF [AST-0443378, AST-0507475, AST-0607485, AST-0908886, AST-0847157]; U.S. Department of Energy (DOE) [DE-FG02-08ER41562]; NASA/HST from the Space Telescope Science Institute [GO-10182]; NASA [NAS5-26555]; Alfred P. Sloan Foundation; DOE; Japanese Monbukagakusho; Max Planck Society; Higher Education Funding Council for England; American Museum of Natural History; Astrophysical Institute Potsdam; University of Basel; University of Cambridge; Case Western Reserve University; University of Chicago; Drexel University; Fermilab; Institute for Advanced Study; Japan Participation Group; Johns Hopkins University; Joint Institute for Nuclear Astrophysics; Kavli Institute for Particle Astrophysics and Cosmology; Korean Scientist Group; Chinese Academy of Sciences (LAMOST); Los Alamos National Laboratory; Max-Planck-Institute for Astronomy (MPIA); Max-Planck-Institute for Astrophysics (MPA); New Mexico State University; Ohio State University; University of Pittsburgh; University of Portsmouth; Princeton University; United States Naval Observatory; University of Washington FX R.J.F. is supported by a Clay Fellowship.; The SDSS-II SN team supplied targets, photometry, and light-curve fits for this project; in particular, G. Miknaitis provided some of the necessary data and discussions. We thank J. M. Silverman for help with some of the observations, and R. Chornock for useful discussions and for performing additional spectral reductions of several objects. We are grateful to M. Blanton for discussions about the kcorrect software and J. Bloom for insightful comments on an early draft of this work. We thank the referee, M. Stritzinger, for helpful comments. The spectra of intermediate-redshift SNe in this study were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration (NASA); the Observatory was made possible by the generous financial support of the W. M. Keck Foundation. The spectra of low-redshift SNe in this study were obtained with the 3 m Shane telescope at Lick Observatory, which is owned and operated by the University of California. We thank the Keck and Lick staffs for their assistance with the observations.; A.V.F. is grateful for the hospitality of the Aspen Center for Physics, where this paper was finalized during the 2012 January program on "The Physics of Astronomical Transients." This research was made possible by NSF Grants AST-0443378, AST-0507475, AST-0607485, and AST-0908886, as well as by NSF CAREER award AST-0847157 to S.W.J. at Rutgers University. Additional support was provided by U.S. Department of Energy (DOE) Grant DE-FG02-08ER41562 and by the TABASGO Foundation. We also acknowledge funding from NASA/HST Grant GO-10182 from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA Contract NAS5-26555.; Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, NSF, DOE, NASA, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England. The SDSS Web Site is http://www.sdss.org/.; The SDSS is managed by the Astrophysical Research Consortium for the Participating Institutions. The Participating Institutions are the American Museum of Natural History, Astrophysical Institute Potsdam, University of Basel, University of Cambridge, Case Western Reserve University, University of Chicago, Drexel University, Fermilab, the Institute for Advanced Study, the Japan Participation Group, Johns Hopkins University, the Joint Institute for Nuclear Astrophysics, the Kavli Institute for Particle Astrophysics and Cosmology, the Korean Scientist Group, the Chinese Academy of Sciences (LAMOST), Los Alamos National Laboratory, the Max-Planck-Institute for Astronomy (MPIA), the Max-Planck-Institute for Astrophysics (MPA), New Mexico State University, Ohio State University, University of Pittsburgh, University of Portsmouth, Princeton University, the United States Naval Observatory, and the University of Washington. NR 92 TC 23 Z9 23 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-6256 J9 ASTRON J JI Astron. J. PD MAY PY 2012 VL 143 IS 5 AR 113 DI 10.1088/0004-6256/143/5/113 PG 25 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 928BI UT WOS:000302954200010 ER PT J AU Melbourne, J Soifer, BT Desai, V Pope, A Armus, L Dey, A Bussmann, RS Jannuzi, BT Alberts, S AF Melbourne, J. Soifer, B. T. Desai, Vandana Pope, Alexandra Armus, Lee Dey, Arjun Bussmann, R. S. Jannuzi, B. T. Alberts, Stacey TI THE SPECTRAL ENERGY DISTRIBUTIONS AND INFRARED LUMINOSITIES OF z approximate to 2 DUST-OBSCURED GALAXIES FROM Herschel AND Spitzer SO ASTRONOMICAL JOURNAL LA English DT Article DE galaxies: high-redshift; galaxies: starburst; infrared: galaxies; submillimeter: galaxies ID SUBMILLIMETER-SELECTED GALAXIES; SPACE-TELESCOPE MORPHOLOGIES; ACTIVE GALACTIC NUCLEUS; KECK ADAPTIVE OPTICS; ARRAY CAMERA IRAC; WIDE-FIELD SURVEY; MU-M OBSERVATIONS; STAR-FORMATION; HIGH-REDSHIFT; ULTRALUMINOUS GALAXIES AB Dust-obscured galaxies (DOGs) are a subset of high-redshift (z approximate to 2) optically-faint ultra-luminous infrared galaxies (ULIRGs, e. g., L-IR > 10(12) L-circle dot). We present new far-infrared photometry, at 250, 350, and 500 mu m(observed-frame), from the Herschel Space Telescope for a large sample of 113 DOGs with spectroscopically measured redshifts. Approximately 60% of the sample are detected in the far-IR. The Herschel photometry allows the first robust determinations of the total infrared luminosities of a large sample of DOGs, confirming their high IR luminosities, which range from 10(11.6) L-circle dot < L-IR(8-1000 mu m) < 10(13.6) L-circle dot. 90% of the Herschel-detected DOGs in this sample are ULIRGs and 30% have L-IR > 10(13) L-circle dot. The rest-frame near-IR (1-3 mu m) spectral energy distributions (SEDs) of the Herschel-detected DOGs are predictors of their SEDs at longer wavelengths. DOGs with "power-law" SEDs in the rest-frame near-IR show observed-frame 250/24 mu m flux density ratios similar to the QSO-like local ULIRG, Mrk 231. DOGs with a stellar "bump" in their rest-frame near-IR show observed-frame 250/24 mu m flux density ratios similar to local star-bursting ULIRGs like NGC 6240. None show 250/24 mu m flux density ratios similar to extreme local ULIRG, Arp 220; though three show 350/24 mu m flux density ratios similar to Arp 220. For the Herschel-detected DOGs, accurate estimates (within similar to 25%) of total IR luminosity can be predicted from their rest-frame mid-IR data alone (e. g., from Spitzer observed-frame 24 mu m luminosities). Herschel-detected DOGs tend to have a high ratio of infrared luminosity to rest-frame 8 mu m luminosity (the IR8 = L-IR(8-1000 mu m)/nu L-nu (8 mu m) parameter of Elbaz et al.). Instead of lying on the z = 1-2 "infrared main sequence" of star-forming galaxies (like typical LIRGs and ULIRGs at those epochs) the DOGs, especially large fractions of the bump sources, tend to lie in the starburst sequence. While, Herschel-detected DOGs are similar to scaled up versions of local ULIRGs in terms of 250/24 mu m flux density ratio, and IR8, they tend to have cooler far-IR dust temperatures (20-40K for DOGs versus 40-50K for local ULIRGs) as measured by the rest-frame 80/115 mu m flux density ratios (e. g., observed-frame 250/350 mu m ratios at z = 2). DOGs that are not detected by Herschel appear to have lower observed-frame 250/24 mu m ratios than the detected sample, either because of warmer dust temperatures, lower IR luminosities, or both. C1 [Melbourne, J.; Soifer, B. T.] CALTECH, Div Phys Math & Astron, Caltech Opt Observ, Pasadena, CA 91125 USA. [Soifer, B. T.; Desai, Vandana; Armus, Lee] CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA. [Pope, Alexandra; Alberts, Stacey] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA. [Dey, Arjun; Jannuzi, B. T.] Natl Opt Astron Observ, Tucson, AZ 85726 USA. [Bussmann, R. S.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Melbourne, J (reprint author), CALTECH, Div Phys Math & Astron, Caltech Opt Observ, Mail Stop 320-47, Pasadena, CA 91125 USA. EM jmel@caltech.edu; bts@submm.caltech.edu; vandesai@gmail.com; pope@astro.umass.edu; lee@ipac.caltech.edu; dey@noao.edu; rbussmann@cfa.harvard.edu; jannuzi@noao.edu; bts@ipac.caltech.edu FU NOAO; CSA (Canada); NAOC (China); CEA (France); CNES (France); CNRS (France); ASI (Italy); MCINN (Spain); SNSB (Sweden); STFC (UK); NASA (USA) FX This work is based (in part) on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. We acknowledge the MIPS GTO team for producing the Spitzer 24 mu m imaging and source catalogs of the Bootes field. SPIRE has been developed by a consortium of institutes led by Cardiff University (UK) and including Univ. Lethbridge (Canada); NAOC (China); CEA, LAM (France); IFSI, Univ. Padua (Italy); IAC (Spain); Stockholm Observatory (Sweden); Imperial College London, RAL, UCL-MSSL, UKATC, Univ. Sussex (UK); and Caltech, JPL, NHSC, Univ. Colorado (USA). This development has been supported by national funding agencies: CSA (Canada); NAOC (China); CEA, CNES, CNRS (France); ASI (Italy); MCINN (Spain); SNSB (Sweden); STFC (UK); and NASA (USA). We also acknowledge the HerMES collaboration for providing this excellent data set across the Bootes field. The US Herschel Science Center also provided a workshop on SPIRE image reduction and photometry that was very valuable for our understanding of the data. The research activities of A. D. and B.T.J. are supported by NOAO, which is operated by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation. NR 75 TC 29 Z9 29 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-6256 EI 1538-3881 J9 ASTRON J JI Astron. J. PD MAY PY 2012 VL 143 IS 5 AR 125 DI 10.1088/0004-6256/143/5/125 PG 22 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 928BI UT WOS:000302954200022 ER PT J AU Caputi, KI Dunlop, JS McLure, RJ Huang, JS Fazio, GG Ashby, MLN Castellano, M Fontana, A Cirasuolo, M Almaini, O Bell, EF Dickinson, M Donley, JL Faber, SM Ferguson, HC Giavalisco, M Grogin, NA Kocevski, DD Koekemoer, AM Koo, DC Lai, K Newman, JA Somerville, RS AF Caputi, K. I. Dunlop, J. S. McLure, R. J. Huang, J. -S. Fazio, G. G. Ashby, M. L. N. Castellano, M. Fontana, A. Cirasuolo, M. Almaini, O. Bell, E. F. Dickinson, M. Donley, J. L. Faber, S. M. Ferguson, H. C. Giavalisco, M. Grogin, N. A. Kocevski, D. D. Koekemoer, A. M. Koo, D. C. Lai, K. Newman, J. A. Somerville, R. S. TI THE NATURE OF EXTREMELY RED H - [4.5] > 4 GALAXIES REVEALED WITH SEDS AND CANDELS SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE galaxies: evolution; galaxies: high-redshift; infrared: galaxies ID EXTRAGALACTIC LEGACY SURVEY; SPITZER-SPACE-TELESCOPE; HIGH-REDSHIFT QUASARS; MASSIVE GALAXIES; SIGNIFICANT POPULATION; MIDINFRARED SELECTION; LUMINOSITY FUNCTION; STELLAR MASS; DEEP SURVEY; DUST AB We have analyzed a sample of 25 extremely red H - [4.5] > 4 galaxies, selected using 4.5 mu m data from the Spitzer SEDS survey and deep H-band data from the Hubble Space Telescope CANDELS survey, over similar to 180 arcmin(2) of the UKIDSS Ultra-Deep Survey field. Our aim is to investigate the nature of this rare population of mid-infrared (mid-IR) sources that display such extreme near-to-mid-IR colors. Using up to 17-band photometry (U through 8.0 mu m), we have studied in detail their spectral energy distributions, including possible degeneracies in the photometric redshift/internal extinction (z(phot)-A(V)) plane. Our sample appears to include sources of very different nature. Between 45% and 75% of them are dust-obscured, massive galaxies at 3 < z(phot) < 5. All of the 24 mu m detected sources in our sample are in this category. Two of these have S(24 mu m) > 300 mu Jy, which at 3 < z(phot) < 5 suggests that they probably host a dust-obscured active galactic nucleus. Our sample also contains four highly obscured (A(V) > 5) sources at z(phot) < 1. Finally, we analyze in detail two z(phot) similar to 6 galaxy candidates, and discuss their plausibility and implications. Overall, our red galaxy sample contains the tip of the iceberg of a larger population of z > 3 galaxies to be discovered with the future James Webb Space Telescope. C1 [Caputi, K. I.; Dunlop, J. S.; McLure, R. J.; Cirasuolo, M.] Univ Edinburgh, SUPA, Inst Astron, Royal Observ, Edinburgh EH9 3HJ, Midlothian, Scotland. [Huang, J. -S.; Fazio, G. G.; Ashby, M. L. N.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Castellano, M.; Fontana, A.] INAF Osservatorio Astron Roma, I-00040 Monte Porzio Catone, Italy. [Cirasuolo, M.] Royal Observ, Astron Technol Ctr, Edinburgh EH9 3HJ, Midlothian, Scotland. [Almaini, O.] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England. [Bell, E. F.] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA. [Dickinson, M.] Natl Opt Astron Observ, Tucson, AZ 85719 USA. [Donley, J. L.; Ferguson, H. C.; Grogin, N. A.; Koekemoer, A. M.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Faber, S. M.; Kocevski, D. D.; Koo, D. C.; Lai, K.] Univ Calif Santa Cruz, Univ Calif Observ, Lick Observ, Santa Cruz, CA 95064 USA. [Giavalisco, M.] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA. [Newman, J. A.] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA. [Newman, J. A.] Univ Pittsburgh, PITT PAC, Pittsburgh, PA 15260 USA. [Somerville, R. S.] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA. RP Caputi, KI (reprint author), Univ Groningen, Kapteyn Astron Inst, POB 800, NL-9700 AV Groningen, Netherlands. EM karina@astro.rug.nl OI Koekemoer, Anton/0000-0002-6610-2048; fontana, adriano/0000-0003-3820-2823; Bell, Eric/0000-0002-5564-9873 NR 38 TC 17 Z9 17 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD MAY 1 PY 2012 VL 750 IS 1 AR L20 DI 10.1088/2041-8205/750/1/L20 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 929CV UT WOS:000303039700020 ER PT J AU Chandra, P Chevalier, RA Irwin, CM Chugai, N Fransson, C Soderberg, AM AF Chandra, Poonam Chevalier, Roger A. Irwin, Christopher M. Chugai, Nikolai Fransson, Claes Soderberg, Alicia M. TI STRONG EVOLUTION OF X-RAY ABSORPTION IN THE TYPE IIn SUPERNOVA SN 2010jl SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE circumstellar matter; hydrodynamics; supernovae: general; supernovae: individual (SN 2010jl); X-rays: general ID EMISSION; SPECTRA; PLASMAS; LINES; DUST AB We report two epochs of Chandra-ACIS X-ray imaging spectroscopy of the nearby bright Type IIn supernova SN 2010jl, taken around two months and then a year after the explosion. The majority of the X-ray emission in both spectra is characterized by a high temperature (greater than or similar to 10 keV) and is likely to be from the forward shocked region resulting from circumstellar interaction. The absorption column density in the first spectrum is high (similar to 10(24) cm(-2)), more than three orders of magnitude higher than the Galactic absorption column, and we attribute it to absorption by circumstellar matter. In the second epoch observation, the column density has decreased by a factor of three, as expected for shock propagation in the circumstellar medium. The unabsorbed 0.2-10 keV luminosity at both epochs is similar to 7 x 10(41) erg s(-1). The 6.4 keV Fe line clearly present in the first spectrum is not detected in the second spectrum. The strength of the fluorescent line is roughly that expected for the column density of circumstellar gas, provided the Fe is not highly ionized. There is also evidence for an absorbed power-law component in both spectra, which we attribute to a background ultraluminous X-ray source. C1 [Chandra, Poonam] Royal Mil Coll Canada, Dept Phys, Kingston, ON K7K 7B4, Canada. [Chevalier, Roger A.; Irwin, Christopher M.] Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA. [Chugai, Nikolai] Russian Acad Sci, Inst Astron, Moscow 109017, Russia. [Fransson, Claes] Stockholm Univ, Dept Astron, SE-10691 Stockholm, Sweden. [Soderberg, Alicia M.] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. RP Chandra, P (reprint author), Royal Mil Coll Canada, Dept Phys, Kingston, ON K7K 7B4, Canada. EM Poonam.Chandra@rmc.ca FU NASA through Chandra X-ray Observatory Center [GO0-211080X, GO2-13082X, NAS8-03060] FX We are grateful to the referee for useful comments. Support for this work was provided by NASA through Chandra Awards GO0-211080X and GO2-13082X issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of NASA under contract NAS8-03060. NR 20 TC 22 Z9 22 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD MAY 1 PY 2012 VL 750 IS 1 AR L2 DI 10.1088/2041-8205/750/1/L2 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 929CV UT WOS:000303039700002 ER PT J AU Owers, MS Couch, WJ Nulsen, PEJ Randall, SW AF Owers, Matt S. Couch, Warrick J. Nulsen, Paul E. J. Randall, Scott W. TI SHOCKING TAILS IN THE MAJOR MERGER ABELL 2744 SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE galaxies: clusters: individual (Abell 2744); X-rays: galaxies: clusters ID GALAXY REDSHIFT SURVEY; ULTRA DEEP FIELD; STAR-FORMATION; RAM-PRESSURE; STARBURST GALAXIES; COMA CLUSTER; INTRACLUSTER MEDIUM; TADPOLE GALAXIES; MERGING CLUSTERS; SPIRAL GALAXIES AB We identify four rare "jellyfish" galaxies in Hubble Space Telescope imagery of the major merger cluster Abell 2744. These galaxies harbor trails of star-forming knots and filaments which have formed in situ in gas tails stripped from the parent galaxies, indicating they are in the process of being transformed by the environment. Further evidence for rapid transformation in these galaxies comes from their optical spectra, which reveal starburst, poststarburst, and active galactic nucleus features. Most intriguingly, three of the jellyfish galaxies lie near intracluster medium features associated with a merging "Bullet-like" subcluster and its shock front detected in Chandra X-ray images. We suggest that the high-pressure merger environment may be responsible for the star formation in the gaseous tails. This provides observational evidence for the rapid transformation of galaxies during the violent core passage phase of a major cluster merger. C1 [Owers, Matt S.; Couch, Warrick J.] Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia. [Owers, Matt S.] Australian Astron Observ, Epping, NSW 1710, Australia. [Nulsen, Paul E. J.; Randall, Scott W.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Owers, MS (reprint author), Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia. EM mowers@aao.gov.au OI Randall, Scott/0000-0002-3984-4337; Owers, Matt/0000-0002-2879-1663 FU Australian Research Council; NASA [NAS8-03060] FX We thank the referee, Curtis Struck, for his helpful comments. M.S.O. and W.J.C. acknowledge the financial support of the Australian Research Council. P.E.J.N. was partly supported by NASA grant NAS8-03060. NR 49 TC 30 Z9 30 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD MAY 1 PY 2012 VL 750 IS 1 AR L23 DI 10.1088/2041-8205/750/1/L23 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 929CV UT WOS:000303039700023 ER PT J AU Testa, P Reale, F AF Testa, Paola Reale, Fabio TI HINODE/EIS SPECTROSCOPIC VALIDATION OF VERY HOT PLASMA IMAGED WITH THE SOLAR DYNAMICS OBSERVATORY IN NON-FLARING ACTIVE REGION CORES SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE Sun: activity; Sun: corona; Sun: UV radiation; Sun: X-rays, gamma rays; techniques: imaging spectroscopy ID ULTRAVIOLET IMAGING SPECTROMETER; EMISSION-LINES; RAY TELESCOPE; FUNDAMENTAL LIMITATIONS; TEMPERATURE STRUCTURE; LOOPS OBSERVATIONS; DENSITY STRUCTURE; ATOMIC DATABASE; CORONAL LOOPS; SPECTRA AB We use coronal imaging observations with the Solar Dynamics Observatory/Atmospheric Imaging Assembly (AIA), and Hinode/Extreme-ultraviolet Imaging Spectrometer (EIS) spectral data to explore the potential of narrowband EUV imaging data for diagnosing the presence of hot (T greater than or similar to 5 MK) coronal plasma in active regions. We analyze observations of two active regions (AR 11281, AR 11289) with simultaneous AIA imaging and EIS spectral data, including the Ca XVII line (at 192.8 angstrom), which is one of the few lines in the EIS spectral bands sensitive to hot coronal plasma even outside flares. After careful co-alignment of the imaging and spectral data, we compare the morphology in a three-color image combining the 171, 335, and 94 angstrom AIA spectral bands, with the image obtained for Ca XVII emission from the analysis of EIS spectra. We find that in the selected active regions the Ca XVII emission is strong only in very limited areas, showing striking similarities with the features bright in the 94 angstrom (and 335 angstrom) AIA channels and weak in the 171 angstrom band. We conclude that AIA imaging observations of the solar corona can be used to track hot plasma (6-8 MK), and so to study its spatial variability and temporal evolution at high spatial and temporal resolution. C1 [Testa, Paola] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. [Reale, Fabio] Univ Palermo, Dipartimento Fis, I-90134 Palermo, Italy. [Reale, Fabio] INAF Osservatorio Astron Palermo, I-90134 Palermo, Italy. RP Testa, P (reprint author), Smithsonian Astrophys Observ, 60 Garden St,MS 58, Cambridge, MA 02138 USA. EM ptesta@cfa.harvard.edu OI Reale, Fabio/0000-0002-1820-4824 FU Lockheed-Martin [SP02H1701R]; NASA [NNM07AB07C, NNX10AF29G, 3001762433]; Italian Ministero dell'Universita e Ricerca and Agenzia Spaziale Italiana (ASI) [ASI/INAFI/023/09/0] FX We thank H. Warren for providing fitting routines for the EIS analysis, not included in the SolarSoft package. P.T. was supported by contract SP02H1701R from Lockheed-Martin, NASA contract NNM07AB07C to the Smithsonian Astrophysical Observatory, and NASA grants NNX10AF29G and 3001762433. F.R. acknowledges support from Italian Ministero dell'Universita e Ricerca and Agenzia Spaziale Italiana (ASI) contract ASI/INAFI/023/09/0 "Attivita scientifica per l'analisi dati Sole e plasma - Fase E2/F." Hinode is a Japanese mission developed and launched by ISAS/JAXA, with NAOJ as domestic partner and NASA and STFC (UK) as international partners. It is operated by these agencies in co-operation with ESA and the NSC (Norway). NR 32 TC 34 Z9 34 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD MAY 1 PY 2012 VL 750 IS 1 AR L10 DI 10.1088/2041-8205/750/1/L10 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 929CV UT WOS:000303039700010 ER PT J AU Dunbar, J Eichorst, SA Gallegos-Graves, L Silva, S Xie, G Hengartner, NW Evans, RD Hungate, BA Jackson, RB Megonigal, JP Schadt, CW Vilgalys, R Zak, DR Kuske, CR AF Dunbar, John Eichorst, Stephanie A. Gallegos-Graves, La Verne Silva, Shannon Xie, Gary Hengartner, N. W. Evans, R. David Hungate, Bruce A. Jackson, Robert B. Megonigal, J. Patrick Schadt, Christopher W. Vilgalys, Rytas Zak, Donald R. Kuske, Cheryl R. TI Common bacterial responses in six ecosystems exposed to 10 years of elevated atmospheric carbon dioxide SO ENVIRONMENTAL MICROBIOLOGY LA English DT Article ID MICROBIAL COMMUNITY STRUCTURE; NET NITROGEN MINERALIZATION; SPECIES-SPECIFIC RESPONSES; CO2 ENRICHMENT FACE; SOIL ORGANIC-MATTER; LITTER QUALITY; LEAF-LITTER; PHYLUM ACIDOBACTERIA; POPLAR PLANTATION; DECIDUOUS FOREST AB Six terrestrial ecosystems in the USA were exposed to elevated atmospheric CO2 in single or multifactorial experiments for more than a decade to assess potential impacts. We retrospectively assessed soil bacterial community responses in all six-field experiments and found ecosystem-specific and common patterns of soil bacterial community response to elevated CO2. Soil bacterial composition differed greatly across the six ecosystems. No common effect of elevated atmospheric CO2 on bacterial biomass, richness and community composition across all of the ecosystems was identified, although significant responses were detected in individual ecosystems. The most striking common trend across the sites was a decrease of up to 3.5-fold in the relative abundance of Acidobacteria Group 1 bacteria in soils exposed to elevated CO2 or other climate factors. The Acidobacteria Group 1 response observed in exploratory 16S rRNA gene clone library surveys was validated in one ecosystem by 100-fold deeper sequencing and semi-quantitative PCR assays. Collectively, the 16S rRNA gene sequencing approach revealed influences of elevated CO2 on multiple ecosystems. Although few common trends across the ecosystems were detected in the small surveys, the trends may be harbingers of more substantive changes in less abundant, more sensitive taxa that can only be detected by deeper surveys. C1 [Dunbar, John; Eichorst, Stephanie A.; Gallegos-Graves, La Verne; Silva, Shannon; Xie, Gary; Kuske, Cheryl R.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA. [Hengartner, N. W.] Los Alamos Natl Lab, Comp Computat & Stat Sci Div, Los Alamos, NM USA. [Evans, R. David] Washington State Univ, Sch Biol Sci, Pullman, WA 99164 USA. [Hungate, Bruce A.] No Arizona Univ, Dept Biol Sci, Flagstaff, AZ 86011 USA. [Hungate, Bruce A.] No Arizona Univ, Merriam Powell Ctr Environm Res, Flagstaff, AZ 86011 USA. [Jackson, Robert B.] Duke Univ, Dept Biol, Durham, NC 27708 USA. [Jackson, Robert B.; Vilgalys, Rytas] Duke Univ, Nicholas Sch Environm, Durham, NC 27708 USA. [Megonigal, J. Patrick] Smithsonian Environm Res Ctr, Washington, DC 20013 USA. [Schadt, Christopher W.] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37831 USA. [Zak, Donald R.] Univ Michigan, Sch Nat Resources & Environm, Ann Arbor, MI 48109 USA. [Zak, Donald R.] Univ Michigan, Dept Ecol & Evolutionary Biol, Ann Arbor, MI 48109 USA. RP Kuske, CR (reprint author), Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA. EM kuske@lanl.gov RI Hungate, Bruce/F-8991-2011; Schadt, Christopher/B-7143-2008; Eichorst, Stephanie A/A-1079-2017; OI Hungate, Bruce/0000-0002-7337-1887; Schadt, Christopher/0000-0001-8759-2448; Eichorst, Stephanie A/0000-0002-9017-7461; xie, gary/0000-0002-9176-924X; Vilgalys, Rytas/0000-0001-8299-3605 FU U.S. Department of Energy (DOE), Office of Science, Biological and Environmental Research [2009LANLF260] FX This work was supported by the U.S. Department of Energy (DOE), Office of Science, Biological and Environmental Research Program, through a Science Focus Area grant to C. R. K. and J. M. D. (2009LANLF260). Sanger and 454 titanium pyrosequencing were conducted by the U. S. DOE Joint Genome Institute. The six elevated CO2 research sites in this study were supported by the U. S. DOE Office of Science, Biological and Environmental Research Program. The authors thank Yvonne Rogers and Shannon Johnson for their technical assistance, Lawrence Ticknor for statistics consultation, and many people at the six field sites for site access and technical support. NR 85 TC 34 Z9 35 U1 2 U2 69 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 1462-2912 J9 ENVIRON MICROBIOL JI Environ. Microbiol. PD MAY PY 2012 VL 14 IS 5 BP 1145 EP 1158 DI 10.1111/j.1462-2920.2011.02695.x PG 14 WC Microbiology SC Microbiology GA 927TW UT WOS:000302934000004 PM 22264231 ER PT J AU Dew, RM Rehan, SM Tierney, SM Chenoweth, LB Schwarz, MP AF Dew, R. M. Rehan, S. M. Tierney, S. M. Chenoweth, L. B. Schwarz, M. P. TI A single origin of large colony size in allodapine bees suggests a threshold event among 50 million years of evolutionary tinkering SO INSECTES SOCIAUX LA English DT Article DE Eusociality; Morphological castes; Social evolution; Allodapini; Bees ID SOCIAL EVOLUTION; MOLECULAR PHYLOGENETICS; HYMENOPTERA; APIDAE; AUSTRALIA AB Evolutionary origins of highly eusocial organization involving morphological castes have been very rare, yet these origins have often led to enormous diversification and ecological success. This suggests that once an apparently severe selective barrier to highly eusocial behaviour is overcome, major new adaptive landscapes open up. One would therefore expect a discontinuity in patterns of evolutionary change across this barrier. However, we do not know if highly eusocial organization has evolved incrementally from less complex societies, or if it has involved some kind of evolutionary leap. Our study examines this issue using colony size data from 33 allodapine bee species, with a crown age of ca. 47 Mya. Our species cover all major allodapine clades, and include Exoneurella tridentata, the only known allodapine with morphologically discrete castes. Phylogenetic analyses indicate a strong effect of phylogeny on the evolution of maximum brood size, but the effect of phylogeny on maximum colony size (number of adults) depends on whether E. tridentata is excluded or included in analyses. We found no evidence of punctuational change in maximum colony or brood sizes over the phylogeny as a whole, but colony and brood sizes in E. tridentata fall well beyond variation among the other allodapines. Colony size in E. tridentata therefore represents an evolutionary outcome that does not fit within the kinds of incremental changes found in other allodapines. We propose that E. tridentata indicates the crossing of an important threshold, and this has entailed some very unusual ecological circumstances. C1 [Rehan, S. M.] Brock Univ, Dept Biol Sci, St Catharines, ON L2S 3A1, Canada. [Dew, R. M.; Rehan, S. M.; Chenoweth, L. B.; Schwarz, M. P.] Flinders Univ S Australia, Sch Biol Sci, Adelaide, SA, Australia. [Tierney, S. M.] Smithsonian Trop Res Inst, Balboa 084303092, Panama. RP Rehan, SM (reprint author), Brock Univ, Dept Biol Sci, Glenridge Ave, St Catharines, ON L2S 3A1, Canada. EM rebecca.rmd@hotmail.com; sandra.rehan@gmail.com; tierneys@si.edu; luke.chenoweth@flinders.edu.au; michael.schwarz@flinders.edu.au RI Tierney, Simon/H-2410-2015 OI Tierney, Simon/0000-0002-8812-6753 FU Schwarz lab; Australian Research Council; Natural Sciences and Engineering Research Council; Smithsonian Tropical Research Institute FX The authors would like to thank past and present members of the Schwarz lab for their assistance and support, including their previous work collecting gene sequences. This work was supported by Australian Research Council grants to MPS, Natural Sciences and Engineering Research Council Post Graduate Scholarship to SMR and an Earl S Tupper Fellowship from the Smithsonian Tropical Research Institute to SMT. NR 25 TC 7 Z9 7 U1 1 U2 14 PU SPRINGER BASEL AG PI BASEL PA PICASSOPLATZ 4, BASEL, 4052, SWITZERLAND SN 0020-1812 J9 INSECT SOC JI Insect. Soc. PD MAY PY 2012 VL 59 IS 2 BP 207 EP 214 DI 10.1007/s00040-011-0206-6 PG 8 WC Entomology SC Entomology GA 925HG UT WOS:000302751200009 ER PT J AU Lovette, IJ Arbogast, BS Curry, RL Zink, RM Botero, CA Sullivan, JP Talaba, AL Harris, RB Rubenstein, DR Ricklefs, RE Bermingham, E AF Lovette, Irby J. Arbogast, Brian S. Curry, Robert L. Zink, Robert M. Botero, Carlos A. Sullivan, John P. Talaba, Amanda L. Harris, Rebecca B. Rubenstein, Dustin R. Ricklefs, Robert E. Bermingham, Eldredge TI Phylogenetic relationships of the mockingbirds and thrashers (Aves: Mimidae) SO MOLECULAR PHYLOGENETICS AND EVOLUTION LA English DT Article DE Mimidae; Mockingbird; Thrasher; Galapagos; Phylogeny; Classification ID MITOCHONDRIAL SEQUENCE DATA; CURVE-BILLED THRASHER; GALAPAGOS MOCKINGBIRDS; MOLECULAR PHYLOGENY; NORTHERN MOCKINGBIRDS; GEOGRAPHIC-VARIATION; AVIAN RADIATION; SPECIES LIMITS; PASSERIDA AVES; MAJOR LINEAGES AB The mockingbirds, thrashers and allied birds in the family Mimidae are broadly distributed across the Americas. Many aspects of their phylogenetic history are well established, but there has been no previous phylogenetic study that included all species in this radiation. Our reconstructions based on mitochondrial and nuclear DNA sequence markers show that an early bifurcation separated the Mimidae into two clades, the first of which includes North and Middle American taxa (Melanotis, Melanoptila, Dumetella) plus a small radiation that likely occurred largely within the West Indies (Ramphocinclus, Allenia, Margarops, Cinclocerthia). The second and larger radiation includes the Toxostoma thrasher clade, along with the monotypic Sage Thrasher (Oreoscoptes) and the phenotypically diverse and broadly distributed Mimus mockingbirds. This mockingbird group is biogeographically notable for including several lineages that colonized and diverged on isolated islands, including the Socorro Mockingbird (Mimus graysoni, formerly Mimodes) and the diverse and historically important Galapagos mockingbirds (formerly Nesomimus). Our reconstructions support a sister relationship between the Galapagos mockingbird lineage and the Bahama Mockingbird (M. gundlachi) of the West Indies, rather than the Long-tailed Mockingbird (M. longicaudatus) or other species presently found on the South American mainland. Relationships within the genus Toxostoma conflict with traditional arrangements but support a tree based on a preivous mtDNA study. For instance, the southern Mexican endemic Ocellated Thrasher (T. ocellatum) is not an isolated sister species of the Curve-billed thrasher (T. curvirostre). (C) 2011 Published by Elsevier Inc. C1 [Lovette, Irby J.; Sullivan, John P.; Talaba, Amanda L.; Harris, Rebecca B.] Cornell Univ, Cornell Lab Ornithol, Fuller Evolutionary Biol Program, Ithaca, NY 14950 USA. [Arbogast, Brian S.] Univ N Carolina, Dept Biol & Marine Biol, Wilmington, NC 28403 USA. [Curry, Robert L.] Villanova Univ, Dept Biol, Villanova, PA 19085 USA. [Zink, Robert M.] Univ Minnesota, Bell Museum, St Paul, MN 55108 USA. [Botero, Carlos A.] Natl Evolutionary Synth Ctr, Durham, NC 27707 USA. [Rubenstein, Dustin R.] Columbia Univ, Dept Ecol Evolut & Environm Biol, New York, NY 10027 USA. [Ricklefs, Robert E.] Univ Missouri, Dept Biol, St Louis, MO 63121 USA. [Bermingham, Eldredge] Smithsonian Trop Res Inst, Balboa, Panama. RP Lovette, IJ (reprint author), Cornell Univ, Cornell Lab Ornithol, Fuller Evolutionary Biol Program, 159 Sapsucker Woods Rd, Ithaca, NY 14950 USA. EM IJL2@cornell.edu RI Lovette, Irby/P-3477-2014; Rubenstein, Dustin/A-3451-2015; OI Rubenstein, Dustin/0000-0002-4999-3723; Botero, Carlos A./0000-0003-0955-2795 FU Microsoft Corporation; National Evolutionary Synthesis Center (NESCent), NSF [EF-0905606]; [NSF-DEB-0924741]; [NSF-DEB-0515981] FX We thank B. McCleery and D. Rabosky for advice and assistance, and two reviewers for the comments on the manuscript. Part of this work was carried out using the resources of the Computational Biology Service Unit at Cornell University which is partially funded by Microsoft Corporation. We thank the following institutions, their field collaborators, and their collections staff for the loan of genetic materials: Academy of Natural Sciences, Philadelphia; Bell Museum of Natural History, University of Minnesota; Cornell University Museum of Vertebrates; Louisiana State University Museum of Natural Science; Museo Nacional de Historia Natural, Santiago, Chile; San Diego State University Museum of Biodiversity; Wake Forest University. We thank B. Arbogast and D. Cadena for providing previously unpublished sequences generated in their laboratories. We are grateful to P. Tubaro of the Museo Argentino de Ciencias Naturales, Buenos Aires for his guidance in obtaining specimens of South American mockingbird species. CAB is funded by the National Evolutionary Synthesis Center (NESCent), NSF Grant EF-0905606. This Project was additionally supported by awards NSF-DEB-0924741 and NSF-DEB-0515981. NR 67 TC 15 Z9 15 U1 3 U2 35 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 1055-7903 EI 1095-9513 J9 MOL PHYLOGENET EVOL JI Mol. Phylogenet. Evol. PD MAY PY 2012 VL 63 IS 2 BP 219 EP 229 DI 10.1016/j.ympev.2011.07.009 PG 11 WC Biochemistry & Molecular Biology; Evolutionary Biology; Genetics & Heredity SC Biochemistry & Molecular Biology; Evolutionary Biology; Genetics & Heredity GA 917TR UT WOS:000302202000001 PM 21867766 ER PT J AU Horn, JW van Ee, BW Morawetz, JJ Riina, R Steinmann, VW Berry, PE Wurdack, KJ AF Horn, James W. van Ee, Benjamin W. Morawetz, Jeffery J. Riina, Ricarda Steinmann, Victor W. Berry, Paul E. Wurdack, Kenneth J. TI Phylogenetics and the evolution of major structural characters in the giant genus Euphorbia L. (Euphorbiaceae) SO MOLECULAR PHYLOGENETICS AND EVOLUTION LA English DT Article DE Character state reconstruction; Convergent evolution; Cyathium; Euphorbia; Growth form; Multigene analyses; Xerophyte ID CHAIN MONTE-CARLO; SUBGENUS CHAMAESYCE EUPHORBIACEAE; FLOWER-INFLORESCENCE BOUNDARY; SOUTHEASTERN UNITED STATES; DNA-SEQUENCES; DISCRETE CHARACTERS; MAXIMUM-LIKELIHOOD; CORRELATED EVOLUTION; MOLECULAR PHYLOGENY; CLADE EUPHORBIA AB Euphorbia is among the largest genera of angiosperms, with about 2000 species that are renowned for their remarkably diverse growth forms. To clarify phylogenetic relationships in the genus, we used maximum likelihood, Bayesian, and parsimony analyses of DNA sequence data from 10 markers representing all three plant genomes, averaging more than 16 kbp for each accession. Taxon sampling included 176 representatives from Euphorbioideae (including 161 of Euphorbia). Analyses of these data robustly resolve a backbone topology of four major, subgeneric clades-Esula, Rhizanthium, Euphorbia, and Chamaesyce-that are successively sister lineages. Ancestral state reconstructions of six reproductive and growth form characters indicate that the earliest Euphorbia species were likely woody, non-succulent plants with helically arranged leaves and 5-glanded cyathia in terminal inflorescences. The highly modified growth forms and reproductive features in Euphorbia have independent origins within the subgeneric clades. Examples of extreme parallelism in trait evolution include at least 14 origins of xeromorphic growth forms and at least 13 origins of seed caruncles. The evolution of growth form and inflorescence position are significantly correlated, and a pathway of evolutionary transitions is supported that has implications for the evolution of Euphorbia xerophytes of large stature. Such xerophytes total more than 400 species and are dominants of vegetation types throughout much of arid Africa and Madagascar. Published by Elsevier Inc. C1 [Horn, James W.; Wurdack, Kenneth J.] Smithsonian Inst, Dept Bot, Washington, DC 20013 USA. [van Ee, Benjamin W.] Black Hills State Univ Herbarium, Spearfish, SD 57799 USA. [Morawetz, Jeffery J.] Rancho Santa Ana Bot Garden, Claremont, CA 91711 USA. [Riina, Ricarda; Berry, Paul E.] Dept Ecol & Evolutionary Biol, Ann Arbor, MI 48108 USA. [Riina, Ricarda; Berry, Paul E.] Univ Michigan Herbarium, Ann Arbor, MI 48108 USA. [Riina, Ricarda] CSIC, E-28014 Madrid, Spain. [Steinmann, Victor W.] Ctr Reg Bajio, Inst Ecol, AC, Patzcuaro 61600, Michoacan, Mexico. RP Wurdack, KJ (reprint author), Smithsonian Inst, Dept Bot, NMNH MRC 166,POB 37012, Washington, DC 20013 USA. EM wurdackk@si.edu RI Riina, Ricarda/J-1032-2014 OI Riina, Ricarda/0000-0002-7423-899X FU National Science Foundation PBI [DEB 0616533]; Smithsonian Institution FX The authors thank the following individuals and institutions for providing plant or DNA samples: T. Haevermans (P), D. Hannon (RSA, Huntington), Y. Yang and B. Dorsey (MICH), Rolf Becker (PRE), J. Molero (BCN), UC Davis Botanical Conservatory, Huntington Botanical Gardens, International Euphorbia Society, FTG, K, MICH, MO, NY, RSA, US, and WAG. Support for this study came from a National Science Foundation PBI Grant (DEB 0616533) and the Smithsonian Institution. NR 140 TC 47 Z9 54 U1 5 U2 78 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 1055-7903 EI 1095-9513 J9 MOL PHYLOGENET EVOL JI Mol. Phylogenet. Evol. PD MAY PY 2012 VL 63 IS 2 BP 305 EP 326 DI 10.1016/j.ympev.2011.12.022 PG 22 WC Biochemistry & Molecular Biology; Evolutionary Biology; Genetics & Heredity SC Biochemistry & Molecular Biology; Evolutionary Biology; Genetics & Heredity GA 917TR UT WOS:000302202000009 PM 22273597 ER PT J AU Barrantes, G Eberhard, WG AF Barrantes, Gilbert Eberhard, William G. TI Extreme Behavioral Adjustments by an Orb-Web Spider to Restricted Spaces SO ETHOLOGY LA English DT Article ID NEPHILA-CLAVIPES ARANEAE; AGGREGATIVE BEHAVIOR; WEAVING SPIDERS; TETRAGNATHIDAE; ICHNEUMONIDAE; HYMENOPTERA; STRATEGIES; ARANEIDAE; CONSTRUCTION; PARASITOIDS AB Adaptive flexibility in response to environmental variation is often advantageous and occurs in many types of traits in many species. Although the basic designs of the orb webs of a given species are relatively uniform, spiders can adjust their webs to some types of environmental variation. This study of adult female Leucauge argyra tests the extremes to which they can adjust with respect to reduced area in which to build, and documents probably the most pronounced flexibility in orb design ever recorded. These adjustments revealed several behavioral rules that guide orb construction behavior. Spiders adjusted at least seven probably independent aspects of orb design when confined in tiny spaces that spanned about 7% of the maximum distance normally spanned by webs in the field and that had diameters that were only about three times the length of the spider itself. Webs in intermediate sized containers had intermediate designs, and many of the adjustments appear to result from extensions of the behavioral rules guiding orb construction in less severely restricted spaces in the field. C1 [Barrantes, Gilbert; Eberhard, William G.] Univ Costa Rica, Escuela Biol, San Jose 2060, Costa Rica. [Eberhard, William G.] Smithsonian Trop Res Inst, Panama City, FL USA. RP Barrantes, G (reprint author), Univ Costa Rica, Escuela Biol, Ciudad Univ Rodrigo Facio, San Jose 2060, Costa Rica. EM gilbert.barrantes@gmail.com FU Smithsonian Tropical Research Institute; Vicerrectoria de Investigacion of the Universidad de Costa Rica FX Anita Aisenberg generously shared her key discovery that female L. argyra will build orbs in small plastic cups; Jairo Moya made useful suggestions regarding the designs of containers and helped construct them. Sr. Pedro Gaspar allowed us to work in his oil palm plantation. The Smithsonian Tropical Research Institute and the Vicerrectoria de Investigacion of the Universidad de Costa Rica provided financial support. NR 48 TC 8 Z9 9 U1 3 U2 35 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0179-1613 J9 ETHOLOGY JI Ethology PD MAY PY 2012 VL 118 IS 5 BP 438 EP 449 DI 10.1111/j.1439-0310.2012.02029.x PG 12 WC Psychology, Biological; Behavioral Sciences; Zoology SC Psychology; Behavioral Sciences; Zoology GA 924OA UT WOS:000302700000003 ER PT J AU Puerta-Pinero, C Brotons, L Coll, L Gonzalez-Olabarria, JR AF Puerta-Pinero, C. Brotons, L. Coll, L. Gonzalez-Olabarria, J. R. TI Valuing acorn dispersal and resprouting capacity ecological functions to ensure Mediterranean forest resilience after fire SO EUROPEAN JOURNAL OF FOREST RESEARCH LA English DT Article DE Disturbance; Ecosystem services; Garrulus glandarius; Pinus spp; Quercus spp; Resprouters ID ECOSYSTEM SERVICES; CATALONIA NORTHEAST; SEED DISPERSAL; SPAIN; MANAGEMENT; REGENERATION; ORGANISMS; LANDSCAPE; SURVIVAL; STAND AB Ecological processes within forests provide vital ecosystem services to society, most of which depend on the persistence of tree cover that can be altered after the impact of a disturbance. The aim of the present study was to examine the role of seed dispersal and resprouting that mediate resilience to large fires and evaluate the economic costs that these ecological functions provide. We used field data from 412 plots of the Spanish National Forest Inventory providing information on pre- and post-fire conditions of Mediterranean Pinus spp. and Quercus spp.-dominated forests. Then, we determined the need for restoration (N (Rest)) and estimated the minimum pre-fire densities needed to ensure adequate post-fire cover. Economic valuations were assessed through three different scenarios (Sc) of possible human-management actions aimed at ensuring proper post-fire tree cover: Sc. 1) a pre-fire management scenario evaluating the costs of planting Quercus spp. seedlings in the understory, mimicking the whole dispersal function; Sc. 2) a pre-fire scenario in which enrichment plantations increased the densities of natural oaks; and Sc. 3) a post-fire scenario where the restoration is done through planting pines within the burned area. Approximately 90% of the burned area (371 out of 412 plots) was able to recover after fire supporting the view that Mediterranean forests are resilient to fire. This resilience was primarily mediated by biotic seed dispersal and posterior resprouting of tree species. These ecological functions saved between 626 and 1,326 a,not sign/ha compared to the human-management actions. Ensuring key ecological processes within forests increases forest resilience and recovery after fire leading to a generally significant saving of economic resources. In a perspective of increased future impact of disturbances and decrease availability of economic resources for forest management, the implications of the present study can be far reaching and extended to other forest planning exercises. C1 [Puerta-Pinero, C.; Brotons, L.; Coll, L.; Gonzalez-Olabarria, J. R.] Ctr Tecnol Forestal Catalunya CTFC, Solsona 25280, Spain. RP Puerta-Pinero, C (reprint author), Smithsonian Trop Res Inst, Unit 0948 DPO AA, Miami, FL 34002 USA. EM puertac@si.edu RI Gonzalez Olabarria, Jose Ramon/D-2575-2009; Puerta Pinero, Carolina/B-3186-2012; Coll, Lluis/E-8724-2015; Brotons, Lluis/D-1570-2009 OI Gonzalez Olabarria, Jose Ramon/0000-0002-5040-712X; Puerta Pinero, Carolina/0000-0002-0584-7548; Coll, Lluis/0000-0002-8035-5949; Brotons, Lluis/0000-0002-4826-4457 FU Spanish Ministry of Science and Innovation [CGL2008-05506-C02-01/BOS]; Consolider-Ingenio Montes project [CSD2008-00040]; Ramon y Cajal; Juan de la Cierva; Fundacion Caja Madrid; Catalan Government [SGR2009-531] FX We thank Ryan Chisholm and several anonymous referees for their review of this manuscript. Cian Gill kindly helped us with English translation and grammar. This research was primarily supported by the Spanish Ministry of Science and Innovation via CGL2008-05506-C02-01/BOS project and the Consolider-Ingenio Montes project (CSD2008-00040); a Ramon y Cajal contract to LB and LC; and a Juan de la Cierva contract to JRG. CPP was partially supported by a Fundacion Caja Madrid grant. Partial funding was also provided by the Catalan Government grant SGR2009-531. NR 36 TC 11 Z9 11 U1 1 U2 27 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1612-4669 J9 EUR J FOREST RES JI Eur. J. For. Res. PD MAY PY 2012 VL 131 IS 3 BP 835 EP 844 DI 10.1007/s10342-011-0557-6 PG 10 WC Forestry SC Forestry GA 920PJ UT WOS:000302418400028 ER PT J AU Ugan, A Coltrain, J AF Ugan, Andrew Coltrain, Joan TI Stable isotopes, diet, and taphonomy: a look at using isotope-based dietary reconstructions to infer differential survivorship in zooarchaeological assemblages SO JOURNAL OF ARCHAEOLOGICAL SCIENCE LA English DT Article DE Stable isotopes; Great Basin; Taphonomy; Dietary reconstruction; SISUS ID MEDIEVAL WARM PERIOD; BONE-COLLAGEN; POPULATION-DENSITY; LATE HOLOCENE; GREAT-BASIN; AMINO-ACIDS; PROTEIN DIGESTIBILITY; FORAGING EFFICIENCY; RESOURCE DEPRESSION; BIOLOGICAL APATITE AB Archaeology has always faced the problem of making informed inferences based on an incomplete record. Zooarchaeological studies of prehistoric hunting and diet offer a clear case in point, where a range of behavioral and taphonomic factors can produce a substantial disconnect between what people actually captured and ate and what archaeologists recover and interpret. We explore this disconnect by presenting stable C and N data for wild faunas, archaeological maize, and three human burials from Fremont-period sites in southeastern Utah, the United States. We use these data to estimate faunal contributions to prehistoric diets and compare the results with previous zooarchaeological analyses of faunas from the same sites. Results for the two approaches differ sharply, with isotopic estimates showing much higher contributions of small and lowland game. We discuss these results in terms of both local prehistory and wider issues of taphonomy and dietary analysis. (C) 2011 Elsevier Ltd. All rights reserved. C1 [Ugan, Andrew] Smithsonian Trop Res Inst, Unit 9100, Dpo, AA 34002 USA. [Ugan, Andrew; Coltrain, Joan] Univ Utah, Dept Anthropol, Salt Lake City, UT 84112 USA. RP Ugan, A (reprint author), Smithsonian Trop Res Inst, Unit 9100, Box 0948, Dpo, AA 34002 USA. EM andrew.ugan@gmail.com; joan.coltrain@anthro.utah.edu FU NSF [0552214] FX We would like to thank Marian Jacklin, Heritage Manager for the Dixie National Forest, for help obtaining pine nuts from Parowan Valley, the folks at the SIRFER lab, University of Utah, for their help with running the animal samples, and Ben Turner and Dayana Agudo at the STRI isotope facility for help with the modern pine nuts. The quality of the manuscript was substantially improved by the comments of two anonymous reviewers. Permission for destructive analysis of the faunal specimens was granted by the Utah Museum of Natural History. Support for this project provided by NSF grant 0552214. NR 133 TC 8 Z9 8 U1 4 U2 20 PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0305-4403 EI 1095-9238 J9 J ARCHAEOL SCI JI J. Archaeol. Sci. PD MAY PY 2012 VL 39 IS 5 BP 1401 EP 1411 DI 10.1016/j.jas.2011.12.027 PG 11 WC Anthropology; Archaeology; Geosciences, Multidisciplinary SC Anthropology; Archaeology; Geology GA 910EV UT WOS:000301620900021 ER PT J AU Laliberte, E Turner, BL Costes, T Pearse, SJ Wyrwoll, KH Zemunik, G Lambers, H AF Laliberte, Etienne Turner, Benjamin L. Costes, Thomas Pearse, Stuart J. Wyrwoll, Karl-Heinz Zemunik, Graham Lambers, Hans TI Experimental assessment of nutrient limitation along a 2-million-year dune chronosequence in the south-western Australia biodiversity hotspot SO JOURNAL OF ECOLOGY LA English DT Article DE co-limitation; ecosystem decline; ecosystem progression; ecosystem retrogression; pedogenesis; plant-soil (below-ground) interactions; productivity; soil age; stoichiometry; succession ID LONG-TERM CHRONOSEQUENCES; SWAN COASTAL-PLAIN; PHOSPHORUS LIMITATION; SOIL DEVELOPMENT; LUPINUS-ALBUS; RAIN-FOREST; ECOSYSTEM RETROGRESSION; ROCK PHOSPHATE; CO-LIMITATION; PERTH BASIN AB 1. The classical model of long-term ecosystem development suggests that primary productivity is limited by nitrogen (N) on young substrates and phosphorus (P) on older substrates. Measurements of foliar and soil nutrients along soil chronosequences support this model, but direct tests through nutrient-addition experiments are rare. 2. We conducted a nutrient-limitation bioassay using phytometer species grown in soils from five stages of a >2-million-year dune chronosequence in south-western Australia. This long-term chronosequence is located within a region of exceptionally high plant species diversity and has not been previously studied in the context of ecosystem development. 3. Growth of unfertilized phytometers, a proxy for primary productivity, peaked on young soils (hundreds to a few thousand years) and then declined steadily on older soils. This decline was linked to P limitation, and its rapid appearance (<7000 years) compared to other sequences reflects the low P concentration in the parent material. As predicted, growth of canola was N-limited on the youngest soil (stage 1), co-limited by multiple nutrients in stage 2 and increasingly P-limited thereafter. 4. Growth of wheat was P-limited from stage 2 onwards, yet on the youngest soil it was co-limited by potassium (K) and micronutrients - most likely iron (Fe). Nitrogen addition also decreased the root: shoot ratio of wheat such that shoot growth was higher than in the control. We attribute these responses to a parent material that is very low in K and N and strongly alkaline (pH [H2O] > 9), being of a marine origin (i.e. carbonate dunes). Fe is poorly soluble at high pH and K likely plays a role in the secretion of Fe-mobilizing exudates from wheat roots. 5. Synthesis. Our results provide strong support for the long-term ecosystem-development model, particularly with regard to the appearance of P limitation and associated declines in productivity. However, our study also shows that N cannot be assumed to invariably be the most important limiting nutrient in young soils, and it is unlikely to be the only limiting nutrient in calcareous soils. This south-western Australian long-term chronosequence provides an excellent opportunity to explore edaphic controls over plant species diversity. C1 [Laliberte, Etienne; Turner, Benjamin L.; Costes, Thomas; Pearse, Stuart J.; Zemunik, Graham; Lambers, Hans] Univ Western Australia, Sch Plant Biol, Crawley 6009, Australia. [Turner, Benjamin L.] Smithsonian Trop Res Inst, Balboa, Ancon, Panama. [Costes, Thomas] Inst Natl Hort & Paysage, Ctr Angers, F-49045 Angers 01, France. [Wyrwoll, Karl-Heinz] Univ Western Australia, Sch Earth & Environm, Crawley 6009, Australia. RP Laliberte, E (reprint author), Univ Western Australia, Sch Plant Biol, 35 Stirling Highway, Crawley 6009, Australia. EM etienne.laliberte@uwa.edu.au RI Laliberte, Etienne/B-6855-2008; Turner, Benjamin/E-5940-2011; Lambers, Hans/A-1544-2008; Pearse, Stuart/A-6610-2008 OI Laliberte, Etienne/0000-0002-3167-2622; Turner, Benjamin/0000-0002-6585-0722; Lambers, Hans/0000-0002-4118-2272; Pearse, Stuart/0000-0003-3737-0788 FU University of Western Australia; Australian Research Council (ARC) DECRA [DE120100352]; ARC FX We thank the Western Australia Department of Environment and Conservation (DEC), particularly Niall Sheehy, for their cooperation with soil collection and Tania Romero, Dianne de la Cruz and Luis Ramos for laboratory support. We also thank the Editor and two anonymous reviewers for comments that helped to strengthen the manuscript. Wheat seed was generously supplied by Daniel Mullan from Intergrain Pty Ltd, lupin seed by Bevan Buirchell from the Department of Agriculture and Food Western Australia (DAFWA) and canola seed by Matthew Nelson from Canola Breeders Western Australia Pty Ltd (CBWA). E. L. was supported by a Research Fellowship from the University of Western Australia and by an Australian Research Council (ARC) DECRA (DE120100352). H. L. acknowledges financial support from ARC. NR 82 TC 53 Z9 53 U1 6 U2 99 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0022-0477 EI 1365-2745 J9 J ECOL JI J. Ecol. PD MAY PY 2012 VL 100 IS 3 BP 631 EP 642 DI 10.1111/j.1365-2745.2012.01962.x PG 12 WC Plant Sciences; Ecology SC Plant Sciences; Environmental Sciences & Ecology GA 923MK UT WOS:000302623200006 ER PT J AU Katabuchi, M Kurokawa, H Davies, SJ Tan, S Nakashizuka, T AF Katabuchi, Masatoshi Kurokawa, Hiroko Davies, Stuart J. Tan, Sylvester Nakashizuka, Tohru TI Soil resource availability shapes community trait structure in a species-rich dipterocarp forest SO JOURNAL OF ECOLOGY LA English DT Article DE determinants of plant community diversity and structure; functional traits; habitat filtering; Lambir; limiting similarity; null models; soil nutrients; tropical forest dynamics plot ID RAIN-FOREST; FUNCTIONAL TRAITS; TROPICAL FOREST; HABITAT SPECIALIZATION; PHYLOGENETIC STRUCTURE; LIMITING SIMILARITY; PLANT-COMMUNITIES; AMAZONIAN FOREST; TREE COMMUNITY; WOOD DENSITY AB 1. Habitat filtering and limiting similarity have been proposed as two opposing forces structuring community memberships. Community assembly theory proposes habitat filtering as a mechanism restricting community membership according to the ecological strategies of species in a given environment. Limiting similarity posits that some species exclude others that are ecologically similar. 2. We quantified nine ecophysiological and life-history traits for 80 dipterocarp species in the 52-ha Lambir Forest Dynamics Plot (FDP; Lambir Hills National Park, Sarawak, Malaysia). We studied forests on four soil types differing in fertility and moisture, focusing on soil resource availabilities as environmental determinants of habitat filtering processes. We used a null-model approach to detect the strengths of habitat filtering and limiting similarity. We quantified the relative contributions of soil resources (nutrients and water) to habitat filtering by comparing the strength of habitat filtering processes (i.e. effect sizes) at the overall plot scale and at the individual soil-type scale. We also compared the strengths of assembly processes among soil types. 3. Compared to a null model at microscale (20 x 20 m), trait range and variance were reduced for seven of nine functional traits, suggesting the importance of habitat filtering in the dipterocarp community. We also found a broader distribution of five traits, and more even spacing for seven traits (20 x 20 m), which is consistent with the concept of limiting similarity. Randomizations that swapped species occurrences within soil types (i.e. null models removing soil effects in assembly processes) were much closer to observed values, and there were no phylogenetic constraints on habitat association. Hence, soil resource availability acted as a habitat filtering mechanismin the FDP; relative contributions to habitat filtering ranged from 35% for seed mass to 77% for relative growth rate. Furthermore, soil types apparently affected the strengths of habitat filtering and limiting similarity. 4. Synthesis. We demonstrate that soil resource availability is a crucial determinant of habitat filtering in this species-rich tropical rain forest; the strengths of assembly processes differed among soil types. Variation in soil resource availability can shape the distribution of traits through community assembly processes, promoting trait diversification and species coexistence. C1 [Katabuchi, Masatoshi; Kurokawa, Hiroko; Nakashizuka, Tohru] Tohoku Univ, Grad Sch Life Sci, Aoba Ku, Sendai, Miyagi 9808578, Japan. [Davies, Stuart J.] Harvard Univ, Smithsonian Trop Res Inst, Ctr Trop Forest Sci, Cambridge, MA 02138 USA. [Tan, Sylvester] Sarawak Forestry Corp, Kuching 93250, Sarawak, Malaysia. RP Katabuchi, M (reprint author), Tohoku Univ, Grad Sch Life Sci, Aoba Ku, 6-3 Aoba, Sendai, Miyagi 9808578, Japan. EM mattocci27@gmail.com FU NSF [DEB-9107247, DEB-9629601]; Monbusho grant [06041094, 08NP0901, 09NP0901]; JSPS; Ministry of the Environment, Japan [S-9-3]; [2337007] FX We thank the Forest Department of Sarawak and Sarawak Forest Research Corporation for their kind permission to conduct research in Lambir Hills National Park. We also thank many people who contributed to the 52-ha Long-Term Ecological Research Project. The 52-ha Long-Term Ecological Research Project is a collaborative project of the Forest Department of Sarawak, Malaysia, Harvard University, USA (under NSF awards DEB-9107247 and DEB-9629601 to P. S. Ashton), and Osaka City University, Japan (under Monbusho grant 06041094 to T. Yamakura, 08NP0901 to S. Tamura and 09NP0901 to S. Sasaki). We are also grateful to Douglas and Rose for their assistance in the field, to N. Swenson for helpful advice on the analyses, to M. Aiba, P. Bellingham, W. Cornwell, H. Cornelissen, K. Kitajima and one anonymous referee for constructive comments on an early draft of the manuscript. This study was supported by Grant-in-Aid for JSPS Fellows to M. Kand partly supported by Grant-in-Aid for Scientific Research (B) (2337007) and the Environment Research and Technology Development Fund (S-9-3) of the Ministry of the Environment, Japan. NR 56 TC 31 Z9 33 U1 10 U2 69 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0022-0477 J9 J ECOL JI J. Ecol. PD MAY PY 2012 VL 100 IS 3 BP 643 EP 651 DI 10.1111/j.1365-2745.2011.01937.x PG 9 WC Plant Sciences; Ecology SC Plant Sciences; Environmental Sciences & Ecology GA 923MK UT WOS:000302623200007 ER PT J AU Allendorf, TD Aung, M Songer, M AF Allendorf, Teri D. Aung, Myint Songer, Melissa TI Using residents' perceptions to improve park-people relationships in Chatthin Wildlife Sanctuary, Myanmar SO JOURNAL OF ENVIRONMENTAL MANAGEMENT LA English DT Article DE Protected areas; Residents; Attitudes; Perceptions; Park-people; Communities ID PROTECTED AREA MANAGEMENT; CONSERVATION ATTITUDES; NATIONAL-PARK; COMMUNITY ATTITUDES; LOCAL PEOPLE; TANZANIA; BURMA; NEPAL; BIODIVERSITY; ELEPHANTS AB The complex and context-specific relationships that local residents have with neighboring protected areas present many challenges for protected area (PA) management. While long-term, interdisciplinary approaches may be necessary to fully understand park-people relationships within a particular PA, the reality is that management decisions for the majority of PAs in the world are made by protected area staff with little or no external assistance. One potential entry point for management to understand park-people relationships and improve management is through understanding people's perceptions of PAs. This paper presents a study from Chatthin Wildlife Sanctuary in central Myanmar designed to explore the impact of using residents' attitudes to directly inform management strategies. We conducted a survey to determine attitudes and determinants of attitudes toward CWS. In response to the survey, the warden made changes to the Sanctuary's management strategy to accommodate local needs and perceptions. Four years later, we repeated the survey to explore the effects of the management changes on people's perceptions and found that people were significantly more likely to like the sanctuary, less likely to mention problems, and more likely to mention benefits. People's negative perceptions of management conflicts and crop damage decreased and their positive perceptions of conservation and ecosystem service benefits and extraction benefits increased. This study demonstrates that residents' perceptions can be used by management as a starting point to improve park-people relationships through feasible and targeted interventions that are meaningful to local communities and their relationships with PAs. (C) 2012 Elsevier Ltd. All rights reserved. C1 [Allendorf, Teri D.] Univ Wisconsin Madison, Land Tenure Ctr, Mazomanie, WI 53560 USA. [Aung, Myint] Friends Wildlife, Yankin Township, Yangon, Myanmar. [Songer, Melissa] Conservat Ecol Ctr, Smithsonian Conservat Biol Inst, Front Royal, VA 22630 USA. RP Allendorf, TD (reprint author), Univ Wisconsin Madison, Land Tenure Ctr, 110 Elm St, Mazomanie, WI 53560 USA. EM allendorf@wisc.edu; myintaungwildlife@gmail.com; songerm@si.edu FU National Zoo FX We thank Khine Khine Swe, Thida Oo, and Kyaw Kyaw Moe for their assistance collecting the interview data. We thank the staff of Chatthin Wildlife Sanctuary for facilitating the surveys. We thank the Friends of the National Zoo for providing financial support. NR 46 TC 12 Z9 14 U1 3 U2 37 PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0301-4797 EI 1095-8630 J9 J ENVIRON MANAGE JI J. Environ. Manage. PD MAY PY 2012 VL 99 BP 36 EP 43 DI 10.1016/j.jenvman.2012.01.004 PG 8 WC Environmental Sciences SC Environmental Sciences & Ecology GA 920YX UT WOS:000302446300005 PM 22318239 ER PT J AU Wiensz, JT Bourassa, AE Lloyd, ND Wiacek, A Martin, RV Degenstein, DA AF Wiensz, J. Truitt Bourassa, Adam E. Lloyd, Nick D. Wiacek, Aldona Martin, Randall V. Degenstein, Doug A. TI Photon conservation in scattering by large ice crystals with the SASKTRAN radiative transfer model SO JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER LA English DT Article DE Ice; Cirrus; Aerosol; Spherical successive-orders; Forward scattering ID ALGEBRAIC RECONSTRUCTION TECHNIQUE; TRUNCATION APPROXIMATION; PHASE FUNCTIONS; RETRIEVAL AB The scattering of visible light by ice crystals and dust in radiative transfer models is challenging in part due to the large amount of scattering in the forward direction. We introduce a technique that ensures numerical conservation of photons in any radiative transfer model and that quantifies the integration error associated with highly asymmetric phase functions. When applied to a successive-orders of scatter model, the technique illustrates the high accuracy obtained in numerical integration of molecular and aerosol scattering. As well, a phase function truncation and renormalization technique is applied to scattering by ice crystals with very large size parameters, between 100 and 1000, and the scaled radiative transfer equation is solved with the spherical successive-orders model, SASKTRAN. Since computations shown this work are performed in a fully spherical model atmosphere, the computed radiances are not subject to the discontinuity at the horizon that is inherent in models using a plane-parallel assumption. The methods introduced in this work are of particular interest in modeling limb radiances in the presence of thin cirrus clouds. (C) 2012 Elsevier Ltd. All rights reserved. C1 [Wiensz, J. Truitt; Bourassa, Adam E.; Lloyd, Nick D.; Degenstein, Doug A.] Univ Saskatchewan, Inst Space & Atmospher Studies, Saskatoon, SK S7N 0W0, Canada. [Wiacek, Aldona; Martin, Randall V.] Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS, Canada. [Martin, Randall V.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. RP Wiensz, JT (reprint author), Univ Saskatchewan, Inst Space & Atmospher Studies, Saskatoon, SK S7N 0W0, Canada. EM truitt.wiensz@usask.ca RI Martin, Randall/C-1205-2014 OI Martin, Randall/0000-0003-2632-8402 FU Natural Sciences and Engineering Research Council (Canada); European Space Agency; Sweden (SNSB); Canada (CSA); France (CNES); Finland (Tekes) FX This work was supported by the Canadian Space Agency, the Natural Sciences and Engineering Research Council (Canada) and the European Space Agency. Odin is a Swedish-led satellite project funded jointly by Sweden (SNSB), Canada (CSA), France (CNES) and Finland (Tekes). NR 16 TC 2 Z9 2 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0022-4073 J9 J QUANT SPECTROSC RA JI J. Quant. Spectrosc. Radiat. Transf. PD MAY PY 2012 VL 113 IS 8 BP 582 EP 593 DI 10.1016/j.jqsrt.2012.02.007 PG 12 WC Optics; Spectroscopy SC Optics; Spectroscopy GA 921UT UT WOS:000302504100002 ER PT J AU Bolanos, JA Baeza, JA Hernandez, JE Lira, C Lopez, R AF Bolanos, Juan A. Antonio Baeza, J. Hernandez, Jesus E. Lira, Carlos Lopez, Regulo TI Population dynamics and reproductive output of the non-indigenous crab Charybdis hellerii in the south-eastern Caribbean Sea SO JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM LA English DT Article DE invasive species; size at first maturity; recruitment; sex-ratio; Venezuela ID LIFE-HISTORY; 1ST RECORD; BRACHYURA; DECAPODA; CRUSTACEA; PORTUNIDAE; ATLANTIC; MILNEEDWARDS,A.; COAST; GULF AB Charybdis hellerii is one of several poorly known non-indigenous crabs in the Caribbean. In this study we report on the reproductive dynamic of a shallow subtidal population that invaded Isla Margarita, Venezuela, south-eastern Caribbean Sea > 15 years ago and has persisted in the region up to date. Male and female crabs, both large and small, were found year-round at the study site. The size-frequency distribution indicated a lifespan of 2-3 years. Charybdis hellerii reproduces continuously but with very low intensity during the year. Small individuals (<25 mm carapace length) were uncommon and intermittently found during the study period. Sex-ratio varied between 0.1 and 0.65 (mean +/- SD = of 0.46 +/- 0.14) and did not differ significantly from 1:1 ratio during most of the year. The size of the smallest brooding female was 36.81 mm carapace width (CW). Behavioural size at first maturity (movable abdomen) in males and females was estimated to be 22.39 mm CW (confidence limits: 18.35-24.72) and 37.43 mm CW (35.55-39.09), respectively. Reproductive output, estimated as the ratio of embryo to female body dry mass, varied between 0.052 and 0.084 (0.07 +/- 0.008). Also, reproductive output was size-dependent with large females allocating proportionally less resources to egg production than small females. The reproductive schedule here reported for C. hellerii disagrees with the generalized idea of exotic populations 'thriving' in an environment free of natural enemies (e.g. predators, competitors and diseases). C1 [Bolanos, Juan A.; Hernandez, Jesus E.; Lira, Carlos; Lopez, Regulo] Univ Oriente, Escuela Ciencias Aplicadas Mar, Grp Invest Carcinol, Isla Margarita, Venezuela. [Antonio Baeza, J.] Old Dominion Univ, Norfolk, VA USA. [Antonio Baeza, J.] Smithsonian Marine Stn Ft Pierce, Ft Pierce, FL 34949 USA. [Antonio Baeza, J.] Univ Catolica Norte, Dept Biol Marina, Larrondo 1281, Coquimbo, Chile. RP Baeza, JA (reprint author), Smithsonian Marine Stn Ft Pierce, 701 Seaway Dr, Ft Pierce, FL 34949 USA. EM baezaa@si.edu OI Baeza, Juan Antonio/0000-0002-2573-6773 FU STRI; SMSFP FX J.A.B. acknowledges the support from a STRI Marine Postdoctoral Fellowship and a SMSFP Postdoctoral Fellowship. Sampling was conducted according to Venezuelan federal laws. We appreciate the helpful comments by Angelo Jason Spadaro and Fernando Mantelatto. This is contribution number 850 from the Smithsonian Marine Station at Fort Pierce. NR 32 TC 8 Z9 8 U1 0 U2 13 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA SN 0025-3154 J9 J MAR BIOL ASSOC UK JI J. Mar. Biol. Assoc. U.K. PD MAY PY 2012 VL 92 IS 3 BP 469 EP 474 DI 10.1017/S002531541100052X PG 6 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA 920AS UT WOS:000302373900006 ER PT J AU Sadler, PM Sonnert, G Hazari, Z Tai, R AF Sadler, Philip M. Sonnert, Gerhard Hazari, Zahra Tai, Robert TI Stability and Volatility of STEM Career Interest in High School: A Gender Study SO SCIENCE EDUCATION LA English DT Article ID SCIENCE; WOMEN; CHOICE; EXPECTATIONS; METAANALYSIS; ENGINEERS; MODEL; GIRLS; MATH AB This retrospective cohort study characterizes how interest in science, technology, engineering, mathematics (STEM) careers changes during high school for more than 6,000 students in a representative national sample of 34 two- and four-year colleges taking mandatory college English courses. Overall, large gender differences in career plans were found, with males showing far more interest particularly in engineering, whereas females were more attracted to careers in health and medicine during their high school years. The key factor predicting STEM career interest at the end of high school was interest at the start of high school. There was an additional effect of gender, indicating both a lower retention of STEM career interest among females and a greater difficulty in attracting females to STEM fields during high school. During the high school years, the percentage of males interested in a STEM career remained stable (from 39.5 to 39.7), whereas for females it declined from 15.7 to 12.7. The students' initial specific (disciplinary) career interests were found to influence the stability of their interest in a STEM career, with those interested in physics careers at the start of high school having the highest retention in STEM. (c) 2012 Wiley Periodicals, Inc. Sci Ed 96:411-427, 2012 C1 [Sadler, Philip M.; Sonnert, Gerhard] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Hazari, Zahra] Clemson Univ, Dept Engn & Sci Educ, Clemson, SC 29634 USA. [Hazari, Zahra] Clemson Univ, Dept Math Sci, Clemson, SC 29634 USA. [Tai, Robert] Univ Virginia, Curry Sch Educ, Charlottesville, VA 22903 USA. RP Sadler, PM (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM psadler@cfa.harvard.edu NR 57 TC 56 Z9 56 U1 11 U2 59 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0036-8326 J9 SCI EDUC JI Sci. Educ. PD MAY PY 2012 VL 96 IS 3 BP 411 EP 427 DI 10.1002/sce.21007 PG 17 WC Education & Educational Research SC Education & Educational Research GA 924UI UT WOS:000302716400003 ER PT J AU Clough, GW AF Clough, G. Wayne TI THE GREEN MUSEUM SO SMITHSONIAN LA English DT Editorial Material C1 Smithsonian Inst, Washington, DC 20560 USA. RP Clough, GW (reprint author), Smithsonian Inst, Washington, DC 20560 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SMITHSONIAN ASSOC PI WASHINGTON PA 900 JEFFERSON DR, WASHINGTON, DC 20560 USA SN 0037-7333 J9 SMITHSONIAN JI Smithsonian PD MAY PY 2012 VL 43 IS 2 BP 12 EP 12 PG 1 WC Humanities, Multidisciplinary SC Arts & Humanities - Other Topics GA 126SQ UT WOS:000317641900002 ER PT J AU Lenky, C Eisert, R Oftedal, OT Metcalf, V AF Lenky, Crystal Eisert, Regina Oftedal, Olav T. Metcalf, Victoria TI Proximate composition and energy density of nototheniid and myctophid fish in McMurdo Sound and the Ross Sea, Antarctica SO POLAR BIOLOGY LA English DT Article DE Dissostichus mawsoni; Proximate composition; Nototheniid; Diet; Ross Sea; Weddell seal ID WEDDELL SEALS; MACQUARIE ISLAND; WAX ESTERS; FATTY-ACID; FUR SEALS; FOOD-WEB; LEPTONYCHOTES-WEDDELLII; ECOLOGICAL IMPLICATIONS; MESOPELAGIC FISHES; KERGUELEN ISLANDS AB Nototheniid and myctophid fish are primary prey for marine piscivores, yet little is known about their nutritional value. In this study, we characterized the proximate composition [PC: water, fat (neutral lipids), crude protein (CP) and ash] and energy density (ED; kJ g(-1)) of fifteen fish species from McMurdo Sound and the Ross Sea, Antarctica. We assayed the entire fish for all species except for the large Antarctic toothfish, Dissostichus mawsoni (muscle tissue only). On a wet mass basis (WM), fish were variable in composition: moisture content ranged from 64.9 to 87.3% WM, fat from 0.5 to 17.4% WM, CP from 7.7 to 16.7% WM, ash from 11.2 to 21.0% FFDM (fat-free dry mass), and ED from 2.9 to 10.3 kJ g(-1). Myctophids and pelagic nototheniids such as Pleuragramma antarcticum and D. mawsoni were high in fat content (7-17% WM), while a bathylagid and benthic nototheniids including most Trematomus spp. and Lepidonotothen squamifrons were low in fat (0.5-4% WM). The epibenthic Trematomus species (T. eulepidotus and T. lepidorhinus) were intermediate. Energy density tracked fat content, with highest values in myctophids and pelagic nototheniids. The variation in nutrient and energy density confirms that prey composition must be taken into account when modelling energy and nutrient fluxes within the Antarctic ecosystem. Further analyses of prey collected over a number of different locations and seasons are needed in order to determine how the nutritional value of certain species might affect annual or decadal variation in reproductive success or population size of top predators. C1 [Lenky, Crystal; Eisert, Regina] Univ Canterbury, Christchurch, New Zealand. [Eisert, Regina; Oftedal, Olav T.] Smithsonian Environm Res Ctr, Edgewater, MD 21037 USA. [Metcalf, Victoria] Lincoln Univ, Dept Wine Food & Mol Biosci, Canterbury, New Zealand. RP Lenky, C (reprint author), Univ Canterbury, Private Bag 4800, Christchurch, New Zealand. EM crystal.lenky@pg.canterbury.ac.nz RI Metcalf, Victoria/C-1933-2013; OI Metcalf, Victoria/0000-0002-0833-7965 FU National Science Foundation, Office of Polar Programs [0538592] FX We would like to thank Dr. Gretchen Hofmann (University of California Santa Barbara, Santa Barbara, CA), Dr. Art DeVries (University of Illinois, Urbana-Champaign, IL), and Dr. Matt Pinkerton (National Institute of Water and Atmospheric Research, Wellington, New Zealand) for providing samples. Specimens and data collected by and made available through the New Zealand International Polar Year-Census of Antarctic Marine Life Project are gratefully acknowledged. We would also like to thank Michael Jakubasz (Smithsonian National Zoological Park) for his help with all of the assays, Luis Apiolaza (University of Canterbury) for statistical advice and David Ainley and Graham Worthy for their comments on an earlier version of this manuscript. This manuscript was greatly improved by comments from three anonymous reviewers. This work was supported by the National Science Foundation, Office of Polar Programs grant 0538592 to Oftedal, Eisert and DJ Boness. NR 54 TC 9 Z9 9 U1 3 U2 30 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0722-4060 J9 POLAR BIOL JI Polar Biol. PD MAY PY 2012 VL 35 IS 5 BP 717 EP 724 DI 10.1007/s00300-011-1116-9 PG 8 WC Biodiversity Conservation; Ecology SC Biodiversity & Conservation; Environmental Sciences & Ecology GA 921MB UT WOS:000302480600007 ER PT J AU Sohn, JC Labandeira, C Davis, D Mitter, C AF Sohn, Jae-Cheon Labandeira, Conrad Davis, Donald Mitter, Charles TI An annotated catalog of fossil and subfossil Lepidoptera (Insecta: Holometabola) of the world SO ZOOTAXA LA English DT Article DE Nomenclature; paleobiodiversity; paleontology; plant-insect interactions; taxonomy ID BALTIC AMBER; DOMINICAN AMBER; NORTH-AMERICA; LEAF MINES; FEEDING DAMAGE; NEW-ZEALAND; OAK LEAF; PLANT; EOCENE; MOTH AB In this catalog, we attempt to assemble all fossil records of Lepidoptera described formally or informally in the world literature. A total of 667 records dealing with at least 4,568 specimens have been compiled. They include descriptions of 131 fossil genera and 229 fossil species, as well as 72 extant genera and 21 extant species to which some of these fossils supposedly belong or show superficial similarity. Replacement names of two fossil genera are proposed to avoid homonymy: Baltopsyche Sohn, gen. nov. for Palaeopsyche Sobczyk and Kobbert, 2009 and Netoxena Sohn, gen. nov. for Xena Martins-Neto, 1999. New generic combinations are proposed for: Tortrix? destructus Cockerell, 1916, Tortrix florissantanus Cockerell, 1907, and Tortrix sp. sensu Gravenhorst (1835), all three to Tortricites Kozlov, 1988; Pterophorus oligocenicus Bigot, Nel and Nel, 1986, to Merrifieldia Tutt, 1905; Aporia sp. sensu Branscheid (1969) to Pierites Heer, 1849; Noctua spp. sensu Hope (1836) and Lomnicki (1894), both to Noctuites Heer, 1849. Eleven names improperly proposed for lepidopteran fossils are invalidated: Baltonides roeselliformis Skalski in KosmowskaCeranowicz and Popiolek, 1981; Baltodines Kupryjanowicz, 2001; Barbarothea Scudder, 1890; Lepidopterites Piton, 1936; Palaeozygaena Reiss, 1936; Psamateia calipsa Martins-Neto, 2002; Saxibatinca meyi Skalski in Kristensen and Skalski, 1998; Spatalistiforma submerga Skalski, 1976; Thanatites juvenalis Scudder, 1875; Tortricibaltia diakonoffi Skalski, 1976; and Zygaenites Reiss, 1936. An unnecessary subsequent type designation for Pierites Heer, 1849, is discussed. A total of 129 records include lepidopteran fossils which cannot be placed in any taxonomic rank. There also exist at least 25 fossil records which lack any evidence of the supposed lepidopteran association. Misidentified specimens, including 18 fossil genera, 29 fossil species and 12 unnamed fossils, are excluded from Lepidoptera. All the known lepidopteran fossils are annotated by fossil type, specimen deposition, excavation locality, association with plants when present, and geological age. A bibliographic list of lepidopteran fossils is provided. C1 [Sohn, Jae-Cheon; Labandeira, Conrad; Mitter, Charles] Univ Maryland, Dept Entomol, College Pk, MD 20742 USA. [Sohn, Jae-Cheon; Labandeira, Conrad] Natl Museum Nat Hist, Smithsonian Inst, Dept Paleobiol, Washington, DC 20560 USA. [Davis, Donald] Natl Museum Nat Hist, Smithsonian Inst, Dept Entomol, Washington, DC 20560 USA. RP Sohn, JC (reprint author), Univ Maryland, Dept Entomol, 4112 Plant Sci Bldg, College Pk, MD 20742 USA. EM jsohn@umd.edu; LABANDEC@si.edu; DAVISD@si.edu; cmitter@umd.edu RI Yakovlev, Roman/J-7243-2013 FU U.S. National Science Foundation [0531769] FX We would like to express our cordial appreciation to two anonymous reviewers for critically editing our manuscript and providing valuable information that we had missed. We are very grateful to our colleagues in the Lepidoptera Assembling the Tree of Life project (LepTree) for much useful advice. We especially thank Joaquin Baixeras (University of Valencia, Spain), John Brown (United States Department of Agriculture, Washington DC, USA), Axel Hausmann (Zoological State Collection, Munich, Germany), Masakazu Hayashi (Hoshizaki Green Foundation, Shimane, Japan), Akito Kawahara (University of Florida, USA), David Lees (Natural History Museum, London, United Kingdom), David Smith (retired, United States Department of Agriculture, Washington DC, USA), Torsten Wappler (Steinmann Institut fur Geologie, Universitat Bonn, Germany) and Andreas Zwick (Stuttgart State Museum of Natural History, Germany) for assistance in locating fossil specimens and references, and for comments on fossil taxonomy. We are also indebted to many museum curators, including Martin Gross (Universalmuseum Joanneum, Vienna, Austria), Mathias Harzhauser (Natural History Museum Vienna, Austria), James Hogan (Oxford University Museum of Natural History, United Kingdom), Paul Jeffery (Oxford University Museum of Natural History, United Kingdom), Michael Krings (Bayerische Staatssammlung fur Palaontologie, Munich, Germany), Andreas Kroh (Natural History Museum Vienna, Austria), Christian Neumann (Museum fur Naturkunde, Berlin, Germany), Martin Nose (Bayerische Staatssammlung fur Palaontologie, Munich, Germany), Claire Mellish (Natural History Museum, London, United Kingdom), Philip D. Perkins (Museum of Comparative Zoology, Harvard University, USA), Naomi Pierce (Museum of Comparative Zoology, Harvard University, USA), Alexandr P. Rasnitsyn (Palaeontological Institute, Russian Academy of Sciences, Moscow, Russia), and Irene Zorn (Geological Survey of Austria, Vienna, Austria). We thank Kim Mitter (University of Maryland, College Park, USA) for translating Russian literature, Cynthia Parr (United States Museum of Natural History, Washington DC, USA) and Dana Campbell (University of Maryland, College Park, USA) for managing the online content of our fossil project, and April J. Dinwiddie (Yale University, New Haven, USA) for assistance in assembling raw data. Financial support was provided by the U.S. National Science Foundation's Assembling the Tree of Life program, award number 0531769. This is contribution 244 of the Evolution of Terrestrial Ecosystems consortium of the National Museum of Natural History, in Washington, D.C. NR 459 TC 8 Z9 9 U1 3 U2 4 PU MAGNOLIA PRESS PI AUCKLAND PA PO BOX 41383, AUCKLAND, ST LUKES 1030, NEW ZEALAND SN 1175-5326 EI 1175-5334 J9 ZOOTAXA JI Zootaxa PD APR 30 PY 2012 IS 3286 BP 1 EP 116 PG 116 WC Zoology SC Zoology GA 940HH UT WOS:000303880100001 ER PT J AU Loreau, J Zhang, P Dalgarno, A AF Loreau, Jerome Zhang, Peng Dalgarno, Alexander TI Scattering of nitrogen molecules by silver atoms SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID COUPLED-CLUSTER THEORY; COMPOUND STATE RESONANCES; CONSISTENT BASIS-SETS; GAUSSIAN-BASIS SETS; POLARIZATION PROPAGATOR; HARTREE-FOCK; ENERGIES; GROUP-11; SODIUM; BORON AB We present a quantal study of the rotationally elastic and inelastic scattering of Ag and N-2, with the nitrogen molecule treated as a rigid rotor. The two-dimensional potential energy surface of the AgN2 complex is obtained ab initio by means of the spin unrestricted coupled-cluster method with single, double, and perturbative triple excitations. The global minimum is found to be located at an internuclear distance of 8.13 a(0) and an angle of 127.2 degrees. The long-range part of the potential is constructed from the dynamic electric dipole polarizabilities of Ag and N-2. Elastic, excitation, and relaxation cross sections and rates are calculated for energies between 0.1 and 5000 cm(-1). The momentum transfer cross sections and rates are also computed. Finally, we compare the cross sections for Ag-N-2 and Na-N-2 to explore the possibility of using silver instead of sodium in experimental tests. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3703518] C1 [Loreau, Jerome; Zhang, Peng; Dalgarno, Alexander] Harvard Smithsonian Ctr Astrophys, Inst Theoret Atom Mol & Opt Phys ITAMP, Cambridge, MA 02138 USA. [Zhang, Peng] Duke Univ, Dept Chem, Durham, NC 27708 USA. RP Loreau, J (reprint author), Harvard Smithsonian Ctr Astrophys, Inst Theoret Atom Mol & Opt Phys ITAMP, 60 Garden St, Cambridge, MA 02138 USA. EM jloreau@cfa.harvard.edu OI Loreau, Jerome/0000-0002-6142-1509 FU Belgian American Educational Foundation; Chemical Science, Geoscience, and Bioscience Division of the Office of Basic Energy Science, Office of Science, U.S. Department of Energy FX The authors would like to thank D. Budker for useful discussions as well as J. Mitroy and H. Sadeghpour for providing us with the dynamical electric dipole polarizabilities for the Ag atom. J.L. is supported by a fellowship from the Belgian American Educational Foundation, and the research of A.D. and P.Z. is supported by the Chemical Science, Geoscience, and Bioscience Division of the Office of Basic Energy Science, Office of Science, U.S. Department of Energy. NR 33 TC 4 Z9 4 U1 1 U2 12 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD APR 28 PY 2012 VL 136 IS 16 AR 164305 DI 10.1063/1.3703518 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 936PJ UT WOS:000303602200019 PM 22559480 ER PT J AU McLaughlin, BM Ballance, CP AF McLaughlin, B. M. Ballance, C. P. TI Photoionization cross section calculations for the halogen-like ions Kr+ and Xe+ SO JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS LA English DT Article ID NEUTRON-CAPTURE ELEMENTS; R-MATRIX THEORY; PLANETARY-NEBULAE; 4D PHOTOIONIZATION; ATOMIC IONS; RESONANCES; ABUNDANCES; SPECTRA; PROGRAM; STARS AB Photoionization cross section calculations on the halogen-like ions; Kr+ and Xe+ have been performed for a photon energy range from each ion threshold to 15 eV, using large-scale close-coupling calculations within the Dirac-Coulomb R-matrix approximation. The results from our theoretical work are compared with recent measurements made at the ASTRID merged-beam set-up at the University of Aarhus in Denmark and from the Fourier transform ion cyclotron resonance trap method at the SOLEIL synchrotron radiation facility in Saint-Aubin, France Bizau et al (2011 J. Phys. B: At. Mol. Opt. Phys. 44 055205) and the advanced light source Muller (2012 private communication), Aguliar et al (2012 J. Phys.: Conf. Ser. at press). For each of these complex ions our theoretical cross section results over the photon energy range investigated are seen to be in excellent agreement with experiment. Resonance energy positions and quantum defects of the prominent Rydberg resonances series identified in the spectra are compared with experiment for these complex halogen-like ions. C1 [McLaughlin, B. M.] Queens Univ Belfast, Ctr Theoret Atom Mol & Opt Phys, Sch Math & Phys, Belfast BT7 1NN, Antrim, North Ireland. [McLaughlin, B. M.] Harvard Smithsonian Ctr Astrophys, Inst Theoret Atom & Mol Phys, Cambridge, MA 02138 USA. [Ballance, C. P.] Auburn Univ, Dept Phys, Allison Lab 206, Auburn, AL 36849 USA. RP McLaughlin, BM (reprint author), Queens Univ Belfast, Ctr Theoret Atom Mol & Opt Phys, Sch Math & Phys, David Bates Bldg,7 Coll Pk, Belfast BT7 1NN, Antrim, North Ireland. EM b.mclaughlin@qub.ac.uk; ballance@physics.auburn.edu FU US Department of Energy (DoE) through Auburn University; US National Science Foundation at the Harvard-Smithsonian Center for Astrophysics FX CPB was supported by US Department of Energy (DoE) grants through Auburn University. BMM acknowledges support by the US National Science Foundation through a grant to ITAMP at the Harvard-Smithsonian Center for Astrophysics. We thank Dr Jean-Marc Bizau for providing us with the recent ASTRID/SOLEIL experimental data on these ions and Professor Alfred Mueller for the ALS experimental data. The computational work was carried out at the National Energy Research Scientific Computing Center in Oakland, CA, USA and on the Tera-grid at the National Institute for Computational Sciences (NICS) in Knoxville, TN, USA. NR 36 TC 19 Z9 19 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-4075 EI 1361-6455 J9 J PHYS B-AT MOL OPT JI J. Phys. B-At. Mol. Opt. Phys. PD APR 28 PY 2012 VL 45 IS 8 AR 085701 DI 10.1088/0953-4075/45/8/085701 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 925RL UT WOS:000302778700025 ER PT J AU Schneps, MH Brockmole, JR Sonnert, G Pomplun, M AF Schneps, Matthew H. Brockmole, James R. Sonnert, Gerhard Pomplun, Marc TI History of Reading Struggles Linked to Enhanced Learning in Low Spatial Frequency Scenes SO PLOS ONE LA English DT Article ID REPORT SCALE ASRS; DEVELOPMENTAL DYSLEXIA; WORKING-MEMORY; VISUAL-SEARCH; PERIPHERAL-VISION; CORTICAL DYNAMICS; EYE-MOVEMENTS; ATTENTION; CHILDREN; ADULTS AB People with dyslexia, who face lifelong struggles with reading, exhibit numerous associated low-level sensory deficits including deficits in focal attention. Countering this, studies have shown that struggling readers outperform typical readers in some visual tasks that integrate distributed information across an expanse. Though such abilities would be expected to facilitate scene memory, prior investigations using the contextual cueing paradigm failed to find corresponding advantages in dyslexia. We suggest that these studies were confounded by task-dependent effects exaggerating known focal attention deficits in dyslexia, and that, if natural scenes were used as the context, advantages would emerge. Here, we investigate this hypothesis by comparing college students with histories of severe lifelong reading difficulties (SR) and typical readers (TR) in contexts that vary attention load. We find no differences in contextual-cueing when spatial contexts are letter-like objects, or when contexts are natural scenes. However, the SR group significantly outperforms the TR group when contexts are low-pass filtered natural scenes [F(3, 39) = 3.15, p <.05]. These findings suggest that perception or memory for low spatial frequency components in scenes is enhanced in dyslexia. These findings are important because they suggest strengths for spatial learning in a population otherwise impaired, carrying implications for the education and support of students who face challenges in school. C1 [Schneps, Matthew H.; Sonnert, Gerhard] Harvard Smithsonian Ctr Astrophys, Sci Educ Dept, Cambridge, MA 02138 USA. [Brockmole, James R.] Univ Notre Dame, Dept Psychol, Notre Dame, IN 46556 USA. [Pomplun, Marc] Univ Massachusetts, Dept Comp Sci, Boston, MA 02125 USA. RP Schneps, MH (reprint author), Harvard Smithsonian Ctr Astrophys, Sci Educ Dept, 60 Garden St, Cambridge, MA 02138 USA. EM mschneps@cfa.harvard.edu FU National Science Foundation [HRD-0930962]; George E. Burch Foundation FX This work was supported by National Science Foundation Grant HRD-0930962 (http://www.nsf.gov/awardsearch/showAward.do?AwardNumber = 0930962), and by the George E. Burch Foundation (http://www.si.edu/ofg/) that provided a fellowship to MS. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 88 TC 9 Z9 9 U1 2 U2 18 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA SN 1932-6203 J9 PLOS ONE JI PLoS One PD APR 27 PY 2012 VL 7 IS 4 AR e35724 DI 10.1371/journal.pone.0035724 PG 13 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 959TJ UT WOS:000305336000053 PM 22558210 ER PT J AU Studds, CE DeLuca, WV Baker, ME King, RS Marra, PP AF Studds, Colin E. DeLuca, William V. Baker, Matthew E. King, Ryan S. Marra, Peter P. TI Land Cover and Rainfall Interact to Shape Waterbird Community Composition SO PLOS ONE LA English DT Article ID CHESAPEAKE BAY; COASTAL URBANIZATION; NITROGEN EXPORT; UNITED-STATES; RIVER ESTUARY; MARINE; ABUNDANCE; NUTRIENT; USA; CLIMATE AB Human land cover can degrade estuaries directly through habitat loss and fragmentation or indirectly through nutrient inputs that reduce water quality. Strong precipitation events are occurring more frequently, causing greater hydrological connectivity between watersheds and estuaries. Nutrient enrichment and dissolved oxygen depletion that occur following these events are known to limit populations of benthic macroinvertebrates and commercially harvested species, but the consequences for top consumers such as birds remain largely unknown. We used non-metric multidimensional scaling (MDS) and structural equation modeling (SEM) to understand how land cover and annual variation in rainfall interact to shape waterbird community composition in Chesapeake Bay, USA. The MDS ordination indicated that urban subestuaries shifted from a mixed generalist-specialist community in 2002, a year of severe drought, to generalist-dominated community in 2003, of year of high rainfall. The SEM revealed that this change was concurrent with a sixfold increase in nitrate-N concentration in subestuaries. In the drought year of 2002, waterbird community composition depended only on the direct effect of urban development in watersheds. In the wet year of 2003, community composition depended both on this direct effect and on indirect effects associated with high nitrate-N inputs to northern parts of the Bay, particularly in urban subestuaries. Our findings suggest that increased runoff during periods of high rainfall can depress water quality enough to alter the composition of estuarine waterbird communities, and that this effect is compounded in subestuaries dominated by urban development. Estuarine restoration programs often chart progress by monitoring stressors and indicators, but rarely assess multivariate relationships among them. Estuarine management planning could be improved by tracking the structure of relationships among land cover, water quality, and waterbirds. Unraveling these complex relationships may help managers identify and mitigate ecological thresholds that occur with increasing human land cover. C1 [Studds, Colin E.; Marra, Peter P.] Smithsonian Inst, Natl Zool Pk, Migratory Bird Ctr, Smithsonian Conservat Biol Inst, Washington, DC 20008 USA. [DeLuca, William V.] Univ Massachusetts, Dept Environm Conservat, Amherst, MA 01003 USA. [Baker, Matthew E.] Univ Maryland, Dept Geog & Environm Syst, Baltimore, MD 21201 USA. [King, Ryan S.] Baylor Univ, Dept Biol, Ctr Reservoir & Aquat Syst, Waco, TX 76798 USA. RP Studds, CE (reprint author), Univ Queensland, Sch Biol Sci, Brisbane, Qld, Australia. EM c.studds@uq.edu.au RI Studds, Colin/C-3701-2012; Baker, Matthew/I-2839-2014 OI Baker, Matthew/0000-0001-5069-0204 FU United States Environmental Protection Agency's (USEPA) Science to Achieve Results (STAR) Estuarine and Great Lakes (EaGLe) program [R-82868401]; USEPA FX This study was funded by a grant from the United States Environmental Protection Agency's (USEPA) Science to Achieve Results (STAR) Estuarine and Great Lakes (EaGLe) program to the Atlantic Slope Consortium, USEPA Agreement #R-82868401. Although the research described in this article was funded by the USEPA, it was not subjected to the Agency's peer and policy review and therefore does not necessarily reflect the views of the Agency and no official endorsement should be inferred. The funders has no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 57 TC 7 Z9 7 U1 6 U2 55 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA SN 1932-6203 J9 PLOS ONE JI PLoS One PD APR 27 PY 2012 VL 7 IS 4 AR e35969 DI 10.1371/journal.pone.0035969 PG 10 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 959TJ UT WOS:000305336000093 PM 22558286 ER PT J AU Van Soest, RWM Boury-Esnault, N Vacelet, J Dohrmann, M Erpenbeck, D De Voogd, NJ Santodomingo, N Vanhoorne, B Kelly, M Hooper, JNA AF Van Soest, Rob W. M. Boury-Esnault, Nicole Vacelet, Jean Dohrmann, Martin Erpenbeck, Dirk De Voogd, Nicole J. Santodomingo, Nadiezhda Vanhoorne, Bart Kelly, Michelle Hooper, John N. A. TI Global Diversity of Sponges (Porifera) SO PLOS ONE LA English DT Review ID CANADIAN CONTINENTAL-SHELF; NORTH-EAST ATLANTIC; GREAT-BARRIER-REEF; CARNIVOROUS SPONGES; CALCAREOUS SPONGES; MEDITERRANEAN SEA; ASBESTOPLUMA-HYPOGEA; PHYLOGENETIC-SIGNAL; MOLECULAR PHYLOGENY; CRYPTIC SPECIATION AB With the completion of a single unified classification, the Systema Porifera (SP) and subsequent development of an online species database, the World Porifera Database (WPD), we are now equipped to provide a first comprehensive picture of the global biodiversity of the Porifera. An introductory overview of the four classes of the Porifera is followed by a description of the structure of our main source of data for this paper, the WPD. From this we extracted numbers of all 'known' sponges to date: the number of valid Recent sponges is established at 8,553, with the vast majority, 83%, belonging to the class Demospongiae. We also mapped for the first time the species richness of a comprehensive set of marine ecoregions of the world, data also extracted from the WPD. Perhaps not surprisingly, these distributions appear to show a strong bias towards collection and taxonomy efforts. Only when species richness is accumulated into large marine realms does a pattern emerge that is also recognized in many other marine animal groups: high numbers in tropical regions, lesser numbers in the colder parts of the world oceans. Preliminary similarity analysis of a matrix of species and marine ecoregions extracted from the WPD failed to yield a consistent hierarchical pattern of ecoregions into marine provinces. Global sponge diversity information is mostly generated in regional projects and resources: results obtained demonstrate that regional approaches to analytical biogeography are at present more likely to achieve insights into the biogeographic history of sponges than a global perspective, which appears currently too ambitious. We also review information on invasive sponges that might well have some influence on distribution patterns of the future. C1 [Van Soest, Rob W. M.; De Voogd, Nicole J.] Netherlands Ctr Biodivers Naturalis, Leiden, Netherlands. [Boury-Esnault, Nicole; Vacelet, Jean] Aix Marseille Univ, Ctr Oceanol Marseille, CNRS, DIMAR,UMR 6540, Marseille, France. [Dohrmann, Martin] Smithsonian Inst, Natl Museum Nat Hist, Dept Invertebrate Zool, Washington, DC 20560 USA. [Erpenbeck, Dirk] Univ Munich, Dept Earth & Environm Sci, Munich, Germany. [Erpenbeck, Dirk] Univ Munich, GeoBioctr LMU, Munich, Germany. [Santodomingo, Nadiezhda] Nat Hist Museum, Dept Palaeontol, London SW7 5BD, England. [Vanhoorne, Bart] Flanders Marine Inst VLIZ, Oostende, Belgium. [Kelly, Michelle] Natl Inst Water & Atmospher Res Ltd, Natl Ctr Aquat Biodivers & Biosecur, Auckland, New Zealand. [Hooper, John N. A.] Queensland Museum, Brisbane, Qld, Australia. [Hooper, John N. A.] Griffiths Univ, Eskitis Inst Cell & Mol Therapies, Gold Coast, Qld, Australia. RP Van Soest, RWM (reprint author), Netherlands Ctr Biodivers Naturalis, Leiden, Netherlands. EM rob.vansoest@ncbnaturalis.nl RI de Voogd, Nicole/I-9280-2012; OI de Voogd, Nicole/0000-0002-7985-5604; Hooper, John/0000-0003-1722-5954 NR 171 TC 109 Z9 111 U1 6 U2 97 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA SN 1932-6203 J9 PLOS ONE JI PLoS One PD APR 27 PY 2012 VL 7 IS 4 AR e35105 DI 10.1371/journal.pone.0035105 PG 23 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 959TJ UT WOS:000305336000024 PM 22558119 ER PT J AU Mah, CL Blake, DB AF Mah, Christopher L. Blake, Daniel B. TI Global Diversity and Phylogeny of the Asteroidea (Echinodermata) SO PLOS ONE LA English DT Review ID SEA STARS LEPTASTERIAS; OF-THORNS STARFISH; INTERTIDAL COMMUNITY STRUCTURE; STICHASTER-AUSTRALIS VERRILL; SOFT-SEDIMENT ASSEMBLAGES; HIGH-DISPERSAL STARFISH; PHOTOPERIODIC REGULATION; NEW-ZEALAND; FEEDING-BEHAVIOR; ASTERIAS-AMURENSIS AB Members of the Asteroidea (phylum Echinodermata), popularly known as starfish or sea stars, are ecologically important and diverse members of marine ecosystems in all of the world's oceans. We present a comprehensive overview of diversity and phylogeny as they have figured into the evolution of the Asteroidea from Paleozoic to the living fauna. Living post-Paleozoic asteroids, the Neoasteroidea, are morphologically separate from those in the Paleozoic. Early Paleozoic asteroid faunas were diverse and displayed morphology that foreshadowed later living taxa. Preservation presents significant difficulties, but fossil occurrence and current accounts suggests a diverse Paleozoic fauna, which underwent extinction around the Permian-Triassic interval was followed by re-diversification of at least one surviving lineage. Ongoing phylogenetic classification debates include the status of the Paxillosida and the Concentricycloidea. Fossil and molecular evidence has been and continues to be part of the ongoing evolution of asteroid phylogenetic research. The modern lineages of asteroids include the Valvatacea, the Forcipulatacea, the Spinlosida, and the Velatida. We present an overview of diversity in these taxa, as well as brief notes on broader significance, ecology, and functional morphology of each. Although much asteroid taxonomy is stable, many new taxa remain to be discovered with many new species currently awaiting description. The Goniasteridae is currently one of the most diverse families within the Asteroidea. New data from molecular phylogenetics and the advent of global biodiversity databases, such as the World Asteroidea Database (http://www.marinespecies.org/Asteroidea/) present important new springboards for understanding the global biodiversity and evolution of asteroids. C1 [Mah, Christopher L.] Smithsonian Inst, Natl Museum Nat Hist, Dept Invertebrate Zool, Washington, DC 20560 USA. [Mah, Christopher L.] Louisiana State Univ, Dept Biol Sci, Baton Rouge, LA 70803 USA. [Blake, Daniel B.] Univ Illinois, Dept Geol, Urbana, IL USA. RP Mah, CL (reprint author), Smithsonian Inst, Natl Museum Nat Hist, Dept Invertebrate Zool, Washington, DC 20560 USA. EM mahch@si.edu FU National Science Foundation [1036358] FX This publication has been supported by National Science Foundation 1036358 Assembling the Echinoderm Tree of Life grant to Louisiana State University. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 275 TC 23 Z9 23 U1 5 U2 83 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA SN 1932-6203 J9 PLOS ONE JI PLoS One PD APR 27 PY 2012 VL 7 IS 4 AR e35644 DI 10.1371/journal.pone.0035644 PG 22 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 959TJ UT WOS:000305336000043 PM 22563389 ER PT J AU Arnold, T Mealey, C Leahey, H Miller, AW Hall-Spencer, JM Milazzo, M Maers, K AF Arnold, Thomas Mealey, Christopher Leahey, Hannah Miller, A. Whitman Hall-Spencer, Jason M. Milazzo, Marco Maers, Kelly TI Ocean Acidification and the Loss of Phenolic Substances in Marine Plants SO PLOS ONE LA English DT Article ID EELGRASS ZOSTERA-MARINA; SEAGRASS POSIDONIA-OCEANICA; CARBON-DIOXIDE; ELEVATED CO2; HERBIVORE INTERACTIONS; INORGANIC CARBON; WASTING DISEASE; LABYRINTHULA-ZOSTERAE; THALASSIA-TESTUDINUM; PROTEIN COMPETITION AB Rising atmospheric CO2 often triggers the production of plant phenolics, including many that serve as herbivore deterrents, digestion reducers, antimicrobials, or ultraviolet sunscreens. Such responses are predicted by popular models of plant defense, especially resource availability models which link carbon availability to phenolic biosynthesis. CO2 availability is also increasing in the oceans, where anthropogenic emissions cause ocean acidification, decreasing seawater pH and shifting the carbonate system towards further CO2 enrichment. Such conditions tend to increase seagrass productivity but may also increase rates of grazing on these marine plants. Here we show that high CO2 / low pH conditions of OA decrease, rather than increase, concentrations of phenolic protective substances in seagrasses and eurysaline marine plants. We observed a loss of simple and polymeric phenolics in the seagrass Cymodocea nodosa near a volcanic CO2 vent on the Island of Vulcano, Italy, where pH values decreased from 8.1 to 7.3 and pCO(2) concentrations increased ten-fold. We observed similar responses in two estuarine species, Ruppia maritima and Potamogeton perfoliatus, in in situ Free-Ocean-Carbon-Enrichment experiments conducted in tributaries of the Chesapeake Bay, USA. These responses are strikingly different than those exhibited by terrestrial plants. The loss of phenolic substances may explain the higher-than-usual rates of grazing observed near undersea CO2 vents and suggests that ocean acidification may alter coastal carbon fluxes by affecting rates of decomposition, grazing, and disease. Our observations temper recent predictions that seagrasses would necessarily be "winners" in a high CO2 world. C1 [Arnold, Thomas; Mealey, Christopher; Leahey, Hannah; Maers, Kelly] Dickinson Coll, Dept Biol Sci, Carlisle, PA 17013 USA. [Arnold, Thomas; Miller, A. Whitman] Smithsonian Environm Res Ctr, Edgewater, MD 21037 USA. [Hall-Spencer, Jason M.] Univ Plymouth, Sch Marine Sci & Engn, Plymouth PL4 8AA, Devon, England. [Milazzo, Marco] Univ Palermo, Dipartimento Sci Terra & Mare, Palermo, Italy. RP Arnold, T (reprint author), Dickinson Coll, Dept Biol Sci, Carlisle, PA 17013 USA. EM arnoldt@dickinson.edu RI Milazzo, Marco/F-8596-2012 OI Milazzo, Marco/0000-0002-2202-0542 FU NASA [09-GCCE-0139]; Smithsonian Institution; EU [265103]; Dickinson College FX This work was funded by an award from NASA (09-GCCE-0139), a senior postdoctoral fellowship award from the Smithsonian Institution to T. M. A., the EU 'Mediterranean Sea Acidification under a changing climate' project (MedSeA; grant agreement 265103), and Research and Development grants to T. M. A. from Dickinson College. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 80 TC 55 Z9 55 U1 3 U2 113 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA SN 1932-6203 J9 PLOS ONE JI PLoS One PD APR 25 PY 2012 VL 7 IS 4 AR e35107 DI 10.1371/journal.pone.0035107 PG 10 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 959VP UT WOS:000305345200025 PM 22558120 ER PT J AU Wilson, LB Koval, A Szabo, A Breneman, A Cattell, CA Goetz, K Kellogg, PJ Kersten, K Kasper, JC Maruca, BA Pulupa, M AF Wilson, L. B., III Koval, A. Szabo, A. Breneman, A. Cattell, C. A. Goetz, K. Kellogg, P. J. Kersten, K. Kasper, J. C. Maruca, B. A. Pulupa, M. TI Observations of electromagnetic whistler precursors at supercritical interplanetary shocks SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID EARTHS BOW SHOCK; WIND SPACECRAFT; PERPENDICULAR SHOCKS; MACH NUMBER; SOLAR-WIND; PLASMA; WAVES; SIMULATIONS; DISSIPATION AB We present observations of electromagnetic precursor waves, identified as whistler mode waves, at supercritical interplanetary shocks using the Wind search coil magnetometer. The precursors propagate obliquely with respect to the local magnetic field, shock normal vector, solar wind velocity, and they are not phase standing structures. All are right-hand polarized with respect to the magnetic field ( spacecraft frame), and all but one are right-hand polarized with respect to the shock normal vector in the normal incidence frame. They have rest frame frequencies f(ci) < f << f(ce) and wave numbers 0.02 less than or similar to k rho(ce) less than or similar to 5.0. Particle distributions show signatures of specularly reflected gyrating ions, which may be a source of free energy for the observed modes. In one event, we simultaneously observe perpendicular ion heating and parallel electron acceleration, consistent with wave heating/acceleration due to these waves. Although the precursors can have delta B/B-o as large as 2, fluxgate magnetometer measurements show relatively laminar shock transitions in three of the four events. Citation: Wilson, L. B., III, et al. (2012), Observations of electromagnetic whistler precursors at supercritical interplanetary shocks, Geophys. Res. Lett., 39, L08109, doi:10.1029/2012GL051581. C1 [Wilson, L. B., III; Koval, A.; Szabo, A.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20707 USA. [Koval, A.] Univ Maryland Baltimore Cty, Goddard Planetary Heliophys Inst, Baltimore, MD 21228 USA. [Breneman, A.; Cattell, C. A.; Goetz, K.; Kellogg, P. J.; Kersten, K.] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA. [Kasper, J. C.; Maruca, B. A.] Harvard Univ, Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Pulupa, M.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA. RP Wilson, LB (reprint author), NASA, Goddard Space Flight Ctr, Code 672, Greenbelt, MD 20707 USA. EM lynn.b.wilsoniii@gmail.com RI Kasper, Justin/D-1152-2010; Wilson III, Lynn/D-4425-2012; OI Kasper, Justin/0000-0002-7077-930X; Wilson III, Lynn/0000-0002-4313-1970; Pulupa, Marc/0000-0002-1573-7457; Cattell, Cynthia/0000-0002-3805-320X FU NESSF [NNX07AU72H, NNX07AI05G]; Leonard Burlaga/Arctowski Medal Fellowship; NASA [NNX10AT09G] FX We thank S. D. Bale, J. R. Wygant, and R. Lysak for useful discussions of the physics involved in our study. All Wind spacecraft data were produced under Wind MO&DA grants. This research was partially supported by NESSF grant NNX07AU72H, grant NNX07AI05G, the Leonard Burlaga/Arctowski Medal Fellowship, and UCB work sponsored by NASA grant NNX10AT09G. NR 29 TC 22 Z9 22 U1 2 U2 11 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD APR 25 PY 2012 VL 39 AR L08109 DI 10.1029/2012GL051581 PG 6 WC Geosciences, Multidisciplinary SC Geology GA 933AF UT WOS:000303330900005 ER PT J AU Osborn, KJ Kuhnz, LA Priede, IG Urata, M Gebruk, AV Holland, ND AF Osborn, Karen J. Kuhnz, Linda A. Priede, Imants G. Urata, Makoto Gebruk, Andrey V. Holland, Nicholas D. TI Diversification of acorn worms (Hemichordata, Enteropneusta) revealed in the deep sea SO PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES LA English DT Article DE deep sea; epibenthic; demersal; Enteropneusta; Hemichordata; Torquaratoridae ID EASTERN PACIFIC; FLOOR; GENUS; HARRIMANIIDAE; PHYLOGENY; EVOLUTION; REVISION; INSIGHTS AB Enteropneusts (phylum Hemichordata), although studied extensively because of their close relationship to chordates, have long been considered shallow-water, burrowing animals. The present paper more than doubles the number of enteropneust species recorded in the deep sea based on high-resolution imaging and sampling with remotely operated vehicles. We provide direct evidence that some enteropneusts are highly mobile-using changes in posture and currents to drift between feeding sites-and are prominent members of deep, epibenthic communities. In addition, we provide ecological information for each species. We also show that despite their great morphological diversity, most deep-living enteropneusts form a single clade (the rediagnosed family Torquaratoridae) on the basis of rDNA sequences and morphology of the proboscis skeleton and stomochord. The phylogenetic position of the torquaratorids indicates that the group, after evolving from near-shore ancestors, radiated extensively in the deep sea. C1 [Osborn, Karen J.] Univ Calif Santa Cruz, Inst Marine Sci, Santa Cruz, CA 95064 USA. [Kuhnz, Linda A.] Monterey Bay Aquarium Res Inst, Moss Landing, CA 95039 USA. [Priede, Imants G.] Univ Aberdeen, Oceanlab, Aberdeen AB41 6AA, Scotland. [Urata, Makoto] Hiroshima Univ, Marine Biol Lab, Onomichi 7220073, Japan. [Gebruk, Andrey V.] Russian Acad Sci, PP Shirshov Oceanol Inst, Moscow 117997, Russia. [Holland, Nicholas D.] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA. RP Osborn, KJ (reprint author), Smithsonian Inst, Dept Invertebrate Zool, Natl Museum Nat Hist, Washington, DC 20013 USA. EM osbornk@si.edu OI Osborn, Karen/0000-0002-4226-9257 FU David and Lucile Packard Foundation; UK Natural Environment Research Council FX We thank Dave Clague, Steve Haddock, Bob Vrijenhoek, Lynne Christianson, Shannon Johnson, Lonny Lundsten, Ken Smith, Antonina Rogacheva, Bruce Robison, Mike Vecchione, Susumu Ohtsuka and Sadaharu Iwasaki for contributions to the project. Steve Hammond, Verena Tunnicliffe and the NOAA Office of Ocean Exploration and Research provided access to images from INDEX 2010: Indonesia-USA Deep-Sea Exploration of the Sangihe Talaud Region expedition. We also thank the pilots and crews of the abovementioned ROVs and RV Western Flyer, RRS James Cook and Okeanos Explorer. The Pacific collections were funded by the David and Lucile Packard Foundation and the North Atlantic collections by the UK Natural Environment Research Council. NR 38 TC 26 Z9 27 U1 0 U2 18 PU ROYAL SOC PI LONDON PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND SN 0962-8452 EI 1471-2954 J9 P ROY SOC B-BIOL SCI JI Proc. R. Soc. B-Biol. Sci. PD APR 22 PY 2012 VL 279 IS 1733 BP 1646 EP 1654 DI 10.1098/rspb.2011.1916 PG 9 WC Biology; Ecology; Evolutionary Biology SC Life Sciences & Biomedicine - Other Topics; Environmental Sciences & Ecology; Evolutionary Biology GA 906GM UT WOS:000301332900025 PM 22090391 ER PT J AU Pazourek, R Feist, J Nagele, S Burgdorfer, J AF Pazourek, Renate Feist, Johannes Nagele, Stefan Burgdoerfer, Joachim TI Attosecond Streaking of Correlated Two-Electron Transitions in Helium SO PHYSICAL REVIEW LETTERS LA English DT Article ID DEPENDENT SCHRODINGER-EQUATION; PHASE-SHIFT; TIME; SPECTROSCOPY; DELAY AB We present fully ab initio simulations of attosecond streaking for ionization of helium accompanied by shakeup of the second electron. This process represents a prototypical case for strongly correlated electron dynamics on the attosecond time scale. We show that streaking spectroscopy can provide detailed information on the Eisenbud-Wigner-Smith time delay as well as on the infrared-field dressing of both bound and continuum states. We find a novel contribution to the streaking delay that stems from the interplay of electron-electron and infrared-field interactions in the exit channel. We quantify all the contributions with attosecond precision and provide a benchmark for future experiments. C1 [Pazourek, Renate; Nagele, Stefan; Burgdoerfer, Joachim] Vienna Univ Technol, Inst Theoret Phys, A-1040 Vienna, Austria. [Feist, Johannes] Harvard Smithsonian Ctr Astrophys, ITAMP, Cambridge, MA 02138 USA. RP Pazourek, R (reprint author), Vienna Univ Technol, Inst Theoret Phys, A-1040 Vienna, Austria. EM renate.pazourek@tuwien.ac.at; stefan.nagele@tuwien.ac.at RI Nagele, Stefan/E-6938-2011; Feist, Johannes/J-7394-2012 OI Nagele, Stefan/0000-0003-1213-0294; Feist, Johannes/0000-0002-7972-0646 FU FWF-Austria [P21141-N16, P23359-N16]; COST Action [CM0702]; National Science Foundation through TeraGrid/XSEDE resources [TG-PHY090031]; TU Vienna Doctoral Program Functional Matter; NSF; [SFB 041] FX This work was supported by the FWF-Austria, Grant No. P21141-N16, P23359-N16, and SFB 041 (VICOM), the COST Action CM0702 (CUSPFEL), and in part by the National Science Foundation through TeraGrid/XSEDE resources provided by NICS and TACC under Grant TG-PHY090031. The computational results presented have also been achieved in part using the Vienna Scientific Cluster (VSC). R. P. acknowledges support by the TU Vienna Doctoral Program Functional Matter and J.F. acknowledges support by the NSF through a grant to ITAMP. NR 36 TC 54 Z9 54 U1 1 U2 30 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD APR 20 PY 2012 VL 108 IS 16 AR 163001 DI 10.1103/PhysRevLett.108.163001 PG 5 WC Physics, Multidisciplinary SC Physics GA 929MY UT WOS:000303070600006 PM 22680715 ER PT J AU Bromley, BC Kenyon, SJ Geller, MJ Brown, WR AF Bromley, Benjamin C. Kenyon, Scott J. Geller, Margaret J. Brown, Warren R. TI BINARY DISRUPTION BY MASSIVE BLACK HOLES: HYPERVELOCITY STARS, S STARS, AND TIDAL DISRUPTION EVENTS SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE Galaxy: halo; Galaxy: kinematics and dynamics; Galaxy: stellar content; Galaxy: structure; stars: early-type ID SAGITTARIUS-A-ASTERISK; N-BODY SIMULATIONS; GALACTIC-CENTER; YOUNG STARS; GALAXY; FLARES; VELOCITIES; EJECTION; HISTORY; CLUSTER AB We examine whether disrupted binary stars can fuel black hole growth. In this mechanism, tidal disruption produces a single hypervelocity star (HVS) ejected at high velocity and a former companion star bound to the black hole. After a cluster of bound stars forms, orbital diffusion allows the black hole to accrete stars by tidal disruption at a rate comparable to the capture rate. In the Milky Way, HVSs and the S star cluster imply similar rates of 10(-5) to 10(-3) yr(-1) for binary disruption. These rates are consistent with estimates for the tidal disruption rate in nearby galaxies and imply significant black hole growth from disrupted binaries on 10 Gyr timescales. C1 [Bromley, Benjamin C.] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA. [Kenyon, Scott J.; Geller, Margaret J.; Brown, Warren R.] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. RP Bromley, BC (reprint author), Univ Utah, Dept Phys & Astron, 115 S 1400 E,Rm 201, Salt Lake City, UT 84112 USA. EM bromley@physics.utah.edu; skenyon@cfa.harvard.edu; mgeller@cfa.harvard.edu; wbrown@cfa.harvard.edu OI Kenyon, Scott/0000-0003-0214-609X NR 50 TC 17 Z9 17 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD APR 20 PY 2012 VL 749 IS 2 AR L42 DI 10.1088/2041-8205/749/2/L42 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 923SD UT WOS:000302638300026 ER PT J AU Wilner, DJ Andrews, SM MacGregor, MA Hughes, AM AF Wilner, David J. Andrews, Sean M. MacGregor, Meredith A. Hughes, A. Meredith TI A RESOLVED MILLIMETER EMISSION BELT IN THE AU Mic DEBRIS DISK SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE circumstellar matter; planet-disk interactions; stars: individual (AU Microscopii); submillimeter: planetary systems ID MICROSCOPII CIRCUMSTELLAR DISK; NEARBY YOUNG STARS; BETA-PICTORIS; DUST DYNAMICS; PLANETS; SEARCH; EVOLUTION; DISCOVERY; PROFILES; DENSITY AB We present imaging observations at 1.3 mm of the debris disk surrounding the nearby M-type flare star AU Mic with beam size 3 '' (30 AU) from the Submillimeter Array. These data reveal a belt of thermal dust emission surrounding the star with the same edge-on geometry as the more extended scattered light disk detected at optical wavelengths. Simple modeling indicates a central radius of similar to 35 AU for the emission belt. This location is consistent with the reservoir of planetesimals previously invoked to explain the shape of the scattered light surface brightness profile through size-dependent dust dynamics. The identification of this belt further strengthens the kinship between the debris disks around AU Mic and its more massive sister star beta Pic, members of the same similar to 10 Myr old moving group. C1 [Wilner, David J.; Andrews, Sean M.; MacGregor, Meredith A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Hughes, A. Meredith] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. RP Wilner, DJ (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. OI MacGregor, Meredith/0000-0001-7891-8143 FU Miller Institute for Basic Research in Science FX We thank James Graham for providing the Hubble Space Telescope image in Figure 1. A.M.H. is supported by a fellowship from the Miller Institute for Basic Research in Science. NR 34 TC 17 Z9 17 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD APR 20 PY 2012 VL 749 IS 2 AR L27 DI 10.1088/2041-8205/749/2/L27 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 923SD UT WOS:000302638300011 ER PT J AU Appelquist, T Babich, R Brower, RC Buchoff, MI Cheng, M Clark, MA Cohen, SD Fleming, GT Kiskis, J Lin, MF Neil, ET Osborn, JC Rebbi, C Schaich, D Syritsyn, S Voronov, G Vranas, P Wasem, J AF Appelquist, T. Babich, R. Brower, R. C. Buchoff, M. I. Cheng, M. Clark, M. A. Cohen, S. D. Fleming, G. T. Kiskis, J. Lin, M. F. Neil, E. T. Osborn, J. C. Rebbi, C. Schaich, D. Syritsyn, S. Voronov, G. Vranas, P. Wasem, J. TI WW scattering parameters via pseudoscalar phase shifts SO PHYSICAL REVIEW D LA English DT Article ID CHIRAL PERTURBATION-THEORY; FLAVORS; LATTICE; SYSTEM AB Using domain-wall lattice simulations, we study pseudoscalar-pseudoscalar scattering in the maximal isospin channel for an SU(3) gauge theory with two and six fermion flavors in the fundamental representation. This calculation of the S-wave scattering length is related to the next-to-leading order corrections to WW scattering in technicolor models through the low-energy coefficients of the chiral Lagrangian. While two- and six-flavor scattering lengths are similar for a fixed ratio of the pseudoscalar mass to its decay constant, six-flavor scattering shows a somewhat less repulsive next-to-leading order interaction than its two-flavor counterpart. Estimates are made for the WW scattering parameters and the plausibility of detection is discussed. C1 [Appelquist, T.; Fleming, G. T.; Lin, M. F.; Voronov, G.] Yale Univ, Dept Phys, Sloane Lab, New Haven, CT 06520 USA. [Babich, R.; Brower, R. C.; Rebbi, C.; Schaich, D.] Boston Univ, Dept Phys, Boston, MA 02215 USA. [Buchoff, M. I.; Cheng, M.; Vranas, P.; Wasem, J.] Lawrence Livermore Natl Lab, Phys Sci Directorate, Livermore, CA 94550 USA. [Clark, M. A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Cohen, S. D.] Univ Washington, Dept Phys, Seattle, WA 98195 USA. [Kiskis, J.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. [Neil, E. T.] Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA. [Osborn, J. C.] Argonne Leadership Comp Facil, Argonne, IL 60439 USA. [Schaich, D.] Univ Colorado, Dept Phys, Boulder, CO 80309 USA. [Syritsyn, S.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Appelquist, T (reprint author), Yale Univ, Dept Phys, Sloane Lab, New Haven, CT 06520 USA. RI Schaich, David/J-6644-2013; Fleming, George/L-6614-2013; OI Schaich, David/0000-0002-9826-2951; Fleming, George/0000-0002-4987-7167; Cohen, Saul/0000-0001-6804-3320 FU NNSA; Office of Science of the U. S. Department of Energy; U. S. National Science Foundation; United States Department of Energy [DE-AC02-07CH11359] FX This work was performed with the aid of Chroma [36] and CPS. We thank Tom Luu, Andre Walker-Loud, and Brian Tiburzi for helpful insight throughout this work. We thank the LLNL Multiprogrammatic and Institutional Computing program for time on the BlueGene/L supercomputer and on the Hera, Atlas, and Zeus computing clusters along with funding from LDRD 10-ERD-033. This work was supported by the NNSA and Office of Science of the U. S. Department of Energy, and by the U. S. National Science Foundation. Fermilab is operated by Fermi Research Alliance, LLC, under Contract No. DE-AC02-07CH11359 with the United States Department of Energy. NR 36 TC 6 Z9 6 U1 0 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD APR 19 PY 2012 VL 85 IS 7 AR 074505 DI 10.1103/PhysRevD.85.074505 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 928PB UT WOS:000302994100005 ER PT J AU Machida, RJ Kweskin, M Knowlton, N AF Machida, Ryuji J. Kweskin, Matthew Knowlton, Nancy TI PCR Primers for Metazoan Mitochondrial 12S Ribosomal DNA Sequences SO PLOS ONE LA English DT Article ID RNA GENE; DIVERSITY; BIOSPHERE; REGIONS AB Background: Assessment of the biodiversity of communities of small organisms is most readily done using PCR-based analysis of environmental samples consisting of mixtures of individuals. Known as metagenetics, this approach has transformed understanding of microbial communities and is beginning to be applied to metazoans as well. Unlike microbial studies, where analysis of the 16S ribosomal DNA sequence is standard, the best gene for metazoan metagenetics is less clear. In this study we designed a set of PCR primers for the mitochondrial 12S ribosomal DNA sequence based on 64 complete mitochondrial genomes and then tested their efficacy. Methodology/Principal Findings: A total of the 64 complete mitochondrial genome sequences representing all metazoan classes available in GenBank were downloaded using the NCBI Taxonomy Browser. Alignment of sequences was performed for the excised mitochondrial 12S ribosomal DNA sequences, and conserved regions were identified for all 64 mitochondrial genomes. These regions were used to design a primer pair that flanks a more variable region in the gene. Then all of the complete metazoan mitochondrial genomes available in NCBI's Organelle Genome Resources database were used to determine the percentage of taxa that would likely be amplified using these primers. Results suggest that these primers will amplify target sequences for many metazoans. Conclusions/Significance: Newly designed 12S ribosomal DNA primers have considerable potential for metazoan metagenetic analysis because of their ability to amplify sequences from many metazoans. C1 [Machida, Ryuji J.; Kweskin, Matthew; Knowlton, Nancy] Smithsonian Inst, Natl Museum Nat Hist, Washington, DC 20560 USA. RP Machida, RJ (reprint author), Acad Sinica, Biodivers Res Ctr, Taipei 115, Taiwan. EM ryujimachida@gate.sinica.edu.tw FU Alfred P. Sloan Foundation; Sant Chair of Marine Science FX Financial support was provided by the Alfred P. Sloan Foundation and the Sant Chair of Marine Science discretionary funds. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 25 TC 12 Z9 12 U1 0 U2 11 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA SN 1932-6203 J9 PLOS ONE JI PLoS One PD APR 19 PY 2012 VL 7 IS 4 AR e35887 DI 10.1371/journal.pone.0035887 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 959TL UT WOS:000305336200070 PM 22536450 ER PT J AU Montes, C Bayona, G Cardona, A Buchs, DM Silva, CA Moron, S Hoyos, N Ramirez, DA Jaramillo, CA Valencia, V AF Montes, Camilo Bayona, G. Cardona, A. Buchs, D. M. Silva, C. A. Moron, S. Hoyos, N. Ramirez, D. A. Jaramillo, C. A. Valencia, V. TI Arc-continent collision and orocline formation: Closing of the Central American seaway SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH LA English DT Article ID SOUTHERN CENTRAL-AMERICA; LARGE IGNEOUS PROVINCE; PANAMA DEFORMED BELT; EL-VALLE VOLCANO; COSTA-RICA; PALEOMAGNETIC DATA; CARIBBEAN PLATE; TECTONIC EVOLUTION; WESTERN COLOMBIA; EASTERN PANAMA AB Closure of the Central American seaway was a local tectonic event with potentially global biotic and environmental repercussions. We report geochronological (six U/Pb LA-ICP-MS zircon ages) and geochemical (19 XRF and ICP-MS analyses) data from the Isthmus of Panama that allow definition of a distinctive succession of plateau sequences to subduction-related protoarc to arc volcaniclastic rocks intruded by Late Cretaceous to middle Eocene intermediate plutonic rocks (67.6 +/- 1.4 Ma to 41.1 +/- 0.7 Ma). Paleomagnetic analyses (24 sites, 192 cores) in this same belt reveal large counterclockwise vertical-axis rotations (70.9 degrees +/- 6.7 degrees), and moderate clockwise rotations (between 40 degrees +/- 4.1 degrees and 56.2 degrees +/- 11.1 degrees) on either side of an east-west trending fault at the apex of the Isthmus (Rio Gatun Fault), consistent with Isthmus curvature. An Oligocene-Miocene arc crosscuts the older, deformed and segmented arc sequences, and shows no significant vertical-axis rotation or deformation. There are three main stages of deformation: 1) left-lateral, strike-slip offset of the arc (similar to 100 km), and counterclockwise vertical-axis rotation of western arc segments between 38 and 28 Ma; 2) clockwise rotation of central arc segments between 28 and 25 Ma; and 3) orocline tightening after 25 Ma. When this reconstruction is placed in a global plate tectonic framework, and published exhumation data is added, the Central American seaway disappears at 15 Ma, suggesting that by the time of northern hemisphere glaciation, deep-water circulation had long been severed in Central America. C1 [Montes, Camilo; Cardona, A.; Hoyos, N.; Ramirez, D. A.; Jaramillo, C. A.] Smithsonian Trop Res Inst, Balboa, Panama. [Montes, Camilo] Univ Los Andes, Bogota, Colombia. [Bayona, G.] Corp Geol Ares, Bogota, Colombia. [Cardona, A.] Univ Nacl Colombia, Medellin, Colombia. [Buchs, D. M.] Helmholtz Ctr Ocean Res Kiel, GEOMAR, Res Div Dynam Ocean Floor 4, D-24148 Kiel, Germany. [Silva, C. A.] Oklahoma State Univ, Dept Geol, Stillwater, OK 74078 USA. [Moron, S.] Univ Minnesota, Dept Geol, Minneapolis, MN 55455 USA. [Valencia, V.] Washington State Univ, Dept Earth & Environm Sci, Pullman, WA 99164 USA. RP Montes, C (reprint author), Smithsonian Trop Res Inst, Box 0843-03092, Balboa, Panama. EM cmontes@uniandes.edu.co OI Ramirez, Diego/0000-0001-6018-3273; Buchs, David/0000-0001-8866-8125; Montes, Camilo/0000-0002-3553-0787 FU Panama Canal Authority [SAA-199520-KRP]; Senacyt [SUM-07-001, EST010-080 A]; U.S. National Science Foundation (NSF) [0966884]; Colciencias; Swiss National Science Foundation [PBLA2-122660]; NSF EAR [0824299]; National Geographic; Smithsonian Institution; Ricardo Perez S.A. FX Project supported by Panama Canal Authority contract SAA-199520-KRP; Mark Tupper; Senacyt grants SUM-07-001 and EST010-080 A; U.S. National Science Foundation (NSF) grant 0966884 (OISE, EAR, DRL); Colciencias; Swiss National Science Foundation (project PBLA2-122660); NSF EAR 0824299; National Geographic; Smithsonian Institution; and Ricardo Perez S.A. Thanks to J.E.T. Channell, K. Huang, S. Zapata, R. Arculus, C. Allen, A. Christy and U. Troitzsch. Access and collection permits were granted by Panama Canal Authority and Ministerio de Industria y Comercio. We are grateful to all participants of February's 2010 joint workshop IGCP 546 "Subduction Zones of the Caribbean" and 574 "Bending and Bent Orogens, and Continental Ribbons." Thanks to G. Worner, J. Pindell, S. Johnson, P. Molnar, R. Somoza, and P. Mann for their reviews and comments to our manuscript as it evolved. NR 99 TC 63 Z9 65 U1 3 U2 57 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-9313 EI 2169-9356 J9 J GEOPHYS RES-SOL EA JI J. Geophys. Res.-Solid Earth PD APR 18 PY 2012 VL 117 AR B04105 DI 10.1029/2011JB008959 PG 25 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 930DG UT WOS:000303116500001 ER PT J AU Chen, HX Sun, SC Sundberg, P Ren, WC Norenburg, JL AF Chen, Hai-Xia Sun, Shi-Chun Sundberg, Per Ren, Wei-Cheng Norenburg, Jon L. TI A comparative study of nemertean complete mitochondrial genomes, including two new ones for Nectonemertes cf. mirabilis and Zygeupolia rubens, may elucidate the fundamental pattern for the phylum Nemertea SO BMC GENOMICS LA English DT Article DE MtDNA; Nemertea; Nectonemertes mirabilis; Zygeupolia rubens; Phylogeny; Gene rearrangement ID MULTIPLE SEQUENCE ALIGNMENT; 18S RDNA SEQUENCES; TRANSFER-RNA GENES; PHYLOGENETIC POSITION; DNA-SEQUENCE; SECONDARY STRUCTURES; TANDEM REPEATS; MIXED MODELS; EVOLUTION; ORDER AB Background: The mitochondrial genome is important for studying genome evolution as well as reconstructing the phylogeny of organisms. Complete mitochondrial genome sequences have been reported for more than 2200 metazoans, mainly vertebrates and arthropods. To date, from a total of about 1275 described nemertean species, only three complete and two partial mitochondrial DNA sequences from nemerteans have been published. Here, we report the entire mitochondrial genomes for two more nemertean species: Nectonemertes cf. mirabilis and Zygeupolia rubens. Results: The sizes of the entire mitochondrial genomes are 15365 bp for N. cf. mirabilis and 15513 bp for Z. rubens. Each circular genome contains 37 genes and an AT-rich non-coding region, and overall nucleotide composition is AT-rich. In both species, there is significant strand asymmetry in the distribution of nucleotides, with the coding strand being richer in T than A and in G than C. The AT-rich non-coding regions of the two genomes have some repeat sequences and stem-loop structures, both of which may be associated with the initiation of replication or transcription. The 22 tRNAs show variable substitution patterns in nemerteans, with higher sequence conservation in genes located on the H strand. Gene arrangement of N. cf. mirabilis is identical to that of Paranemertes cf. peregrina, both of which are Hoplonemertea, while that of Z. rubens is the same as in Lineus viridis, both of which are Heteronemertea. Comparison of the gene arrangements and phylogenomic analysis based on concatenated nucleotide sequences of the 12 mitochondrial protein-coding genes revealed that species with closer relationships share more identical gene blocks. Conclusion: The two new mitochondrial genomes share many features, including gene contents, with other known nemertean mitochondrial genomes. The tRNA families display a composite substitution pathway. Gene order comparison to the proposed ground pattern of Bilateria and some lophotrochozoans suggests that the nemertean ancestral mitochondrial gene order most closely resembles the heteronemertean type. Phylogenetic analysis proposes a sister-group relationship between Hetero- and Hoplonemertea, which supports one of two recent alternative hypotheses of nemertean phylogeny. C1 [Norenburg, Jon L.] Smithsonian Inst, Natl Museum Nat Hist, Dept Invertebrate Zool, Washington, DC 20560 USA. [Chen, Hai-Xia; Sundberg, Per] Univ Gothenburg, Dept Biol & Environm Sci, SE-40530 Gothenburg, Sweden. [Chen, Hai-Xia; Sun, Shi-Chun] Ocean Univ China, Inst Evolut & Marine Biodivers, Qingdao 266003, Peoples R China. [Ren, Wei-Cheng] Univ Gothenburg, Sahlgrenska Acad, Dept Rheumatol & Inflammat Res, SE-40530 Gothenburg, Sweden. RP Norenburg, JL (reprint author), Smithsonian Inst, Natl Museum Nat Hist, Dept Invertebrate Zool, Washington, DC 20560 USA. EM norenburgj@si.edu RI Norenburg, Jon/K-3481-2015 OI Norenburg, Jon/0000-0001-7776-1527 FU National Natural Science Foundation of China [30970333]; Swedish Research Council; Smithsonian Institution Scholarly Studies, Research Opportunities, and Marine Science Network; Smithsonian Marine Station at Fort Pierce; US National Science Foundation FX This work was supported by the National Natural Science Foundation of China (to SCS, grant no. 30970333,), the Swedish Research Council (to PS), Smithsonian Institution Scholarly Studies, Research Opportunities, and Marine Science Network awards (to JLN) and represents contribution 878 of the Smithsonian Marine Station at Fort Pierce. JLN is grateful to James Childress (UCSB) and his support from the US National Science Foundation for the opportunity to collect living Nectonemertes cf. mirabilis. NR 82 TC 11 Z9 11 U1 1 U2 19 PU BIOMED CENTRAL LTD PI LONDON PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND SN 1471-2164 J9 BMC GENOMICS JI BMC Genomics PD APR 17 PY 2012 VL 13 AR 139 DI 10.1186/1471-2164-13-139 PG 18 WC Biotechnology & Applied Microbiology; Genetics & Heredity SC Biotechnology & Applied Microbiology; Genetics & Heredity GA 955GO UT WOS:000305005300001 PM 22507536 ER EF