Elemental Compositions of Comet 81P/Wild 2 Samples Collected by Stardust
Author:
Flynn George J.12345, Bleuet Pierre12345, Borg Janet12345, Bradley John P.12345, Brenker Frank E.12345, Brennan Sean12345, Bridges John12345, Brownlee Don E.12345, Bullock Emma S.12345, Burghammer Manfred12345, Clark Benton C.12345, Dai Zu Rong12345, Daghlian Charles P.12345, Djouadi Zahia12345, Fakra Sirine12345, Ferroir Tristan12345, Floss Christine12345, Franchi Ian A.12345, Gainsforth Zack12345, Gallien Jean-Paul12345, Gillet Philippe12345, Grant Patrick G.12345, Graham Giles A.12345, Green Simon F.12345, Grossemy Faustine12345, Heck Philipp R.12345, Herzog Gregory F.12345, Hoppe Peter12345, HoÌrz Friedrich12345, Huth Joachim12345, Ignatyev Konstantin12345, Ishii Hope A.12345, Janssens Koen12345, Joswiak David12345, Kearsley Anton T.12345, Khodja Hicham12345, Lanzirotti Antonio12345, Leitner Jan12345, Lemelle Laurence12345, Leroux Hugues12345, Luening Katharina12345, MacPherson Glenn J.12345, Marhas Kuljeet K.12345, Marcus Matthew A.12345, Matrajt Graciela12345, Nakamura Tomoki12345, Nakamura-Messenger Keiko12345, Nakano Tsukasa12345, Newville Matthew12345, Papanastassiou Dimitri A.12345, Pianetta Piero12345, Rao William12345, Riekel Christian12345, Rietmeijer Frans J. M.12345, Rost Detlef12345, Schwandt Craig S.12345, See Thomas H.12345, Sheffield-Parker Julie12345, Simionovici Alexandre12345, Sitnitsky Ilona12345, Snead Christopher J.12345, Stadermann Frank J.12345, Stephan Thomas12345, Stroud Rhonda M.12345, Susini Jean12345, Suzuki Yoshio12345, Sutton Stephen R.12345, Taylor Susan12345, Teslich Nick12345, Troadec D.12345, Tsou Peter12345, Tsuchiyama Akira12345, Uesugi Kentaro12345, Vekemans Bart12345, Vicenzi Edward P.12345, Vincze Laszlo12345, Westphal Andrew J.12345, Wozniakiewicz Penelope12345, Zinner Ernst12345, Zolensky Michael E.12345
Affiliation:
1. Department of Physics, State University of New York at Plattsburgh, 101 Broad Street, Plattsburgh, NY 12901, USA. 2. European Synchrotron Radiation Facility, Grenoble, France. 3. Institut d'Astrophysique Spatiale, Orsay, France. 4. Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA. 5. Institut fuÌr Mineralogy, Johann Wolfgang Goethe-UniversitaÌt, Frankfurt, Germany.
Abstract
We measured the elemental compositions of material from 23 particles in aerogel and from residue in seven craters in aluminum foil that was collected during passage of the Stardust spacecraft through the coma of comet 81P/Wild 2. These particles are chemically heterogeneous at the largest size scale analyzed (â¼180 ng). The mean elemental composition of this Wild 2 material is consistent with the CI meteorite composition, which is thought to represent the bulk composition of the solar system, for the elements Mg, Si, Mn, Fe, and Ni to 35%, and for Ca and Ti to 60%. The elements Cu, Zn, and Ga appear enriched in this Wild 2 material, which suggests that the CI meteorites may not represent the solar system composition for these moderately volatile minor elements.
Publisher
American Association for the Advancement of Science (AAAS)
Subject
Multidisciplinary
Reference19 articles.
1. P. Tsouet al., J. Geophys. Res.109, E12S01 (2004). 2. Aerogel keystones: Extraction of complete hypervelocity impact events from aerogel collectors 3. G. J. Flynn, F. HoÌrz, S. Bajt, S. R. Sutton, Lunar Planet. Sci.XXVII, 369 (1996). 4. See the supporting material on Science Online. 5. Solar System Abundances and Condensation Temperatures of the Elements
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