Organics Captured from Comet 81P/Wild 2 by the Stardust Spacecraft
Author:
Sandford Scott A.12345, Aléon Jérôme12345, Alexander Conel M. O'D.12345, Araki Tohru12345, Bajt Sas̆a12345, Baratta Giuseppe A.12345, Borg Janet12345, Bradley John P.12345, Brownlee Donald E.12345, Brucato John R.12345, Burchell Mark J.12345, Busemann Henner12345, Butterworth Anna12345, Clemett Simon J.12345, Cody George12345, Colangeli Luigi12345, Cooper George12345, D'Hendecourt Louis12345, Djouadi Zahia12345, Dworkin Jason P.12345, Ferrini Gianluca12345, Fleckenstein Holger12345, Flynn George J.12345, Franchi Ian A.12345, Fries Marc12345, Gilles Mary K.12345, Glavin Daniel P.12345, Gounelle Matthieu12345, Grossemy Faustine12345, Jacobsen Chris12345, Keller Lindsay P.12345, Kilcoyne A. L. David12345, Leitner Jan12345, Matrajt Graciela12345, Meibom Anders12345, Mennella Vito12345, Mostefaoui Smail12345, Nittler Larry R.12345, Palumbo Maria E.12345, Papanastassiou Dimitri A.12345, Robert François12345, Rotundi Alessandra12345, Snead Christopher J.12345, Spencer Maegan K.12345, Stadermann Frank J.12345, Steele Andrew12345, Stephan Thomas12345, Tsou Peter12345, Tyliszczak Tolek12345, Westphal Andrew J.12345, Wirick Sue12345, Wopenka Brigitte12345, Yabuta Hikaru12345, Zare Richard N.12345, Zolensky Michael E.12345
Affiliation:
1. Astrophysics Branch, NASA-Ames Research Center, Moffett Field, CA 94035, USA. 2. Glenn T. Seaborg Institute, Lawrence Livermore National Laboratory, Livermore, CA 94550 USA. 3. Centre de Recherches Pétrographiques et Géochimiques, Vandoeuvre-les-Nancy, France. 4. Department of Terrestrial Magnetism, Carnegie Institution, Washington, DC 20015–1305, USA. 5. Department of Physics, North Carolina State University, Raleigh, NC 27695, USA.
Abstract
Organics found in comet 81P/Wild 2 samples show a heterogeneous and unequilibrated distribution in abundance and composition. Some organics are similar, but not identical, to those in interplanetary dust particles and carbonaceous meteorites. A class of aromatic-poor organic material is also present. The organics are rich in oxygen and nitrogen compared with meteoritic organics. Aromatic compounds are present, but the samples tend to be relatively poorer in aromatics than are meteorites and interplanetary dust particles. The presence of deuterium and nitrogen-15 excesses suggest that some organics have an interstellar/protostellar heritage. Although the variable extent of modification of these materials by impact capture is not yet fully constrained, a diverse suite of organic compounds is present and identifiable within the returned samples.
Publisher
American Association for the Advancement of Science (AAAS)
Subject
Multidisciplinary
Cited by
515 articles.
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