Infrared Spectroscopy of Comet 81P/Wild 2 Samples Returned by Stardust
Author:
Keller Lindsay P.12345, Bajt Sas̆a12345, Baratta Giuseppe A.12345, Borg Janet12345, Bradley John P.12345, Brownlee Don E.12345, Busemann Henner12345, Brucato John R.12345, Burchell Mark12345, Colangeli Luigi12345, d'Hendecourt Louis12345, Djouadi Zahia12345, Ferrini Gianluca12345, Flynn George12345, Franchi Ian A.12345, Fries Marc12345, Grady Monica M.12345, Graham Giles A.12345, Grossemy Faustine12345, Kearsley Anton12345, Matrajt Graciela12345, Nakamura-Messenger Keiko12345, Mennella Vito12345, Nittler Larry12345, Palumbo Maria E.12345, Stadermann Frank J.12345, Tsou Peter12345, Rotundi Alessandra12345, Sandford Scott A.12345, Snead Christopher12345, Steele Andrew12345, Wooden Diane12345, Zolensky Mike12345
Affiliation:
1. Astromaterials Research and Exploration Science Directorate, Mail Code KR, NASA-Johnson Space Center, Houston, TX 77058, USA. 2. Institute for Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA. 3. Istituto Nazionale di Astrofisica (INAF)–Osservatorio Astrofisico di Catania, Via Santa Sofia 78, 95123 Catania, Italy. 4. Institut d'Astrophysique Spatiale, 91405 Orsay Cedex, France. 5. Department of Astronomy, University of Washington, Seattle, WA 98195, USA.
Abstract
Infrared spectra of material captured from comet 81P/Wild 2 by the Stardust spacecraft reveal indigenous aliphatic hydrocarbons similar to those in interplanetary dust particles thought to be derived from comets, but with longer chain lengths than those observed in the diffuse interstellar medium. Similarly, the Stardust samples contain abundant amorphous silicates in addition to crystalline silicates such as olivine and pyroxene. The presence of crystalline silicates in Wild 2 is consistent with mixing of solar system and interstellar matter. No hydrous silicates or carbonate minerals were detected, which suggests a lack of aqueous processing of Wild 2 dust.
Publisher
American Association for the Advancement of Science (AAAS)
Subject
Multidisciplinary
Reference34 articles.
1. M. J. Mumma, P. R. Weissman, S. A. Stern, In Protostars and Planets III, E. H. Levy, J. I. Lunine, M. S. Matthews, Eds. (Univ. of Arizona Press, Tucson, AZ, 1993), pp. 1172–1252. 2. J. D. Bregmanet al., Astron. Astrophys.187, 616 (1987). 3. J. D. Bregmanet al., Astron. Astrophys.334, 1044 (1988). 4. The identification of crystalline olivine in cometary silicates 5. F. J. Molster, L. B. F. M. Waters, in Astromineralogy, Lecture Notes in Physics, T. K. Henning, Ed. (Springer, Berlin, 2003), pp. 121–170.
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