| Literature DB >> 17170293 |
Lindsay P Keller1, Sasa Bajt, Giuseppe A Baratta, Janet Borg, John P Bradley, Don E Brownlee, Henner Busemann, John R Brucato, Mark Burchell, Luigi Colangeli, Louis d'Hendecourt, Zahia Djouadi, Gianluca Ferrini, George Flynn, Ian A Franchi, Marc Fries, Monica M Grady, Giles A Graham, Faustine Grossemy, Anton Kearsley, Graciela Matrajt, Keiko Nakamura-Messenger, Vito Mennella, Larry Nittler, Maria E Palumbo, Frank J Stadermann, Peter Tsou, Alessandra Rotundi, Scott A Sandford, Christopher Snead, Andrew Steele, Diane Wooden, Mike Zolensky.
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.Entities:
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Year: 2006 PMID： 17170293 DOI： 10.1126/science.1135796
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728