Infrared spectroscopy of comet 81P/Wild 2 samples returned by Stardust

Keller, Lindsay P. and Bajt, Sasa and Baratta, Giuseppe A. and Borg, Janet and Bradley, John P. and Brownlee, Donald E. and Busemann, Henner and Brucato, John R. and Burchell, Mark J. and Colangeli, Luigi and d'Hendecourt, Louis and Djouadi, Zahia and Ferrini, Gianluca and Flynn, George J. and Franchi, Ian A. and Fries, Marc and Grady, Monica M. and Graham, Giles A. and Grossemy, Faustine and Kearsley, Anton T. and Matrajt, Graciela and Nakamura-Messenger, Keiko and Mennella, Vito and Nittler, Larry R. and Palumbo, Maria E. and Stadermann, Frank J. and Tsou, Peter and Rotundi, Alessandra and Sandford, Scott A. and Snead, Christopher J. and Steele, Andrew and Wooden, Diane and Zolensky, Michael E. (2006) Infrared spectroscopy of comet 81P/Wild 2 samples returned by Stardust. Science, 314 (5806). pp. 1728-1731. ISSN 0036-8075. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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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.

Item Type: Article
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: Mark Burchell
Date Deposited: 02 Sep 2008 13:35
Last Modified: 18 Jul 2014 08:16
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