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Organics captured from comet 81P/Wild 2 by the Stardust spacecraft

Sandford, Scott A.; Aleon, Jérôme; Alexander, Conel M. O'D.; Araki, Tohru; Bajt, Saa; Baratta, Giuseppe A.; Borg, Janet; Bradley, John P.; Brownlee, Donald E.; Brucato, John R.; Burchell, Mark J.; Busemann, Henner; Butterworth, Anna; Clemett, Simon J.; Cody, George; Colangeli, Luigi; Cooper, George; D'Hendecourt, Louis; Djouadi, Zahia; Dworkin, Jason P.; Ferrini, Gianluca; Fleckenstein, Holger; Flynn, George J.; Franchi, Ian A. and et al (2006). Organics captured from comet 81P/Wild 2 by the Stardust spacecraft. Science, 314(5806) pp. 1720–1724.

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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.

Item Type: Journal Item
ISSN: 1095-9203
Keywords: interplanetary dust particles; diffuse interstellar-medium; raman-spectroscopy; ice analogs; molecules; matter; identification; constraints; chondrites; meteorites
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 6724
Depositing User: Astrid Peterkin
Date Deposited: 08 Feb 2007
Last Modified: 07 Dec 2018 09:01
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