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Title: Infrared Spectrocopy of Comet 81P/Wild 2 Samples Returned by Stardust

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.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL) National Synchrotron Light Source
Sponsoring Org.:
Doe - Office Of Science
OSTI Identifier:
929825
Report Number(s):
BNL-80382-2008-JA
Journal ID: ISSN 0193-4511; SCEHDK; TRN: US200822%%902
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Journal Name:
Science
Additional Journal Information:
Journal Volume: 314; Journal ID: ISSN 0193-4511
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; COMETS; SAMPLING; DUSTS; HYDROCARBONS; INFRARED SPECTRA; SILICATES; SOLAR SYSTEM; national synchrotron light source

Citation Formats

Keller, L, Bajt, S, Baratta, G, Borg, J, Bradley, J, Brownlee, D, Busemann, H, Brucato, J, Burchell, M, and et al. Infrared Spectrocopy of Comet 81P/Wild 2 Samples Returned by Stardust. United States: N. p., 2006. Web. doi:10.1126/science.1135796.
Keller, L, Bajt, S, Baratta, G, Borg, J, Bradley, J, Brownlee, D, Busemann, H, Brucato, J, Burchell, M, & et al. Infrared Spectrocopy of Comet 81P/Wild 2 Samples Returned by Stardust. United States. doi:10.1126/science.1135796.
Keller, L, Bajt, S, Baratta, G, Borg, J, Bradley, J, Brownlee, D, Busemann, H, Brucato, J, Burchell, M, and et al. Sun . "Infrared Spectrocopy of Comet 81P/Wild 2 Samples Returned by Stardust". United States. doi:10.1126/science.1135796.
@article{osti_929825,
title = {Infrared Spectrocopy of Comet 81P/Wild 2 Samples Returned by Stardust},
author = {Keller, L and Bajt, S and Baratta, G and Borg, J and Bradley, J and Brownlee, D and Busemann, H and Brucato, J and Burchell, M and et al.},
abstractNote = {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.},
doi = {10.1126/science.1135796},
journal = {Science},
issn = {0193-4511},
number = ,
volume = 314,
place = {United States},
year = {2006},
month = {1}
}