The Preliminary Examination of Organics in the Returned Stardust Samples from Comet Wild
نویسندگان
چکیده
FROM COMET WILD 2. S. A. Sandford, J. Aleon, C. Alexander, A. Butterworth, S. J. Clemett, G. Cody, G.Cooper, J. P. Dworkin, G. J. Flynn, M. K. Gilles, D. P. Glavin, C. Jacobsen, G. Matrajt, F. Robert, M. K. Spencer, T. Stephan, A. Westphal, S. Wirick, and R. N. Zare, NASA Ames Research Center, Glenn T. Seaborg Institute, Carnegie Institution, University of California at Berkeley, NASA Johnson Space Center, NASA Goddard Space Flight Center, SUNY Plattsburgh, Lawrence Berkeley National Laboratory, SUNY Stony Brook, University of Washington, Muséum National d’Histoire Naturelle, Stanford University, Universität Münster, Institut für Planetologie
منابع مشابه
Variety of Organic Matter in Stardust Return Samples from Comet 81p/wild 2
Introduction: The Stardust mission captured dust particles from comet 81P/Wild 2 and returned them to Earth. Since this material has been cryogenically stored within the comet for billions of years, the Star-dust samples represent early nebular condensates and some presolar material, identified by anomalous isotopic fractionation outside the range of solar values. Carbonaceous matter has been i...
متن کاملResponse to Comment on “ Organics Captured from Comet 81 P / Wild 2 by the Stardust Spacecraft ”
In Sandford et al. (1), we reported that organics found in samples returned by the Stardust spacecraft to Earth from Comet 81P/Wild 2 show a heterogeneous and unequilibrated distribution in both abundance and composition. Portions of the organics show similarities to those in meteorites and interplanetary dust particles (IDPs), but the entire suite of returned organics is more diverse and varie...
متن کاملOrganics captured from comet 81P/Wild 2 by the Stardust spacecraft.
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 compou...
متن کاملComment on "Organics captured from comet 81P/Wild 2 by the Stardust spacecraft".
Sandford et al. (Reports, 15 December 2006, p. 1720) reported on organic compounds captured from Comet 81P/Wild 2 by the Stardust spacecraft. We emphasize the difficulty in assigning the origin of compounds detected diffusely along particle impact tracks and show that rapid heating of aerogel that has never been exposed to cometary particle capture can generate complex aromatic molecules from l...
متن کاملCarbon XANES Data from Six Aerogel Picokeystones Cut From the Top and Bottom Sides of the Stardust
Introduction: Great care and a large effort was made to minimize the amount of organic matter contained within the flight aerogel used to collect Comet 81P/Wild 2 samples [1]. Even so, by the very nature of the production process and silica aerogel’s affinity for volatile organics keeping silica aerogel free from organics is a monumental task. Silica aerogel from three production batches was fl...
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تاریخ انتشار 2006