Isotopic Compositions of Comentary Matter Returned by Stardust
McKeegan, Kevin D; Aleon, Jerome; Bradley, John P; Brownlee, Donald C; Busemann, Henner; Butterworth, Anna; Chaussidon, Marc; Fallon, Stewart; Floss, Christine; Gilmour, Jamie; Gounelle, Matthieu; Graham, Giles A; Guan, Yunbin; Heck, Philipp; Hoppe, Peter; Hutcheon, Ian D; Huth, Joachim; Ishii, Hope; Ito, Motoo; Jacobsen, Stein; Kearsley, Anton T; Leshin, Laurie A; Liu, Ming-chang; Lyon, Ian; Marhas, Kukjeet; Marty, Bernard; Matrajt, Graciela; Meibom, Anders; Messenger, Scott; Mostefaoui, Smail; Mukhopadhyay, Sujoy; Nakamura-Messenger, Keiko; Nittler, Larry R; Palma, Russ; Pepin, Robert; Papanastassiou, Dimitri; Robert, Francois; Schlutter, Dennis; Snead, Christopher J; Stadermann, Frank J; Stroud, Rhonda; Tsou, Peter; Westphal, Andrew J; Young, Edward D; Ziegler, Karen; Zimmerman, Laurent; Zinner, Ernst
Hydrogen, carbon, nitrogen, and oxygen isotopic compositions are heterogeneous among comet 81P/Wild 2 particle fragments; however, extreme isotopic anomalies are rare, indicating that the comet is not a pristine aggregate of presolar materials. Nonterrestrial nitrogen and neon isotope ratios suggest that indigenous organic matter and highly volatile materials were successfully collected. Except for a single17O-enriched circumstellar stardust grain, silicate and oxide minerals have oxygen...[Show more]
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