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presolar sic of type a+b: grains of an enigmatic originN, Al, and Si isotopic ratios differ between presolar SiC grains of type A ( C-12/C-13 < 3.5) and type B (3.5 < C-12/C-13 < 10). J and CH stars are promising sources but the lack of astronomical data and theoretical models limit the identification of these sources.
Document ID
Document Type
Conference Paper
Amari, S.
(Washington Univ. Saint Louis, MO United States)
Nittler, L. R.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Zinner, E.
(Washington Univ. Saint Louis, MO United States)
Lewis, R. S.
(Chicago Univ. Chicago, IL United States)
Date Acquired
August 19, 2013
Publication Date
March 1, 2000
Publication Information
Publication: Lunar and Planetary Science XXXI
Subject Category
Lunar and Planetary Science and Exploration
Distribution Limits
Work of the US Gov. Public Use Permitted.

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IDRelationTitle20000080557Analytic PrimaryLunar and Planetary Science XXXI