Huss, G. R. and Nichols, R. H., Jr. and Wasserburg, G. J.
(1995)
Nitrogen Isotopes in Silicon Carbide: Stellar Nucleosynthesis?
Meteoritics, 30
(5).
p. 523.
ISSN 0026-1114.
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Abstract
Nitrogen in presolar SiC varies over a wide range of concentrations and is typically ^(14)N-rich relative to solar N, consistent with ^(15)N being consumed during CNO processing in stellar envelopes [e.g., 1]. Although C is also heavily processed in the envelopes [1], no clear isotopic correlation exists between C and N [e.g., 2], making N compositions difficult to interpret. Although the same general N features are seen in SiC from many meteorites, clear differences between meteorites have also been observed. In particular, Murchison SiC appears to have systematically higher ^(15)N/^(14)N ratios than Orgueil SiC [2,3]. Among ISN-poor SiC grains for both meteorites, ^(15)N/^(14)N and ^(28)Si/^(l4)N exhibit a positive correlation (Fig. 1).
Item Type: | Article |
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Additional Information: | © 1995 Meteoritical Society. Supported by NASA NAG-3040. Div. Contrib. #5560 (904). |
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Funders: | Funding Agency | Grant Number |
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NASA | NAG-3040 |
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Other Numbering System: | Other Numbering System Name | Other Numbering System ID |
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Caltech Division of Geological and Planetary Sciences | 5560 | Lunatic Asylum Lab | 904 |
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Issue or Number: | 5 |
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Record Number: | CaltechAUTHORS:20131218-105845677 |
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Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20131218-105845677 |
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Official Citation: | Nitrogen Isotopes in SiC: Stellar Nucleosynthesis?
Huss, G. R., Nichols, R. H., Jr., & Wasserburg, G. J. Meteoritics, vol. 30, no. 5, page 523 |
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Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
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ID Code: | 43063 |
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Collection: | CaltechAUTHORS |
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Deposited By: |
Ruth Sustaita
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Deposited On: | 18 Dec 2013 21:19 |
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Last Modified: | 09 Mar 2020 13:19 |
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