Isotopic systematics of presolar silicon carbide from the Orgueil (CI) chondrite - Implications for solar system formation and stellar nucleosynthesis

Details Isotopic systematics of presolar silicon carbide from the Orgueil (CI) chondrite - Implications for solar system formation and stellar nucleosynthesis Isotopic systematics of presolar silicon carbide from the Orgueil (CI) chondrite - Implications for solar system formation and stellar nucleosynthesis

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997gecoa..61.5117h&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 61, p. 5117

Other

55

Solar System Evolution, Chondrites, Silicon Carbides, Star Formation, Nuclear Fusion, Murchison Meteorite, Meteoritic Composition

Scientific paper

This paper reports on a detailed study of 140 individual SiC grains and 22 SiC aggregates from the Orgueil (CI) carbonaceous chondrite. The objectives of the study were (1) to find out if the SiC in Orgueil is the same as that in Murchison, (2) to investigate whether the Groups observed in Murchison L-series SiC are represented in a large population of grains from another meteorite, (3) to look for isotopic and compositional variations in SiC grains as a function of grain size and to extend the measurements of individual grains to smaller grains, (4) to measure many elements in individual grains, each of which is a sample of a single parent star, in an attempt to understand in more detail the nucleosynthetic processes that took place in that star, (5) to measure elements that had not previously been measured in presolar SiC in order to test some of the ideas about stellar nucleosynthesis proposed in the literature, (6) to attempt to establish firmer links between the properties of individual SiC grains and the properties of bulk SiC samples, and (7) to get some basic information about the SiC aggregates. The data presented here provide new information on all of these topics.

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