On the astrophysical interpretation of isotope anomalies in meteoritic SiC grains
Abstract
Meteoritic silicon carbide grains, formed in the winds from carbon stars, contain noble gases and other species whose elemental and isotopic abundances are a probe of stellar nucleosynthesis. Theoretical models of carbon stars can explain a variety of measured abundances, in particular the range of krypton isotope ratios and the excess 22Ne found in the grains.
- Publication:
-
Nature
- Pub Date:
- November 1990
- DOI:
- 10.1038/348298a0
- Bibcode:
- 1990Natur.348..298G
- Keywords:
-
- Carbon Stars;
- Interstellar Matter;
- Isotopes;
- Meteoritic Composition;
- Meteoroids;
- Silicon Carbides;
- Abundance;
- Astronomical Models;
- Chemical Composition;
- Cosmic Dust;
- Interstellar Gas;
- Stellar Winds;
- Astrophysics