Abundance characteristic and synthesis scenario of the galactic chemical elements (II): on the isotopic anomalies of solar system.

Details Abundance characteristic and synthesis scenario of the galactic chemical elements (II): on the isotopic anomalies of solar system. Abundance characteristic and synthesis scenario of the galactic chemical elements (II): on the isotopic anomalies of solar system.

Mar 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999pabei..17...80c&link_type=abstract

Prog. Astron., Vol. 17, No. 1, p. 80 - 92

Astronomy and Astrophysics

Astronomy

Solar System: Isotopic Composition, Solar System: Formation, Presolar Nebula: Grains

Scientific paper

The isotopic composition of the solar system is the base for studying the origin and evolution of the solar system. The present study reviewed the abundance distribution of extinct radionuclides in the solar system and the proposed interpretations: (1) self-contamination of the protosolar cloud by supernovae; (2) contamination by a passing AGB star and (3) high-flux cosmic-ray spallation in the protosolar cloud. Isotopic compositions of presolar grains in primitive meteorites suggest that low density graphite grains and the rare X type SiC grains come from supernovae, yet AGB stars and red gaint stars are stellar sources for SiC grains and corundum grains. Compositions of isotopically anomalous HL-Xe carried by interstellar diamonds and Ne-E carried by graphite particles in meteorites are strongly correlated to the supernova environment.

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