Laboratory studies of pre-solar grains: experimental astrophysics

Details Laboratory studies of pre-solar grains: experimental astrophysics Laboratory studies of pre-solar grains: experimental astrophysics

Jan 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006acasn..47....1h&link_type=abstract

Acta Astronomica Sinica, vol. 47, no. 1, p. 1-8

Astronomy and Astrophysics

Astrophysics

Dust, Stars: Evolution, Nuclear Reactions, Nucleosynthesis, Abundances, Galaxies: Abundances, Meteors, Meteoroids

Scientific paper

Primitive meteorites contain microscopic pre-solar grains that originated from stellar outflows and supernova ejecta. Identified phases include nano-diamond, graphite, silicon carbide, corundum, spinel, hibonite, and silicates. Their stellar origin was manifested by enormous isotopic compositions compared to solar materials. They are the solid samples from various stellar sources, including red giant stars, AGB stars, novae, and supernovae. Laboratory isotopic analyses of these grains provide a deeper understanding of stellar evolution, nucleo-synthesis and mixing processes, dust formation in stellar environments, and galactic chemical evolution. Pre-solar grains open a new observational window for astrophysical researches.

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