Evolution and Explosion of Massive Pop III Stars and their Nucleosynthesis

Details Evolution and Explosion of Massive Pop III Stars and their Nucleosynthesis Evolution and Explosion of Massive Pop III Stars and their Nucleosynthesis

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003omeg.conf...43u&link_type=abstract

ORIGIN OF MATTER AND EVOLUTION OF GALAXIES 2000. Proceedings of the International Symposium. Held 19-21 January 2000 in Universi

Astronomy and Astrophysics

Astronomy

Scientific paper

We calculate stability, evolution and explosion of massive Pop III stars. We find the upper limit mass of the pulsationally stable Pop III ZAMS stars is about 130M&sun;, and the mass loss rate of unstable stars may be low. The nucleosynthesis results are compared with abundances of metal-poor halo stars to constrain the IMF of Pop III stars. The interesting trends of the observed ratios [Zn, Co, Mn, Cr/Fe] of the very metal-poor stars can be related to the mass ratio between the complete Si burning region and the incomplete Si burning region. We find that yields of Type II supernovae and Fe core collapse hypernovae can be consistent with the very low metal star abundances, if significant amount of complete Si-burning products are mixed out in the ejecta.

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