On the evolution of massive zero-metal stars

Details On the evolution of massive zero-metal stars On the evolution of massive zero-metal stars

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...272..249c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 272, Sept. 1, 1983, p. 249-255.

Astronomy and Astrophysics

Astrophysics

42

Stellar Evolution, Stellar Models, Supermassive Stars, Supernovae, Abundance, Chemical Evolution, Hertzsprung-Russell Diagram, Stellar Mass, Stellar Temperature

Scientific paper

The evolution of zero-metal stars of 10, 15, and 25 solar masses has been followed through the core H burning and the core He burning phases to the phase of C ignition. It is found that such stars fail to reach the red giant region, burning both H and He at large effective temperature. Variations in the original amount of He in the range Y = 0.20-0.30 only marginally affect the structures of the stars. Zero-metal stars develop peculiarly small H exhausted regions, with larger electron degeneracy in comparison with Population II stars. The impact of supernovae from those stars is briefly discussed in terms of chemical pollution by Population III.

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