Theoretical stellar ΔY/ΔO in the early Universe

Details Theoretical stellar ΔY/ΔO in the early Universe Theoretical stellar ΔY/ΔO in the early Universe

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010iaus..268..447e&link_type=abstract

Light Elements in the Universe, Proceedings of the International Astronomical Union, IAU Symposium, Volume 268, p. 447-452

Astronomy and Astrophysics

Astronomy

Nucleosynthesis, Stars: Rotation, Early Universe

Scientific paper

Population III stars initiated the chemical enrichment of the Universe. Chemical evolution models seem to favour fast rotators among the very low-metallicity population. When a star rotates fast, it ejects significant quantities of He and its nucleosynthesic products are modified compared to the case without rotation. The value of ΔY/ΔO is explored from a theoretical point of view through stellar models of zero- or very low-metallicity.

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