Yields from the Primordial Stars

Details Yields from the Primordial Stars Yields from the Primordial Stars

Apr 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aspc...92..337a&link_type=abstract

Formation of the Galactic Halo...Inside and Out, ASP Conference Series, Vol. 92, 1996, Heather Morrison and Ata Sarajedini, eds.

Physics

6

Scientific paper

The first stars were formed from matter fresh from the Big Bang, and the evidence of their nucleosynthesis should be evident in extremely metal-poor Population II stars. Estimates of these yields are sensitive to poorly understood features of convective mixing. The yields from H to Ni from a primordial star of 25 M_sun are discussed. The effective helium core is significantly smaller than in Population I stars. Significant amounts of primary nitrogen may be produced. The ratio of helium to ``metal'' production is relatively high, dY/dZ ~ 3.4. A significant neutron excess develops during hydrostatic carbon burning which places lower limits of the ratios of Na/Mg and Al/Mg, as well as for heavier odd-Z/even-Z pairs. Li and (3He) are produced, but weakly.

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