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| Paper: |
Yields from the Primordial Stars |
| Volume: |
92, Formation of the Galactic Halo. . . . Inside and Out |
| Page: |
337 |
| Authors: |
Arnett, David |
| Abstract: |
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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