The path to metallicity: synthesis of CNO elements in standard BBN

Details The path to metallicity: synthesis of CNO elements in standard BBN The path to metallicity: synthesis of CNO elements in standard BBN

2007-02-03

arxiv.org/abs/astro-ph/0702090v2

Phys.Rev.D75:087304,2007

Astronomy and Astrophysics

Astrophysics

4 pages, 1 eps figure

Scientific paper

10.1103/PhysRevD.75.087304

We perform a reanalysis of the production of CNO elements in a standard Big Bang Nucleosynthesis scenario. The CNO yields in BBN are suppressed by the low density of the plasma, Coulomb barrier effects and the short time scales involved. Yet, the inclusion of nuclides and reactions traditionally disregarded may lead to an increase relevant enough to affect the pristine Population III stars. After a critical reanalysis and upgrade of the nuclear network our results show no major discrepancies with the ones obtained using a smaller nuclear network. The robustness of the standard predictions-the early generation of star developed in a metal-free environment-is confirmed.

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