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astro-ph2000
Big Bang Nucleosynthesis and Related Observations
Keith A. Olive
The current status of big bang nucleosynthesis is summarized. Particular attention is paid to recent observations of He4 and Li7 and their systematic uncertainties. Be and B are al…
astro-ph2000
On the Determination of the He Abundance in Extragalactic H II Regions
Keith A. Olive, Evan D. Skillman
Of the light element abundances capable of testing standard big bang nucleosynthesis, only He4 is measured with an accuracy of a few percent. Thus, it is imperative to establish a…
astro-ph2000
The Evolution of He4 and LiBeB
Keith A. Olive
Our understanding of the evolution of He4 and Li7 depends critically on the available data for these two elements at low metallicity. In particular, the degree to which there is a…