The Evolution of He4 and LiBeB

Details The Evolution of He4 and LiBeB The Evolution of He4 and LiBeB

2000-01-31

arxiv.org/abs/astro-ph/0001535v1

Astronomy and Astrophysics

Astrophysics

11 pages, latex, 5 ps figures, summary of talk at IAU Symposium 198: The Light Elements and their Evolution, eds. L. da Silva,

Scientific paper

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 slope in an abundance vs metallicity regression can help determine the evolution of He, C, N, and O in dwarf galaxies in the case of He, and cosmic-ray induced nucleosynthesis of LiBeB in our own galaxy in the case of Li. Recent data and their implications will be discussed.

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