Galactic Evolution of Beryllium and Oxygen

Details Galactic Evolution of Beryllium and Oxygen Galactic Evolution of Beryllium and Oxygen

2000-03-22

arxiv.org/abs/astro-ph/0003336v1

Astronomy and Astrophysics

Astrophysics

8 pages, 2 figures, To appear in The Light Elements and Their Evolution, IAU Symp. 198, L. da Silva, M. Spite and R. de Medeir

Scientific paper

We discuss the early evolution of beryllium and oxygen in our Galaxy by comparing abundances of these elements for halo and disk metal-poor stars. Both, O and Be rise as we go progressively to more metal-rich stars, showing a slope 0.41 +-0.09 ([Be/O] vs [Fe/H]) for stars with [Fe/H] < -1. This relationship provides an observational constraint to the actually proposed Galactic Cosmic Ray theories.

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