2000/03/22 by Garik Israelian, Israelian, Garik, Ramon Garcia Lopez +3
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0003336
8 pages, 2 figures, To appear in The Light Elements and Their Evolution, IAU Symp. 198, L. da Silva, M. Spite and R. de Medeiros, eds., ASP
arxiv created 2000/03/22 · arxiv updated 2009/12/01
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.