1999/02/09 by Sylvie Vauclair, Vauclair, Sylvie
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9902144
7pages, 5figures, paper given at the LiBeB workshop, IAP, Paris, Dec'98
arxiv created 1999/02/09 · arxiv updated 2009/12/01
While theoretical computations of the lithium abundances in Pop II stars predict variations from star to star, the most recent observations confirm the existence of a "lithium plateau" with no abundance dispersion. This apparent paradox has to be faced and a solution has to be found before deriving the primordial lithium abundance. In any case lithium 7 has been depleted in these stars by at least 20 percent and lithium 6 by at least a factor 2, even in the hottest stars of the "plateau". Consequences for other elements are also discussed.