Light Element Settling in Main-Sequence Pop II Stars and the Primordial Lithium Abundance
Astrophysics
2007-05-23 v1
Abstract
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.
Keywords
Cite
@article{arxiv.astro-ph/9902144,
title = {Light Element Settling in Main-Sequence Pop II Stars and the Primordial Lithium Abundance},
author = {Sylvie Vauclair},
journal= {arXiv preprint arXiv:astro-ph/9902144},
year = {2007}
}
Comments
7pages, 5figures, paper given at the LiBeB workshop, IAP, Paris, Dec'98