The Halo Lithium Plateau: Outstanding Issues

Details The Halo Lithium Plateau: Outstanding Issues The Halo Lithium Plateau: Outstanding Issues

2004-10-20

arxiv.org/abs/astro-ph/0410472v1

Astronomy and Astrophysics

Astrophysics

6 pages, 1 table to appear in the Proceedings of the ESO/Arcetri Conference on Chemical Abundances and Mixing in Stars in the

Scientific paper

We examine outstanding issues in the analysis and interpretation of the halo Li plateau. We show that the majority of very Li-poor halo Li-plateau stars (5 out of 8) have high projected rotation velocities vsini between 4.7 and 10.4 km s^-1. Such stars have very different evolutionary histories to Li-normal plateau stars, and hence cannot be included in studies of Li depletion by normal halo dwarfs. Uncertainties in the effective temperature scale for metal-poor stars continue to challenge the analysis of Li.

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