The Halo Lithium Plateau: Outstanding Issues
Abstract
Description
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.
6 pages, 1 table to appear in the Proceedings of the ESO/Arcetri Conference on Chemical Abundances and Mixing in Stars in the Milky Way and its Satellites, edited by Luca Pasquini and Sofia Randich, published by Springer-Verlag as part of the "ESO Astrophysics Symposia"
6 pages, 1 table to appear in the Proceedings of the ESO/Arcetri Conference on Chemical Abundances and Mixing in Stars in the Milky Way and its Satellites, edited by Luca Pasquini and Sofia Randich, published by Springer-Verlag as part of the "ESO Astrophysics Symposia"