The Halo Lithium Plateau : Outstanding Issues

Ryan, Sean G. and Elliott, L. (2006) The Halo Lithium Plateau : Outstanding Issues. In: Chemical Abundances and Mixing in Stars in the Milky Way and its Satellites : Procs of ESO Workshop. Springer Nature, ITA, pp. 185-190.
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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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