The Lithium Content of the Galactic Halo Stars

Details The Lithium Content of the Galactic Halo Stars The Lithium Content of the Galactic Halo Stars

2005-05-12

arxiv.org/abs/astro-ph/0505247v2

Astronomy and Astrophysics

Astrophysics

34 pages. Accepted for publication in A&A. Includes additional references and minor corrections

Scientific paper

Thanks to the accurate determination of the baryon density of the universe by the recent cosmic microwave background experiments, updated predictions of the standard model of Big Bang nucleosynthesis now yield the initial abundance of the primordial light elements with an unprecedented precision. In the case of $^7$Li, the CMB+SBBN value is significantly higher than the generally reported abundances for Pop II stars along the so-called Spite plateau. In view of the crucial importance of this disagreement which has cosmological, galactic and stellar implications, we decided to tackle the most critical issues of the problem by revisiting a large sample of literature Li data in halo stars that we assembled following some strict selection criteria on the quality of the original analyses. [Abridged]

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