Observational evidence for a broken Li Spite plateau and mass-dependent Li depletion
We present NLTE Li abundances for 88 stars in the metallicity range-3.5 < [Fe/H] <-1.0. The effective temperatures are based on the infrared flux method with improved E(B-V) values obtained mostly from interstellar Na I D lines. The Li abundances were derived through MARCS models and high-quality UVES+VLT, HIRES+Keck and FIES+NOT spectra, and complemented with reliable equivalent widths from the literature. The less-depleted stars with [Fe/H] <-2.5 and [Fe/H] >-2.5 fall into two well-defined...[Show more]
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|Source:||Astronomy and Astrophysics|
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