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Cambridge University Press (CUP), Proceedings of the International Astronomical Union, S268(5), p. 355-356, 2009

DOI: 10.1017/s1743921310004448

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The metal–poor end of the Spite plateau: gravity sensitivity of the Hα wings fitting.

Journal article published in 2009 by L. Sbordone ORCID, P. Bonifacio, E. Caffau, H.-G. Ludwig, N. Behara, J. I. Gonzalez-Hernandez ORCID, M. Steffen, R. Cayrel, B. Freytag, C. Van't Veer, P. Molaro, B. Plez, T. Sivarani, M. Spite, F. Spite and other authors.
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

AbstractWe recently presented (Sbordone et al., 2009a) the largest sample to date of lithium abundances in extremely metal-poor (EMP) Halo dwarf and Turn-Off (TO) stars. One of the most crucial aspects in estimating Li abundances is the Teff determination, since the Li I 670.8 nm doublet is highly temperature sensitive. In this short contribution we concentrate on the Teff determination based on Hα wings fitting, and on its sensitivity to the chosen stellar gravity.

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