Published November 9, 2009 | Version v1
Conference paper

The metal-poor end of the Spite plateau: gravity sensitivity of the Halpha wings fitting.

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Description

We 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 Halpha wings fitting, and on its sensitivity to the chosen stellar gravity.

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URL
https://hal.archives-ouvertes.fr/hal-03734074
URN
urn:oai:HAL:hal-03734074v1

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Origin repository
UNICA