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Effective temperatures and lithium abundances of halo turnoff stars

Nissen, Poul E; Akerman, Chris J; Asplund, Martin; Fabbian, Damian; Pettini, Max

Description

Effective temperatures of 30 turnoff stars with -3.2 < [Fe/H] < -1.5 have been derived from the profiles of Balmer lines in high S/N, VLT/UVES spectra. While the systematic error of Teff may be of the order of 100 K, the differential values of Teff are determined with a one-sigma precision of ∼25K. These precise Teff values are used in a study of the slope and dispersion of the Li abundance as a function of [Fe/H]. A small, but significant cosmic dispersion in A (Li) appears to be present...[Show more]

CollectionsANU Research Publications
Date published: 2005
Type: Book chapter
URI: http://hdl.handle.net/1885/83407
DOI: 10.1017/S1743921305005351

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