Two-dimensional model atmospheres of metal-poor halo dwarfs. II. Iron and lithium LTE abundances.

Details Two-dimensional model atmospheres of metal-poor halo dwarfs. II. Iron and lithium LTE abundances. Two-dimensional model atmospheres of metal-poor halo dwarfs. II. Iron and lithium LTE abundances.

Feb 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999kfnt...15...17g&link_type=abstract

Kinematika Fiz. Nebesn. Tel, Tom 15, No. 1, p. 17 - 24

Physics

Stellar Atmospheres: Iron, Stellar Atmospheres: Lithium, Stellar Atmospheres: Dwarfs, Stellar Atmospheres: Metal-Poor Stars

Scientific paper

The effect of atmospheric inhomogeneities on the iron and lithium LTE abundances is estimated at 0.2 - 0.3 dex based on two-dimensional model atmospheres of metal-poor halo stars ([M/H] = -2) with Teff and log g close to the solar values. Spectral observations of Fe I and Li I lines in stellar spectra were used. The absolute value of the lithium LTE abundance found with 2D-models ranges from 2.0 to 2.4 in the hydrogen scale.

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