Spectroscopic Equilibrium of Iron in Metal-Rich Dwarfs

Details Spectroscopic Equilibrium of Iron in Metal-Rich Dwarfs Spectroscopic Equilibrium of Iron in Metal-Rich Dwarfs

2004-09-14

arxiv.org/abs/astro-ph/0409347v1

Astronomy and Astrophysics

Astrophysics

Proceedings, Cosmic Abundances as Records of Stellar Evolution and Nucleosynthesis, in honor of Dr. David Lambert's 65th birth

Scientific paper

We analyze twenty five nearby metal-rich G and late-F dwarfs in order to verify whether the spectroscopic equilibrium (LTE) of iron lines satisfy the observational constraints imposed by the Infrared Flux Method (angular diameters) and Hipparcos parallaxes. The atmospheric parameters derived from iron lines (assuming LTE and employing 1D Kurucz model atmospheres) do not satisfy simultaneously both observational constraints, probably because classical modeling fails to reproduce the detailed line formation of FeI lines.

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