Spectral Indices of Stars at Super-solar Regime

Details Spectral Indices of Stars at Super-solar Regime Spectral Indices of Stars at Super-solar Regime

2001-07-05

arxiv.org/abs/astro-ph/0107105v1

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures; proceedings of "New Quests in Stellar Astrophysics: The link between Stars and Cosmology", 26-30 March, 20

Scientific paper

We derived Lick narrow-band indices for 139 candidate super metal-rich stars of different luminosity class previously studied in Malagnini et al. (2000). Indices include Iron Fe50, Fe52, Fe53, and Magnesium Mgb and Mg2 features. By comparing observations with Kurucz' synthetic model atmospheres, no evidence is found for non-standard Mg vs. Fe relative abundance (i.e. [Mg/Fe]~ 0, on the average, for our sample). A comparison with the Worthey et al.(1994) and Buzzoni et al.(1992, 1994) fitting function predictions for [Fe/H] > 0 is performed and briefly discussed.

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