Spectral Indices of Stars at Super-Solar Regime

  • Alberto Buzzoni
  • Miguel Chávez
  • Maria Lucia Malagnini
  • Carlo Morossi
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 274)

Abstract

We derived Lick narrow-band indices for 139 candidate super metal-rich stars of different luminosity class for a sample of which fundamental atmosphere parameters have been obtained from a grid of synthetic reference spectra by Malagnini . (2000). Indices include Iron Fe50, Fe52, Fe53, and Magnesium Mgb and Mg2 features. By comparing models and observations, no evidence is found for non-standard Mg vs. Fe relative abundance (i.e. [Mg/Fe] = 0, on the average, for our sample). Both the Worthey . (1994) and Buzzoni . et al. (1992, 1994) fitting functions are found to suitably match the data, and can therefore confidently be extended for population synthesis applications also to super-solar metallicity regimes.

Keywords

Magnesium 

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References

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Copyright information

© Springer Science+Business Media Dordrecht 2002

Authors and Affiliations

  • Alberto Buzzoni
    • 1
    • 2
  • Miguel Chávez
    • 2
  • Maria Lucia Malagnini
    • 3
  • Carlo Morossi
    • 4
  1. 1.Telescopio Nazionale GalileoSanta Cruz de La Palma (Tf)Spain
  2. 2.Osservatorio Astronomico di BreraMilanoItaly
  3. 3.Instituto Nacional de AstrofísicaOptica y ElectrónicaPueblaMexico
  4. 4.Dipartimento di AstronomiaUniversità degli Studi di TriesteTriesteItaly

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