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Astrophysics and Space Science

, Volume 245, Issue 1, pp 61–80 | Cite as

The comparable analysis of the Cepheids and non-variable supergiants from the instability strip.I

  • Sergei M. Andrievsky
  • Valery V. Kovtyukh
Article

Abstract

The elemental abundances, temperatures, gravities and microturbulence velocities were derived for 14 non-variable supergiants from the Cepheids' instability strip and two hotter supergiants. For 8 stars the abundances were determined for the first time. The comparable analysis of the program stars' chemical composition and that of the small-amplitude Cepheids has shown that there is no essential differences in the elemental abundances for two stellar groups. Some discussion of the phenomenon of non-variable supergiants in the instability strip is given.

Keywords

Comparable Analysis Essential Difference Elemental Abundance Program Star Instability Strip 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • Sergei M. Andrievsky
    • 1
  • Valery V. Kovtyukh
    • 1
  1. 1.Department of AstronomyOdessa State UniversityOdessaUkraine

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