A Supergiants

Details A Supergiants A Supergiants

2004-09-07

arxiv.org/abs/astro-ph/0409160v1

Astronomy and Astrophysics

Astrophysics

8 pages, 7 figures; to appear in: conference proceedings IAU Symposium 224: The A-Star Puzzle, J. Zverko, W.W. Weiss, J. Zizno

Scientific paper

10.1017/S174392130400482X

A-type supergiants are primary targets for quantitative spectroscopy of individual stars in nearby galaxies because of their intrinsic brightness. An overview is given on the non-LTE techniques required for their analysis. Applications concentrate on placing observational constraints on evolutionary models for massive stars and their host galaxies by detailed abundance analyses. Results from high-resolution studies of A-type supergiants in Local Group galaxies and from intermediate-resolution multi-object spectroscopy of supergiants far beyond the Local Group are summarised.

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