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Next: Introduction

QUANTITATIVE SPECTROSCOPY OF WOLF-RAYET
STARS AND RELATED OBJECTS

PAUL A. CROWTHER
Dept. of Physics & Astronomy, University College London
Gower Street, London, WC1E 6BT, England

Abstract We discuss recent analyses of luminous, post-main sequence, emission line stars based on stratified, extended non-LTE atmospheric models. We will address our knowledge of such objects, focusing in particular on Wolf-Rayet stars, LBVs, Of/WN stars, Of supergiants, and low mass [WC] central stars of Planetary Nebulae. Derived stellar wind properties and chemistries are discussed, which allow the exact evolutionary sequences followed by the most massive stars to be identified, revealing limitations of the standard evolutionary theory. We also discuss future requirements of the Standard Model, including line blanketing and clumping.





Paul Crowther (pac@star.ucl.ac.uk)
Mon Feb 12 13:51:35 GMT 1996