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The Evolution of Non-spherical and Non-stationary Winds of Massive Stars

Published online by Cambridge University Press:  12 April 2016

Norbert Langer
Norbert Langer*
Affiliation:
Institut für Physik, Universität Potsdam, D-14415 Potsdam, Germany

Abstract

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We describe present theoretical ideas about the time evolution of the winds of luminous stars with emphasis to effects of non-sphericity and non-stationarity. We discuss the evolution of the winds of rotating luminous stars during their main sequence evolution, in particular when they approach their Eddington-limit or any other surface instability. We then consider the winds of post-main sequence stars up to the immediate pre-supernova stage. We connect the giant outbursts of Luminous Blue Variables with luminous rotating post-main sequence stars in thermal disequilibrium. We further discuss the spin-up effect of Heger & Langer (1998) for post-red supergiants and describe its observational consequences. We compare theoretical models with observations of the winds of B[e] supergiants and Luminous Blue Variables in general, and with SN 1987A, VY CMa and η Car and the Pistol Star in particular.

Type
Session VI Evolutionary Aspects
Information
International Astronomical Union Colloquium , Volume 169: Variable and Non-spherical Stellar Winds in Luminous Hot Stars , 1999 , pp. 359 - 367
Copyright
Copyright © Springer-Verlag 1999

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