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Nonradial Pulsations and the Be Phenomenon

Published online by Cambridge University Press:  19 July 2016

Dietrich Baade
Dietrich Baade*
Affiliation:
Space Telescope-European Coordinating Facility, European Southern Observatory, Karl-Schwarzschild-Str. 2, D-8046 Garching, W. Germany

Abstract

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Following a summary of the observations which suggest that the outbursts of classical Be stars are caused by nonradial pulsations, properties, implications and requirements of a model based on this notion are evaluated. A preliminary analysis of new observations of μ Cen is presented which for the first time in a Be star reveals two relatively closely spaced non–commensurate periods. Such a result would render implausible speculations that the variability of Be stars is due to corotating surface features.

Type
IV. Spectroscopic Patterns of Stellar Atmospheres
Information
Symposium - International Astronomical Union , Volume 132: The Impact of Veryhigh S/N Spectroscopy on Stellar Physics , 1988 , pp. 217 - 222
Copyright
Copyright © Kluwer 1988 

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