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Pulsations of Wolf-Rayet stars: observational results for five WR stars

Published online by Cambridge University Press:  07 August 2017

P. Bratschi
P. Bratschi*
Affiliation:
Geneva Observatory, CH-1290 Sauverny, Switzerland

Abstract

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Since the recent discovery of fast pulsations of a WR star (Blecha et al. 1992), we observed five WR stars intensively and we report here the detection of fast photometric variations for three of them. These variations have a quasi periodic features with a time-scale compatible with theoretical predictions (Maeder 1985, Glatzel et al. 1993). For all observed WR stars the period can vary significantly and even disappear, showing the erratic nature of this phenomenon.

Keywords

stars: Wolf-Rayetstars: mass lossphotometry
Type
Session I - Basic parameters, properties of single Wolf-Ray et stars
Information
Symposium - International Astronomical Union , Volume 163: Wolf-Rayet Stars: Binaries, Colliding Winds, Evolution , 1995 , pp. 64 - 65
Copyright
Copyright © Kluwer 1995 

References

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Schneider, H., Kiriakidis, M., Weiss, W., Glatzel, W., Fricke, K.J. 1994, in press Google Scholar