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Spectrophotometric and Photometric Behaviours of Be Stars: the Circumstellar Envelope Formation Mechanisms

Published online by Cambridge University Press:  12 April 2016

J. Zorec ,
A.M. Hubert  and
A. Moujtahid
J. Zorec
Affiliation:
Institut d’Astrophysique de Paris, CNRS, 9bis bd. Arago, F-75014 Paris, France
A.M. Hubert
Affiliation:
Observatoire de Paris-Meudon, DASGAL/UMR 8633 du CNRS, F-92195 Meudon Principal Cedex, France
A. Moujtahid
Affiliation:
Observatoire de Paris-Meudon, DASGAL/UMR 8633 du CNRS, F-92195 Meudon Principal Cedex, France

Abstract

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A mechanism to create circumstellar envelopes in Be stars is proposed. The mechanism assumes a mass-loaded wind produced by ablated discrete stellar ejecta. The discrete mass ejections are suggested by the long-term spectrophotometric behaviours of Be stars and by their short and long-lived light outbursts discovered recently.

Information

Type
6. Disks
Information
International Astronomical Union Colloquium , Volume 175: The Be Phenomenon in Early-Type Stars , 2000 , pp. 448 - 451
Copyright
Copyright © Astronomical Society of the Pacific 2000

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