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Variability in the Circumstellar Envelope of Be Stars

Published online by Cambridge University Press:  26 May 2016

A.M. Hubert
A.M. Hubert*
Affiliation:
Observatoire de Paris, section d'Astrophysique de Meudon URA 335 du CNRS, F-92195 Meudon Cedex, France

Abstract

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A progress report will be given on recent studies of circumstellar variability of Be stars, their implications on the formation process, the dynamics, the structure and the morphology of the envelope. The following points are discussed: recurrence of outbursts, simultaneous infall and outflow events, variability in hot regions versus variability in the cool envelope, the establishment and vanishing of Be and Be-shell phases, periodic medium-term and quasi-periodic long-term phenomena, and constraints on models.

Type
6. Be Stars: Circumstellar Environment
Information
Symposium - International Astronomical Union , Volume 162: Pulsation, Rotation and Mass Loss in Early-Type Stars , 1994 , pp. 341 - 350
Copyright
Copyright © Kluwer 1994 

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