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Light Curves of Be Stairs due to Orbiting Arcs of Matter or Prominence-Like Structures

Published online by Cambridge University Press:  12 April 2016

J. Zorec ,
Y. Frémat  and
A.M. Hubert
J. Zorec
Affiliation:
Institut d’Astrophysique de Paris, CNRS, 98bisBd. Arago, F-75014 Paris, France
Y. Frémat
Affiliation:
Université de Mons-Hainaut, Belgique
A.M. Hubert
Affiliation:
Observatoire de Paris-Meudon, DASGAL/UMR 8633 du CNRS, F-92195 Meudon Principal Cedex, France

Abstract

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An alternative explanation to the light variations of some Be stars observed during their Be ⇌ Be-shell phase changes is proposed in terms of orbiting or passing clouds. Discrete ejections of matter and/or the presence of orbiting clouds suggest that the circumstellar envelopes of these Be stars may be clumpy.

Type
4. Aperiodic Variations
Information
International Astronomical Union Colloquium , Volume 175: The Be Phenomenon in Early-Type Stars , 2000 , pp. 330 - 333
Copyright
Copyright © Astronomical Society of the Pacific 2000

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