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On the Characteristics of Circumstellar Envelopes in Be Stars near the Central Object

Published online by Cambridge University Press:  12 April 2016

A. Moujtahid ,
J. Zorec  and
A.M. Hubert
A. Moujtahid
Affiliation:
Observatoire de Paris-Meudon, DASGAL/UMR 8633 du CNRS, F-92195 Meudon Principal Cedex, France
J. Zorec
Affiliation:
Institut d’Astrophysique de Paris, CNRS, 98bisbd. Arago, F-75014 Paris, France
A.M. Hubert
Affiliation:
Observatoire de Paris-Meudon, DASGAL/UMR 8633 du CNRS, F-92195 Meudon Principal Cedex, France

Abstract

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Observed visible energy distributions of Be stars were studied with analytic flux distributions produced by flattened circumstellar envelopes. The theoretical representation of emitted fluxes also allows for density distribution effects in the region where the visible continuum emission/absorption is raised. Two main conclusions were reached: (a) regions responsible for spectrophotometric ”shell” phases have, on average, steeper density distributions than those producing the spectrophotometric ”Be” phases; (b) the mean temperatures of the studied circumstellar envelope regions shows a linear relation with their mean ”inverse” extent R*/R.

Type
6. Disks
Information
International Astronomical Union Colloquium , Volume 175: The Be Phenomenon in Early-Type Stars , 2000 , pp. 506 - 509
Copyright
Copyright © Astronomical Society of the Pacific 2000

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