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Correlated Spectroscopic and Spectrophotometric Behaviours of Be Stars

Published online by Cambridge University Press:  12 April 2016

A. Moujtahid ,
A.M. Hubert ,
J. Zorec ,
D. Ballereau ,
J. Chauville ,
M. Floquet  and
M. Mon
A. Moujtahid
Affiliation:
Observatoire de Paris-Meudon, DASGAL/UMR 8633 du CNRS, F-92195 Meudon Principal Cedex, France
A.M. Hubert
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, 98bis bd. Arago, F-75014 Paris, France
D. Ballereau
Affiliation:
Observatoire de Paris-Meudon, DASGAL/UMR 8633 du CNRS, F-92195 Meudon Principal Cedex, France
J. Chauville
Affiliation:
Observatoire de Paris-Meudon, DASGAL/UMR 8633 du CNRS, F-92195 Meudon Principal Cedex, France
M. Floquet
Affiliation:
Observatoire de Paris-Meudon, DASGAL/UMR 8633 du CNRS, F-92195 Meudon Principal Cedex, France
M. Mon
Affiliation:
University of Tokyo, Japan

Abstract

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Correlations between long-term spectrophotometric and optical spectroscopic variations are investigated in some Be stars. Using spectrophotometric variations as a function of time and a compilation of spectroscopic measurements, we investigated temporal variations of emission and shell line parameters. In some cases time lags between spectroscopic and spectrophotmetric variations could be estimated. We could not find precise relations between the spectroscopic and spectrophotometric behaviours, but a number of tendencies could be derived which give information on physical parameters of circumstellar envelopes in Be stars.

Information

Type
6. Disks
Information
International Astronomical Union Colloquium , Volume 175: The Be Phenomenon in Early-Type Stars , 2000 , pp. 514 - 517
Copyright
Copyright © Astronomical Society of the Pacific 2000

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