| Issue |
EAS Publications Series
Volume 47, 2011
Astronomical Spectrography for Amateurs
|
|
|---|---|---|
| Page(s) | 139 - 163 | |
| DOI | https://doi.org/10.1051/eas/1147005 | |
| Published online | 11 April 2011 | |
Astronomical Spectrography for Amateurs
J.-P. Rozelot and C. Neiner (eds)
EAS Publications Series, 47 (2011) 139–163
J.-P. Rozelot and C. Neiner (eds)
EAS Publications Series, 47 (2011) 139–163
Spectroscopy of be stars
LESIA, UMR 8109 du CNRS, Observatoire de Paris-Meudon, 5 place Jules Janssen, 92195 Meudon Cedex, France
This chapter describes non supergiant B-type stars that show emission lines, called Be stars. The emission is caused by the presence of a circumstellar decretion disk. Many physical phenomena are thought to be involved in these stars, such as rapid rotation, pulsations and magnetic fields, and give rise to variations. Spectroscopy is used as a diagnostic tool to study Be stars, by professional astronomers as well as by amateurs.
© EAS, EDP Sciences, 2011