Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982iaus...98..109s&link_type=abstract
In: Be stars; Proceedings of the Symposium, Munich, West Germany, April 6-10, 1981. (A83-10301 01-90) Dordrecht, D. Reidel Publi
Astronomy and Astrophysics
Astronomy
12
B Stars, Stellar Envelopes, Stellar Evolution, Stellar Spectra, Variable Stars, Astronomical Photography, Emission Spectra, Shell Stars, Star Clusters, Stellar Rotation, Visible Spectrum
Scientific paper
A discussion is presented of the 'classical' Be stars, which are defined as those of luminosity classes III to V, usually rapid rotators, which show normal B-type spectra with superposed Balmer, and sometimes Fe II, emission. Also included, however, are the Oe stars and the A-type shell stars, which seem to represent extensions of the classical Be phenomenon to higher and lower temperatures, respectively. Attention is given to the spectral classification of the stars underlying the Be shells, the variability of the Be spectra in the photographic and visual regions, and the evolutionary status of the classical Be stars. Comments are also presented on such frequently studied individual Be stars as Pleione, Phi Per, Gamma Cas, and 48 Lib.
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