A classification of Be stars

Astronomy and Astrophysics – Astrophysics

Scientific paper

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B Stars, Classifications, Stellar Spectra, Early Stars, Late Stars, Metallic Stars, Ultraviolet Spectra

Scientific paper

Based upon a sample of 140 stars observed over 20 years for which about 5,000 spectrograms are available, a classification scheme of Be stars is presented. This is the first attempt to subdivide the Be star group into physically significant subgroups, from which typical objects can be selected for further study. The four groups proposed are based upon a discussion of spectrum characteristics, multicolor photometry, polarization, rotational velocities, UV spectral types and time variability. Starting with the group membership of a Be star, predictions can be made of the future behavior of it.

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