Absolute Magnitudes of Be Stars

Details Absolute Magnitudes of Be Stars Absolute Magnitudes of Be Stars

Aug 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997esasp.402..319b&link_type=abstract

Proceedings of the ESA Symposium `Hipparcos - Venice '97', 13-16 May, Venice, Italy, ESA SP-402 (July 1997), p. 319-322

Physics

7

Scientific paper

Absolute magnitudes of Be stars of luminosity classes IV and V are studied by comparison with those of B stars of the same spectral type. On average, Be stars are brighter than B stars of the corresponding spectral type, which agrees with some previous results. However, a very new and interesting result is that this over-luminosity is larger for later Be stars, while it is well known that emission characteristics are fainter for these stars. The very fast rotation of late Be stars, close to the break-up velocity, is the most likely physical explanation. Furthermore, a very preliminary study of the B2e stars shows that the absolute magnitude is influenced by the anisotropic envelope.

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