Absolute Magnitudes of Be Stars Based on Hipparcos Parallaxes

Details Absolute Magnitudes of Be Stars Based on Hipparcos Parallaxes Absolute Magnitudes of Be Stars Based on Hipparcos Parallaxes

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ap%26ss.306..113z&link_type=abstract

Astrophysics and Space Science, Volume 306, Issue 3, pp.113-128

Astronomy and Astrophysics

Astrophysics

1

Absolute Magnitude, Be Stars, Stellar Rotation, Infrared Excess

Scientific paper

The absolute visual magnitudes of 457 Be stars are determined from Hipparcos parallaxes, subsequently the mean absolute visual magnitudes of Be stars for luminosity classes III, IV and V are obtained. The new Mv calibration is compared with existing calibrations. It is found that Be stars are generally brighter than B stars of the corresponding spectral types, and that there is no direct correlation between absolute magnitudes and the stellar rotational velocity, these results are in agreement with some earlier results. A new and interesting result is that there is no direct correlation between near infrared excess and absolute visual magnitudes for Be stars. Moreover, possible biases, such as the Malmquist bias and the Lutz Kelker bias, are also discussed.

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