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Astrophysics and Space Science

, Volume 306, Issue 3, pp 113–128 | Cite as

Absolute Magnitudes of Be Stars Based on Hipparcos Parallaxes

  • P. Zhang
  • C. Q. Liu
  • P. S. Chen
Original Article

Abstract

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.

Key words

Absolute magnitude Be stars Stellar rotation Infrared excess 

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Copyright information

© Springer Science+Business Media B.V. 2006

Authors and Affiliations

  • P. Zhang
    • 1
    • 2
  • C. Q. Liu
    • 3
  • P. S. Chen
    • 1
  1. 1.National Astronomical Observatories/Yunnan Observatory and Graduate SchoolChinese Academy of SciencesKunmingChina
  2. 2.Cosmic Ray InstituteYunnan UniversityKunmingChina
  3. 3.School of Mathematics and PhysicsYunnan UniversityKunmingChina

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