C. Jordi, X. Luri, E. Masana, J. Torra, F. Figueras, A. Domingo, A. E. Gómez, M. O. Mennessier
Published 2000-10-02Version 1
The ESA HIPPARCOS satellite has provided astrometry of unprecedented accuracy, allowing to reassess, improve and refine the pre-HIPPARCOS luminosity calibrations. We review the "classical" absolute magnitude calibrations with the Stroemgren-Crawford intermediate-band photometric system. A small zero point correction of about 2-4% seems necessary, as well as to refine the dependences on metallicity and projected rotational velocity. The need of a rigorous statistical treatment of the extremely precise HIPPARCOS to derive definite dependences of the luminosity on physical stellar parameters is emphasized.
Comments: 4 pages; to appear in proceedings of IAU GA-XXIV Joint Discussion 13: Hipparcos and the Luminosity Calibration of the Nearer Stars (Highlights of Astronomy Vol 12)
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