Color/symbol conventions

The colors and the shapes of the symbols in the diagrams are related to the spectral classification of the star.
Luminosity class V Luminosity class III
Luminosity class III, log(Teff)>3.85 and log(g)>3.2 Luminosity class II
Luminosity class I Wolf-Rayet stars

U-B versus B-V diagram of the star in the database. Photometry is from the J.C. Mermillod's photometric catalogue . Lausanne photometric database. The data are corrected for interstellar extinction (the correction is shown by the white lines).

log(g) vs Teff diagrams

Teff colours relations

HR diagrams

metallicity distribution.

last update: 09 JUN 00