ON THE FREQUENCY OF FIELD GALACTIC Be STARS

Juan Zorec (1) , Yves Fremat (2)

1 IAP - Institut d'Astrophysique de Paris
2 ROB - Royal Observatory of Belgium = Observatoire Royal de Belgique

Since Be stars belong to the high velocity tail of a single B star velocity distribution, the appearance of the Be phenomenon must be independent of the stellar mass. In the present paper we show that the shape of the distribution of the number fraction N(Be)/N(Be+B) against the spectral type can be explained in terms of the Balmer line emission efficiency as a function of the effective temperature.

Mots clés: Frequency of Be stars; Be stars

Domaines: Cosmologie et astrophysique extra-galactique [astro-ph.CO]

Juan Zorec, Yves Fremat. ON THE FREQUENCY OF FIELD GALACTIC Be STARS. Societe Francaise d'Astronomie et d'Astrophysique, 2005, France. ⟨hal-00008526⟩