Be stars in open clusters in the Small Magellanic Cloud.

Christophe Martayan (1, 2) , Dietrich Baade (1) , Anne-Marie Hubert (2) , Michele Floquet (2) , Juan Fabregat (3) , Emmanuel Bertin (4) , Coralie Neiner (2)

1 ESO - European Southern Observatory
2 GEPI - Galaxies, Etoiles, Physique, Instrumentation
3 Observatorio Astronomico de la Universidad de Valencia
4 IAP - Institut d'Astrophysique de Paris

We report on the study of the population of B and Be stars in SMC young clusters, performed with the Wide Field Imager in slitless spectroscopic mode at ESO/T2.2m with a filter centered at Halpha. First, we explain the reduction methods we used and our selection of different types of objects. Second, we present results on the proportion of Be stars in SMC clusters, and we compare this proportion to the one observed in the Milky Way. Finally, we also present results on a statistical study of variability of Be stars with OGLE.

Mots clés: stars; spectroscopy; Small Magellanic Cloud; open clusters; variability

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

Christophe Martayan, Dietrich Baade, Anne-Marie Hubert, Michele Floquet, Juan Fabregat, et al.. Be stars in open clusters in the Small Magellanic Cloud.. 2006. ⟨hal-00098331⟩