On the behaviour of B and Be stars at low metallicity
Astrophysics
2007-09-19 v2
Abstract
We present new results obtained with the VLT GIRAFFE for a large sample of B and Be stars belonging to the Magellanic Clouds, i.e. at low metallicity. First, we show the effects of the metallicity of the environment on their rotation (linear, angular, and at the ZAMS). Second, we present the analysis of the effects of metallicity and evolution on the appearance of Be stars. We also new present results about the proportions of Be stars to B stars. Third, by cross-correlation with large photometric surveys such as MACHO and OGLE, we report on the detection for the first time of short-term multi-periodicity in 9 Be stars in the Small Magellanic Cloud, which can be interpreted in terms of pulsations.
Cite
@article{arxiv.0709.2820,
title = {On the behaviour of B and Be stars at low metallicity},
author = {Christophe Martayan and Yves Fremat and Anne-Marie Hubert and Michele Floquet and Coralie Neiner and Jean Zorec and Dietrich Baade and Juan Gutiérrez-Soto and Juan Fabregat and Malek Mekkas},
journal= {arXiv preprint arXiv:0709.2820},
year = {2007}
}
Comments
sf2a 2007 PNPS