Zams Rotational Velocities of be Stars
Astrophysics
2007-05-23 v1
Abstract
We show that Be stars belong to a high velocity tail of a single B-type star rotational velocity distribution in the main sequence (MS). We studied 127 galactic field Be stars and obtained their true equatorial velocity at the ZAMS using models of stellar evolution with rotation. There is a sharp mass-dependent cut in the ZAMS under which there is no Be star. Velocities above this cut follow a Gaussian-tail distribution. B stars with ZAMS rotational velocities lower than the cut probably cannot become Be.
Cite
@article{arxiv.astro-ph/0509175,
title = {Zams Rotational Velocities of be Stars},
author = {Juan Zorec and Christophe Martayan and Yves Fremat and Anne-Marie Hubert and Michele Floquet},
journal= {arXiv preprint arXiv:astro-ph/0509175},
year = {2007}
}
Comments
Societe Francaise d'Astronomie et d'Astrophysique, France (2005)