The solitary g-mode frequencies in early B-type stars
Solar and Stellar Astrophysics
2017-01-05 v1
Abstract
We present possible explanations of pulsations in early B-type main sequence stars which arise purely from the excitation of gravity modes. There are three stars with this type of oscillations detected from the BRITE light curves: Cen, a Car, Vel. We show that by changing metallicity or the opacity profile it is possible in some models to dump pressure modes keeping gravity modes unstable. Other possible scenario involves pulsations of a lower mass companion.
Keywords
Cite
@article{arxiv.1701.00961,
title = {The solitary g-mode frequencies in early B-type stars},
author = {J. Daszynska-Daszkiewicz and P. Walczak and A. A. Pamyatnykh and M. Jerzykiewicz and A. Pigulski},
journal= {arXiv preprint arXiv:1701.00961},
year = {2017}
}
Comments
talk at the second BRITE-Constellation Science Conference, Innsbruck, 2016, to be published in the Proceedings of the Polish Astronomical Society, eds: G. Stachowski, E. Poretti, and J. Matthews