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arXiv · 1701.00961

The solitary g-mode frequencies in early B-type stars

J. Daszynska-Daszkiewicz·P. Walczak·A. A. Pamyatnykh·M. Jerzykiewicz·A. Pigulski
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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: $κ$ Cen, a Car, $κ$ 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.

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J. Daszynska-Daszkiewicz, P. Walczak, A. A. Pamyatnykh, M. Jerzykiewicz, A. Pigulski. 2017-01-04. The solitary g-mode frequencies in early B-type stars. https://arxiv.org/abs/1701.00961

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