https://doi.org/10.1051/epjconf/202024005002
Pulsations in Algols
1 National Astronomical Research Institute of Thailand, 260 Moo 4, T. Donkaew, A. Maerim, Chiangmai, 50180, Thailand
2 Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Thailand
3 Department of Physics, University of Johannesburg, PO Box 524, Auckland Park, 2006, South Africa
4 Institute of Astronomy, National Tsing Hua University, Hsinchu 30013, Taiwan
5 Astronomical Observatory, Odessa National University, Shevchenko Park, 65014, Odessa, Ukraine
* Corresponding author: davidmkrt@gmail.com
Published online: 21 August 2020
We present a brief review of the recent results of photometric and spectroscopic surveys and 3-D hydrodynamic simulations of the mass- transfer for the class of oscillating mass-accreting components of Algols (oEA stars). These ground-based spectroscopic and space-based photometric surveys are aimed at detecting and studying the spectra of non- radial oscillations, to get precise orbits and parameters of the binaries, and studying the spectroscopic and the hydrodynamic nature of the mass- transfer. We discovered 47 new oEA stars in TESS data and carried out follow up spectroscopic observations of known and new oEA stars with the SALT telescope. We found that the co-existence of excitation of high-degree non-radial modes with a wide spectrum of low-degree modes is a common phenomenon in oEA stars.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
