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: email@example.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
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