A spectroscopic survey of oEA stars

10-2019

Mkrtichian, D.; Engelbrecht, C.; Lampens, P.; Lehmann, H.; A-thano, N.; Gunsriwiwa, K.

Abstract :

We present the first results of a spectroscopic survey of southern and equatorial Algol-type eclipsing binary systems with mass-accreting pulsating components (oEA stars) using the 2.4-m Thai National Telescope (TNT) and the 10-m South African Large Telescope (SALT). The survey aims to find orbital and binary parameters and to detect the high-degree non-radial pulsations (NRPs). We report the detection of high-degree NRPs in AS Eri, WYCet, VYHya, GQTrA, BDVir, and UWVir.

Publication : Bulletin de la Société Royale des Sciences de Liège, in Proceedings of the Second Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop, October 2018, held in Brussels, Belgium, Vol. 88, pp. 256-261
Bibcode : 2019BSRSL..88..256M
DOI : 10.25518/0037-9565.8946
Keywords : binaries; eclipsing; Stars: oscillations; oEA stars

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