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David Mkrtichian, Chris Engelbrecht, Patricia Lampens, Holger Lehmann & Naparorn A-thano

A spectroscopic survey of oEA stars

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Mots-clés : binaires, éclipsantes, étoiles, oscillations, oEA

Abstract

National Astronomical Research Institute of Thailand, Chiang Mai 50180, Thailand
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, WY Cet, VY Hya, GQ TrA, BD Vir, and UW Vir.

Keywords : binaries, eclipsing, stars, oscillations, oEA stars

To cite this article

David Mkrtichian, Chris Engelbrecht, Patricia Lampens, Holger Lehmann & Naparorn A-thano, «A spectroscopic survey of oEA stars», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 88 - Année 2019, Actes de colloques, 2nd Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop - October 2018 - Brussels, Belgium, 256 - 261 URL : https://popups.uliege.be/0037-9565/index.php?id=8946.

About: David Mkrtichian

National Astronomical Research Institute of Thailand, Chiang Mai 50180, Thailand,  davidmkrt@gmail.com

About: Chris Engelbrecht

Department of Physics, University of Johannesburg, PO Box 524, Auckland Park, 2006, South Africa

About: Patricia Lampens

Koninklijke Sterrenwacht van België, Brussel 1180, Belgium

About: Holger Lehmann

Thüringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenburg, Germany

About: Naparorn A-thano

National Astronomical Research Institute of Thailand, Chiang Mai 50180, ThailandKhemsinan Gunsriwiwat