A spectroscopic survey of oEA stars
David Mkrtichian,
National Astronomical Research Institute of Thailand, Chiang Mai 50180, Thailand,
davidmkrt@gmail.com
Chris Engelbrecht,
Department of Physics, University of Johannesburg, PO Box 524, Auckland Park, 2006, South Africa
Patricia Lampens,
Koninklijke Sterrenwacht van België, Brussel 1180, Belgium
Holger Lehmann,
Thüringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenburg, Germany
Naparorn A-thano,
National Astronomical Research Institute of Thailand, Chiang Mai 50180, ThailandKhemsinan Gunsriwiwat
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
Pour citer cet 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 : http://popups.ulg.be/0037-9565/index.php?id=8946.