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- Volume 92 - Année 2023
- Numéro 2 - Proceedings of the 10th Meeting on Hot ...
- New Hot Subdwarf Variables from Gaia eDR3
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Isaac D. Lopez, Alekzander Kosakowski, Brad N. Barlow & Thomas Kupfer 
New Hot Subdwarf Variables from Gaia eDR3
(Volume 92 - Année 2023 — Numéro 2 - Proceedings of the 10th Meeting on Hot Subdwarfs and Related Objects)
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We present a search for new variable hot subdwarfs from Gaia eDR3 using the Zwicky Transient Facility DR9 and the 2.1 m Otto Struve Telescope at McDonald Observatory. We report the discovery of 22 HW Vir binaries, 24 reflection effect binaries, and 14 ellipsoidally modulated systems. Candidate selection for our high-speed observations was based on object location on the Gaia color-magnitude diagram and on intrinsic variability, which we estimate from the Gaia G flux uncertainties. Notable discoveries include a candidate 72 min period sdB+WD binary and two short period HW Vir binaries with periods around 67 min and 79 min, which includes the shortest-period eclipsing sdB+dM/BD discovered to date.
Om dit artikel te citeren:
Isaac D. Lopez, Alekzander Kosakowski, Brad N. Barlow & Thomas Kupfer, «New Hot Subdwarf Variables from Gaia eDR3», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 92 - Année 2023, Numéro 2 - Proceedings of the 10th Meeting on Hot Subdwarfs and Related Objects, 39-61 URL : https://popups.uliege.be/0037-9565/index.php?id=11220.
Over : Isaac D. Lopez
Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, USA and Department of Physics, High Point University, High Point, NC 27268, USA. Corresponding author: idlopez@iastate.edu
Over : Alekzander Kosakowski
Department of Physics and Astronomy, Texas Tech University, Lubbock, TX 79409, USA
Over : Brad N. Barlow
Department of Physics, High Point University, High Point, NC 27268, USA
Over : Thomas Kupfer
Department of Physics and Astronomy, Texas Tech University, Lubbock, TX 79409, USA
