1. New Galactic β Lyrae-type Binaries Showing Superorbital Photometric Cycles
- Author
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Gonzalo Rojas García, Igor Soszyński, Patrik Iwanek, Nicola Astudillo-Defru, Paula Gorrini, Ronald E. Mennickent, and Juan Garcés
- Subjects
Physics ,Beta Lyrae ,Milky Way ,Astronomy and Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,Type (model theory) ,Astrophysics - Astrophysics of Galaxies ,Gravitational lens ,Astrophysics - Solar and Stellar Astrophysics ,Space and Planetary Science ,Bulge ,Binary star ,Astrophysics::Solar and Stellar Astrophysics ,Variable star ,Astrophysics::Galaxy Astrophysics ,dPVS - Abstract
We present the discovery of 32 new double periodic variables (DPVs) located toward the Galactic bulge. We found these objects among the nearly half a million binary stars published by the Optical Gravitational Lensing Experiment project. With this discovery, we increase the number of known DPVs in the Milky Way by a factor of 2. The new set of DPVs contains 31 eclipsing binaries and one ellipsoidal variable star. The orbital periods cover the range from 1.6 to 26 days, while long periods are detected between 47 and 1144 days. Our analysis confirms a known correlation between orbital and long periods that is also observed in similar systems in the Magellanic Clouds., Comment: 8 pages, 7 figures
- Published
- 2021
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