Continued Search of RR Lyrae Binary Systems Towards the Galactic Bulge

Gergely Hajdu, Márcio Catelan, Johanna Jurcsik and Ian B. Thompson

Binary systems provide the most straightforward way of measuring the mass of individual stars, and through it, constraining the models of stellar evolution. Unfortunately, very few binary candidates containing RR Lyrae variables have been found previously. We continue our search for such systems in the photometric data of the OGLE survey towards the Galactic bulge, finding more than 30 such candidates. Furthermore, we show that our ongoing radial velocity follow-up observations have the potential to confirm or refute some of our candidates in the near future.

Proceedings of the Polish Astronomical Society, vol. 6, 248-252 (2018)

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