Timing of AR CrB eclipses
V. S. KozyrevaMain Astronomical Observatory, National Academy of Sciences of Ukraine, 27, Akademika Zabolotnoho ulitsa, Kyiv, 03143, UkraineT. R. IrsmambetovaM. V. Lomonosov Moscow State University, P. K. Sternberg Astronomical Institute, 13, Universitetskij prospect, Moscow, 119991, RussiaM. IbrahimovInstitute of Astronomy, Russian Academy of Sciences, 48 Pyatnitskaya st., 119017, Moscow, RussiaV. KrushevskaMain Astronomical Observatory, National Academy of Sciences of Ukraine, 27, Akademika Zabolotnoho ulitsa, Kyiv, 03143, UkraineYu. KuznyetsovaMain Astronomical ObservatoryA. V. KhalikovaUlugh Beg Astronomical Institute, Uzbek Academy of Sciences, 33, Astronomicheskaya ulitsa, Tashkent, 100052, UzbekistanO. U. ParmonovUlugh Beg Astronomical Institute, Uzbek Academy of Sciences, 33, Astronomicheskaya ulitsa, Tashkent, 100052, UzbekistanR. KarimovUlugh Beg Astronomical Institute, Uzbek Academy of Sciences, 33, Astronomicheskaya ulitsa, Tashkent, 100052, UzbekistanА. И. БогомазовUlugh Beg Astronomical Institute, Uzbek Academy of Sciences, 33, Astronomicheskaya ulitsa, Tashkent, 100052, UzbekistanB. L. SatovskiiAstroTel Ltd., 1A, Nizhegorodskaya ulitsa, Moscow, 109147, RussiaА. В. ТутуковInstitute of Astronomy
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AR CrB is a short-period low-mass eclipsing binary. We conducted photometric observations of the system in 2013, 2014, 2016, 2017, and obtained times of its light curves minima. The timing of eclipses (our times of minima combined with data from the literature) shows that the orbital period of AR CrB could possess periodical variations that can be explained by the gravitational influence of a third companion in a highly eccentric orbit around the central binary.
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