Abstract
The paper describes a target setting of searching for apsidal motion in 21 eclipsing binaries. We estimate the capability of its determination for the systems of interest in the coming years, as well as present results of observations in 2009–2018, in which the minima of the light curves of these stars have been obtained. The accuracy of orbital period determination of the studied binaries is 10–100 times greater in comparison with the previously available data. For two systems, photometric elements are determined. As a by-product of the study, a close eclipsing binary of the W UMa type was discovered.
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Acknowledgments
This research has made use of the NASA/IPAC Infrared Science Archive operated by the Jet Propulsion Laboratory, California Institute of Technology, under the contract with the National Aeronautics and Space Administration.
This research has made use of the SIMBAD database operated at CDS, Strasbourg, France.
This research has made use of the NASA’s Astrophysics Data System.
Funding
The work of A. V. Kusakin is supported within project No. BR05236322 “Studies of physical processes in extragalactic and galactic objects and their subsystems” of the Ministry of Education and Science of the Republic of Kazakhstan.
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The authors declare that there is no conflict of interest regarding the publication of this paper.
Russian Text © The Author(s), 2019, published in Astrofizicheskii Byulleten’, 2019, Vol. 74, No. 4, pp. 437–443.
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Kozyreva, V.S., Kusakin, A.V., Krajci, T. et al. Photometric Studies of 21 Eclipsing Binaries with Eccentric Orbits. Astrophys. Bull. 74, 424–430 (2019). https://doi.org/10.1134/S1990341319040084
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DOI: https://doi.org/10.1134/S1990341319040084