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Physical Parameters of the Eclipsing System V2647 Cyg

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Abstract

The first high-accuracy CCD UBV RI (RI)C light curves of the recently discovered eclipsing binary V2647 Cyg = GSC 3612 1565 () have been obtained. The photometric light curves are solved and the physical parameters of the component stars are derived. The orbit of the binary is circular, not eccentric as previously thought. Its period is two-thirds of the previously accepted value. The high accuracy of the observations has made it possible to determine reliable parameter for the binary. Obtained photometric parallax is , in full agreement with the GAIA direct parallax measurement. If the optical companion at an angular separation of is gravitationally bound to the binary, the system should be considered hierarchical.

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Acknowledgments

This study has used the SIMBAD database supported by the Strasbourg Astronomical Data Center (France) and the ADS bibliographic service (NASA, USA). Our special thanks to the anonymous referee whose comments enabled us to correct imperfections and considerably improve the quality of the presentation.

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Authors and Affiliations

  1. Sternberg Astronomical Institute, Lomonosov Moscow State University, Moscow, 119992, Russia

    A. S. Kravtsova & I. M. Volkov

  2. Institute of Astronomy, Russian Academy of Sciences, Moscow, 119017, Russia

    I. M. Volkov

  3. Astronomical Institute, Slovak Academy of Sciences, PO Box 18, Tatranská Lomnica, 059 60, Slovak Republic

    D. Chochol

Authors
  1. A. S. Kravtsova
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  2. I. M. Volkov
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  3. D. Chochol
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Corresponding authors

Correspondence to A. S. Kravtsova, I. M. Volkov or D. Chochol.

Additional information

Russian Text © The Author(s), 2019, published in Astronomicheskii Zhurnal, 2019, Vol. 96, No. 6, pp. 508–522.

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Kravtsova, A.S., Volkov, I.M. & Chochol, D. Physical Parameters of the Eclipsing System V2647 Cyg. Astron. Rep. 63, 495–507 (2019). https://doi.org/10.1134/S1063772919060015

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  • DOI: https://doi.org/10.1134/S1063772919060015

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