Timing of eclipsing binary V0873 Per: a third body candidate

• Published in: Astrophysics and space science 2016, Vol.361 (1), p.1-6, Article 4
• Main Authors: Bogomazov, A. I., Ibrahimov, M. A., Satovskii, B. L., Kozyreva, V. S., Irsmambetova, T. R., Krushevska, V. N., Kuznyetsova, Y. G., Gaynullina, E. R., Karimov, R. G., Ehgamberdiev, S. A., Tutukov, A. V.
• Format: Article
• Language: English
• Subjects: Astrobiology; Astronomy; Astrophysics; Astrophysics and Astroparticles; Binary stars; Cosmology; Double stars; Eclipses; Gravity effects; Mathematical analysis; Minima; Observations and Techniques; Orbits; Original Article; Periodic variations; Physics; Physics and Astronomy; Space Exploration and Astronautics; Space Sciences (including Extraterrestrial Physics; Tables (data); Texts; Time measurements
• ISSN: 0004-640X; 1572-946X
• DOI: 10.1007/s10509-015-2591-1

We analyze a set of moments of minima of eclipsing variable V0873 Per. V0873 Per is a short-period low-mass binary star. Data about moments of minima of V0873 Per were taken from the literature and our observations during 2013–2014. Our aim is to test the system on existence of new bodies using timing of minima of eclipses. We found a periodic variation of orbital period of V0873 Per. This variation can be explained by the gravitational influence of a third companion on the central binary star. The mass of the third body candidate is ≈ 0.2 M ⊙ , and its orbital period is ≈ 300 days . The paper also includes a table with moments of minima calculated from our observations, which can be used in future investigations of V0873 Per.