PHOTOMETRICAL STUDY OF CLOSE BINARY SYSTEM V841 Cyg

O. G. Sergienko, D. V. Bodryagin, E. A. Panko

Анотація


We present the results of research of scantily explored close binary system V841 Cyg with possible period variations. It was attributed as /3 Lyr and as near contact binary star. We obtained light curve of the star in July 2013 in V-band. Both eclipses are partial, the depths of primary and secondary min­ima are 0m.53 and 0m.20. Light curve has feature near primary minimum: practically horizontal parts in phases ±(0.1 — 0.16). We found new time minima: HJDI = 2456504.48122, BJDH = 2456493.44562.

We obtained new parameters of binary system using Binary Maker 3 package. The system contains from A6 V+G5 V stars with mass ratio about 0.49. The components have temperatures TeffI = 8550°, TeffI = 5500° and estimated masses MI = 1.85, MII = 0.90; they fill own Roshe lobes on 95% and 92% correspondingly and both components are de­formed. The distance between components is about 5R©, the distance between component surfaces is about 1.4R©. We confirm the V841 Cyg classification as is NCB system, with not significant mass transfer.

 


Ключові слова


Stars: eclipsing; close binary stars; individual: V841 Cyg

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DOI: https://doi.org/10.18524/1810-4215.2013.26.83202

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