PHOTOMETRICAL STUDY OF CLOSE BINARY SYSTEM V841 Cyg

Автор(и)

  • O. G. Sergienko V.O. Suckomlinsky Mykolaiv National University, Україна
  • D. V. Bodryagin V.O. Suckomlinsky Mykolaiv National University, Україна
  • E. A. Panko V.O. Suckomlinsky Mykolaiv National University, Україна

DOI:

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

Ключові слова:

Stars, eclipsing, close binary stars, individual, V841 Cyg

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.

 

Посилання

Agerer F. & Huebscher J.: 1998, IBVS, 4606, 1. Agerer F. & Huebscher J.: 2001, IBVS, 5016, 1.

Brancewicz H.K., Dworak T.Z.: 1980, Acta Astr., 30, 501.

Eastman J., Siverd R., Gaudi B.S.: 2010, Publ. Astron. Soc. Pac., 122, 935.

Droege T.F., Richmond M.W., Sallman M.P. et. al.: 2006, Publ. Astron. Soc. Pac., 118, 1666, on-line data: http://spiff.rit.edu/tass/patches/

Kreiner J.M., Kim C.H., Nha L.S. et al.: 2000, “An Atlas of Diagrams of Eclipsing Binary Stars”, Krakow, Poland, on-line data: http://www.as.up. krakow. pl/o-c/index.php3

Motl D.: 2003-12, http://c-munipack.souceforge.net

Lucy L.B. & Wilson R.E.: 1979, ApJ, 231, 502. O-C gateway, on-line data: http://var.astro.cz /ocgate/ocgate.php?star=V%20841%20Cyg

Ogmen Y.: 2009, http://www.aavso.org/apps/web obs/results/?star=V841+CYG

Panko E., Flin P., Pikhun A.: 2006, ApSS, 305, 385.

Pickles A., Depagne E.: 2010, Publ. Astron. Soc. Pac. 122, 1437.

Samus N.N., Durlevich O.V., Kazarovets E.V. et al.: 2012, General Catalog of Variable Stars, GCVS (GCVS database), Version 2012 Feb., http://www.sai.msu.su/groups/cluster/gcvs/gcvs/ iii/html/.

Shaw J.S.: 1994, Mem. Soc. Astr. It., 65, 95.

Turner D.G., Panko E.A., Sergienko O.G. et al.: 2008, The Observatory, 128, 2.

van Hamme W.: 1993, AJ, 106, 2096.

Variable Star and Exoplanet Section of Czech Astronomical Society: http://var2.astro.cz/

Virnina N.A., Panko E.A., Sergienko O.G. et al.: 2010, OAP, 23, 148.

Wachmann A.A.: 1963, Astron. Abh. Hamburg. Sternw., 6, 97.

##submission.downloads##

Опубліковано

2013-11-15

Номер

Том 26 № 2 (2013)

Розділ

Статті

Ліцензія

Авторське право (c) 2013 Odessa Astronomical Publications

Creative Commons License

Ця робота ліцензується відповідно до Creative Commons Attribution-NonCommercial 4.0 International License.

Відповідно Закону України про авторське право і суміжні права N 3792-XII від 23 грудня 1993 року