DETERMINATION OF CHARACTERISTICS OF NEWLY DISCOVERED ECLIPSING BINARY 2MASS J18024395 +4003309 = VSX J180243.9+400331

I. L. Andronov, V. V. Breus, S. Zola

Анотація


During processing the observations of the intermediate polar 1RXS J180340.0+401214, obtained 26.05.2012 at the 60-cm telescope of the Mt. Suhora observatory (Krakow, Poland), variability of 2MASS J18024395 +4003309 was discovered. As this object was not listed in the "General Catalogue of Variale Stars" or "Variable Stars Index", we registered it as VSX J180243.9+400331. Additionally we used 189 separate observations from the Catalina Sky Survey spread over 7 years. The periodogram analysis yields the period of 0d.3348837±0d.0000002. The object was classified as the Algol-type eclipsing binary with a strong effect of ellipticity. The depths of the primary and secondary minima are nearly identical, which corresponds to a brightness (and maybe) mass ratio close to 1. The statistically optimal degree of the trigonometric polynomial n=4. The most recent minimum occurred at HJD 2456074.4904. The brightness range from our data is 16.56-17.52 (V), 16.18-17.08 (R). The NAV ("New Algol Variable") algorithm was applied for statistically optimal phenomenological modeling and determination of corresponding parameters.

Ключові слова


Stars; variable; binary; eclipsing; individual; VSX J180243.9+400331; USNO-B1.0 1300- 00287487; 1RXS J180340.0+401214

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Andronov I.L.: 1994, Odessa Astron. Publ., 7, 49.

Andronov I.L.: 2003, Astron.Soc.Pacif.Conf., 292, 391.

Andronov I.L.: 2012, Ap 55, 536; 2012arXiv1208.3655A.

Andronov I.L. et al.: 2010., Odessa Astron. Publ., 23, 8.

Andronov I.L., Baklanov A.V.: 2004, Astronomy School Reports, 5, 264, http://uavso.pochta.ru/mcv.

Andronov I.L., Kim Yonggi, Yoon Joh-Na, Breus V.V., Smecker-Hane T.A., Chinarova L.L., Han Wonyong: 2011, J. Korean Astron. Soc., 44, 89.

Breus V.V.: 2012, http://www.aavso.org/vsx/index.php ?view=detail.top&oid=282837.

Breus V.V. et. al.: 2012, Częstochowski Kalendarz Astronomiczny 2013, http://www.astronomianova.org/ publikacje.php

Drake A.J., et al.: 2009, Astrophys.J.,696, 870.

Henden A.:2005, ftp://ftp.aavso.org/public/calib/j1803.dat

Kholopov P.N. et al: 1985, General Catalogue of Variable Stars, 4-th edition. Moscow: Nauka.

Kim Y., Andronov I.L., Jeon J.B.: 2004, J.As.Sp.Sci., 21, 191.

Parimucha Š., et al.: 2011, New Astronomy, 17, 93.

Samus N.N., Durlevich O.V., Kazarovets E V., Kireeva N.N., Pastukhova E.N., Zharova A.V., et al. General Catalog of Variable Stars (GCVS database, Version 2012Jan), http://www.sai.msu.su/gcvs/gcvs/

“Variable Stars Index”: 2012, http://www.aavso.org/vsx

Vavilova I.B. et al.: 2012, Kinem.Phys.Cel.Bodies, 28, 8.




DOI: https://doi.org/10.18524/1810-4215.2012.25.83341

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