IMPROVED EPHEMERIS OF POORLY STUDIED ECLIPSING BINARY GSC 3950-00707 = 2MASS J20355082+5242136

Автор(и)

  • S. V. Savastru Richeleu Liceum, Odessa, Ukraine
  • V. I. Marsakova Odessa Mechnikov National University, Ukraine
  • K. D. Andrych Odessa Mechnikov National University, Ukraine
  • P. Dubovsky Vihorlat Observatory and Astronomical Observatory on Kolonica Saddle Slovak Republik, Slovakia

DOI:

https://doi.org/10.18524/1810-4215.2017.30.115819

Ключові слова:

eclipsing variable stars, W UMa – type, individual, GSC 3950-00707

Анотація

We made our CCD-observations of GSC 3950-00707 by using the telescope Celestron-14 of Vihorlat  Observatory  and  Astronomical  Observatory  on  Kolonica Saddle. The moments of minima were calculated by using  the  symmetrical  polynomial  fit.  We  also  analyzed the  observations  from  automated  surveys  ASAS-SN  and found  3  mean  minima  by  using  trigonometrical  polynomial  fit.  The  analysis  of  our  observations  and  data  from the surveys allows to conclude that it is the W UMa-type variable and its published period value is not accurate. We analyzed the O-C curve and corrected the elements. 

Посилання

Andrych K.D., Andronov I.L., Chinarova L.L. et al.: 2016, Odessa Astron. Publ., 28, p. 158.

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

Andronov I.L. et al.: 2017, ASPC, 511, 43.

Devlen A.: 2009, Peremennye Zvezdy Prilozhenie, 9, No. 23.

Kochanek C.S., Shappee B.J., Stanek K.Z. et al.: 2017,

Publications of the Astronomical Society of Pacific, 129, 104502.

Kudzej I., Dubovsky P.: 2017. Available at: http:// www.astrokolonica.sk/podujatia/variable/variable-2017.

Hȕbscher J.: 2016, Information Bulletin on Variable Stars, No. 6157, 1.

##submission.downloads##

Опубліковано

2017-11-21

Номер

Розділ

Астрофізика (зоряні атмосфери, взаємодіючі подвійні системи, змінні зорі)