Orbital Solution of Some Contact Binaries

In the present paper we use a complete set of CCD observations to model the light curves of the new W UMa systems, GSC 4835-1716 and USNO-A2.0_1275-10813091. The light curve modeling is performed by means of the W-D code where Kurucz (1993) model atmospheres are implemented. We treated the asymmetry of the observed curves using a spotted model. Physical parameters of the accepted model revealed that primary components of the studied systems are massive and hotter than the secondary ones. The components of the system GSC 4835-1716 are found to be on or near the TAMS track while the components of the system USNO-A2.0_1275-10813091, lie between the ZAMS and TAMS evolution tracks.

This is a preview of subscription content, log in to check access.

References

  1. 1.

    A. Haroon, A. Essam, and H. Basurah, Astrophysics, 61, 458, 2018.

    ADS  Article  Google Scholar 

  2. 2.

    M. I. Nouh and M. M. Elkhateeb, Astrophysics, 63, 2020, in press.

  3. 3.

    M. M. Elkhateeb, M. I. Nouh, S. Saad et al., New Astron., 32, 10, 2014.

    ADS  Article  Google Scholar 

  4. 4.

    M. Elkhateeb, S. Saad, M. Nouh et al., New Astron., 28, 85, 2014.

    ADS  Article  Google Scholar 

  5. 5.

    M. M. Elkhateeb, M. I. Nouh, and S. M. Saad, New Astron., 26, 102, 2014.

    ADS  Article  Google Scholar 

  6. 6.

    M. M. Elkhateeb and M. I. Nouh, New Astron., 34, 47, 2015.

    ADS  Article  Google Scholar 

  7. 7.

    M. M. Elkhateeb, M. I. Nouh, and R. H. Nelson, New Astron., 35, 1, 2015.

    ADS  Article  Google Scholar 

  8. 8.

    M. M. Elkhateeb and M. I. Nouh, New Astron., 49, 22, 2016.

    ADS  Article  Google Scholar 

  9. 9.

    A. Liakos and P. Niarchos, Inf. Bull. Var. Stars, 6100, 2014.

  10. 10.

    K. Gazeas, Inf. Bull. Var. Stars, 6200, 2015.

  11. 11.

    R. Nelson, http://members.shaw.ca/bob.nelson/software1.htm, 2009.

  12. 12.

    R. Kurucz, in: E. Milon, (Ed.), Light Curve Modeling of Eclipsing Binary Stars. Springer, 1993.

  13. 13.

    D. Bradstreet and D. Steelman, AAS, 201, 7502, 2004.

    ADS  Google Scholar 

  14. 14.

    L. Lucy, Z.F. Astrophys., 65, 89, 1967.

  15. 15.

    S. Rucinski, Acta Astron., 19, 156, 1969.

    Google Scholar 

  16. 16.

    W. Van Hamme, Astron. J., 106, 2096, 1993.

    ADS  Article  Google Scholar 

  17. 17.

    D. Popper, Ann. Rev. Astron. Astrophys., 18, 115, 1980.

    ADS  Article  Google Scholar 

  18. 18.

    P. Harmanec, Bull. Astron. Inst. Czech., 39, 329, 1988.

    ADS  Google Scholar 

  19. 19.

    L. Girardi, A. Bressan, G. Bretelli et al., Astron. Astrophys. Suppl., 141, 371, 2000.

    ADS  Article  Google Scholar 

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to M. M. Elkhateeb.

Additional information

Published in Astrofizika, Vol. 63, No. 2, pp. 217-226 (May 2020).

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Elkhateeb, M.M. Orbital Solution of Some Contact Binaries. Astrophysics 63, 190–199 (2020). https://doi.org/10.1007/s10511-020-09625-4

Download citation

Keywords

  • eclipsing binaries
  • W UMa
  • evolution
  • light curve analysis