Skip to main content
SpringerLink
Log in

Synthetic light curves of two eclipsing binary systems, U Sge and AW UMa

  • Published:
Astrophysics and Space Science Aims and scope Submit manuscript

Abstract

Photometric curve fits have been investigated by means of numerical quadratures to develop theoretical light curves appropriate to stars built up in accordance with the Roche model. The method has been applied previously to β Per (Al-Naimiy and Budding, 1977) on the basis of available observations in red and infrared, while presently applied to two systems with contact components.

  1. (i)

    U Sge, spherical primary totally eclipsed by a contact component secondary. Improved photometric elements of the system have been found, and compared with those obtained by Kopal's method in the frequency domain. The outcome of the curve fitting corresponds well with the results of an analysis in the frequency domain.

  2. (ii)

    AW UMa, exhibiting the shallowest minima known for totally eclipsing W UMa systems. The physical and geometrical elements of the system have been found, and the contact nature of the two components confirmed.

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

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Allen, C. W.: 1973,Astrophysical Quantities, Athlone Press, London.

    Google Scholar 

  • Al-Naimiy, H. M. K.: 1977a,Astrophys. Space Sci. 46, 261.

    Google Scholar 

  • Al-Naimiy, H. M. K.: 1977b, Ph.D. Thesis, University of Manchester.

  • Al-Naimiy, H. M. K.: 1977c,Astrophys. Space Sci. (in press).

  • Al-Naimiy, H. M. K. and Budding, E.: 1977,Astrophys. Space Sci. 51, 265.

    Google Scholar 

  • Berthier, E.: 1975,Astron. Astrophys. 40, 237.

    Google Scholar 

  • Budding, E.: 1973,Astrophys. Space Sci. 22, 87.

    Google Scholar 

  • Cester, B. and Pucillo, M.: 1972,Mem. Soc. Astron. Ital. 43, 501.

    Google Scholar 

  • Code, A. D., Davis, J., Bless, R. C. and Brown, R. H.: 1974,Wisconsin Astrophys. 2.

  • Dworak, T. Z. and Kurpińska, M.: 1975,Acta Astron. 25, 417.

    Google Scholar 

  • Eggen, O. J.: 1967,Mem. Roy. Astron. Soc. 70, 111.

    Google Scholar 

  • Fowler, M.: 1916,Publ. Allegheny Obs. 3, 11.

    Google Scholar 

  • Hill, G. and Hutchings, J. B.: 1970,Astrophys. J. 162, 265.

    Google Scholar 

  • Hill, G. and Hutchings, J. B.: 1973,Contr. Dom. Astrophys. Obs., Victoria 20, 123.

    Google Scholar 

  • Irwin, J. B.: 1947,Astron. J. 52, 125.

    Google Scholar 

  • Joy, A. H.: 1930,Astrophys. J. 71, 336.

    Google Scholar 

  • Kalish, M. S.: 1965,Publ. Astron. Soc. Pacific 77, 36.

    Google Scholar 

  • Kopal, Z.: 1942,Proc. Am. Phil. Soc. 85 399 (Harv. Rep., Ser. 11 No. 1).

    Google Scholar 

  • Kopal, Z.: 1959,Close Binary Systems, Chapman and Hall Ltd, London and New York.

    Google Scholar 

  • Kopal, Z.: 1975a,Astrophys. Space Sci. 35, 159 (Paper II).

    Google Scholar 

  • Kopal, Z.: 1975b,Astrophys. Space Sci. 38, 191 (Paper V).

    Google Scholar 

  • Kopal, Z.: 1976,Astrophys. Space Sci. 45, 269 (Paper IX).

    Google Scholar 

  • Kopal, Z. and Demircan, O.: 1977,Astrophys. Space Sci. (in press) (Paper XIV).

  • Kopal, Z. and Kitamura, M.: 1968, inAdv. Astron. Astrophys. 6, 125.

    Google Scholar 

  • Kopal, Z. and Shapley, M. B.: 1956,Jodrell Bank Ann. 1, 141.

    Google Scholar 

  • Lucy, L. B.: 1968,Astrophys. J. 153, 877.

    Google Scholar 

  • Mauder, H.: 1972,Astron. Astrophys. 17, 1.

    Google Scholar 

  • McNamara, D. H.: 1951,Astrophys. J. 114, 513.

    Google Scholar 

  • McNamara, D. H. and Feltz, K. A., Jr.: 1976,Publ. Astron. Soc. Pacific 88, 688.

    Google Scholar 

  • Mochnacki, S. W. and Doughty, N. A.: 1972,Monthly Notices roy. Astron. Soc. 156, 51.

    Google Scholar 

  • Morton, D. C. and Adams, T. F.: 1968,Astrophys. J. 151, 611.

    Google Scholar 

  • Nagy, T. A.: 1977,Publ. Astron. Soc. Pacific 89, 373.

    Google Scholar 

  • Paczyński, B.: 1963,Astron. J. 68, 639.

    Google Scholar 

  • Paczyński, B.: 1964,Astron. J. 69, 124.

    Google Scholar 

  • Petro, L. D.: 1976, Ph.D. Thesis (unpublished).

  • Plavec, M. and Grygar, J.: 1965,Kleine Veröffentl. Remeis Sternwarte Bamberg 4, 213.

    Google Scholar 

  • Ruciński, S. M.: 1969,Acta Astron. 19, 245.

    Google Scholar 

  • Ruciński, S. M.: 1974,Acta Astron. 24, 119.

    Google Scholar 

  • Schwabe, F.: 1901,Astron. Nachrichten 157, 79.

    Google Scholar 

  • Struve, O.: 1949,Monthly Notices Roy. Astron. Soc. 109, 487.

    Google Scholar 

  • Tsouroplis, A. G.: 1977,Astrophys. Space Sci. 47, 361.

    Google Scholar 

  • Wilson, R. E.: 1973, in A. H. Batten (ed.), ‘Extended Atmospheres and Circumstellar Matter in Spectroscopic Binary Systems’,IAU Symp. 51, 198.

  • Wilson, R. E. and Devinney, E. J.: 1971,Astrophys. J. 166, 605.

    Google Scholar 

  • Wood, D. B.: 1971,Astron. J. 76, No. 8, 701.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Dept. of Astronomy, University of Manchester, England

    Hamid M. K. Al-Naimiy

Authors
  1. Hamid M. K. Al-Naimiy
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Al-Naimiy, H.M.K. Synthetic light curves of two eclipsing binary systems, U Sge and AW UMa. Astrophys Space Sci 56, 219–238 (1978). https://doi.org/10.1007/BF00643469

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00643469

Keywords

Search

Navigation