Skip to main content
Log in

New photoelectric observations and light curve analysis of 44i bootis

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

Abstract

The eclipsing binary 44i Boo was observed photoelectrically using the 40 cm Cassegrain telescope at the Al-Battani Observatory.

The light curves were analysed using Fourier techniques of light changes in the frequency-domain, and new geometrical and physical elements have been obtained.

A new active period to be started in 1986 has been observed.

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

Access this article

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

Instant access to the full article PDF.

Similar content being viewed by others

References

  • Abrami, A. and Cester, B.: 1956,Publ. Oss. Astron. Trieste 270, 271.

    Google Scholar 

  • Al-Naimiy, H., Fleyeh, H., Al-Sikab, A., and Al-Razzaz, J.: 1986,Inf. Bull. Var. Stars, No. 2956.

  • Bergeat, J., Lunel, M., Sibille, F., and Van 't Veer, F.: 1972,Astron. Astrophys. 17, 215.

    Google Scholar 

  • Bergeat, J., Van 't Veer, F., Lunel, M., Garnier, R., Sibille, F., and Roux, S.: 1981,Astron. Astrophys. 94, 350.

    Google Scholar 

  • Binnendijk, L.: 1955,Astron. J. 60, 355.

    Google Scholar 

  • Binnendijk, L.: 1977,Vistas Astron. 21, 359.

    Google Scholar 

  • Breinhorst, R. A.: 1978,Acta Astron. 28, 579.

    Google Scholar 

  • Breinhorst, R. A. and Reinhardt, M.: 1974,Acta Astron. 24, 377.

    Google Scholar 

  • Brown, B. and Pinnington, E.: 1969,Astron. J. 74, 538.

    Google Scholar 

  • Catalano, S. and Saitta, T.: 1964,Mem. Soc. Astron. Ital. 35, 43.

    Google Scholar 

  • Cruddace, R. G. and Dupree, A.: 1984,Astrophys. J. 277, 263.

    Google Scholar 

  • Duerbeck, H. W.: 1975,Inf. Bull. Var. Stars, No. 1023.

  • Duerbeck, H. W.: 1978,Astron. Astrophys. Suppl. 32, 361.

    Google Scholar 

  • Duerbeck, H. W., Karimie, M. T., Hopp, U., Kiehl, M., and Witzigmann, S.: 1978,Inf. Bull. Var. Stars, No. 1497.

  • Eggen, O. J.: 1948,Astrophys. J. 208, 15.

    Google Scholar 

  • Genet, R., Kissell, K., and Roberts, G. C.: 1982,Inf. Bull. Var. Stars, No. 2074.

  • Gieseking, F.: 1977,Inf. Bull. Var. Stars, No. 1374.

  • Hopp, U. and Witzigmann, S.: 1982,Astrophys. Space Sci. 83, 171.

    Google Scholar 

  • Hopp, U., Witzigmann, S., and Kiehl, M.: 1977,Inf. Bull. Var. Stars, No. 1353.

  • Huruhata, M., Kitamura, M., Nakamura, T., and Tanabe, H.: 1957a,Ann. Tokyo Astron. Obs. 5, 40.

    Google Scholar 

  • Huruhuta, M., Kitamura, M., Nakamura, T., and Tanabe, H.: 1957b,Ann. Tokyo Astron. Obs. 5, 31.

    Google Scholar 

  • Jameson, R. F. and Akinci, R.: 1979,Monthly Notices Roy. Astron. Soc. 188, 421.

    Google Scholar 

  • Kadouri, T. H., Al-Roubaia, A. H., and Mutter, A. A.: 1986,J. Space Astron. Res. 3, 13.

    Google Scholar 

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

    Google Scholar 

  • Kopal, Z.: 1979,Language of the Stars, D. Reidel Publ. Co., Dordrecht, Holland.

    Google Scholar 

  • Kopal, Z.: 1982a,Astrophys. Space Sci. 81, 123.

    Google Scholar 

  • Kopal, Z.: 1982b,Astrophys. Space Sci. 81, 411.

    Google Scholar 

  • Kopal, Z.: 1986,Vistas Astron. 29, 295.

    Google Scholar 

  • Kurpinska, M. and Van 't Veer, F.: 1970,Astron. Astrophys. 4, 253.

    Google Scholar 

  • Kwee, K. K. and Van Woerden, H.: 1956,Bull. Astron. Inst. Neth. 12, 327.

    Google Scholar 

  • Mikolajewska, J. and Mikolajewski, M.: 1980,Inf. Bull. Var. Stars, No. 1812.

  • Mullan, D. J.: 1975,Astrophys. J. 198, 563.

    Google Scholar 

  • Nikonov, V. B.: 1940,Bull. Abstumani 4, 1.

    Google Scholar 

  • Popper, D. M.: 1943,Astrophys. J. 97, 394.

    Google Scholar 

  • Robb, R. and Milone, E.: 1982,Inf. Bull. Var. Stars, No. 2187.

  • Rovithis, P. and Livaniou, R.: 1981,Astrophys. Space Sci. 76, 351.

    Google Scholar 

  • Rucinski, S. and Vilhu, O.: 1983,Monthly Notices Roy. Astron. Soc. 202, 1221.

    Google Scholar 

  • Sahade, J.: 1987, (priv. comm.)

  • Schilt, J.: 1926,Astrophys. J. 64, 215.

    Google Scholar 

  • Schmidt, H. and Schrick, K. W.: 1957,Z. Astrophys. 43, 195.

    Google Scholar 

  • Schneller, H.: 1966,Mitt. Veränderl. Sterne 4, 23.

    Google Scholar 

  • Semeniuk, I.: 1963,Acta Astron. 13, 113.

    Google Scholar 

  • Shapley, H. and Calder, W.: 1938,Harvard Bull., No. 907, 13.

    Google Scholar 

  • Smart, W. M.: 1931,Textbook on Spherical Astronomy, Cambridge University Press, London.

    Google Scholar 

  • Wehlau, W. and Leung, K. C.: 1962,J. Roy. Astron. Soc. Can. 56, 105.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Al-Naimiy, H.M.K., Fleyeh, H.A., Al-Sikab, A.O. et al. New photoelectric observations and light curve analysis of 44i bootis. Astrophys Space Sci 151, 135–147 (1989). https://doi.org/10.1007/BF00643635

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00643635

Keywords

Navigation