Skip to main content
SpringerLink
Log in

The longitudinal distribution of sunspots and the RS CVn starspot model

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

Abstract

The longitudinal distribution of the sunspots has been investigated by using the observations made at the University Observatory of Istanbul in 1979. In order to take into account the activity as a whole, we obtained a new weighting system which depends on the area of spots and used it in our calculations. Differential rotation appeared to effect the considered distribution. It was determined that this longitudinal distribution of spots is not uniform but forms two maxima for two different longitudes. The obtained result verifies one of the main assumptions had been proposed in the starspot model in which accounts for the distortion wave appeared in the light curves of RS CVn-type binaries.

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

  • Bopp, B. W. and Noah, P. V.: 1980,Publ. Astron. Soc. Pacific 92, 717.

    Google Scholar 

  • Bumba, V., and Howard, R.: 1965,Astrophys. J. 141, 1492.

    Google Scholar 

  • Hall, D. S.: 1972,Publ. Astron. Soc. Pacific 84, 323.

    Google Scholar 

  • Lopez, M. A.: 1977,Bol. Astron. Obs. Madrid 10, No. 2.

  • Lopez, M. A.: 1978,Bol. Astron. Obs. Madrid 10, No. 3.

  • Losh, H. M.: 1939,Publ. Obs. Univ. Michigan 7, 127.

    Google Scholar 

  • Staněk, W.: 1972,Sol. Phys. 27, 89.

    Google Scholar 

  • Trotter, D. E. and Billings, D. E.: 1962,Astrophys. J. 136, 1140.

    Google Scholar 

  • Warwick, C. S.: 1965,Astrophys. J. 141, 500.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Dept of Astronomy, University of Istanbul, Istanbul, Turkey

    T. Özkan

  2. Dept of Astronomy, University of Ankara, Ankara, Turkey

    E. Derman

Authors
  1. T. Özkan
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. E. Derman
    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

Özkan, T., Derman, E. The longitudinal distribution of sunspots and the RS CVn starspot model. Astrophys Space Sci 87, 211–216 (1982). https://doi.org/10.1007/BF00648917

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00648917

Keywords

Search

Navigation