Skip to main content
SpringerLink
Log in

Investigation of atmosphere nonstationarity in the supergiant 55Cyg. I. Temporal line profile variability

  • Published:
Astrophysical Bulletin Aims and scope Submit manuscript

Abstract

The CCD spectra taken with echelle spectrographs of the 2-m telescope of the Shemakha Astrophysical Observatory of the National Academy of Sciences of Azerbaijan and the 1-m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences are used to study the line profile variations in the spectrum of the hot supergiant 55Cyg. The variability of the radial velocity and profiles of the lines of heavy elements is shown to be due to radial pulsation type motions. The corresponding variations for He I lines are due to nonradial pulsations. In the case of the H β and H α lines the pattern and behavior of variations differ for different observing periods. The variability of these lines is mostly due to the photometric and positional variability of the absorption and emission components of their profiles. The profiles of these lines show additional emission components, which move from the blue toward the red line wing. Such a behavior is indicative of the clumpy structure of the stellar envelope.

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

  1. N. Markova and J. Puls, Astronom. and Astrophys. 478, 823(2008).

    Article  ADS  Google Scholar 

  2. A. Underhill, Publ. Dom. Astrophys. Obs. Victoria 11, 353 (1960).

    ADS  Google Scholar 

  3. J. B. Hatchings, Monthly Notices Roy. Astronom. Soc. 147 161 (1970).

    ADS  Google Scholar 

  4. P. Granès and R. Herman, in Proc. Third Colloquium on Astrophysics, Colloquium on Supergiant Stars, Ed. by M. Hack (1971), p. 58.

  5. P. Granès, Astronom. and Astrophys. 45, 343 (1975).

    ADS  Google Scholar 

  6. C. C. Beals, Publ. Dom. Astrophys. Obs. Victoria 9, 1 (1955).

    ADS  Google Scholar 

  7. G. Hill, R. W. Hilditch, and E. L. Pfannenschmidt, Pub. Dom. Astrophys. Obs. Victoria 15, 35 (1976).

    Google Scholar 

  8. F. Rufner and P. Bartholdi, Astronom. and Astrophys. Suppl. Ser. 48, 503 (1982).

    ADS  Google Scholar 

  9. J. R. Percy and D. L. Welch, Publ. Astron. Soc. Pac. 95, 491 (1983).

    Article  ADS  Google Scholar 

  10. J. R. Percy, L. C. Bruce, A. D. Drukier, et. al., Publ. Astron. Soc. Pac. 100, 1555 (1988).

    Article  ADS  Google Scholar 

  11. J. R. Percy, J. Harlow, A. S. Kazarine, et. al., Publ. Astron. Soc. Pac. 109, 1215 (1997).

    Article  ADS  Google Scholar 

  12. K. Pavlovski, P. Harmanec, H. Božić, et. al., Astronom. and Astrophys. Suppl. Ser. 125, 75 (1997).

    Article  ADS  Google Scholar 

  13. C. Koen and L. Eyer, Monthly Notices Roy. Astronom. Soc. 331, 45 (2002).

    Article  ADS  Google Scholar 

  14. E. L. Chentsov and A. N. Sarkisyan, Astrophysical Bulletin 62, 257 (2007).

    Article  ADS  Google Scholar 

  15. G. A. Galazutdinov, I. Han, and J. Krełowski, Astrophys. J. 629, 299 (2005).

    Article  ADS  Google Scholar 

  16. G. A. Galazutdinov (private communication).

  17. R. L. Snell and P. A. Vanden Bout, Astrophys. J. 250, 160 (1981).

    Article  ADS  Google Scholar 

  18. J.-C. Hsu and M. Breger, Astrophys. J. 262, 732 (1982).

    Article  ADS  Google Scholar 

  19. G. Viraghalmy, Inform. Bull. Var. Stars 2938, 1 (1986).

    ADS  Google Scholar 

  20. C. Leitherer and F. J. Zickgraf, Astronom. and Astrophys. 174, 103 (1987).

    ADS  Google Scholar 

  21. L. H. Aller, Astrophys. J. 123, 133 (1956).

    Article  ADS  Google Scholar 

  22. D.R. Gies and D. L. Lambert, Astrophys. J. 387, 673 (1992).

    Article  ADS  Google Scholar 

  23. N. D. McErlean, D. J. Lennon, and P. L. Dufton, Astronom. and Astrophys. 349, 553 (1999).

    ADS  Google Scholar 

  24. P. A. Crowther, D. J. Lennon, and N. R. Walborn, Astronom. and Astrophys. 446, 279 (2006).

    Article  ADS  Google Scholar 

  25. S. C. Searle, R. K. Prinja, D. Massa, and R. Ryans, Astronom. and Astrophys. 481, 777 (2008).

    Article  ADS  Google Scholar 

  26. F. A. Musaev, Astron. Lett. 19, 315 (1993).

    ADS  Google Scholar 

  27. A. Kh. Rzaev, N. O. Gasanov, Kh.M. Mikailov, et al., Circ. Shamakhy Astrophys. Obs. 95, 3 (1999).

    Google Scholar 

  28. G A. Galazutdinov, Preprint SAO RAS 92, (1992).

  29. A. Kh. Rzaev, Kh. M. Mikailov, M. E. Shyukyurov, et al., Circ. Shamakhy Astrophys. Obs. 97, 3 (1999).

    Google Scholar 

  30. D. J. Lennon, P. L. Dufton, and A. Fitzsimmons, Astronom. and Astrophys. Suppl. Ser. 94, 569 (1992).

    ADS  Google Scholar 

  31. N. A. Sakhibullin and V. V. Shimanskii, Astron. Rep. 41, 378 (1997).

    ADS  Google Scholar 

  32. F. Castelli and R. L. Kurucz, IAUS 210, A20 (2004).

    Google Scholar 

  33. A. Kh. Rzaev, Astrophysical Bulletin 66, 54 (2011).

    Article  ADS  Google Scholar 

  34. A. Kh. Rzaev, Astrophysical Bulletin 62, 52 (2007).

    Article  ADS  Google Scholar 

  35. A. Kh. Rzaev, Astrophysical Bulletin 63, 23 (2008).

    Article  ADS  Google Scholar 

  36. W. Unno, Y. Osaki, H. Ando, and H. Shibahashi, Nonradial Oscillations of stars (University of Tokyo Press, Tokyo, 1979).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, 369167, Russia

    A. Kh. Rzaev

Authors
  1. A. Kh. Rzaev
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to A. Kh. Rzaev.

Additional information

Original Russian Text © A.Kh. Rzaev, 2012, published in Astrofizicheskii Byulleten, 2012, Vol. 67, No. 3, pp. 296–307.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Rzaev, A.K. Investigation of atmosphere nonstationarity in the supergiant 55Cyg. I. Temporal line profile variability. Astrophys. Bull. 67, 282–293 (2012). https://doi.org/10.1134/S1990341312030054

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1134/S1990341312030054

Key words

Search

Navigation