Skip to main content
SpringerLink
Log in

Fast line-profile variability in the spectra of O stars

  • Published:
Astronomy Letters Aims and scope Submit manuscript

Abstract

A program of the search for and analysis of profile variability in the spectra of bright O supergiants with a time resolution of 5–30 min is described. Preliminary results of the spectroscopic observations of the stars λ Ori, α Cam, and 19 Cep with the 1-m Special Astrophysical Observatory telescope in 2001 are presented. Line-profile variability was detected in the spectra of all the stars studied; variability in the Hα and C III λ5696 Å lines in the spectrum of λ Ori has been found for the first time. The variability amplitude is 4–5% for 19 Cep and 1–2% for α Cam and λ Ori on time scales from several hours to 3 or 4 days, and the width of the variable features reaches 2 Å (100 km s−1). We detected cyclical variations in the He II λ4686 and C III λ5696 line profiles in the spectrum of λ Ori on time scales of 1.3–1.6 days. Rapid profile variations on time scales of 3.5–7 h were found in the violet parts of the Hα and He I λ4715 line profiles in the spectrum of λ Ori A.

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. I. I. Antokhin, A. F. Kholtygin, and A. M. Cherepashchuk, Astron. Zh. 65, 558 (1988) [Sov. Astron. 32, 285 (1988)].

    ADS  Google Scholar 

  2. I. I. Antokhin, T. Nugis, and A. M. Cherepashchuk, Astron. Zh. 69, 516 (1992) [Sov. Astron. 36, 260 (1992 )].

    ADS  Google Scholar 

  3. Z. Brandt, Statistical Methods of Monitoring Analysis (Mir, Moscow, 1975), p. 87.

    Google Scholar 

  4. P. S. Conti, E. S. Leep, and J. J. Lorre, Astrophys. J. 214, 759 (1977).

    Article  ADS  Google Scholar 

  5. J. A. de Jong, H. F. Henrichs, S. Schrijvers, et al., Astron. Astrophys. 345, 172 (1999).

    ADS  Google Scholar 

  6. J. A. de Jong, H. F. Henrichs, L. Kaper, et al., Astron. Astrophys. 368, 601 (2001a).

    ADS  Google Scholar 

  7. J. A. de Jong, H. F. Henrichs, L. Kaper, et al., Astron. Astrophys. 368, 601 (2001b).

    ADS  Google Scholar 

  8. I. Dobeshi, Ten Lections on Wavelets (Moscow, 2001).

  9. J.-F. Donati, G. A. Wade, J. Babel, et al., Mon. Not. R. Astron. Soc. 326, 1265 (2001).

    Article  ADS  Google Scholar 

  10. T. Eversberg, S. Lépine, and A. F. J. Moffat, Astrophys. J. 494, 799 (1998).

    Article  ADS  Google Scholar 

  11. A. W. Fullerton, D. R. Gies, and C. T. Bolton, Astrophys. J., Suppl. Ser. 103, 475 (1996).

    Article  ADS  Google Scholar 

  12. I. D. Howarth, K. W. Siebert, G. A. J. Hussain, and R. K. Prinja, Mon. Not. R. Astron. Soc. 284, 265 (1997).

    ADS  Google Scholar 

  13. S. M. Kahn, M. A. Leutenegger, J. Cottam, et al., Astron. Astrophys. 365, L312 (2001).

    Article  ADS  Google Scholar 

  14. L. Kaper, H. F. Henrichs, A. W. Fullerton, et al., Astron. Astrophys. 327, 281 (1997).

    ADS  Google Scholar 

  15. L. Kaper, H. F. Henrichs, J. S. Nichols, et al., Astron. Astrophys. 344, 231 (1999).

    ADS  Google Scholar 

  16. A. Kaufer, O. Stahl, B. Wolf, et al., Astron. Astrophys. 305, 887 (1996).

    ADS  Google Scholar 

  17. A. F. Kholtygin, Wolf-Rayet Stars: Binaries, Colliding Winds, Evolution, IAU Symp. 163, Ed. by K. A. van DerHucht and P. M. Willams (Kluwer Acad. Publ., Dordrecht, 1995), p. 160.

    Google Scholar 

  18. A. F. Kholtygin, All-Russian Astron. Conf., August 6–12, 2001(St. Petersburg, 2001), p. 186.

  19. A. F. Kholtygin, F. V. Kostenko, N. A. Kudryashova, and L. M. Oskinova, Astron. Soc. Pac. Conf. Ser. 204, 227 (2000).

    ADS  Google Scholar 

  20. A. F. Kholtygin, J. C. Brown, J. P. Cassinelli, et al., Astron. Astrophys. Trans. (2002) (in press).

  21. N. A. Kudryashova and A. F. Kholtygin, Astron. Zh. 78, 333 (2001) [Astron. Rep. 45, 287 (2001)].

    Google Scholar 

  22. S. Lépine and A. F. J. Moffat, Astrophys. J. 514, 909 (1999).

    Article  ADS  Google Scholar 

  23. S. Lépine, A. F. J. Moffat, and R. N. Henriksen, Astrophys. J. 466, 392 (1996).

    ADS  Google Scholar 

  24. S. Marchenko and A. F. J. Moffat, Astrophys. J. Lett. 499, L195 (1998).

    Article  ADS  Google Scholar 

  25. F. A. Musaev, Astron. Lett. 22, 715 (1996).

    ADS  Google Scholar 

  26. S. P. Owocki, in Proceedings of 2nd Guillermo Haro Conf., Ed. by J. Franco and A. Carraminana (Cambridge Univ. Press, Cambridge, 1998), p. 350.

    Google Scholar 

  27. D. H. Roberts, J. Lehar, and J. W. Dreher, Astron. J. 93, 968 (1987 ).

    Article  ADS  Google Scholar 

  28. C. Schrijvers, J. H. Telting, C. Aerts, et al., Astron. Astrophys., Suppl. Ser. 121, 343 (1997).

    Article  ADS  Google Scholar 

  29. V. S. Shergin, A. Yu. Kniazev, and V. A. Lipovetsky, Astron. Nachr. 317, 95 (1996).

    ADS  Google Scholar 

  30. V. V. Vityazev, Analysis of Unevently Spaced Time Series (Izd. St. Petersburg Gos. Univ., St. Petersburg, 2001).

    Google Scholar 

  31. R. F. Wilson, III/21 General Catalogue of Stellar Radial Velocity (Carnegie Institution of Washington, Washington D. C., 1953), Publ. 601.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Astronomical Institute, St. Petersburg State University, Universitetskii pr. 28, Petrodvorets, 198904, Russia

    A. F. Kholtygin

  2. Special Astrophysical Observatory, Russian Academy of Sciences, Nizhni Arkhyz, Karachai-Cherkessian Republic, 357147, Russia

    D. N. Monin, A. E. Surkov & S. N. Fabrika

Authors
  1. A. F. Kholtygin
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. D. N. Monin
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. A. E. Surkov
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. S. N. Fabrika
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

__________

Translated from Pis’ma v Astronomicheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Zhurnal, Vol. 29, No. 3, 2003, pp. 208–222.

Original Russian Text Copyright © 2003 by Kholtygin, Monin, Surkov, Fabrika.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Kholtygin, A.F., Monin, D.N., Surkov, A.E. et al. Fast line-profile variability in the spectra of O stars. Astron. Lett. 29, 175–187 (2003). https://doi.org/10.1134/1.1558157

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1134/1.1558157

Key words

Search

Navigation