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Line profile variability in spectra of hot massive stars

Published online by Cambridge University Press:  23 January 2015

Alexander Kholtygin ,
Natallia Sudnik  and
Viacheslav Dushin
Alexander Kholtygin
Affiliation:
St.Petersburg State University email: [email protected]
Natallia Sudnik
Affiliation:
St.Petersburg State University email: [email protected]
Viacheslav Dushin
Affiliation:
St.Petersburg State University email: [email protected]
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Abstract

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We report the results of our study of the fast line profile variability (LPV) (hours – few days) in the spectra of bright OB and WR stars. All spectra were obtained with 6-m and 1-m telescope of Russian Special Astrophysical Observatory (SAO) and 1.8-m telescope of Bohyunsan Optical Astronomy Observatory, Korea (BOAO). We detected both the stochastic LPV, connected with the formation of small-scale structures in the stellar wind and the regular LPV induced by the large-scale structures in the wind.

Keywords

stars: early-typeline: profiles
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Issue S307: New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry , June 2014 , pp. 113 - 114
Copyright
Copyright © International Astronomical Union 2015 

References

Dushin, V. V., Kholtygin, A. F., Chuntonov, G. A., & Kudryavtsev, D. O. 2013, Astrophysical Bulletin 68, 184CrossRefGoogle Scholar
Kholtygin, A. F., Burlakova, T. E., Fabrika, S. N., Valyavin, G. G., & Yushkin, M. V. 2006, Astronomy Reports 50, 887CrossRefGoogle Scholar
Kholtygin, A. F., Fabrika, S. N., Rusomarov, N., et al. 2011, Astronomische Nachrichten 332, 1008CrossRefGoogle Scholar
Kholtygin, A. F., Monin, D. N., Surkov, A. E., & Fabrika, S. N. 2003, Astronomy Letters 29, 175CrossRefGoogle Scholar