Spectroscopic Variability of the Supergiant Star HD 225094

• Autorzy: Maharramov Y. M.
• Języki publikacji: EN

Abstrakty

EN

Profile variations in the H_α and H_β lines in the spectra of the star HD 225094 are investigated using observations carried out in 2013-2014 with the 2-m telescope at the Shamakhy Astrophysical Observatory. The spectral resolution of the collected spectra is approximately 15 000. The absorption and emission components of the H_α line are found to disappear on some observational epochs. It is suggested that the observational evidence for the non-stationary atmosphere of HD 225094 can be associated in part with non-spherical stellar wind.

Słowa kluczowe

EN

supergiants; stars: individual: HD 225094

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2015
• Tom: Vol. 65, No. 2
• Strony: 205--214
• Opis fizyczny: Bibliogr. 17 poz., tab., wykr.

Twórcy

autor

Maharramov Y. M.

• Shamakhy Astrophysical Observatory, Azerbaijan National Academy of Sciences, Yu. Mammadaliyev settlement, Shamakhy district, Republic of Azerbaijan

Bibliografia

• Galazutdinov, G.A. 1992, Preprint SAO RAN, Spets. Astrofiz. Observ., Nizhnii Arkhyz, KChR, 92.
• Genova R., and Beckman, J.E. 2003, ApJS, 145, 355.
• Guinan, E.F., McCook, G.P., and Weisenberger, A.G. 1982, IBVS, 2227.
• Howarth, I.D., Siebert, K.W., Hussain, G.A.J., and Prinja, R.K. 1997, MNRAS, 284, 265.
• Kendall, T.R., Conlon, E.S., Dufton, P.L., and Keenan, F.P. 1994, A&A, 290, 563.
• Leitherer, C., and Wolf, B. 1984, A&A, 132, 151.
• Lennon, D.J., Dufton, P.L., and Fitzsimmons, A. 1993, A&AS, 97, 559.
• Maharramov, Y.M. 2013a, Astronomy Reports, 57, 303.
• Maharramov, Y.M. 2013b, Kinematics and Physics of Celestial Bodies, 29, 2.78
• McErlean, N.D., Lennon, D.J., and Dufton, P.L. 1999, A&A, 349, 553.
• Mikailov, Kh.M., Khalilov, V.M., and Alekberov, I.A. 2005, Tsirk. Shamakhy Astrophys. Observ., 109, 21.
• Pasok, A., and Kolka, I. 1992, IBVS, 3804.
• Prinja, R.K., and Massa, D.L. 2010, A&A, 521, 55.
• Rimoldini, L., et al. 2012, MNRAS, 427, 2917.
• Rosendhal, J.D. 1973, ApJ, 186, 909.
• Sobolev, V.V. 1947, in: “Moving Envelopes of Stars”, Leningrad.
• Sobolev, V.V. 1985, in: “Course in Theoretical Astrophysics”, Moscow, Izdatel’stvo Nauka.