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Spectroscopic Variability of the Supergiant Star HD 225094

Maharramov Y. M.

Acta Astronomica

2015

Vol. 65, No. 2

205--214

Profile variations in the Hα and Hβ 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 Hα 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.