Abstract
On the basis of the spectrograms obtained in the period 1976–1984 the Hα profiles present time variation. There are also variations in the profiles of Hβ, Hγ, Hδ, and of other elements. The profile of the Hα line has been analysed, as well as its relations with possible expansion, contraction, quiet and mixed conditions of the atmosphere of HD 21291 and HD 21389. In our opinion it is possible that there are two cycles of periods in the variation of Hα line profile. These two periods in the variation of the physical conditions of the atmosphere for the studied stars, give us the key for understanding the movement of matter in the different layers and the complex mechanism of pulsation in the stellar atmosphere.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Denizman, L.: 1988, Ph.D. Thesis, S.I.S.S.A./I.S.A.S., Trieste.
Denizman, L. and Hack, M.: 1988,Astron. Astrophys. Suppl. Series 78, 79.
Rzaev, A. Kh., Zeinalov, S. K., and Chentsov, E. L.: 1989,Kinematics and Physics of Solid Bodies, Vol. 5, No. 1, p. 81.
Sokolov, V. V. and Chentsov, E. L.: 1984,Izv. Spets. Astrophys. Obs. 18, 29.
Zeinalov, S. K.: 1984,Tsirq. ShAO 73.
Zeinalov, S. K. and Rustamov, D. N.: 1987, Reprint No. 248, Baku.
Zeinalov, S. K. and Rzaev, A. Kh.: 1988,Trud. KGU 51, 74.
Zvereva, E. B., Zeinalov, S. K., and Chentsov, E. L.: 1984,Izv. Spets. Astrophys. Obs. 18, 29.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Zeinalov, S.K., Rzaev, A.K. Non-stationary atmospheres of supergiants. Astrophys Space Sci 172, 217–224 (1990). https://doi.org/10.1007/BF00643312
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00643312