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Ultraviolet Spectrum Variability of BP Tau
Ismailov, N. Z.; Alimardanova, F. N.; Baheddinova, G. R. +1 more
Results of the ultraviolet IUE archive spectrum researches of classic T Tauri type star BP Tau had been presented. Spectroscopic parameters of mainly strong emission lines were measured. On the more full massive which had been created on the intensity values of the emission doublet MgII λ 2800Å a variability with period P = 8.275 ± 0.005 days with…
Spectral Observations of AB Aur
Ismailov, N. Z.; Khalilov, O. V.
Results of spectral observations of the Herbig Ae/Be type star AB Aur carried out for 2008 - 2009 in SHAO were presented. The absorption component of the Hα line has a negative variable dis placement on different dates, reaching -300 km/s. To this absorption component superimposed an emission peak, which is rather unstable and can disappear com pl…
Spectral and Photometric Researches of RY Tau
Ismailov, N. Z.; Adigozalzade, H. N.
The results of analysis of the total light curve of the classic T Tauri type star RY Tau were presented. For a time at last 48 years a brightness of the star is characterized by fluctuations with amplitude about ΔV ∼1m, with characteristic time about 300 days. Firstly we were showed, that in an interval of 1983 - 2004 in V-band light va…