Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12323/5764
Title: Long-Term Photometric and Spectral Variations of DI Cephei
Authors: Ismailov, N. Z.
Grankin, Konstantin Nikolaevich
Efendieva, F.
Issue Date: Apr-2008
Citation: Peremennye Zvezdy (Variable Stars)
Series/Report no.: Vol. 28;№ 5
Abstract: We have analyzed the photometric and spectral variations of the classical T Tauri star DI Cep for the last 50 years. Currently the star is at its faintest state and possesses an emission spectrum in the visual range. Synchronous spectroscopy and UBV R photometry show that the higher the brightness, the stronger were the intensities of hydrogen Hα, Hβ emission lines and of FeII, HeI λ5876 ˚A emissions. For the first time, we detected, with a high probability, quasi-periodic variations of the star’s brightness and of its spectrum with the period P = 2020 ± 200 days.
URI: http://hdl.handle.net/20.500.12323/5764
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