астрономія, астрономия, astronomy, astronomia ; зоря, зірка, зірки, звезда, звезды ; спектроскопічні методи досліджень, спектроскопические методы исследований

We carried out high-speed low-resolution spectroscopy of two stars, 61 Cyg A and B with small telescopes. They are known as chromospherically active stars of the K5V (A) and K7V (B) spectral types. These two stars are supposed to have high-powered chromospheres. Spectroscopic monitoring of both stars showed variations of intensity in the Balmer lines and the Mg b triplets at time intervals ranging from seconds to several minutes. From the spectrum data one can find that relative variations in the H [альфа] , H[вета] lines and the Mg b triplets are about 1% and the relative power of chromospheric activity about 2 х 10 - 4.

Advances in Astronomy and Space Physics [Текст]. — Kiev, 2014. — Vol. 4, iss. 1/2. — 59 p.

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