An unusual variable star: CH Cyg

Conclusions The existing observational data on CH Cyg agrees well with a model consisting of a semiregular M6 III giant and a white dwarf with a transient accretion disk formed at the time of the large maxima. The model can be tested by means of x-ray and speckle-interferometric observations.Institute of Astrophysics and Physics of the Atmosphere, Estonian Academy of Sciences. Translated from Astrofizika, Vol. 16, No. 3, pp. 443–455. July–September, 1980.