Abstract
The evolution of parameters of close binary systems containing a red dwarf (with mass loss) and a condensed star is investigated. The mass loss from the system and asynchronism of the red dwarf rotation are taken into consideration. The calculations show that if the initial mass ratioq 0≲2 then during ∼107 yr the instability of mass loss process arises, and a bright X-ray source forms with luminosity close to the Eddington one. Ifq 0>2 then during the mass loss phase the bright X-ray source arises twice. The models explain the existence of the ‘forbidden’ interval of orbital periods and the absence of systems with periods less than ∼80 min.
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Amnuel, P.R., Guseinov, O.H. On the evolution of low mas binary systems. Astrophys Space Sci 86, 91–106 (1982). https://doi.org/10.1007/BF00651832
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DOI: https://doi.org/10.1007/BF00651832