The mass of the compact object in the low-mass X-ray binary 2S 0921-630

@article{Abubekerov2006TheMO,
  title={The mass of the compact object in the low-mass X-ray binary 2S 0921-630},
  author={M. K. Abubekerov and Eleonora A. Antokhina and Anatolii Mikhailovich Cherepashchuk and V. V. Shimanskii},
  journal={Astronomy Reports},
  year={2006},
  volume={50},
  pages={544-552}
}
We interpret the observed radial-velocity curve of the optical star in the low-mass X-ray binary 2S 0921-630 using a Roche model, taking into account the X-ray heating of the optical star and screening of X-rays coming from the relativistic object by the accretion disk. Consequences of possible anisotropy of the X-ray radiation are considered. We obtain relations between the masses of the optical and compact (X-ray) components, mv and mx, for orbital inclinations i = 60°, 75°, and 90… 
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