3 papers
astro-ph.SR2025
The massive binary system WR 20a: light curve analysis in a colliding wind model
I. I. Antokhin, E. A. Antokhina, A. M. Cherepashchuk
The article presents the results of the analysis of optical light curves of the massive binary system WR 20a (WN 6ha + WN 6ha). The analysis was performed with the binary system mo…
astro-ph.HE2025
Empirical correlation between masses of black holes and Wolf-Rayet stars derived from their mass distributions in spectroscopic binaries
Konstantin Postnov, Ivan Shaposhnikov, Anatol Cherepashchuk
We present observationally determined mass distributions of Wolf-Rayet (WR) stars in WR+OB binaries and black holes (BH) in spectroscopic binaries. Both WR and BH mass probability…
astro-ph.SR2025
Transient narrow high-velocity absorptions in the stationary spectra of SS433
A. V. Dodin, K. A. Postnov, A. M. Cherepashchuk +1
We report on the discovery of rare emergence (31 nights from 360 nights of observations) of narrow absorption features in hydrogen and helium lines in stationary SS433 spectra with…