135 citations · 536 across the 55 of their papers we have counts for
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Orbital parameters of the high-mass X-ray binary 4U 2206+54
K. A. Stoyanov, R. K. Zamanov, G. Y. Latev +2
We present new radial velocities of the high-mass X-ray binary star 4U 2206+54 based on optical spectra obtained with the Coude spectrograph at the 2m RCC telescope at the Rozhen N…
Rotation of the Mass Donors in High-mass X-ray Binaries and Symbiotic Stars
Kiril Stoyanov, Radoslav Zamanov
Our aim is to investigate the tidal interaction in High-mass X-ray Binaries and Symbiotic stars in order to determine in which objects the rotation of the mass donors is synchroniz…
Emission line variability in the spectrum of V417 Centauri
K. A. Stoyanov, R. K. Zamanov, M. F. Bode +4
We report high resolution spectral observations of the yellow symbiotic star V417 Cen obtained in 2004. We find that the equivalent widths of the emission lines decreased, while th…
Photometric reverberation mapping of Markarian 279
R. Bachev, A. Strigachev, E. Semkov +9
By using standard broad-band VRI photometry we were able to discriminate the variations of the broad hydrogen alpha line from the continuum variations for the active galaxy Mkn 279…