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astro-ph.SR2014★ 16 cited
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…
astro-ph.SR2014
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…