Karitskaya E.; Bochkarev N.; Bondar A.; Galazutdinov G.; Lee B.; Musaev F.; Sapar A.; Shimanskii V.
(2008)
We discuss the results of optical spectroscopic monitoring of Cyg X-1 = HDE 226868/V1357 Cyg in 2002-2004. Our spectroscopy was carried out at the Terskol Observatory (Kabarda-Balkaria, Russia; the resolving power was R = ...