Spectroscopic Redshift Determination for a Sample of Distant Quasars Detected by the SRG Observatory Based on RTT-150 Observations. II
Irtuganov, E. N.; Bikmaev, I. F.; Gilfanov, M. R.; Khamitov, I. M.; Medvedev, P. S.; Sunyaev, R. A.; Gumerov, R. I.; Sakhibullin, N. A.; Sazonov, S. Yu.; Khorunzhev, G. A.; Burenin, R. A.; Krivonos, R. A.; Meshcheryakov, A. V.; Nikolaeva, E. A.; Sklyanov, A. S.; Glushkov, M. V.; Borisov, V. D.; Zaznobin, I. A.; Lyapin, A. R.
Russia, Turkey, Germany
Abstract
Results of the spectroscopic observations at the 1.5-m Russian-Turkish telescope for another group of 12 X-ray sources discovered by the eROSITA telescope onboard the SRG space observatory and identified by the SRGz machine learning system as candidates for distant X-ray quasars are presented. Ten objects have been confirmed as quasars at redshifts $z=2.6{-}3.2$ and two sources have turned out to be active galactic nuclei (AGNs) at $z=0.42$ and $1.02$.