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  1. No Access

    Article

    Spectroscopic Redshift Determination for a Sample of Distant Quasars Detected by the SRG Observatory Based on RTT-150 Observations. II

    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 th...

    I. F. Bikmaev, E. N. Irtuganov, E. A. Nikolaeva, N. A. Sakhibullin… in Astronomy Letters (2021)

  2. No Access

    Article

    Spectroscopic Redshift Determination for a Sample of Distant Quasars Detected by the SRG Observatory Based on RTT-150 Observations. I

    Results of the first spectroscopic observations at the 1.5-m Russian–Turkish telescope for the X-ray sources discovered by the eROSITA telescope onboard the SRG space observatory and identified by the SRGz mac...

    I. F. Bikmaev, E. N. Irtuganov, E. A. Nikolaeva, N. A. Sakhibullin… in Astronomy Letters (2020)

  3. No Access

    Article

    Variations in the Period of Negative Superhumps in SU UMa-Type Dwarf Novae. I. Mn Dra (2012-2017)

    This is a photometric study of the dwarf nova MN Dra made during 2012-2017 on nine telescopes over 152 nights. Overall, the observations covered 4 superoutbursts, 7 normal outbursts and the quiescent state. Th...

    A. S. Sklyanov, E. P. Pavlenko, K. A. Antonyuk, N. V. Pit… in Astrophysics (2020)

  4. No Access

    Article

    NY Ser: Outburst Activity and Multiperiodic Processes in its Various Stages During 2014 and 2016

    Results from observation campaigns for the dwarf nova NY Ser during 2014 and 2016 are presented. Data were obtained on a total of 126 nights in 2014 that include 20 normal outbursts and one superoutburst and o...

    A. S. Sklyanov, E. P. Pavlenko, O. I. Antonyuk, A. A. Sosnovskij… in Astrophysics (2018)

  5. No Access

    Article

    Superhump evolution of WZ Sge-type dwarf nova ASASSN-14cv at rebrightening stage

    We report the results of observations of a WZ Sge-type dwarf nova ASASSN-14cv, acquired in 2014 and covering the end of a superoutburst and a rebrightening stage. We detected 8 rebrightenings of this star. Bas...

    A. S. Sklyanov, E. P. Pavlenko, O. I. Antonyuk, K. A. Antonyuk… in Astrophysical Bulletin (2016)