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  1. No Access

    Article

    Distribution and Some Traits of Biology of Sculpins of Genus Triglops (Cottidae) in the Sea of Japan

    It was revealed that the southern border of the range of spectacled sculpin Triglops scepticus runs in the region of 37°23′ N. It has been confirmed that the southern border of the range of Jordan’s sculpin T. jo...

    O. I. Pushchina, V. V. Panchenko, M. I. Boyko, A. I. Galeev in Journal of Ichthyology (2021)

  2. 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)

  3. No Access

    Article

    Spectroscopic study of the optical counterpart to the fast X-ray transient IGR J17544-2619 based on observations at the 1.5-m RTT-150 telescope

    We present the results of our long-term photometric and spectroscopic observations at the Russian–Turkish RTT-150 telescope for the optical counterpart to one of the best-known sources, representatives of the ...

    I. F. Bikmaev, E. A. Nikolaeva, V. V. Shimansky, A. I. Galeev… in Astronomy Letters (2017)

  4. No Access

    Article

    On the formation of TW Crv optical radiation

    We present the analysis of the optical radiation of the young pre-cataclysmic variable TW Crv. Spectroscopic and photometric observations were obtained at the SAO RAS 6-m BTA telescope and at the Russian-Turki...

    V. V. Shimansky, A. A. Mitrofanova, N. V. Borisov, S. N. Fabrika… in Astrophysical Bulletin (2016)

  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)

  6. No Access

    Article

    Spectral Characteristics of Radiation from the Nucleus of the Seyfert Galaxy NGC 1275 After an Epoch of its Maximum Activity

    The spectral characteristics of radiation from the nucleus of the Seyfert galaxy NGC 1275 are studied on a long time scale. Changes in the profiles of some emission lines and changes in t...

    I. F. Bikmaev, L. M. Sharipova, A. I. Galeev, A. É. Akhmetkhanova in Astrophysics (2016)

  7. No Access

    Article

    Using brown alga Desmarestia viridis (Desmarestiaceae) by juvenile fish Opisthocentrus spp. (Stichaeidae) as shelter

    A. I. Galeev, A. A. Balanov, A. I. Markevich, D. A. Nekrasov in Journal of Ichthyology (2015)

  8. No Access

    Article

    Investigation of the parameters of the massive binary X-ray system IGR J17544-2619

    The paper presents the results of spectroscopic research of the high-mass X-ray binary IGRJ17544-2619 optical component that were carried out with the RTT-150. The analysis of a long series of spectroscopic obser...

    E. A. Nikolaeva, I. F. Bikmaev… in Bulletin of the Crimean Astrophysical Obse… (2013)

  9. No Access

    Article

    Chemical composition of δ Scuti stars: 1. AO CVn, CP Boo, KW Aur

    We used high-resolution echelle spectra acquired with the 1.5-m Russian-Turkish Telescope to determine the fundamental atmospheric parameters and abundances of 30 chemical elements for three δ Scuti stars: AOCVn,...

    A. I. Galeev, D. V. Ivanova, V. V. Shimansky, I. F. Bikmaev in Astronomy Reports (2012)

  10. No Access

    Article

    Analysis of the optical emission of the young precataclysmic variables HS 1857+5144 and ABELL 65

    We analyze the physical state and the properties of the close binary systems HS 1857+5144 and Abell 65. We took the spectra of both systems over a wide range of orbital phases with the 6-m telescope of the Spe...

    V. V. Shimansky, S. A. Pozdnyakova, N. V. Borisov, I. F. Bikmaev… in Astrophysical Bulletin (2009)

  11. No Access

    Article

    Spectral types of four binaries based on photometric observations

    We present results of photometric and spectroscopic observations of four close binaries with subdwarf B components: PG 0918+029, PG 1000+408, PG 1116+301, PG 0001+275. We discovered that PG 1000+408 is a close bi...

    V. V. Shimanskii, I. F. Bikmaev, N. V. Borisov, V. V. Vlasyuk… in Astronomy Reports (2008)

  12. No Access

    Article

    V1327 Aquilae: A New RR Lyrae variable with an extremely high radial velocity

    We have carried out photometry and spectroscopy of the star V1327 Aql (R = 16 m ) as part of our program of observations of poorly studied cataclysmic variables using the 1.5-m o...

    A. I. Galeev, I. F. Bikmaev, N. V. Borisov, R. Ya. Zhuchkov… in Astronomy Reports (2008)

  13. No Access

    Article

    Analysis of fundamental parameters for V477 Lyr

    We analyze the photometric and spectroscopic observations of the young pre-cataclysmic variable (pre-CV) V477 Lyr. The masses of both binary components have been corrected by analyzing their radial velocity cu...

    V. V. Shimansky, S. A. Pozdnyakova, N. V. Borisov, I. F. Bikmaev… in Astronomy Letters (2008)

  14. No Access

    Article

    Kinematics and age of 15 stars-photometric solar analogs

    The radial and space velocities are inferred for 15 stars that are photometric analogs of the Sun. The space velocity components (U, V, W) of most of these stars lie within the 10–60 km/s interval. The star HD...

    A. I. Galeev, V. V. Shimansky in Astrophysical Bulletin (2008)

  15. No Access

    Article

    Chemical composition of 15 photometric analogues of the Sun

    The results of a spectroscopic analysis of 15 stars that are photometric analogues of the Sun are reported. The effective temperatures and surface gravities in the stellar atmospheres are derived from publishe...

    A. I. Galeev, I. F. Bikmaev, F. A. Musaev, G. A. Galazutdinov in Astronomy Reports (2004)

  16. No Access

    Article

    The atmospheric lithium abundances of solar analogues

    We have analyzed the lithium abundance in the atmospheres of 20 stars that are solar analogues based on high-resolution echelle spectra using model atmospheres in a non-LTE approach. In terms of their lithium ...

    A. I. Galeev, I. F. Bikmaev, L. I. Mashonkina, F. A. Musaev… in Astronomy Reports (2004)

  17. No Access

    Article

    Observational constraints on potassium synthesis during the formation of stars of the Galactic disk

    The non-LTE potassium abundances in the atmospheres of 33 Galactic-disk stars are derived and the parameters of the atmospheres of 23 of the stars are determined. Neglecting departures from LTE results in a sy...

    V. V. Shimansky, I. F. Bikmaev, A. I. Galeev, N. N. Shimanskaya… in Astronomy Reports (2003)