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Просмотр по автору "Borisov N."

Просмотр по автору "Borisov N."

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  • Analysis of cataclysmic variable GSC02197-00886 evolution 
    Mitrofanova A.; Borisov N.; Shimansky V. (2014)
    We present the spectral analysis of the physical state and evolution of the WZSge-type cataclysmic variable GSC02197-00886. The spectra of the system, covering the total orbital period at the time of the outburst on May ...
  • Analysis of fundamental parameters for V477 Lyr 
    Shimansky V.; Pozdnyakova S.; Borisov N.; Bikmaev I.; Galeev A.; Sakhibullin N.; Spiridonova O. (2008)
    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 curves. We show ...
  • Analysis of reflection effects in HS 2333+3927 
    Shimanskii V.; Yakin D.; Borisov N.; Bikmaev I. (2012)
    The results of photometric and spectroscopic observations of the pre-cataclysmic variable HS 2333+3927, which is a HW Vir binary system, are analyzed. The parameters of the sdB subdwarf companion (T eff = 37 500 ± 500 K, ...
  • Analysis of the Optical Cyclotron Emission of Polar CRTS CSS081231 J071126+440405 
    Kolbin A.; Serebryakova N.; Gabdeev M.; Borisov N. (2019)
    © 2019, Pleiades Publishing, Ltd. We have modeled the cyclotron spectra and photopolarimetric data of polar CRTS CSS081231 J071126+440405. A series of spectra of the polar were obtained in the intermediate brightness state ...
  • Analysis of the optical emission of the young precataclysmic variables HS 1857+5144 and ABELL 65 
    Shimansky V.; Pozdnyakova S.; Borisov N.; Bikmaev I.; Vlasyuk V.; Spiridonova O.; Galeev A.; Mel'nikov S. (2009)
    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 Special Astrophysical ...
  • Dark spot, spiral waves and the SW Sextantis behaviour: It is all about UX Ursae Majoris 
    Neustroev V.; Suleimanov V.; Borisov N.; Belyakov K.; Shearer A. (2011)
    We present an analysis of time-resolved, medium-resolution optical spectroscopic observations of UX Ursae Majoris (UX UMa) in the blue (3920-5250 Å) and red (6100-7200 Å) wavelength ranges that were obtained in 1999 April ...
  • Fundamental parameters of BE UMa revised 
    Shimanskii V.; Borisov N.; Pozdnyakova S.; Bikmaev I.; Vlasyuk V.; Sakhibullin N.; Spiridonova O. (2008)
    We have determined a complete set of parameters for the young pre-cataclysmic variable BE UMa from a comprehensive photometric and spectroscopic analysis using model atmospheres. Our precise photometry and spectroscopy ...
  • Investigation of the new cataclysmic variable 1RXS J180834.7+101041 
    Yakin D.; Suleimanov V.; Borisov N.; Shimanskii V.; Bikmaev I. (2011)
    We present the results of our photometric and spectroscopic studies of the new eclipsing cataclysmic variable star 1RXS J180834. 7+101041. Its spectrum exhibits double-peaked hydrogen and helium emission lines. The Doppler ...
  • Is WD 1437-008 a cataclysmic variable? 
    Shimansky V.; Nurtdinova D.; Borisov N.; Spiridonova O. (2011)
    Comprehensive observations of a close binary candidate WD 1437-008 are performed. The shape and amplitude of the observed brightness variations are shown to be inconsistent with the hypothesis of reflection effects, and ...
  • Modeling the optical radiation of the precataclysmic variable SDSS J212531-010745 
    Shimansky V.; Borisov N.; Nurtdinova D.; Solovyeva Y.; Sakhibullin N.; Spiridonova O. (2015)
    © 2015, Pleiades Publishing, Ltd. Optical observations are analyzed to derive a set of basic parameters for the precataclysmic variable star SDSS J212531-010745, whose primary is a PG1159-type star. Spectroscopic and ...
  • MT Ser, a binary blue subdwarf 
    Shimanskii V.; Borisov N.; Sakhibullin N.; Sheveleva D. (2008)
    We have classified and determined the parameters of the evolved close binary MT Ser. Our moderate-resolution spectra covering various phases of the orbital period were taken with the 6-m telescope of the Special Astrophysical ...
  • Observations of eclipses of UU Sge 
    Shimansky V.; Borisov N.; Bikmaev I.; Shimanskaya N. (2012)
    We have performed spectroscopy and photometry of eclipses of the pre-cataclysmic variable UUSge using the 6-m telescope of the Special AstrophysicalObservatory and the 1. 5-mRussian-Turkish telescope. Our analysis of ...
  • On the formation of TW Crv optical radiation 
    Shimansky V.; Mitrofanova A.; Borisov N.; Fabrika S.; Galeev A. (2016)
    © 2016, Pleiades Publishing, Ltd.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 ...
  • PG 1316+678: A young pre-cataclysmic binary with weak reflection effects 
    Shimansky V.; Borisov N.; Bikmaev I.; Sakhibullin N.; Shimanskaya N.; Spiridonova O.; Irtuganov E. (2013)
    The PG 1316+678 star is classified as a pre-cataclysmic binary, as is evidenced by its photometric and spectroscopic observations. Its orbital period is determined to be Porb = 3. 3803d, which coincides with the photometric ...
  • Photometric and spectral studies of the eclipsing polar CRTS CSS081231 J071126+440405 
    Borisov N.; Gabdeev M.; Shimansky V.; Katysheva N.; Kolbin A.; Shugarov S.; Goranskij V. (2016)
    © 2016, Pleiades Publishing, Ltd.We present the results of the study of the eclipsing polar CRTS CSS081231 J071126+440405. Photometric observations allowed us to refine the orbital period of the system (Formula presented.). ...
  • PN G068.1+11.0: A young pre-cataclysmic variable with an extremely hot primary 
    Mitrofanova A.; Shimansky V.; Borisov N.; Spiridonova O.; Gabdeev M. (2016)
    © 2016, Pleiades Publishing, Ltd.An analysis of spectroscopic and photometric data for the young pre-cataclysmic variable (PCV) PN G068.1+11.0, which passed through its common-envelope stage relatively recently, is presented. ...
  • Spectral and photometric studies of polar CRTS CSS 130604 J 215427+155714 
    Borisov N.; Gabdeev M.; Shimansky V.; Katysheva N.; Shugarov S. (2017)
    © 2017, Pleiades Publishing, Ltd.We present the results of spectroscopic and photometric studies of a new polar CRTS CSS130604 J 215427+155714, conducted at the telescopes of the SAO RAS. Analysis of the photometric series ...
  • Spectral and photometric studies of the polar USNO-A2.0 0825-18396733 
    Gabdeev M.; Borisov N.; Shimansky V.; Spiridonova O. (2015)
    © 2015, Pleiades Publishing, Ltd. Results of photometric and spectral studies of the new magnetic cataclysmic variable (polar) USNO-A2.0 0825-18396733 are presented. Photometric data in the B, V, and Rc filters show that ...
  • Spectral types of four binaries based on photometric observations 
    Shimanskii V.; Bikmaev I.; Borisov N.; Vlasyuk V.; Galeev A.; Sakhibullin N.; Spiridonova O. (2008)
    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 binary, with ...
  • Spectroscopic and Photometric Study of the Polar 1RXS J152506.9-032647 
    Gabdeev M.; Shimansky V.; Borisov N.; Bikmaev I.; Moskvitin A.; Kolbin A. (2019)
    © 2019, Pleiades Publishing, Ltd. We present the photometric and spectroscopic observations of the polar 1RXSJ152506.9-032647. The observations were carried out at the 6-m and Zeiss-1000 telescopes of the SAO RAS, and at ...

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