Browsing by Author "Borisov N."

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  • Spectroscopic study of the polar BS Tri 
    Borisov N.; Gabdeev M.; Shimansky V.; Katysheva N.; Shugarov S. (2015)
    © 2015, Pleiades Publishing, Inc. We have analyzed the spectra of the cataclysmic variable BS Tri taken in September 2011 and August 2012 with the 6-m BTA SAO RAS telescope. The object’s spectra exhibit a flat continuum ...
  • The evolutionary status of UX CVn 
    Shimansky V.; Borisov N.; Sakhibullin N.; Suleimanov V.; Stupalov M. (2002)
    We have analyzed available spectroscopic and photometric observations of the close binary UX CVn using model atmospheres. Theoretical spectra and light curves were derived from models of a precataclysmic variable and a ...
  • The Impact of Reflection Effects on the Parameters of the Old Pre-Cataclysmic Variables MS Peg and LM Com 
    Shimansky V.; Borisov N.; Shimanskaya N. (2003)
    We have determined the main parameters of the old precataclysmic variable stars MS Peg and LM Com. The radial velocities of the components, reflection effects in the spectra, and light curves of the systems are studied ...
  • The intermediate-age pre-cataclysmic variables SDSS J172406+562003 and RE J2013+4002 
    Shimansky V.; Borisov N.; Nurtdinova D.; Mitrofanova A.; Vlasyuk V.; Spiridonova O. (2012)
    We have analyzed the physical status of the pre-cataclysmic variables SDSSJ172406+562003 and RE J2013+4002, which have evolved after their common-envelope stage a time t = 10 6-10 7 years. Spectroscopy and photometry of ...
  • The nature of the unique precataclysmic variable V664 Cas with two-peaked balmer lines in its spectrum 
    Shimanskiǐ V.; Borisov N.; Sakhibullin N.; Surkov A. (2004)
    We analyze photometric and spectroscopic observations of the close binary system V664 Gas. All the characteristics of its radiation are consistent with the star being a cataclysmic variable with powerful reflection effects. ...
  • The new pre-cataclysmic binary PG 2200+085 
    Shimansky V.; Sakhibullin N.; Bikmaev I.; Ritter H.; Suleimanov V.; Borisov N.; Galeev A. (2006)
    Aims. We present the results of spectroscopic- and orbit-sampled photometric observations of the faint UV-excess object PG 2200+085. Methods. The optical CCD photometry observations of this object were performed by the ...
  • The spectrum of EG UMa 
    Shimanskiǐ V.; Borisov N. (2002)
    Spectra and radial-velocity curves for the precataclysmic variable EG UMa are analyzed. The system ephemeris has been improved and all system parameters determined. The parameters of the secondary are consistent with current ...
  • Time-resolved spectroscopy and doppler tomography of UX UMa 
    Suleimanov V.; Neustroev V.; Borisov N.; Fioktistova I. (2004)
    Medium resolution spectroscopy of nova-like cataclysmic variable UX UMA was performed using the 6-m telescope SAO RAS in April 1999. Obtained spectra cover the total orbital period including eclipse phases and allow us to ...
  • V1327 aquilae: A new RR lyrae variable with an extremely high radial velocity 
    Galeev A.; Bikmaev I.; Borisov N.; Zhuchkov R.; Shimanskii V.; Khabibullina M.; Sakhibullin N. (2008)
    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 optical Russian-Turkish telescope (RTT-150, ...

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