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Information × Registration Number 0212U005939, 0109U008869 , R & D reports Title The late stages of evolution of interacting binary stars popup.stage_title Head Pavlenko Elena Petrovna, Registration Date 15-01-2013 Organization Scientific-research institute "Crimean astrophysical observatory" popup.description2 The photometric and spectral observations of Nova V2468 Cyg over 1.5 yr since the start of the outburst on the phases of smooth decine and rebrightenings is analysed. V2468 Cyg was classified as the very fast nova. The absolute brightness of nova in maximum was estimated that is equal to M = -8.9; the distance to nova was defined (5.3 kpc). The white dwarf mass was obtained (1.1 solar masses). Basing on the observations of the asynchronous polar BY Cam in 2004-2012 that have been carried out in the SRI CrAO, Terskol (Russia) and Apache Point Observatory (USA), it was found, that the white dwarf of the system is spinning-down with rate of 0.50(0.07) s/year and the time of the spin-orbital synchronization is 250(20) years. On the base the dwarf nova EZ Lynx optical observations obtained the at 2.6-m ZTSh telescope SRF "CrAO" it was found that the white dwarf of this system twice entered the instability strip: the first time 8 months after the 2006 outburst with period of non-radial pulsations of 12.6 min and the second time 7 months after the 2010 outburst with period 4.3 min. This result is confirmed by the ultraviolet observations at the space telescope Hubble. Product Description popup.authors Антонюк Оксана Ігорівна Бабіна Юлія Валерівна Бакланов Олексій Володимирович Самсонов Денис Олександрович Тарасов Анітолії Євгенович Тарасова Таісія Миколаївна popup.nrat_date 2020-04-02 Close