천문학논총 (Publications of The Korean Astronomical Society)

  • 제30권2호
  • /
  • Pages.241-245
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  • 2015
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  • 1225-1534(pISSN)
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  • 2287-6936(eISSN)
한국천문학회 (The Korean Astronomical Society)
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STUDY OF SUPERHUMPS IN THE RECENTLY DISCOVERED SU UMA DWARF NOVAE

  • VOLOSHINA, I. (Sternberg Astronomical Institute, Moscow State University) ;
  • KHRUZINA, T. (Sternberg Astronomical Institute, Moscow State University) ;
  • METLOV, V. (Sternberg Astronomical Institute, Moscow State University)
  • 투고 : 2014.11.30
  • 심사 : 2015.06.30
  • 발행 : 2015.09.30
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초록

In this work we present the results of light curve analysis for two cataclysmic variables detected recently in the SDSS project: SDSS J090350.73+330036.1 and J150240.98+333423.9. Photometric observations of the first were obtained during a superoutburst in May 2010. Our observations clearly indicate the presence of superhumps in the light curves, suggesting SDSS J090350.73+330036.1 is an SU UMa dwarf nova. We determined the period of the superhumps. We also carried out fitting using a spiral-arm model in order to determine parameters of the accretion disk, hot line, and other components of this system. Photometric observations of the second, J150240.98+333423.9, were obtained during the post-maximum decline, during April-June 2012. Photometric variability of this system has been studied in an inactive state. We obtained its parameters via a combined model fitted to the observed light curves by ${\chi}^2$ minimization.

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참고문헌

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