천문학논총 (Publications of The Korean Astronomical Society)

  • 제30권2호
  • /
  • Pages.247-249
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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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PERIOD VARIATIONS OF SUPERHUMPS IN SU UMA STARS

  • 투고 : 2014.11.30
  • 심사 : 2015.06.30
  • 발행 : 2015.09.30
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초록

We review recent results on superhump period variations in SU UMa-type dwarf novae. Our statistical studies have revealed that the evolution of the superhump period is basically composed of three stages: stage-A, during which the superhump period is long and constant, stage-B, during which the superhump period increases as the superoutburst proceeds, and stage-C, during which the superhump period is short and constant. We also introduce a new method of estimating a mass ratio using the stage-A superhump period. This method can extend to, for example, low mass X-ray binaries or AM CVn stars if the stage-A superhump period is well determined.

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참고문헌

  1. Drake, A. J,. et al., 2009, First Results from the Catalina Real-Time Transient Survey, ApJ, 696, 870 https://doi.org/10.1088/0004-637X/696/1/870
  2. Imada, A., et al., 2008, The 2006 NovemberOutburst of EG Aquarii: the SU UMa Nature Revealed, PASJ, 60, 1151 https://doi.org/10.1093/pasj/60.5.1151
  3. Imada, A., et al., 2009, Superhump Development during the 2005 Superoutburst of 1RXS J053234+624755, PASJ, 61, L17 https://doi.org/10.1093/pasj/61.4.L17
  4. Kato, T., et al., 2004, Variable Star Network: World Center for Transient Object Astronomy and Variable Stars, PASJ, 56, S1 https://doi.org/10.1093/pasj/56.sp1.S1
  5. Kato, T., et al., 2009, Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae, PASJ, 61, S395 https://doi.org/10.1093/pasj/61.sp2.S395
  6. Kato, T., et al., 2009, Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. II. the Second Year, PASJ, 62, 1525
  7. Kato, T., et al., 2009, Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. III. the Third Year, PASJ, 64, 21
  8. Kato, T., et al., 2009, Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. IV. the Fourth Year, PASJ, 65, 23
  9. Kato & Osaki, 2013, New Method of Estimating Binary's Mass Ratios by Using Superhumps, PASJ, 65, 115 https://doi.org/10.1093/pasj/65.6.115
  10. Kato, T., et al., 2009, Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. V. the Fifth Year, PASJ, 66, 30
  11. Nogami, D., et al., 1997, The 1995 Superoutburst of the WZ Sagittae-Type Dwarf Nova AL Comae Berenices, ApJ, 490, 840 https://doi.org/10.1086/304881
  12. Osaki, Y., 1985, Irradiation-induced Mass-overflow Instability as a Possible Cause of Superoutbursts in SU UMa Stars, A&A, 144, 369
  13. Osaki, Y., 1996, Dwarf-Nova Outbursts, PASP, 108, 39 https://doi.org/10.1086/133689
  14. Osaki Y. & Kato, T., 2013, Study of Superoutbursts and Superhumps in SU UMa Stars by the Kepler Light Curves of V344 Lyrae and V1504 Cygni, PASJ, 65, 95 https://doi.org/10.1093/pasj/65.5.95
  15. Patterson, J., et al., 1993, Superhumps in VY Aquarii, PASP, 105, 69 https://doi.org/10.1086/133128
  16. Pojmanski, J., 2002, The All Sky Automated Survey. Catalog of Variable Stars. I. 0 h - 6 hQuarter of the Southern Hemisphere, Acta Astronomica, 52, 397
  17. Uemura, M. et al., 2002, Optical Observations of XTE J1118+480 during the 2000 Outburst, PASJ, 54, 285 https://doi.org/10.1093/pasj/54.2.285
  18. Whitehurst, R., 1988, Numerical Simulations of Accretion Disks. I - Superhumps - A Tidal Phenomenon of Accretion Disks, MNRAS, 232, 35 https://doi.org/10.1093/mnras/232.1.35