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http://dx.doi.org/10.5303/PKAS.2015.30.2.247

PERIOD VARIATIONS OF SUPERHUMPS IN SU UMA STARS  

IMADA, AKIRA (Tomominami)
KATO, TAICHI (Department of Astronomy, Kyoto University)
Publication Information
Publications of The Korean Astronomical Society / v.30, no.2, 2015 , pp. 247-249 More about this Journal
Abstract
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.
Keywords
accretion disk; dwarf novae; star;
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