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A Prediction of Supersoft X-Ray Phase of Classical Nova V5583 Sagittarii
Izumi Hachisu, Mariko Kato, Seiichiro Kiyota +1
We have observed the fast nova V5583 Sagittarii with five B, V, y, R_C, and I_C bands, and found that these multi-band light curves are almost identical with those of V382 Vel 1999…
Dwarf Novae in the Shortest Orbital Period Regime: I. A New Short Period Dwarf Nova, OT J055717+683226
Makoto Uemura, Akira Arai, Taichi Kato +20
We report the observation of a new dwarf nova, OT J055717+683226, during its first-ever recorded superoutburst in December 2006. Our observation shows that this object is an SU UMa…
Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae
Taichi Kato, Akira Imada, Makoto Uemura +60
We systematically surveyed period variations of superhumps in SU UMa-type dwarf novae based on newly obtained data and past publications. In many systems, the evolution of superhum…
Photometry of Three Superoutbursts of the SU UMa-type Dwarf Nova, SW Ursae Majoris
Yuichi Soejima, Daisaku Nogami, Taichi Kato +16
We investigated the superhump evolution, analysing optical photometric observations of the 2000 February-March, the 2002 October-November, and the 2006 September superoutbursts of…
Rebrightening Phenomenon in Classical Novae
Taichi Kato, Kazuhiro Nakajima, Hiroyuki Maehara +1
Two classical novae V1493 Aql and V2362 Cyg were known to exhibit unprecedented large-amplitude rebrightening during the late stage of their evolution. We analyzed common propertie…
SDSS J080434.20+510349.2: Eclipsing WZ Sge-Type Dwarf Nova with Multiple Rebrightenings
Taichi Kato, Elena P. Pavlenko, Hiroyuki Maehara +8
We observed the 2006 superoutburst of SDSS J080434.20+510349.2 during its plateau phase, rebrightening phase, and post-superoutburst final decline. We found that this object is a g…