6 papers · 1 filter
TV Corvi Revisited: Precursor and Superhump Period Derivative Linked to the Disk Instability Model
M. Uemura, R. E. Mennickent, R. Ishioka +9
We report optical photometric observations of four superoutbursts of the short-period dwarf nova TV Crv. This object experiences two types of superoutbursts; one with a precursor a…
Photometric study of southern SU UMa-type dwarf novae and candidates -- III: NSV 10934, MM Sco, AB Nor, CAL 86
T. Kato, P. Nelson, C. Stockdale +6
We photometrically observed four southern dwarf novae in outburst (NSV 10934, MM Sco, AB Nor and CAL 86). NSV 10934 was confirmed to be an SU UMa-type dwarf nova with a mean superh…
Photometric study of new southern SU UMa-type dwarf novae - II: Authentication of BF Ara as a Normal SU UMa-type Dwarf Nova with the Shortest Supercycle
T. Kato, G. Bolt, P. Nelson +5
We photometrically observed the 2002 August long outburst of BF Ara. The observation for the first time unambiguously detected superhumps (average period 0.08797(1) d), qualifying…
Photometric study of new southern SU UMa-type dwarf novae and candidates: V877 Ara, KK Tel and PU CMa
T. Kato, R. Santallo, G. Bolt +10
We photometrically observed three dwarf novae V877 Ara, KK Tel and PU CMa. We discovered undisputed presence of superhumps in V877 Ara and KK Tel, with mean periods of 0.08411(2) d…
NSV 10934: an Unusual ROSAT-Selected Dwarf Nova: An Analogous Object to HT Cam?
T. Kato, R. Stubbings, H. Yamaok +4
NSV 10934 was discovered as a large-amplitude suspected variable star of unknown classification. We noticed that the object is identified with a bright ROSAT X-ray source (1RXS J18…
Unusually Increased Activity of GZ Cnc
T. Kato, P. A. Dubovsky, R. Stubbings +1
GZ Cnc was discovered as a variable star by Takamizawa (Tmz V34), which turned out to a cataclysmic variable (CV). Past studies have shown that this object is a good candidate for…