428 citations · 942 across the 24 of their papers we have counts for
6 papers · 1 filter
Astrometric authentication of RX J2309.8+2135 as a nearby dwarf nova candidate
T. Kato, H. Yamaoka
RX J2309.8+2135 = 1RXS J230949.6+213523 is an X-ray source discovered through the ROSAT all-sky survey. The object was later identified with a star showing a spectrum resembling a…
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…
Is KT Mon a Classical Nova?
T. Kato, H. Yamaoka
KT Mon has been considered as a classical nova in 1942 based on its light curve and spectroscopy. However, we noticed a unusual feature for a nova soon after its maximum: the early…
Two X-Ray Bright Cataclysmic Variables with Unusual Activities: GZ Cnc and NSV 10934
T. Kato, P. A. Dubovsky, R. Stubbings +6
We report on a discovery of unexpected activities in two X-ray bright dwarf novae. GZ Cnc showed an anomalous clustering of outbursts in 2002, in contrast to a low outburst frequen…
Early-Phase Spectra of "Hypernova" SN 2002ap
K. Kinugasa, H. Kawakita, K. Ayani +6
The spectral evolution of the peculiar SN Ic 2002ap during the first 40 days is presented. The spectra display very broad absorption features, which are typical of "hypernovae". Th…
The Type Ic Hypernova SN 2002ap
P. A. Mazzali, J. Deng, K. Maeda +31
Photometric and spectroscopic data of the energetic Type Ic supernova (SN) 2002ap are presented, and the properties of the SN are investigated through models of its spectral evolut…