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Optical light curves of RS Oph (2006) and hydrogen burning turnoff
Izumi Hachisu, Mariko Kato, Seiichiro Kiyota +11
We report a coordinated multi-band photometry of the RS Oph 2006 outburst and highlight the emission line free y-band photometry that shows a mid-plateau phase at y ~ 10.2 mag from…
Late Superhumps in WZ Sge-Type Dwarf Novae
Taichi Kato, Hiroyuki Maehara, Berto Monard
We report on the detection of very stable modulations with periods unexpectedly (~0.5%) longer than superhump periods during the slowly fading stage of WZ Sge-type superoutbursts i…
The 2006 November outburst of EG Aquarii: the SU UMa nature revealed
Akira Imada, Rod Stubbings, Taichi Kato +32
We report time-resolved CCD photometry of the cataclysmic variable EG Aquarii during the 2006 November outburst During the outburst, superhumps were unambiguously detected with a m…
Discovery of The New WZ Sge Star, SDSS J080434.20+510349.2
E. Pavlenko, S. Yu. Shugarov, N. A. Katysheva +13
We present the results of photometric observations of SDSS J080434.20+510349.2 in its low state and during an outburst and spectroscopy during the outburst. We found such peculiari…
Discovery of a WZ Sge-Type Dwarf Nova, SDSS J102146.44+234926.3: Unprecedented Infrared Activity during a Rebrightening Phase
M. Uemura, A. Arai, T. Krajci +26
Several SU UMa-type dwarf novae, in particular, WZ Sge-type stars tend to exhibit rebrightenings after superoutbursts. The rebrightening phenomenon is problematic for the disk inst…
Long-term monitoring of the short period SU UMa-type dwarf nova, V844 Herculis
Shota Oizumi, Toshihiro Omodaka, Hiroyuki Yamamoto +19
We report on time-resolved CCD photometry of four outbursts of a short-period SU UMa-type dwarf nova, V844 Herculis. We successfully determined the mean superhump periods to be 0.0…