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The possible orbital period of the nova V1493 Aquilae
Andrej Dobrotka, Michael Friedjung, Alon Retter +2
Period analysis of CCD photometry of V1493 Aql (Nova Aql 1999 no. 1) performed during 12 nights through I and R filters a few weeks after maximum is presented. The PDM method for p…
A New SU UMa-Type Dwarf Nova, QW Serpentis (= TmzV46)
D. Nogami, M. Uemura, R. Ishioka +11
We report on the results of the QW Ser campaign which has been continued from 2000 to 2003 by the VSNET collaboration team. Four long outbursts and many short ones were caught duri…
Superhumps in Cataclysmic Binaries. XXIV. Twenty More Dwarf Novae
J. Patterson, J. Thorstensen, J. Kemp +23
We report precise measures of the orbital and superhump period in twenty more dwarf novae. For ten stars, we report new and confirmed spectroscopic periods - signifying the orbital…
The 2001 Superoutburst of WZ Sagittae
J. Patterson, G. Masi, M. Richmond +25
We report the results of a worldwide campaign to observe WZ Sagittae during its 2001 superoutburst. After a 23-year slumber at V=15.5, the star rose within 2 days to a peak brightn…
Kilo-Second Quasi-Periodic Oscillations in the Cataclysmic Variable DW Cancri
M. Uemura, T. Kato, R. Ishioka +2
Our photometric monitoring revealed that DW Cnc, which was originally classified as a dwarf nova (V=15--17.5), remained at a bright state of Rc=14.68+/-0.07 for 61 days. In conjunc…
First detection of the growing humps at the rapidly rising stage of dwarf novae AL Com and WZ Sge
Ryoko Ishioka, Makoto Uemura, Katsura Matsumoto +11
We report on time-series photometric observations in the earliest stages of superoutbursts of the extreme dwarf novae, AL Com and WZ Sge, which started on 2001 May after the 6 year…