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[vsnet-campaign 1209] 1RXS J232953.9+062814: strong humps
1RXS J232953.9+062814: strong humps with a very short period
Our reduction of the last night data is now ongoing. The preliminary
light curve is very impressive. We can see three humps with amplitudes
of 0.3 - 0.4mag in our first 2.9 hours run. Our period analysis
yields the period of 0.04320(79) d. The fast-rise slow-decline profile
of these humps strongly indicates that these are superhumps.
In this part of the light curve, the object rapidly faded with a rate of
2 mag/day. Confirmations of the current status of this object are
very urged.
The ~0.043 day period superhumps are the shortest one among hydrogen
rich cataclysmic variables except for the SU UMa-type dwarf nova, V485 Cen.
It is possible that the humps are double peaked and its real period is
~0.086 day. If it is the case, the orbital period of this object
may be near the lower edge of the period gap.
Anyway, it is certain that 1RXS J232953.9+062814 is very interesting
and important object for the cataclysmic variable study. Follow-up
time-series observations are strongly encouraged.
Regards,
Makoto Uemura, Ryoko Ishioka, and Taichi Kato
vsnet-adm@kusastro.kyoto-u.ac.jp
Return to Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
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