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vsnet-campaign-ip@ooruri.kusastro.kyoto-u.ac.jp,
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vsnet-outburst@ooruri.kusastro.kyoto-u.ac.jp
Subject: HT Cam in outburst! URGENT observations are needed!
From: Ryoko Ishioka <ishioka@kusastro.kyoto-u.ac.jp>
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HT Cam bright outburst!
As Eddy Muyllaert (Oostende, Belgium) reported, HT Cam (a ultra
short-period CV; also renowned for its infrequent very brief outbursts)
is undergoing an unprecedentedly bright outburst!! [vsnet-alert 7617]
All sorts of observations (time-resolved continous photometry,
spectroscopy, X-ray observation etc.) are MOST URGENTLY needed.
The object is currently the top priority target of the VSNET campaign.
The outburst is probably very short (within 3 days) and immediate
observations are needed. But there still remains the possibility
that this object is an SU UMa star and this outburst is a superoutburst.
Please observe this objest as long as possible and keep us informed
of the progress of your observation!
During the last outburst occurred in 2001 Decmber, about 8 min
oscilation was detected. Fot more information of thie object, see
VSNET HT Cam Web page
(http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/htcam.html)
and
PASJ 54, 581 (2002) ishioka et al.
(http://vsnet.kusastro.kyoto-u.ac.jp/pub/vsnet/preprints/HT_Cam/)
Visual magnitude estimates by VSOLJ members
object YYYYMMDD(UT) mag code
CAMHT Jan 19.767 12.4 Seq. Henden
Best Regards,
Ryoko Ishioka
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