V344 Ori : Long, bright outburst, but without superhumps
On January 15, R. Stubbings detected a relatively rare outburst of
V344 Ori. The last outburst was reported in 1999 November (mv=14.0).
This outburst outshined the GCVS maximum (14.2p)
(vsnet-campaign 692).
On January 16, M. Uemura reported a possible superhumps
(vsnet-campaign 696),
however these modulations however turned out to be more irregular rather
than typical superhumps. T. Vanmunster performed 7.7 hours time-series
photometry on January 16/17, and reported that there's indeed a 0.1 mag
modulation, but it definitely doesn't look like a common superhump,
being very irregular in shape and pattern
(vsnet-campaign 698).
From the data by VSNET collaboration team on January 16 - 19
(the Kyoto team, B. Martin, the Nyrola team, H. Boffin, J. Pietz,
T. Vanmunster), M. Uemura reported that the object gradually faded with
a rate of 0.08mag/d, and the modulations show a weak periodicity of
0.066 and 0.039 day, however their amplitudes is very variable between
0.02 - 0.1mag
(vsnet-campaign 706).
T. Vanmunster commented the similarity of the activity of V344 Ori
to that of V405 Vul
(vsnet-campaign 708).
Following this, T. Kato also commented that EP Car also showed similar
activity on 2000 February
(vsnet-campaign 710).
From M. Moilanen's CCD images taken on January 20, M. Uemura estimates
B-V=0.271 and V-R=0.246 of V344 Ori using Henden's sequence. In the
light curve on January 22/23 by B. Martin, we can see two maxima whose
interval is about 3 - 4 hours, and shorter time-scale modulations are
also seen
(vsnet-campaign-dn 414).
M. Uemura reported the object entered a rapid decline phase on January
24
(vsnet-campaign 713).
CCD image taken at Kyoto
CCD image provided by M. Moilanen
Other related articles:
vsnet-campaign-dn 397,
396,
399,
402,
404,
406,
407,
410,
423,
vsnet-campaign 699,
693,
vsnet-campaign 700,
701,
702,
703,
704,
705,
707
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