[vsnet-alert 9240] Re: TV Col outburst

[uemuram at hiroshima-u.ac.jp]

  We have performed 2.6-hour time-series optical-infrared photometry 
of TV Col during the last outburst.  Temporary results are shown at 
the following page:

    http://kanatatmp.blogspot.com/search/label/TV%20Col

TV Col was in a rapidly fading state.  The fading speed is quite
large, ~4.4 mag/day.
Our simultaneous optica-infrared observation shows 
a hint of pulses from the white dwarf in TV Col, and
a relatively red color during the outburst (V-J~0.5-0.6).  

The object is now at quiescence:
COLTV 20070312.43840  13.97V  KANATA

Future multi-longitude observations are needed in order to study 
the whole evolution of accretion disks during short outbursts of 
a sub-group of intermediate polars, like TV Col, HT Cam, and DO Dra.
Due to their short durations of outbursts, close monitoring is 
encouraged.

Regards,
Makoto Uemura and Akira Arai
Hiroshima University