[vsnet-alert 11163] OT J102842.9-081927: V-J color

[Makoto Uemura]

OT J102842.9-081927: V-J color

  We performed time-series photometric observations of J1028-08 with 
the "KANATA" 1.5-m telescope last night (2 Apr).  We confirmed the humps
whose period is roughly consistent with the reported one.
The obtained light curves can be seen at:

http://kanatatmp.g.hatena.ne.jp/kanataobslog/?word="J1028-08"

  We found that the V-J color of the object is quite blue (V-J~-0.6). 
The V-J color is usually between -0.2 and 0.2 in normal dwarf novae in
superoutburst. In our past observations, CR Boo, an AM CVn star, 
exhibited a similar color during its superoutburst.

Regards,
M. Uemura, M. Sasada, and M. Yamanaka
on behalf of the KANATA team