[vsnet-alert 9630] 1RXS J023238.8-371812: brightening?

[Makoto Uemura]

1RXS J023238.8-371812: brightening?

We have managed to perform short runs for this object 
on 30 Sep. and 1 Oct using the KANATA 1.5-m telescope 
(observer: A. Arai & R. Matsui).  
The V- and J-band light curves indicate a brightening 
trend in those two days.  

YYYYMMDD(UT)   V mag.
20070930.74412 12.92
20071001.80266 12.19

http://kanatatmp.blogspot.com/search/label/J0232

The V-J color is about +0.05, similar to the color of 
dwarf novae in outburst.  Such a brightening is, however, 
atypical for dwarf novae.  
The nature of this object is still unclear.
We will keep monitoring of this object, but it is hard 
for us to take a long time-series run of this object 
here in Hiroshima.

Regards,
M. Uemura, A. Arai, and R. Matsui
on behalf of the KANATA team
Hiroshima University