[vsnet-alert 12867] Re: unknown star outburst

[Taichi Kato]

Re: unknown star outburst

(OT_J002641.6+832408)

> 2MASS 002641.840 +832409.32 (2000.0) 16.464 15.801 15.220 
> But, this object is faint even in 2MASS, and should be much fainter
> in the visual wavelengths.  I therefore suspect that the outburst
> is a kind of a "superflare".

   The above J-Ks color (+1.2) corresponds to M8

http://www.ipac.caltech.edu/2mass/gallery/ldwfig1.gif

   The expected R-Ks = +7, corresponding to R=22.  The amplitude
of the flare probably reached 10 mag.

One of prototypical references:
http://adsabs.harvard.edu/abs/1990ApJ...353L..25S

   The flare in the present object is more intense!

   Would be comparable to an 11 mag flare in the U band:

http://adsabs.harvard.edu/abs/2001AstL...27...29B