(cba:news) OT_J112253.3-111037 = CSS100603:112253-111037, among others

[Joe Patterson]

Dear CBAers,

Another Catalina transient with excellent credentials for joining the SU 
UMa club.  Tom's photometry last night, at V~14, showed quite nice 
humps, and at an interestingly short period.

Not the greatest sky position for June (Crater)... but close enough to 
the equator that we might be able to patch together a round-the-world 
light curve that will reveal the precise period structure.  Yet another 
new toy in the southern sky.  The others of very high merit right now 
are GW Lib and RX1654-19.  All are flashing quite fascinating - and new! 
- periodicities in their light curve right now.  It's usually 
advantageous to "stick with one star" as long as it's available in the 
sky... but the new dwarf nova is a transient object, plus it's 
disappearing in the west (both points raising its priority, maybe).

And of course don't forget OT2138+26, the new dwarf nova in Pegasus. 
*Very* inconveniently placed, but this star is not only new but 
*nearby*.  Such stars have a high impact on CV science; the fact that 
we're still discovering new CVs within 100 pc or so is evidence that a 
lot of stars are still hiding!

joe


-------- Original Message --------
Subject: [vsnet-alert 12020] OT_J112253.3-111037 = CSS100603:112253-111037
Date: Thu, 3 Jun 2010 16:01:17 +0900
From: Hiroyuki Maehara <maehara at kwasan.kyoto-u.ac.jp>
To: vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp, 
vsnet-outburst at ooruri.kusastro.kyoto-u.ac.jp, 
vsnet-campaign-dn at ooruri.kusastro.kyoto-u.ac.jp, 
vsnet-newvar at ooruri.kusastro.kyoto-u.ac.jp

  The CRTS (Drake et al. 2009, ApJ, 696, 870) detected a bright (14.3mag)
optical transient CSS100603:112253-111037 at R.A. = 11 22 53.33,
Decl.=-11 10 37.2.

1006030090614101504 2010-06-03T04:05:44 2010-06-03T03:56:53 11 22 53.33 
-11 10 37.2 14.32 14.32 14.29 14.30 
http://nesssi.cacr.caltech.edu/catalina/20100603/1006030090614101504.html

  The object has a faint blue counterpart (~ 20 mag) in the SDSS photometric
catalog and the USNO B-1.0 catalog. The object is likely a large-amplitude
dwarf nova in outburst.