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(cba:news) Fwd: [vsnet-outburst 15091] TCP J15375685-2440136: large-amplitude transient (Joe Patterson) [2013-02-09T06:36:09Z]


Wow, this star's a little out of season, but kind of sensational. Dwarf novae in (super)outburst are a pretty good standard candle at absolute magnitude 4.6. That makes this one about 12.7 in quiescence, which is faint even for a bare white dwarf - so the accretion disk must be really, really faint. We love such stars, and there are precious few of 'em. They're probably the oldest CVs in the zoo, and that's where we've had some of our best successes - in geriatric CV-ology.

Not convenient for anyone (since southerners have short nights now). But let this star not go unmolested. Fight the good fight against airmass and twilight.

joe






TCP J15375685-2440136: large-amplitude transient

   Itagaki-san has informed that he detected a bright transient.

2013 02 08.7797*  15 37 56.85 -24 40 13.6  13.6 U     Lib
http://www.k-itagaki.jp/images/tcp-lib.jpg

   GSC 2.3.2 gives j mag of 21.74.  The outburst amplitude is 8 mag.
The object looks likely a WZ Sge-type dwarf nova.
Observations are encouraged.