(cba:news) Fwd: [vsnet-outburst 15091] TCP J15375685-2440136: large-amplitude transient
jop at astro.columbia.edu
Sat Feb 9 01:35:31 EST 2013
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.
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
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.
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