Re: GW Lib, OT1625+12, V603 Aql

From: Joe Patterson <*jop_at_astro.columbia.edu*> Date: Wed, 07 Jul 2010 04:35:46 -0400 · jop_at_astro.columbia.edu

Oops, in my previous GW Lib message, I meant 2010, not 2005.  I 
especially hope southerners will take advantage of the next 10 days to 
work on this faint and challenging star.  After that, we definitely 
should give up - it just can't survive the extra challenge of moonlight.
I apologize for whining about it; we're about to finish a big paper on 
GW Lib, and that usually sets off a frenzy of whining ("if only we had 5 
more long nights of data!")

Meanwhile, as many of you know, Gianluca Masi has found strong 
superhumps with P~2.1 hrs in OT1625+12 (the new CSS transient; maybe I 
should call it CSS1625+12).  13th mag, a nice target for everyone, and 
with a nice spectroscopic period to boot.  Fire away.

By the way, the first few runs on V603 Aql by George Roberts and Tut 
Campbell also suggested large-amplitude superhumps.  Almost certainly a 
very rewarding target for the very near future, or possibly now.  At 
11.5, no complaints about brightness - but use a V filter if you have 
one (because it'll likely avoid saturation, and also because it'll 
greatly subdue differential extinction, which is quite a serious problem 
for long runs on equatorial stars).

joe

Oh... and further on GW Lib, now that I've thoroughly studied all the 
pre-2010 data (ours, the AAVSO, the high-energy data of Byckling et al. 
2009), I just have to exult about what a great treasure trove this is.
Rod Stubbings found the 2007 eruption in a very early stage, the alert 
networks worked well, the community jumped to action, and we basically 
have a dwarf-nova eruption fully monitored at all relevant wavelengths 
and times.  And for a star of known (trig-parallax derived) distance. 
Wow.  Maybe even better than WZ Sge's 2002 blowout.
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