(cba:news) V632 Cygni
jop at astro.columbia.edu
Wed Nov 12 12:02:34 EST 2008
Full report tonight. In the meantime, let's try hard to track V632 Cyg
around the globe. Tom Krajci found the superhumps, and if we can
squeeze out some off-longitude light curves (probably Europe, I
imagine), we can probably solve the nightly alias problem. Around 14th
mag and (super)humping away. Just 0.15 mag full amplitude, not quite as
bullish as some of the recent guys. Then we need about five days of
coverage to get a decently tight error bar on P(superhump).
Even though it's obscure star, it has a known Porb - and that makes it
important, because the offset (Psh-Porb) is a measure of the disk's
precession rate, which in turn tells us the mass ratio.
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