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(cba:news) RX And, done for the year; V592 Cas, FY Per, FS Aur, ES Cet (Joe Patterson) [2014-10-28T12:47:44Z]


Dear CBAers,

The response for the RX And campaign has been wonderful; I can hardly imagine getting any better coverage from the Earth's surface. The star's low states (where the periodicity lurks) are of short duration, so we have to analyze each one separately. We'll never do better than we just did - so I recommend that we END the campaign now. It certainly looks like we got what we wanted and more.

Another bright target perfectly placed in the sky is V592 Cas, and that's a good candidate to RX And for you bright-star-loving northern CBAers. Or FY Per; the latter is a true mystery - we're practically clueless re this star - but it presents a big observational problem: the variation is quite weak, and you must use a filter (V) to subdue differential extinction. It seems to have a 1.6 hour spectroscopic period, and a 6.2 hour photometric period. The latter is weak and not necessarily permanent - so really needs to be firmed up, or rejected. Tough observational problem, though. FY Per is FS Aur's only hope to have a cousin in the CV zoo.

And for that matter, there's FS Aur itself, presenting a similar but somewhat better documented mystery [P_phot = 3.1 hr, P_spec = 1.4 hr]. Good year and month to revisit this guy! Not as formidable a challenge, but also very low in entertainment value - at first sight the light curve seems erratic and not interesting. We definitely want a few exploratory runs on these two stars - then we'll see where to go.

Whereas V592 Cas is a sure winner no matter what shows up.

Of course, ASASSN-14ei continues to produce pure gold - gold at 47 degrees south. No CBA action yet on ES Cet yet - but that would be mighty nice to start!

joe p

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