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(cba:news) AH Pic signal (Joe Patterson) [2006-12-23T14:52:35Z]


Dear CBAers,

Greg Bolt's two nights establish that a signal at 3.5 hours - most likely orbital - exists in AH Pic. It looks decently easy to track, and bright enough at 14.2. This would be a great target for intensive southern coverage the next couple of weeks. If you can, take the integrations down to 30 s or so - there is some hint of fast periods in this star.

As for what suppressed the periodicity in 2002 - who knows?! Maybe the signal is really a superhump... a few weeks of coverage should clarify this.

As for the north, we're still hanging on to Var Cam 06 = 0557+68. Down to 15.5 now, and soon will disappear from our radar screens... but get it while the gettin's good! 76 minutes, impressively short.

joe