(cba:news) V2491 Cyg

Joe Patterson jop at astro.columbia.edu
Thu Jun 5 15:49:09 EDT 2008

Dear CBAers,

There's quite an interesting new nova in the morning sky this month (and 
last): V2491 Cyg, at 19h 43m 2.1s +32d 19m 12.8s.  It has become a 
supersoft source, and my guess is that it's powering a nice orbital 
signal around now (or perhaps in a few weeks)... from reprocessing in 
the atmosphere of the orbiting secondary.  Let's have a look and see!
A few nights of light curve will suffice... and if the answer's no, try 
again in a month.  Nice experiment - the WD-facing hemisphere of the 
secondary acts as a "bolometer" for the hot WD.

GW Lib and SDSS1627+12 continue to be excellent targets, too!


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