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(cba:news) V392 Per... and CI Aql (Joe Patterson) [2020-08-23T15:11:51Z]


Hi CBAers,

Joe Ulowetz's recent (this week) photometry suggests that this obscure star in Perseus - before its 2018 nova event - is flashing a T-Pyx-like short-period (orbital?) signal at us. That would be mighty nice, and the star has arrived back in the morning northern sky for decently long morning runs. I believe that there is a companion about 8 arc-sec away, so be mindful of that hazard. Otherwise, it seems to be an ideal target, at about magnitude 15 and likely giving good clues on what novae do a few years after eruption. (A phase for which there is not a whole lot of compelling evidence.)

We have a pretty good month-long campaign going on another od nova, CI Aql. This one is a fully (OK, almost fully) credentialed cousin of T Pyx; and indeed, its light curve looks similar too. However, its near-equatorial location and long Porb (15 hours) means that no one can actually record an orbit - or anything close - in one night. So it's a tad difficult to piece together relatively short light curves - because of the inevitable night-to-night erratic variability. See if you can get some 5- and 6- hour light curves, and if they were patched pretty close together in time, so much the better.

We have a paper on IM Nor (a T Pyx clone) almost ready to ship, and it includes analysis and long-term records on V617 Sgr (nominally a V Sge star) and QR And (nominally a supersoft). Presented together because in my view, these are basically the same type of star - a massive WD accreting at a very high rate. So those stars are OFF THE TARGET LIST until February at least. I'll send the draft around in a few weeks (sooner if you're vitally interested).

joe p
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