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(cba:news) IM Nor and friends... plus V392 Per and novae generally (Joe Patterson) [2020-10-16T18:33:17Z]


Hi CBAers,

Our long campaign on IM Nor has ended, and here's what came out:

https://arxiv.org/ftp/arxiv/papers/2010/2010.07812.pdf

Comments solicited. Submission to a regular journal is still a ways off. Since there's some pretty speculative stuff in there, I've got to sit on that for a little while first. What seems exciting on a Monday can sometimes look pretty spacey by Friday!

But I've sure gotten seduced by these novae! (Supersofts too, but there are precious few them in our galaxy.) So here's a list of novae which I think are promising for Oct-Nov observing.

V392 Per. Lots of good data from USA observers (especially western USA - mainly Richard Sabo and Waly Cooney). Even more from Joe Ulowetz, and I use his data for calibrating everyone since his location is central in North America. But not much from Europe, which we really need, because the periodic-signal search in this star is TRICKY - we just need to splice together runs over a wide range of longitude. 15th mag, well placed in the sky... and a star which seems destined for greatness (the only dwarf that became a nova!

There are some other (now quiescent) novae which are good targets in Oct-Dec. Here they are: V597 Pup, CP Lac, DN Gem, and maybe KT Eri. I don't know much about these - maybe just or two of them really is a good target. Use your judgment.

I guess it's too late for V1974 Cyg. But if you can get ~3 hours on this star, that's the best northern target of all.

joe


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