CV target suggestions for spring

Science Cataclysmic Variables
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Hi folks,

Here are a few CV target suggestions you might consider:

EI UMa - Intermediate Polar. Not much coverage so far this year. Runs as long as possible are most helpful. This is one of several IP’s that are known to flare. It’s running around 15m right now.

V667 Pup - Another IP with limited coverage so far this season. It is running between 14 and 14.5m.

V418 Gem - Evening object and in the latter part of its observing season so time series are particularly valuable to give a long baseline for this year’s data. 17th magnitude but with an 8 minute white dwarf spin rate, 2 minute exposures are not too long.

Clearest skies,
Walt

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Walt and others - I’m curious if the spin period is evident in the AAVSO data on EI UMa, and if so, in what filters. If I remember correctly, the spin modulation in this IP was very blue (maybe only in U band at times?).

Thanks, and cheers - Koji

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Hi Koji. I don’t know if we are able to see the white dwarf spin rate in our data. As you say, it is difficult in optical. Richard Sabo has been doing a bunch of IP white dwarf spin analysis for a paper that several of us are working on. He is better at that analysis than I am. I’ll ask him to take a look.

-Walt