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(cba:news) V598 Puppis - and its deckmates (Joe Patterson) [2018-12-27T14:50:20Z]


Hi CBAers,

This peculiar 2007 nova - sometimes called Nova Pup 2007b - was covered pretty well last year by Gordon and Berto. It showed decent but not decisive evidence for periodic signals at 33 and 21 cycles/day. We just started this season's campaign... but Josch joined the act, and the evidence now looks very, very good - especially the 33. Thus it is probably a new intermediate polar, and should be considered very high priority now.

It's confusing, because the other 2007 Puppis nova, V597 Pup, is also probably an intermediate polar (according to Warner and Woudt). Keep 'em straight. V597 Pup also a very tempting target, if you can handle the required short integration time (~1 minute for the 4.5 minute period), near 17th magnitude (or fainter?)

This - the DENSE coverage of V598 Puppis over the next ~2 weeks - is now the highest priority among (faint) southern targets. ES Cet and T Pyx are nailed down for the year - well-behaved stars! CP Pup can wait. HZ and V667 complete the traffic jam of CBA stars on the poop deck.

joe p

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