[Date Prev][Date Next][Date Index]

(cba:news) outbursting dwarf novae (Joe Patterson) [2008-08-06T03:57:24Z]



Dear CBAers,

The dwarf novae have been a little quiet in our sky lately. But there are three freshly erupted which are likely to be good targets.

HO Del has had very little activity in the last decade, and has just erupted to what is very likely a full superoutburst. Perfectly placed (transiting near local midnight), it's a GREAT target for borealites, and quite possibly OK for some of the australites too (at +14 degrees).
Fire away!

The two fully southern DN are more speculative. V893 Sco is a bright eclipser, and we would love to find superhumps in it - and sort of expect them. But they've never been found, despite the very favorable Porb. Very odd. Bright now at 12.7.

RU Hor is a very sparsely observed SU UMa star, and really needs a substantial observing campaign to nail down its credentials. Bright now at 14.0 - time for action!

Best to take one of these and fire away for time series as long and as sustained as possible. That's almost always a very good observing strategy - and I think it is here.

joe