From jop at astro.columbia.edu Tue Aug 17 05:08:35 2004 From: jop at astro.columbia.edu (Joe Patterson) Date: Tue, 17 Aug 2004 05:08:35 -0400 (EDT) Subject: (cba:news) stars for mid-august Message-ID: Dear CBAers, Time for some target changes. V2527 Oph is still on the target list (oops), but has faded far below ready visibility. V603 Aql has been pretty good to us, sporting a positive superhump at 0.148 d, the longest it has ever achieved. I had hoped it would sport simultaneous positive and negative superhumps, which I wanted to study.. but not to be. It's a good time to retire V603 for the year. And a good time ro promote V1101 Aql as a prime (slightly) northern target. We did very well on this star last year, finding the orbital period, a negative superhump, and the beat period between the two. But we got off to a late start - so let's rectify that this year. I hope we can get some NZ/AU/ZA coverage as well, as well as the northern observations which are likely to be the main course. Then there's V1315 Aql. Thanks to Lew Cook and Bob Rea, this has been well covered too - with a very well defined negative superhump. But we'd like another week or two to wrap it up. And despite its dec (+12), it would be great if we could get some South African/Australian coverage, to increase the all-important longitude baseline. Finally there's the THREE DQ Her stars in good position now: V1223 Sgr, FO Aqr, AO Psc. No observations yet this season for these old favorites. We're trying to get a long baseline of pulse timings for a period study in the next year or two. A good month... many good new targets, and the Olympics too! joe