On Tue, Sep 12, 2000 at 07:54:18PM +0900, Taichi Kato wrote: > PQ Aql outburst > > The long-period SU UMa-type candidate PQ Aql is reported to be in > outburst. The last outburst was reported in 2000 March by Patrick Schmeer. > A long outburst was observed in 1999 November (see below). All in all I observed three PQ Aql outbursts with the IRO: 1999 Nov. 8 mag 14.5: supermaximum (vsnet-alert 3676) 2000 Mar. 17.519 UT mag 15: normal outburst (vsnet-alert 4419) 2000 Apr. 17 mag 15.5: supermaximum (vsnet-alert 4641) The mean cycle length may be about 1 month and the supercycle about 5 months, so the current outburst could well be another supermaximum. > YYYYMMDD(UT) mag observer > 20000906.810 <151 (T. Kinnunen) > 20000907.810 <153 (T. Kinnunen) > 20000909.819 <153 (T. Kinnunen) > 20000910.810 <153 (T. Kinnunen) > 20000911.810 154 (T. Kinnunen) > > Time-resolved photoemtry during the present outburst is strongly encouraged > in the context of continuing VSNET campaign. > > cf. vsnet-alert 3690: > > PQ Aql time-resolved CCD photometry > > From the CCD observation of PQ Aql on Nov. 9, we have detected light > modulations (~0.10 mag), which may be attributable to superhumps. > The possible period of the light modulation was 0.1 d or slightly longer, > which makes definitive period determination difficult from a 3-hour run. > Further observations are strongly urged to accurately determine the > nature of the variability. > > Regards, > Taichi Kato, Makoto Uemura I thought PQ Aql had been confirmed as an SU UMa-type dwarf nova (cf. the following report). -------------------------------------------------------------------------- Date: Mon, 15 Nov 1999 19:54:02 +0900 (JST) From: Taichi Kato <tkato@kusastro.kyoto-u.ac.jp> Subject: [vsnet-obs 24717] PQ Aql (Ouda team) Nov. 13 PQ Aql (Ouda team) Nov. 13 Representative averaged magnitude: AQLPQ 991113.445 15.42C Oud time-series, clear superhumps Observers: T. Kato and M. Uemura Telescope: 25-cm SCT + ST-7 unfiltered Comparison: GSC1066.287, Rc=10.09 assumed -------------------------------------------------------------------------- Some CBAers (e.g. L.T. Jensen, T. Vanmunster) did also obtain time-series during the 1999 November superoutburst, but I can't remember having seen their results. Regards, Patrick