DH Aql: Superoutburst in July
As detected by R. Stubbings on July 27, the SU UMa-type dwarf nova, DH
Aql started its outburst (12.6mag). The Kyoto team confirmed this outburst
at Rc=12.56 on July 27 13:30 (UT). The last superoutburst was reported
on 2000 July 31 (vsnet-campaign-dn
2661). The light curve on July 27 obtained by the Kyoto team showed the
presence of humps with an amplitude of 0.1 mag. T. Kato reported that
these humps seem to be superhumps at the growing stage (vsnet-campaign-dn
2667). R. Santallo reported a detection of clear superhumps (amplitude
0.11mag) on July 28 (vsnet-campaign-dn
2668, 2671).
The light curves after July 29 show fully-grown superhumps (vsnet-campaign-dn
2677, 2678,
2685,
2689,
2693).
M. Uemura reported that the data sets obtained by the VSNET collaboration
team showed a superhump period of 0.080029 +/- 0.000008 d. He also noticed
that the data showed a gradual decreasing of superhump period during July
29 - August 1 (vsnet-campaign-dn
2699). M. Uemura reported a detection of superhumps and substructures
on August 5 and 6 (vsnet-campaign-dn
2710). The superoutburst entered a rapid fading phase on August 7
(vsnet-campaign-dn 2709, 2712, 2716). T. Kato reported the object was
still significantly above quiescence (15.5-16 mag) on August 9 (vsnet-campaign-dn
2719). No rebrightening has been reported (vsnet-campaign-dn
2729, 2737).
Other articles:
vsnet-campaign-dn
2662, 2674,
2676,
2670,
2681,
2687,
2694,
2698).
DH Aql Time-series observations by T. Richards, see [vsnet-campaign-data
100, 101]