QW Ser: Superoutburst in May-June
As reported by R. Stubbings on March 21, the SU UMa-type dwarf nova QW
Ser experienced an outburst. The reported magnitude (13.1mag) was slightly
fainter than those of past superoutburst maxima (vsnet-campaign-dn
2196). The object faded rapidly, which indicates the outburst was
a normal one (vsnet-campaign-dn
2201, 2206).
An outburst of 13.2mag was detected on May 29 by R. Stubbings. The object
was then reported to further brighten, which indicates that outburst was
a superoutburst (vsnet-campaign-dn
2478). The Kyoto team detected fully developed superhumps with amplitudes
of 0.3-0.35mag on June 2 (vsnet-campaign-dn
2506). The data on June 3 also showed prominent, sharp superhumps (0.20-0.25
mag)(vsnet-campaign-dn
2517). On June 7, T. Kato reported the decrease of amplitude of superhumps
to 0.15 mag. There was also a hint of secondary superhump (phase ~0.4)
(vsnet-campaign-dn
2525, 2603,
2604).
T. Kato reported that the light curve on June 9 showed the remarkable
evolution of sub-structures of superhumps. The most prominent feature
was likely "late superhumps" between superhump maxima (vsnet-campaign-dn
2544). The object had faded from the superoutburst since June 13
(vsnet-campaign-dn
2552, 2558).
Other articles:
vsnet-campaign-dn
2485, 2500,
2520,
2532,
2537,
2539