QW Ser (=TmzV46): New SU UMa-type dwarf nova

P. Schmeer reported an outburst of the SU UMa-type candidate QW Ser at 13mag on May 1. Two previous outbursts were detected by him in October 1999 (long outburst = supermaximum?) and in early January 2000 (short outburst) (vsnet-alert 4740, 4751).

P. Schmeer caught the other bright outburst of QW Ser (vsnet-campaign 302). CCD photometry performed by R. Novak at Nicholas copernicus observatory definitely showed the superhumps and established that it is a new SU UMa-type dwarf nova (vsnet-campaign 317, vsnet-alert 5072).

R. Novak reported the superhump period of 0.0773(1)day and amplitude of 0.15(2) mag (vsnet-campaign 327). E. Pavlenko reported their observations which yielded the superhump amplitude to be 0.15mag and the period to be 0.070+-0.003d (vsnet-campaign 324). G. Masi reported his light curve which showed another short hump on normal superhump light curve (vsnet-campaign 348, vsnet-campaign-data 10). M. Richmond reported his run at RIT observatory at: http://a188-L009.rit.edu/richmond/qwser/jul6_qwser.dat, http://a188-L009.rit.edu/richmond/qwser/jul7_qwser.dat (vsnet-campaign 362, vsnet-campaign-data 24). R. Novak reported his observation on July 12 which showed a shorter period 0.0736(3)d and no evidence of the superimposed hump (vsnet-campaign 363). The time-series data by G. Masi, S. Kiyota, and L. Cook are available at: vsnet-campaign-data 11, 12, 13, 14, 19, 20, 21). The superoutburst has entered the rapid fading stage on July 20 at 14.5mag by A. Pearce (vsnet-campaign-dn 51).

Light Curve and General Information of This Object