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[vsnet-campaign 1129] WZ Sge: observation on Aug. 22

WZ Sge: observation on Aug. 22

Dear Colleagues,

    From the partial analysis of the Aug. 22 WZ Sge data, the linear fading
at a rate of 0.82 mag/d is confirmed.  The rate of decline is close to that
observed at the termination of the main superoutburst.

    Hump features are also superimposed on the fade, and seems to be growing
in amplitude as the system faded.  The profile is triangular, having a sharp
edge-like maximum.  The total ampliude (in average) was 0.06 mag.
The entire profile differs from all other past hump profiles observed during
the current superoutburst.  The hump minimum corresponds to the predicted
times of eclipses, but whether they represent real eclipses or hump minima
needs to be tested by further observation.  Sharply defined, short eclipses
have totally disappeared.

    More analysis is ongoing, and more result will be presented by Uemura-san
and Ishioka-san.

Regards,
Taichi Kato
VSNET Collaboration team

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