[vsnet-superoutburst 664] WZ Sge superhump period

[Taichi Kato <tkato>]

WZ Sge superhump period

Dear Colleagues,

>    We have more closely examined these original data.  The cycle counts
> in Bohusz and Udalski 1979 have been found to be correct (to the present
> knowledge of the new superhump period), while there seem to be ambiguities
> in superhump identifications in Patterson et al. 1981.  We have securely
> identified three superhump timings on Dec. 22-25, and probable one on
> Dec. 28.  Three possible superhump timings on Dec. 19 and 26 do not match
> the currently determined period, and the ephemeris by Bohusz and Udalski
> 1979.  It is very likely the period of 0.05714 d was strongly affected
> by these "noisy" identifications.  Using new secure identifications of
> superhump times, from Bohusz and Udalski 1979 and Patterson et al. 1981,
> we obtained a refined superhump period of 0.05722 d for the 1978
> superoutburst.  This superhump period is 1.0% longer than the orbital
> period.

   This would indicate that WZ Sge has the perfectly same fractional
superhump excess as in AL Com!

Regards,
Taichi Kato
VSNET Collaboration team

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