[vsnet-outburst 19087] ASASSN-15ux: eclipsing WZ Sge-type

[Taichi Kato]

ASASSN-15ux: eclipsing WZ Sge-type

   As expected, this object started to show eclipses.
Report from Enrique de Miguel:

        Excluding the JD 401 run, in which the superhump wave
        nearly overrides the eclipse, the (orbital) ephemeris
        I find is

          HJD(min) = 400.3232(4) + 0.056107(7) E

        using JD 400, 403, and 404 runs.

          There is a strong interaction between the 
        superhump and orbital waves, and this results in a 
        strong beat. A more reliable value would require
        covering several beat cycles.
        
         Porb is consistent with the best estimate of the 
        periodicity of early superhumps, P_esh = 0.056092(4) d,
        and the known observational fact that P_esh is essentially
        equal to Porb.

         Removing the eclipses, the resulting (mean) frequency
        of the superhump wave since JD 400 is 17.547(6) c/d, 
        consistent with the value:

        fsh = 17.544(7) c/d --> Psh = 0.056999(2) d

        after timing the maxima of the superhump