[vsnet-alert 12282] FO And: superhump period

[Taichi Kato]

FO And: superhump period

   Enrique de Miguel has reported the observations.  The mean superhump
period based on this single-night observation is 0.0744(1) d.
Despite that the object has been well-known, the evolution of superhumps
has not been well investigated.  Being located at a favorable place,
further observations to determine Pdot are encouraged.

(de Miguel's comment):
===

              Run confirming the superoutburst of this object, 
              suggested yesterday in vsnet-alert 12277. From the
              evolution of the brightness of this object in the 
              last days (vsnet-alert 12277), the superoutburst must
              have been triggered some time after Oct 15, so it
              may have started just 24-48 hours ago.

              Clear and neatly formed superhumps with peak-to-peak
              modulation of ~0.25-0.30 Cmags. This run covers ~5.5 cycles
              and includes 6 maxima.

              Using ANOVA, P_sh = 0.0745(12) d.
       
              A linear regression to the times of maxima:

               HJD(max)=2455487.3416(10) + 0.07431(35) E

              a value to be compared with 0.074554(52) quoted in
              Kato et al (Survey I, 2009 PASJ paper).