[vsnet-outburst 6930] CI UMa likely superoutburst following a precursor

[Taichi Kato]

   The SU UMa-type dwarf nova CI UMa is very likely undergoing
a superoutburst following a precursor outburst on July 11.
No similar outburst (precursor + superoutburst) has been found
in the past record.  Time-resolved photometry, especially during
the early stage of the superoutburst (now), is strongly urged
since superhumps can show different period behavior during
a superoutburst with a precursor (cf. Uemura et al. 2005,
A&A 432, 261; astro-ph/0411523)

  YYYYMMDD(UT)   mag  observer
  20060701.942  <141  (Gary Poyner)
  20060701.948  <141  (Eddy Muyllaert)
  20060702.942  <141  (Eddy Muyllaert)
  20060703.954  <141  (Eddy Muyllaert)
  20060709.935  <141  (Gary Poyner)
  20060711.944   144  (Gary Poyner)
  20060713.962   149  (Gary Poyner)
  20060714.935  <141  (Gary Poyner)
  20060715.946  <141  (Gary Poyner)
  20060717.924   140  (Gary Poyner)
  20060717.925   141  (Eddy Muyllaert)