[vsnet-outburst 8571] SU UMa bright outburst

Ohshima ohshima at kusastro.kyoto-u.ac.jp
Tue Feb 12 14:19:15 JST 2008


SU UMa in bright outburst

 The UGSU type dwarf nova SU UMa is undergoing a bright
outburst.
 Since six months have passed since the last (probable)
superoutburst and the decline speed is not so rapid,
this outburst is a superoutburst.
 I think the maximum of normal outbursts of this star
is recently a little fainter than before.
 Though this star used to reach 12.0 in normal outburst
until ~2005, this star brightened up to only 12.5-13.0
in 2007 except for 1 normal outburst.

Past superoutbursts;
  2006 Feb   113  (Jose Ripero)
  2006 Sep   110  (Dariusz Dorda)

  2007 Aug   114  (John Toone) (only 1 observation)
Recent observations;
  20080202.121  14.96V  (Etienne Morelle)
  20080202.796  <141  (Jose Ripero)
  20080202.901  <141  (Franck Gobet)
  20080202.982  14.86V  (Etienne Morelle)
  20080204.883  <141  (Eddy Muyllaert)
  20080205.890  <141  (Franck Gobet)
  20080206.881  <141  (Franck Gobet)
  20080206.903   144  (Eddy Muyllaert)
  20080206.998  15.11V  (Etienne Morelle)
  20080207.842  <141  (Jose Ripero)
  20080207.881  <141  (Eddy Muyllaert)
  20080208.101  <141  (Pavol A. Dubovsky)
  20080208.801   149  (Gary Poyner)
  20080208.880   144  (Eddy Muyllaert)
  20080208.917  <141  (Franck Gobet)
  20080209.008  14.50V  (Etienne Morelle)
  20080209.806   126  (Jose Ripero)
  20080209.815   120  (Gary Poyner)
  20080209.876   122  (Eddy Muyllaert)
  20080210.005   123  (Pavol A. Dubovsky)
  20080210.806   124  (Jose Ripero)
  20080210.831   118  (Gary Poyner)
  20080210.874   125  (Franck Gobet)


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