[vsnet-alert 9877] AQ CMi fading

Ohshima ohshima at kusastro.kyoto-u.ac.jp
Sat Feb 2 17:23:36 JST 2008

AQ CMi fading

 The UGSU type dwarf nova AQ CMi is undergoing a bright outburst
and fading rapidly.
 This outburst may not be a superoutburst, but a superoutburst.
However, this star kept the luminosity at around 15th mag after
it faded rapidly in 1996 outburst. 
 AQ CMi seems to undergo outbursts whose maximum was 14-15th at 
around 1 years interval until around 1999. However, outbursts 
have decreased in frequency (interval =  ~2 years) and the maximum
luminosity got to fainter (see the following outburst list) recently.
 While this star seemed to underwent successive 3 superoutbursts in
1996-1998, no definite superoutbursts have been after that (despite of
some doughtful superoutburst). This is interesting unless this trend
stems from a simple overlooking.

Past outbursts;
1996 Feb. 144    (Jochen Pietz)     superoutburst
1997 Mar. 143    (Gary Poyner)      superoutburst
1998 Oct. 146    (Rod Stubbings)    probably superoutburst
1999 Feb. 146    (Gary Poyner)
2002 Feb. 151    (Maciej Reszelski)
2003 Jan. 159:   (Mike Simonsen)
2005 Feb. 164:C  (Masayuki Moriyama)

Recent observations;
  20071123.842  <16.23V  (Hiroshi Itoh)
  20071124.794  <16.23V  (Hiroshi Itoh)
  20071207.801  <178C  (Hiroyuki Maehara)
  20071209.135  <152  (Gary Poyner)
  20071209.833  <185C  (Hiroyuki Maehara)
  20071231.671  <17.05V  (Hiroshi Itoh)
  20080105.590  <16.23V  (Hiroshi Itoh)
  20080106.044  <152  (Gary Poyner)
  20080108.022  <151  (Gary Poyner)
  20080116.648  <147C  (Masayuki Moriyama)
  20080118.572  <16.47V  (Hiroshi Itoh)
  20080124.649  <152C  (Masayuki Moriyama)
  20080125.596  <16.47V  (Hiroshi Itoh)
  20080127.964  <151  (Gary Poyner)
  20080131.478   146  (Rod Stubbings) 
  20080131.579  15.02V  (Martin Nicholson)
  20080131.584  15.03V  (Higashi-Hiroshima Observatory (Hiroshima Univ.))
  20080201.398  16.01V  (Higashi-Hiroshima Observatory (Hiroshima Univ.))

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