[vsnet-alert 3855] DV UMa superoutburst: rapidly fading now

[Taichi Kato <tkato>]

DV UMa superoutburst: rapidly fading now

  Our CCD observations at Kyoto (Uemura and Kato) last night has confirmed
that DV UMa has finally entered the rapid decline stage.  The nightly
averages (simple average including superhumps and eclipses) of the late
stage of the outburst are given.  The object has faded at a rate of nearly
1 mag/day.

   Dec.   V-C   err   N
 -------------------------
  19.644 4.113 0.019 479
  20.698 4.384 0.012 845
  21.698 4.492 0.024 505
  22.681 4.560 0.014 1019
  23.652 5.064 0.044 913
  24.586 5.973 0.223 422

  Comparison star:

GSC2998.515 094621.69 +444530.8 (2000.0) 11.27 1
USNO1275.07665973 094621.706 +444530.90 (2000.0) 11.2 12.1

  The effect of the moon getting smaller, observers are strongly urged
to continue observing DV UMa, until it fades away completely.
Collaborators of this DV UMa international campaign please should
send observations to uemura@kusastro.kyoto-u.ac.jp [with JD (no heliocentric
corrections should be applied) and differential magnitudes or relative fluxes].

  The updated combined results will appear on the VSNET DV UMa page:

  http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/dvuma9912.html

Regards,
Taichi Kato and Makoto Uemura

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