[vsnet-alert 10312] V2468 Cyg rebrightening

[Taichi Kato]

  As reported in CBET 1431, V2468 Cyg appears to be experiencing
a rebrightening phenomenon.

  Recent observations:

  YYYYMMDD(UT)   mag  observer
  20080606.067   125  (Gary Poyner)
  20080606.651  12.12V  (Kazuhiro Nakajima)
  20080606.654  10.27Rc  (Kazuhiro Nakajima)
  20080606.659  12.22B  (Kazuhiro Nakajima)
  20080606.665  12.35y  (Kazuhiro Nakajima)
  20080607.060   128  (Gary Poyner)
  20080610.074   128  (Gary Poyner)
  20080613.055   127  (Gary Poyner)
  20080613.613  12.75y  (Kazuhiro Nakajima)
  20080613.617  12.28V  (Kazuhiro Nakajima)
  20080613.622  10.43Rc  (Kazuhiro Nakajima)
  20080613.627  12.30B  (Kazuhiro Nakajima)
  20080615.072   127  (Gary Poyner)
  20080616.073   127  (Gary Poyner)
  20080622.949   122  (Wolfgang Kriebel)
  20080622.9639  122  (Hubert Hautecler)
  20080624.674  10.17Rc  (Kazuhiro Nakajima)
  20080624.678  11.60V  (Kazuhiro Nakajima)
  20080624.679  12.13B  (Kazuhiro Nakajima)
  20080624.690  12.25y  (Kazuhiro Nakajima)
  20080627.656  12.19V  (Hiroshi Itoh)
  20080628.9590  122  (Hubert Hautecler)
  20080629.078   125  (Gary Poyner)
  20080630.058   125  (Gary Poyner)
  20080630.985   121  (Wolfgang Kriebel)
  20080701.065   122  (Gary Poyner)
  20080703.558  11.90V  (Hiroshi Itoh)
  20080704.065   122  (Gary Poyner)

   It might be noteworthy that Rc-band brightening (June 24) preceded
the present brightening.  This might be due to the enhanced H-alpha
emission line.

   Let's see whether this rebrightening follows a course similar to
those of V2362 Cyg and V1493 Aql.  Densely sampled high-resolution
spectroscopy, photometry and multiwavelength observations are
requested.