[vsnet-alert 24529] TCP J00114297+6611190 (Nova Cas 2020) sudden fading

[Taichi Kato]

TCP J00114297+6611190 (Nova Cas 2020) sudden fading

   Many observers (including Sano-san, who has been reporting
time-resolved observations) have noticed the sudden fading
of this nova.

  YYYYMMDD(UT)   mag  observer
  20200808.917   111  (Gary Poyner)
  20200809.1700 11.04V  (Gustav Holmberg)
  20200810.083  10.72C  (Gary Poyner)
  20200810.860  106V  (Klaus Wenzel)
  20200811.083  10.83C  (Gary Poyner)
  20200812.078  10.98C  (Gary Poyner)
  20200812.883   122  (Balazs Bago)
  20200812.972   122  (Klaus Wenzel)
  20200812.982  121V  (Klaus Wenzel)
  20200813.083  11.85C  (Gary Poyner)
  20200813.108  11.83C  (Gary Poyner)

In ATEL #13941, Fujii et al. reported the detection of
molecular absorption bands of C2 and CN on Aug. 12.

   It seems that the appearance of molecular absorption bands
may be a signature of the start of dust formation.