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[vsolj-alert 180] Possible fading of R CrB



Possible fading of R CrB

 R CrBが減光開始か?

 秋田市の佐藤実さんの観測によれば、かんむり座R型の代表星 R CrB がやや減光
 気味であることが指摘されています。この変化は他の観測者によっても確認された
 模様です。もしこれが本格的な減光につながれば、1995年10月に始まった減光以来
 の現象となります。

   Minoru Sato (VSOLJ) has pointed out the slight fading of R CrB, which
seems to have been confirmed by other observers.  Although the change is
small, observers are requested to monitor this star intensively in order
to see whether this change leads to a major decline.

  YYMMDD(UT)   mag  observer
  980731.899    61  (L. Kiss)
  980801.973    61  (G. Poyner)
  980802.528    59  (N. Makiguchi)
  980803.617    57  (M. Hiraga)
  980803.908    60  (G. Poyner)
  980804.892    60  (J. S. Day)
  980804.930    60  (G. Poyner)
  980805.900    59  (G. Comello)
  980805.912    61  (G. Poyner)
  980805.915    59  (T. Lange)
  980806.905    61  (A. Diepvens)
  980806.953    61  (G. Poyner)
  980808.890    60  (J. S. Day)
  980808.907    60  (E. Broens)
  980808.910    61  (G. Poyner)
  980809.465    60  (M. Sato)
  980809.901    61  (G. Poyner)
  980810.528    59  (M. Hiraga)
  980811.526    62  (S. Takahashi)
  980811.890    61  (G. Poyner)
  980812.915    60  (M. Biesmans)
  980812.916    61  (G. Poyner)
  980813.869    59  (R. J. Bouma)
  980813.910    59  (G. Comello)
  980814.460    60  (M. Sato)
  980814.830    60  (E. Schweitzer)
  980815.903    61  (E. Broens)
  980815.906    62  (G. Poyner)
  980815.935    60  (A. Diepvens)
  980816.528    60  (N. Makiguchi)
  980816.876    60  (E. Broens)
  980816.912    61  (G. Poyner)
  980816.926    60  (A. Diepvens)
  980816.976    61  (T. Lange)
  980817.830    60  (E. Schweitzer)
  980817.881    61  (G. Poyner)
  980818.451    62  (M. Sato)
  980818.467    62  (M. Sato)
  980818.510    63  (M. Sato)
  980818.891    61  (G. Poyner)
  980818.912    60  (R. J. Bouma)
  980819.451    62  (S. Takahashi)
  980821.465    63: (M. Sato)
  980821.473    62  (S. Takahashi)
  980821.883    64  (G. Poyner)
  980822.099    62  (J. McKenna)
  980822.476    63  (M. Sato)

Regards,
Taichi Kato

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