[vsnet-obs 23807] New Takamizawa variable (TmzV581)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV581)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV581).

TmzV581
= GSC4266.395 214443.71 +632132.9 (2000.0) 12.26 1 N
= GSC4266.395 214443.75 +632131.7 (2000.0) 12.44 6
= USNO1500.08425040 214443.636 +632131.89 (2000.0) 11.7 13.7 *
= IRAS21434+6307 214324.0 +630744 (1950.0)
    F12=0.76  F25=0.36  F60=0.40L F100=2.75L
    VAR= 1 LRS=-1
 possibly II: variable star with 'young' O-rich circumstellar shell
 or VII: variable star with more evolved C-rich circumstellar shell
 or VIa: non-variable star with relatively cold dust at large
      distance, may be carbon-rich
= 214443.6 +632134 (2000.0) IRAS21434+6307 0.726 0.347 0.400L 2.803L 1%
= 214443.6 +632134 (2000.0) SSC21434+6307 0.726 0.347 0.400L 2.803L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.0-13.2p.

object         YYMMDD(UT)   mag  code
TmzV581        970827.540  123p  Tmz.VSOLJ
TmzV581        971218.437  122p  Tmz.VSOLJ
TmzV581        980823.563  125p  Tmz.VSOLJ
TmzV581        980916.530  132p  Tmz.VSOLJ
TmzV581        981107.440  128p  Tmz.VSOLJ
TmzV581        990709.574  120p  Tmz.VSOLJ
TmzV581        990807.594  128p  Tmz.VSOLJ

Observer's code:
  Tmz: K.Takamizawa (Saku-machi,Nagano,Japan)
       Inst.: 10cmR F4 twin patrol cameras  T-Max400 120
       Comparison stars mag.:GSC

Relayed from Kesao Takamizawa <GHA07243@nifty.ne.jp>

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