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[vsnet-obs 18368] New Takamizawa variable (TmzV111)

New Takamizawa variable (TmzV111)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV111).

TmzV111
= GSC6484.290 053245.78 -280047.9 (2000.0) 14.40 0
= GSC6484.290 053245.81 -280047.0 (2000.0) 14.35 0
= GSC6484.290 053245.90 -280047.5 (2000.0) 14.25 0
= USNO0600.01067188 053245.822 -280047.40 (2000.0) 11.9 13.2
= IRAS05307-2802 053047.3 -280250 (1950.0)
    F12=0.58  F25=0.25L F60=0.40L F100=1.00L
    VAR=-1 LRS=-1
 possibly I: oxygen-rich non-variable star without circumstellar shell
 or 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
= 053245.6 -280046 (2000.0) IRAS05307-2802 0.561 0.250L 0.400L 1.000L -1%
= 053245.6 -280046 (2000.0) SSC05307-2802 0.561 0.250L 0.400L 1.000L
= 053245.9 -280049 (2000.0) FSC05307-2802 0.523 0.194 0.108L 0.627L
= 053248.4 -275857 (2000.0) WSV19

  Takamizawa's comment:

  The star may be a Mira-type classification with a range of 11.9-<15.0p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV111        941108.667  <150p  Tmz.VSOLJ
TmzV111        950203.447  134p  Tmz.VSOLJ
TmzV111        951128.669  119p  Tmz.VSOLJ
TmzV111        961203.594  <147p  Tmz.VSOLJ
TmzV111        970928.724  <143p  Tmz.VSOLJ
TmzV111        971109.710  145p  Tmz.VSOLJ
TmzV111        980125.508  121p  Tmz.VSOLJ
TmzV111        981212.598  133p  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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