[vsnet-newvar 1151] New Takamizawa variable (TmzV839)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV839)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV839).

TmzV839
= GSC7979.793 212351.20 -385258.4 (2000.0) 11.41 0
= USNO0450.39839821 212351.168 -385258.60 (2000.0)  9.0 11.5
= IRAS21207-3905 212043.2 -390552 (1950.0)
     F12=12.02  F25=5.25  F60=0.83  F100=4.78L
     VAR=25 LRS=14
     blue featureless, spec.index=2.0
     II: variable star with 'young' O-rich circumstellar shell
= 212351.2 -385301 (2000.0) CPD-39.8936 10.4
= 212351.2 -385257 (2000.0) IRAS21207-3905 11.810 5.493 0.798 4.612L 25% 2(LRS)
= 212351.2 -385257 (2000.0) SSC21207-3905 11.810 5.493 0.798 4.612L
= 212351.2 -385259 (2000.0) FSC21207-3905 11.780 5.219 0.701 1.386L
= 212351.2 -385258 (2000.0) 1026 1.45 TYC7979.793.1 plx=-23.2(40.0) (0.07 0.22)
= 212351.1 -385257 (2000.0) 1015 1.33 TYC2-7979.793.1 (10.29 0.05) (11.85 0.12)
= 212349.9 -385301 (2000.0) CD-39.14236 9.5

  Takamizawa's comment:

  The star may be a semiregular variable  with a range of 9.5-10.5p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV839        19940810.671  100p  Tmz.VSOLJ
TmzV839        19950921.526   95p  Tmz.VSOLJ
TmzV839        19950921.529   95p  Tmz.VSOLJ
TmzV839        19960721.671  104p  Tmz.VSOLJ
TmzV839        19960815.601  104p  Tmz.VSOLJ
TmzV839        20011013.458  105p  Tmz.VSOLJ

Observer's code:
  Tmz: K.Takamizawa (Saku-machi,Nagano,Japan)
       SASS (Saku All Sky Survey)
       Inst.: 10cmR F4 twin patrol cameras and 25cm F2.8
       Baker-Schmidt camera T-Max400 120
       Comparison stars mag.:GSC

Relayed from Kesao Takamizawa <k-takamizawa@nifty.ne.jp>

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