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[vsnet-obs 21778] New Takamizawa variable (TmzV449)

New Takamizawa variable (TmzV449)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV449).

TmzV449
= GSC7122.3936 081559.95 -312555.3 (2000.0) 12.70 6
= USNO0525.06628217 081559.956 -312555.16 (2000.0) 12.6 16.4
= IRAS08139-3116 081359.8 -311638 (1950.0)
    F12=0.52  F25=0.25  F60=0.40L F100=1.58L
    VAR= 0 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
= 081559.6 -312554 (2000.0) IRAS08139-3116 0.506 0.261 0.400L 1.609L 0%
= 081559.6 -312554 (2000.0) SSC08139-3116 0.506 0.261 0.400L 1.609L
= 081554.0 -312459 (2000.0) M5(III)(Buscombe) - - -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.7-13.3p.

object         YYMMDD(UT)   mag  code
TmzV449        941111.724  131p  Tmz.VSOLJ
TmzV449        950220.528  130p  Tmz.VSOLJ
TmzV449        951118.735  130p  Tmz.VSOLJ
TmzV449        951222.701  129p  Tmz.VSOLJ
TmzV449        960211.540  128p  Tmz.VSOLJ
TmzV449        961021.828  132p  Tmz.VSOLJ
TmzV449        970227.495  133p  Tmz.VSOLJ
TmzV449        971013.806  130p  Tmz.VSOLJ
TmzV449        971103.834  131p  Tmz.VSOLJ
TmzV449        971203.741  129p  Tmz.VSOLJ
TmzV449        971231.679  133p  Tmz.VSOLJ
TmzV449        980322.516  132p  Tmz.VSOLJ
TmzV449        981115.785  130p  Tmz.VSOLJ
TmzV449        990208.537  129p  Tmz.VSOLJ
TmzV449        990404.452  127p  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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