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[vsnet-obs 21776] New Takamizawa variable (TmzV447)

New Takamizawa variable (TmzV447)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV447).

TmzV447
= GSC7143.11 083247.24 -341428.5 (2000.0) 12.26 6
= USNO0525.07616456 083247.244 -341428.55 (2000.0) 10.3 12.7 *
= IRAS08308-3404 083049.0 -340408 (1950.0)
    F12=1.10  F25=0.40  F60=0.40L F100=1.44L
    VAR=42 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
= 083246.9 -341424 (2000.0) IRAS08308-3404 1.134 0.399 0.400L 1.502L 42%
= 083246.9 -341424 (2000.0) SSC08308-3404 1.134 0.399 0.400L 1.502L
= 083247.9 -341359 (2000.0) M6(III)(Buscombe) - - -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.7-12.5p.

object         YYMMDD(UT)   mag  code
TmzV447        950220.528  117p  Tmz.VSOLJ
TmzV447        951118.735  118p  Tmz.VSOLJ
TmzV447        951222.701  125p  Tmz.VSOLJ
TmzV447        960211.540  120p  Tmz.VSOLJ
TmzV447        961021.828  122p  Tmz.VSOLJ
TmzV447        971103.834  120p  Tmz.VSOLJ
TmzV447        971203.741  117p  Tmz.VSOLJ
TmzV447        971231.679  117p  Tmz.VSOLJ
TmzV447        980322.516  125p  Tmz.VSOLJ
TmzV447        981115.785  121p  Tmz.VSOLJ
TmzV447        990208.537  119p  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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