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[vsnet-obs 20001] New Takamizawa variable (TmzV314)

New Takamizawa variable (TmzV314)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV314).

TmzV314
USNO0675.05173548 075110.194 -175720.49 (2000.0) 11.7 15.1
IRAS07489-1749 074854.8 -174934 (1950.0)
    F12=1.20  F25=0.58  F60=0.40L F100=1.00 
    VAR=10 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
075109.3 -175716 (2000.0) IRAS07489-1749 1.177 0.599 0.400L 1.040 10%
075109.3 -175716 (2000.0) SSC07489-1749 1.177 0.599 0.400L 1.040
075106.0 -175559 (2000.0) M8(III)(Buscombe) - - -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.5-14.2p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV314        940314.505  134p  Tmz.VSOLJ
TmzV314        941111.738  138p  Tmz.VSOLJ
TmzV314        950203.546  137p  Tmz.VSOLJ
TmzV314        950927.799  125p  Tmz.VSOLJ
TmzV314        951118.744  135p  Tmz.VSOLJ
TmzV314        951222.685  131p  Tmz.VSOLJ
TmzV314        960211.515  138p  Tmz.VSOLJ
TmzV314        961021.776  139p  Tmz.VSOLJ
TmzV314        961206.707  136p  Tmz.VSOLJ
TmzV314        970103.622  127p  Tmz.VSOLJ
TmzV314        970227.485  140p  Tmz.VSOLJ
TmzV314        971013.791  139p  Tmz.VSOLJ
TmzV314        971103.802  140p  Tmz.VSOLJ
TmzV314        971204.703  138p  Tmz.VSOLJ
TmzV314        971224.641  138p  Tmz.VSOLJ
TmzV314        980121.556  130p  Tmz.VSOLJ
TmzV314        980217.505  131p  Tmz.VSOLJ
TmzV314        980325.461  142p  Tmz.VSOLJ
TmzV314        981115.744  137p  Tmz.VSOLJ
TmzV314        981212.628  142p  Tmz.VSOLJ
TmzV314        990208.557  130p  Tmz.VSOLJ
TmzV314        990404.438  129p  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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