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[vsnet-newvar 371] New Takamizawa variable (TmzV740)

New Takamizawa variable (TmzV740)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV740).

TmzV740
= GSC7902.1896 183821.40 -385355.5 (2000.0) 12.36 6
= USNO0450.35249266 183821.371 -385355.52 (2000.0) 11.1 13.6
= IRAS18349-3856 183454.4 -385635 (1950.0)
    F12=0.83  F25=0.36  F60=0.40L F100=1.00L
    VAR= 3 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
= 183821.3 -385355 (2000.0) IRAS18349-3856 0.865 0.365 0.400L 1.000L 3%
= 183821.3 -385355 (2000.0) SSC18349-3856 0.865 0.365 0.400L 1.000L
= 183821.6 -385356 (2000.0) FSC18349-3856 0.833 0.357 0.286L 1.421L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.1-12.8p.

object         YYYYMMDD(UT)   mag  code
TmzV740        19940712.601  123p  Tmz.VSOLJ
TmzV740        19940810.523  124p  Tmz.VSOLJ
TmzV740        19950522.685  123p  Tmz.VSOLJ
TmzV740        19960619.642  121p  Tmz.VSOLJ
TmzV740        19960903.472  128p  Tmz.VSOLJ
TmzV740        19970606.684  124p  Tmz.VSOLJ
TmzV740        19970706.594  123p  Tmz.VSOLJ
TmzV740        19970822.470  121p  Tmz.VSOLJ
TmzV740        19970919.377  122p  Tmz.VSOLJ
TmzV740        19980629.613  122p  Tmz.VSOLJ
TmzV740        19980912.436  123p  Tmz.VSOLJ
TmzV740        19990414.788  124p  Tmz.VSOLJ
TmzV740        19990511.719  123p  Tmz.VSOLJ
TmzV740        19990609.681  126p  Tmz.VSOLJ
TmzV740        19990614.616  126p  Tmz.VSOLJ
TmzV740        19990706.622  124p  Tmz.VSOLJ
TmzV740        19990803.528  <121p  Tmz.VSOLJ
TmzV740        20000406.803  128p  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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