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[vsnet-obs 18743] New Takamizawa variable (TmzV136)

New Takamizawa variable (TmzV136)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV136).

TmzV136
= GSC2399.1075 045554.67 +364824.8 (2000.0) 12.53 1
= USNO1200.02650700 045554.680 +364824.61 (2000.0) 12.1 14.4
= IRAS04525+3643 045232.7 +364338 (1950.0)
    F12=1.20  F25=0.36  F60=0.40L F100=8.31L
    VAR= 3 LRS=-1
 possibly I: oxygen-rich non-variable star without 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
= 045554.2 +364821 (2000.0) IRAS04525+3643 1.179 0.383 0.400L 8.139L 3%
= 045554.2 +364821 (2000.0) SSC04525+3643 1.179 0.383 0.400L 8.139L
  (IRAS sources are likely to correspond to a combination of TmzV136 and
TmzV137).

  Takamizawa's comment:

The star may be a semiregular variable (SR) with a range of 12.3-12.8p.
There is a another new variable star (TmzV137 = CS815), and is located
about 20" east of this new variable star (TmzV136).

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV136        940302.540  127p  Tmz.VSOLJ
TmzV136        940810.775  125p  Tmz.VSOLJ
TmzV136        941108.597  127p  Tmz.VSOLJ
TmzV136        941224.488  126p  Tmz.VSOLJ
TmzV136        950320.515  127p  Tmz.VSOLJ
TmzV136        950823.769  128p  Tmz.VSOLJ
TmzV136        951128.608  126p  Tmz.VSOLJ
TmzV136        960109.422  127p  Tmz.VSOLJ
TmzV136        960922.747  125p  Tmz.VSOLJ
TmzV136        961015.731  125p  Tmz.VSOLJ
TmzV136        961203.547  127p  Tmz.VSOLJ
TmzV136        970802.749  127p  Tmz.VSOLJ
TmzV136        971123.615  126p  Tmz.VSOLJ
TmzV136        980318.465  126p  Tmz.VSOLJ
TmzV136        980820.731  123p  Tmz.VSOLJ
TmzV136        981024.609  127p  Tmz.VSOLJ
TmzV136        981218.596  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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