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[vsnet-obs 18744] New Takamizawa variable (TmzV137)

New Takamizawa variable (TmzV137)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV137).

TmzV137
= GSC2399.1065 045556.76 +364825.9 (2000.0) 12.71 1
= USNO1200.02651287 045556.762 +364825.72 (2000.0) 11.7 18.6
= 045556.7 +364826 (2000.0) CS815 - - 10.7 -
= 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 12.8-13.9p.
There is a another new variable star (TmzV136), and is located
about 20" west of this new variable star (TmzV137).

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV137        940302.540  136p  Tmz.VSOLJ
TmzV137        940810.775  134p  Tmz.VSOLJ
TmzV137        941108.597  137p  Tmz.VSOLJ
TmzV137        941224.488  134p  Tmz.VSOLJ
TmzV137        950320.515  129p  Tmz.VSOLJ
TmzV137        950823.769  128p  Tmz.VSOLJ
TmzV137        951128.608  133p  Tmz.VSOLJ
TmzV137        960109.422  133p  Tmz.VSOLJ
TmzV137        960922.747  135p  Tmz.VSOLJ
TmzV137        961015.731  127p  Tmz.VSOLJ
TmzV137        961203.547  138p  Tmz.VSOLJ
TmzV137        970802.749  135p  Tmz.VSOLJ
TmzV137        971123.615  132p  Tmz.VSOLJ
TmzV137        980318.465  129p  Tmz.VSOLJ
TmzV137        980820.731  139p  Tmz.VSOLJ
TmzV137        981024.609  133p  Tmz.VSOLJ
TmzV137        981218.596  130p  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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