[vsnet-newvar 1176] New Takamizawa variable (TmzV859)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV859)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV859).

TmzV859
= GSC3686.15 022525.81 +541103.0 (2000.0) 11.93 1
= USNO1425.03468151 022525.816 +541103.08 (2000.0) 11.9 99.9
= IRAS02219+5357 022157.5 +535726 (1950.0)
     F12=1.10  F25=0.52  F60=0.40L F100=1.10L
     VAR=16 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
= 022525.2 +541057 (2000.0) IRAS02219+5357 1.130 0.521 0.400L 1.076L 16%
= 22525.2 +541057 (2000.0) SSC02219+5357 1.130 0.521 0.400L 1.076L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.8-12.8p.
  (TmzV859 is a component of a close pair; GSC3686.555 star is present in
  the SSE direction).

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV859        19950127.424  123p  Tmz.VSOLJ
TmzV859        19960922.666  120p  Tmz.VSOLJ
TmzV859        19970613.728  119p  Tmz.VSOLJ
TmzV859        19980116.413  125p  Tmz.VSOLJ
TmzV859        19980629.701  128p  Tmz.VSOLJ
TmzV859        19991128.448  118p  Tmz.VSOLJ
TmzV859        20000902.678  124p  Tmz.VSOLJ
TmzV859        20011023.605  122p  Tmz.VSOLJ

Observer's code:
  Tmz: K.Takamizawa (Saku-machi,Nagano,Japan)
       SASS (Saku All Sky Survey)
       Inst.: 10cmR F4 twin patrol cameras and 25cm F2.8
       Baker-Schmidt camera T-Max400 120
       Comparison stars mag.:GSC

Relayed from Kesao Takamizawa <k-takamizawa@nifty.ne.jp>

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