[vsnet-newvar 1143] New Takamizawa variable (TmzV832)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV832)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV832).

TmzV832
= GSC7456.1417 204017.57 -302530.6 (2000.0) 11.92 0 N
= USNO0525.35277376 204017.557 -302530.72 (2000.0)  9.9 13.1
= 2MASS 204017.568 -302530.72 (2000.0)  0.000  0.000  0.000
= IRAS20372-3036 203714.0 -303609 (1950.0)
     F12=1.32  F25=0.58  F60=0.40L F100=3.02L
     VAR= 6 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
= 204016.8 -302532 (2000.0) FSC20372-3036 1.402 0.481 0.205L 1.734L
= 204017.9 -302529 (2000.0) IRAS20372-3036 1.372 0.558 0.400L 3.132L 6%
= 204017.9 -302529 (2000.0) SSC20372-3036 1.372 0.558 0.400L 3.132L
= 204017.5 -302530 (2000.0) 1164 0.93 TYC2-7456.1417.1 (11.74 0.18) (12.83 0.33)

  Takamizawa's comment:

  The star may be a semiregular variable  with a range of 11.4-12.3p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV832        19940803.592  116p  Tmz.VSOLJ
TmzV832        19940810.644  114p  Tmz.VSOLJ
TmzV832        19940930.544  115p  Tmz.VSOLJ
TmzV832        19941127.394  120p  Tmz.VSOLJ
TmzV832        19950723.663  115p  Tmz.VSOLJ
TmzV832        19950921.518  114p  Tmz.VSOLJ
TmzV832        19951020.433  115p  Tmz.VSOLJ
TmzV832        19960815.559  123p  Tmz.VSOLJ
TmzV832        19970706.694  121p  Tmz.VSOLJ
TmzV832        20011013.435  118p  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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