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[vsnet-obs 21954] New Takamizawa variable (TmzV479)

New Takamizawa variable (TmzV479)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV479).  The object is identical with the carbon-star suspected
variable NSV17675.  The optical variability has been confirmed.

TmzV479
= GSC6566.1836 075733.87 -282532.6 (2000.0) 11.38 6
= USNO0600.04881199 075733.844 -282533.00 (2000.0) 10.1 13.0
= IRAS07555-2817 075531.7 -281724 (1950.0)
    F12=1.10  F25=0.30  F60=0.40L F100=10.00L
    VAR= 4 LRS=-1
 possibly I: oxygen-rich non-variable star without circumstellar shell
 or VIa: non-variable star with relatively cold dust at large
      distance, may be carbon-rich
= 075733.8 -282531 (2000.0) IRAS07555-2817 1.117 0.306 0.400L 10.110L 4%
= 075733.8 -282531 (2000.0) SSC07555-2817 1.117 0.306 0.400L 10.110L
= 075733.9 -282529 (2000.0) CS1967 - 10.5 8.9 -
= 075733.8 -282532 (2000.0) NSV17675 VAR: 5.10 5.16 K C
= 075730.0 -282459 (2000.0) C(Buscombe) V=10.5 - -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.8-12.2p.

object         YYMMDD(UT)   mag  code
NSV17675       941111.724  119p  Tmz.VSOLJ
NSV17675       951222.701  120p  Tmz.VSOLJ
NSV17675       961021.828  120p  Tmz.VSOLJ
NSV17675       970227.495  121p  Tmz.VSOLJ
NSV17675       971013.806  118p  Tmz.VSOLJ
NSV17675       971103.834  119p  Tmz.VSOLJ
NSV17675       971203.741  122p  Tmz.VSOLJ
NSV17675       971231.679  121p  Tmz.VSOLJ
NSV17675       980322.516  118p  Tmz.VSOLJ
NSV17675       990208.537  121p  Tmz.VSOLJ
NSV17675       990404.452  118p  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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