[vsnet-obs 20662] New Takamizawa variable (TmzV369)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV369)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV369).

TmzV369
= GSC7119.831 075205.37 -300505.3 (2000.0) 11.19 6
= GSC7119.831 075205.37 -300505.6 (2000.0) 12.98 0
= USNO0525.05386845 075205.390 -300505.80 (2000.0)  9.8 12.2
= IRAS07500-2957 075005.3 -295716 (1950.0)
    F12=1.32  F25=0.44  F60=0.40L F100=2.75L
    VAR=11 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
= 075204.8 -300502 (2000.0) IRAS07500-2957 1.307 0.427 0.400L 2.664L 11%
= 075204.8 -300502 (2000.0) SSC07500-2957 1.307 0.427 0.400L 2.664L
= 075200.0 -300359 (2000.0) M6(III)(Buscombe) - - -

  Takamizawa's comment:

  The star may be an irregular variable with a range of 11.5-12.1p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV369        941111.731  118p  Tmz.VSOLJ
TmzV369        941203.698  120p  Tmz.VSOLJ
TmzV369        950203.535  119p  Tmz.VSOLJ
TmzV369        951222.694  117p  Tmz.VSOLJ
TmzV369        961021.768  116p  Tmz.VSOLJ
TmzV369        970103.631  119p  Tmz.VSOLJ
TmzV369        971013.798  119p  Tmz.VSOLJ
TmzV369        971103.810  120p  Tmz.VSOLJ
TmzV369        971204.695  117p  Tmz.VSOLJ
TmzV369        971224.633  119p  Tmz.VSOLJ
TmzV369        980121.549  119p  Tmz.VSOLJ
TmzV369        980217.497  118p  Tmz.VSOLJ
TmzV369        980325.454  121p  Tmz.VSOLJ
TmzV369        981115.737  115p  Tmz.VSOLJ
TmzV369        990404.438  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>

VSNET Home Page

Return to Daisaku Nogami

---

vsnet-adm@kusastro.kyoto-u.ac.jp