[vsnet-obs 18748] New Takamizawa variable (TmzV138)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV138)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV138).

TmzV138
= GSC2898.2103 045552.99 +404613.2 (2000.0) 10.31 1
= GSC2898.2103 045553.04 +404613.3 (2000.0) 10.61 1
= USNO1275.04031475 045553.044 +404612.92 (2000.0) 11.0 13.0
= IRAS04523+4041 045223.1 +404128 (1950.0)
    F12=0.76  F25=0.25L F60=0.40L F100=1.44L
    VAR=-1 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
= 045551.9 +404612 (2000.0) IRAS04523+4041 0.729 0.254L 0.400L 1.440L -1%
= 045551.9 +404612 (2000.0) SSC04523+4041 0.729 0.254L 0.400L 1.440L

  Takamizawa's comment:

  The star may be a semiregular variable (SR) with a range of 10.3-11.5p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV138        940302.540  107p  Tmz.VSOLJ
TmzV138        941108.597  113p  Tmz.VSOLJ
TmzV138        941224.488  108p  Tmz.VSOLJ
TmzV138        950320.515  107p  Tmz.VSOLJ
TmzV138        950823.769  113p  Tmz.VSOLJ
TmzV138        951128.608  112p  Tmz.VSOLJ
TmzV138        960109.422  107p  Tmz.VSOLJ
TmzV138        960922.747  111p  Tmz.VSOLJ
TmzV138        961015.731  115p  Tmz.VSOLJ
TmzV138        961203.547  113p  Tmz.VSOLJ
TmzV138        970802.749  109p  Tmz.VSOLJ
TmzV138        971123.615  112p  Tmz.VSOLJ
TmzV138        980318.465  115p  Tmz.VSOLJ
TmzV138        980820.731  107p  Tmz.VSOLJ
TmzV138        981024.609  103p  Tmz.VSOLJ
TmzV138        981218.596  103p  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