[Message Prev][Message Next][Thread Prev][Thread Next][Message Index][Thread Index]

[vsnet-newvar 1131] New Takamizawa variable (TmzV820)

New Takamizawa variable (TmzV820)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV820).

TmzV820
= GSC5775.988 210513.00 -101801.8 (2000.0) 11.88 0
= USNO0750.20697889 210512.997 -101802.16 (2000.0) 10.8 12.8
= 2MASS 210513.008 -101802.16 (2000.0)  0.000  0.000  0.000
= IRAS21025-1030 210230.7 -103001 (1950.0)
     F12=2.09  F25=0.76  F60=0.40L F100=3.98L
     VAR=58 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
= 210512.3 -101804 (2000.0) FSC21025-1030 2.097 0.643 0.279L 2.824L
= 210512.9 -101800 (2000.0) IRAS21025-1030 2.115 0.739 0.400L 4.058L 58%
= 210512.9 -101800 (2000.0) SSC21025-1030 2.115 0.739 0.400L 4.058L
= 210513.0 -101802 (2000.0) 1078 1.12 TYC5775.988.1 plx=4.8(58.8) (0.08 0.18)
= 210512.9 -101801 (2000.0) 1087 1.03 TYC2-5775.988.1 (10.98 0.06) (12.19 0.13)

  Takamizawa's comment:

  The star may be a semiregular variable  with a range of 11.2-12.0p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV820        19940413.785  112p  Tmz.VSOLJ
TmzV820        19940512.748  118p  Tmz.VSOLJ
TmzV820        19940703.658  116p  Tmz.VSOLJ
TmzV820        19940803.581  117p  Tmz.VSOLJ
TmzV820        19940810.659  118p  Tmz.VSOLJ
TmzV820        19940930.532  119p  Tmz.VSOLJ
TmzV820        19941127.402  118p  Tmz.VSOLJ
TmzV820        19950311.825  115p  Tmz.VSOLJ
TmzV820        19950723.655  118p  Tmz.VSOLJ
TmzV820        19951020.441  118p  Tmz.VSOLJ
TmzV820        19960423.791  117p  Tmz.VSOLJ
TmzV820        19960815.567  116p  Tmz.VSOLJ
TmzV820        19961030.456  116p  Tmz.VSOLJ
TmzV820        19970706.678  117p  Tmz.VSOLJ
TmzV820        19971025.526  120p  Tmz.VSOLJ
TmzV820        19990708.663  119p  Tmz.VSOLJ
TmzV820        20011013.451  120p  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>

VSNET Home Page

Return to Daisaku Nogami

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