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[vsnet-obs 19118] New Takamizawa variable (TmzV212)

New Takamizawa variable (TmzV212)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV212).  This star is identical with  NSV 15831 (independent
discovery).

TmzV212
= GSC2369.278 035402.26 +363217.7 (2000.0) 12.29 6
= USNO1200.01833292 035402.262 +363217.68 (2000.0) 11.0 15.4
= IRAS03507+3623 035046.3 +362328 (1950.0)
    F12=25.11  F25=13.18  F60=2.75  F100=17.37L
    VAR= 3 LRS=24
    blue, 10micron (silicate) emission, strength=4
    VII: variable star with more evolved C-rich circumstellar shell
= 035359.6 +363219 (2000.0) TMSS+40072
= 035400.0 +363159 (2000.0) (M8III)(Buscombe) V=11.8 - -
= 035401.8 +363217 (2000.0) IRAS03507+3623 24.520 13.770 2.813 16.910L 3% 5(LRS)
= 035401.8 +363217 (2000.0) SSC03507+3623 24.520 13.770 2.813 16.910L
= 035401.9 +363215 (2000.0) FSC03507+3623 24.460 13.530 2.372 5.120L
= 035402.1 +363217 (2000.0) NSV15831 SR: 11.8 (0.4) V M8IIIe

  Takamizawa's comment:

  The star may be a semiregular variable  with  a renge of 12.1-12.6p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
NSV15831       940810.714  121p  Tmz.VSOLJ
NSV15831       940910.709  122p  Tmz.VSOLJ
NSV15831       941108.558  121p  Tmz.VSOLJ
NSV15831       941223.461  122p  Tmz.VSOLJ
NSV15831       950320.485  123p  Tmz.VSOLJ
NSV15831       950823.727  124p  Tmz.VSOLJ
NSV15831       951127.562  123p  Tmz.VSOLJ
NSV15831       960815.715  122p  Tmz.VSOLJ
NSV15831       961202.463  125p  Tmz.VSOLJ
NSV15831       961229.422  124p  Tmz.VSOLJ
NSV15831       970714.735  126p  Tmz.VSOLJ
NSV15831       970802.723  124p  Tmz.VSOLJ
NSV15831       971010.688  123p  Tmz.VSOLJ
NSV15831       971123.534  123p  Tmz.VSOLJ
NSV15831       981112.555  125p  Tmz.VSOLJ
NSV15831       990109.506  126p  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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