[vsnet-alert 13134] Re: MisV1444 - possible new peculiar variable?

[Akira Arai]

We obtained optical spectra of MisV1444 on April 10 (tonight) using
1.3m Araki-telescope at Koyama Astronomical Observatory.
Spectra of the object show TiO band features clearly on a red continuum
light.  Our results suggest that MisV1444 might be a Mira variable star.

Our preliminary spectra is shown in our blog:
http://www.cc.kyoto-su.ac.jp/~kao/blog/index.php/view/82

Regards,
Akira Arai,
Koyama Astron. Obs.,
Kyoto Sangyo Univ.


2011年4月9日18:43 Seiichi Yoshida <comet at aerith.net>:
> Dear colleagues,
>
> I discovered an interesting new variable star from Youichirou
> Nakashima's images, in the course of the MISAO Project.
>
> It may be a new peculiar variable, I guess. Observations and comments
> are welcome!
>
> MisV1444
>  R.A.   18h46m37s.47
>  Decl.  +22o48'22".0  (2000.0)
>  Mag.   13.0-<16.0C
>  Type   ?
>
>  http://www.aerith.net/misao/data/MisV/MisV1444.gif
>
>  Discoverers:
>    Seiichi Yoshida, Yokohama City, Kanagawa, Japan
>    Youichirou Nakashima, Setouchi City, Okayama, Japan
>
> It also looks bright on 2MASS images. But I guess it is not an
> ordinary red variable.
>
> On the Digitized Sky Survey 2 (POSS2/UKSTU) images, it is not so
> bright on infrared plate. It looks brighter on the blue plate than
> infrared plate.
>
> Here are the past observations in the course of the MISAO Project.
>
> MisV1444 20010607.63642 152C Mis
> MisV1444 20010704.55036 <159C Mis
> MisV1444 20010704.55221 <160C Mis
> MisV1444 20010812.51234 <157C Mis
> MisV1444 20010812.51419 <158C Mis
> MisV1444 20080531.61119 <149C Mis
> MisV1444 20080531.61323 <151C Mis
> MisV1444 20080531.61527 <149C Mis
> MisV1444 20080707.51243 <153C Mis
> MisV1444 20080707.51446 <155C Mis
> MisV1444 20080707.51649 <151C Mis
> MisV1444 20080707.51853 <151C Mis
> MisV1444 20080727.60396 155C Mis
> MisV1444 20080727.60600 156C Mis
> MisV1444 20080727.60803 154C Mis
> MisV1444 20080810.51223 151C Mis
> MisV1444 20080810.51427 150C Mis
> MisV1444 20080810.51631 150C Mis
> MisV1444 20110405.70698 132C Mis
> MisV1444 20110405.70832 130C Mis
> MisV1444 20110405.70965 131C Mis
> MisV1444 20110405.71100 132C Mis
>
> 2001 June  7, 2001 July  4, 2001 Aug. 12
>  Nobuo Ohkura
>  500-mm camera lens + SBIG ST-8
>
> 2008 May  31
>  Youichirou Nakashima
>  0.10-m f/6.4 refractor + f/4.8 reducer lens + SBIG ST-8
>
> 2008 July  7
>  Youichirou Nakashima
>  0.10-m f/6.4 refractor + f/4.8 reducer lens + SBIG ST-8
>
> 2008 July 27, 2008 Aug. 10
>  Youichirou Nakashima
>  7.6-cm f/6.6 refractor + SBIG ST-8
>
> 2011 Apr.  5
>  Youichirou Nakashima
>  Canon 500-mm f/4.5 camera lens + SBIG ST-8
>
> Best regards,
>
> --
> Seiichi Yoshida
> comet at aerith.net
> http://www.aerith.net/
>



-- 
-------------------------------------------------
Akira Arai (PD)
Koyama Astronomical Observatory,
Kyoto Sangyo University
mail : arai6a at cc.kyoto-su.ac.jp
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