[vsnet-id 459] Re: MisV1089 ID

[Taichi Kato <tkato>]

Re: [vsnet-id 458] Re: MisV1089 ID

> However, I also found that there are many (possible) correct
> identifications with very faint 2MASS objects. Here is the list.
> 
> How do you think of them? The first one, MisV0002, is an ecliptic
> variable star. So it is natual that the 2MASS object is faint. But how
> about the rest?
> 
> Most of the MisV stars have been regarded as red variable stars. 
> However, the following stars can be different type, cannot they?
> Are there some stars worth being motitored?

   I have examined the case of MisV0035.  There is a much brighter 2MASS
star, but is slightly offset from the original MISAO position.

   The 2MASS source is easily identified with a MSX5C source.

   From the color of the faint candidate listed, J=13.1 and J-K=0.4 look
like a normal faint star, which would not easily explain the large
variability of a bright unfiltered CCD source.  There being a good bright
2MASS/MSX5C candidate, it may have been that the MISAO positions can
sometimes have larger errors than were supposed.  Crowding may have played
an important role; the "nearest" 2MASS counterpart can be sometimes wrong,
and astrometry from optical CCD images can be more contaminated by dense
field stars than in IR images on which red variable are usually outstanding.

2MASS 175644.322 -304940.54 (2000.0)  9.839  8.720  7.983
= 175644.1 -304941 (2000.0) MSX5C_G359.6035-03.0375

175644.2 -304946 (2000.0) MisV0035 14.3 17.0C M? - -

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