[vsnet-id 482] Re: MisV and 2MASS identifications

[Seiichi Yoshida <comet@aerith.net>]

Dear colleagues,

> Subject: [vsnet-id 472] MisV and 2MASS identifications

> 3) Faint red stars (J-K > 1.1, J > 10)
> MisV0603  0.2"  2MASS 180105.946 -115941.89 (2000.0) 13.765 12.909 12.619  1.146
> MisV0257  0.9"  2MASS 200312.473 +322157.00 (2000.0) 13.801 12.427 12.081  1.720
> 
> All these stars are very faint variable stars. So I think the
> identifications are correct. The faint 2MASS magnitude seems to
> reflect the faint unfiltered CCD magnitude.

I found there are better 2MASS objects near by them. They are not
faint.

MisV0257  7.3"  2MASS 200312.519 +322150.46 (2000.0)  8.858  7.456  6.677 2.181
MisV0603  5.3"  2MASS 180105.598 -115943.08 (2000.0) 10.909  9.900  9.293 1.616

> 1) Faint blue stars (J-K < 1.0, J > 10)

>   MisV1061 (12.0-12.7 mag) = GSC 2180-00207 (12.73 mag)
>   MisV0814 (13.3-14.5 mag) = GSC 2412-00713 (14.55 mag)
>   MisV1105 (13.4-14.2 mag) = GSC 3159-01247 (13.93 mag)
>   MisV0665 (13.0-14.2 mag) = GSC 6292-01507 (12.89 mag)
>   MisV0779 (12.8-14.2 mag) = GSC 3168-02233 (12.87 mag)

> 2) Bright blue stars (J-K < 1.0, J < 10)
> 
> MisV1024  1.6"  2MASS 200135.611 +335902.75 (2000.0)  7.312  5.861  6.583  0.729

I found one more blue star.

MisV0898  7.7"  2MASS 180021.488 -304831.78 (2000.0) 10.764 10.172 10.025 0.739

MisV0898 is at R.A. 18h00m21s.24, Decl. -30o48'24".8 (2000.0) with a
range of 11.6-14.2C mag. If the identification is correct, the J-K
color implies it is not a red variable. If not correct, the star is
not detected in infrared, which also implies it is not a red variable. 
However, it is not recorded in any star catalogs despite of the bright
peak magnitude. MisV0898 is evidently found on the DSS R and Bj
images.

Best regards,

--
Seiichi Yoshida
comet@aerith.net
http://vsnet.aerith.net/

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