[vsnet-campaign-dn 2827] Re: V601 Sco: potential identification problem

[Hitoshi YAMAOKA <yamaoka@rc.kyushu-u.ac.jp>]

Re: V601 Sco: potential identification problem

In [vsnet-outburst 4489]  Kato-san commented: 
>   There is a very red star just west to the real V601 Sco.  It is
> likely this star has been visually detected.

and in [vsnet-outburst 4497] Kato-san commented: 
>    It is possible that Rod actually observed the "true" brightening
> of V601 Sco.  The identification on Downes CV atlas comes from Vogt
> and Bateson, who simply selected a "blue" object near the originally
> reported position. It is possible that the true V601 Sco is a red
> variable, which may be now rising.

  I have examined DSS images in this region, and noticed that the star
6" WNW of the suggested V601 Sco in Downes CV atlas, i.e. the very red
star mentioned above, seems to be indeed a variable.  

  There are 2 images in DSS 1 (SERC quick-V) and 4 images in DSS 2
(AAO SES and AAO SR, all are R images).  The star in DSS 1 images show
a significant change in brightness: 

1988 Apr. 15   V ~ 15.5
1988 Apr. 22   V ~ 14.4

On the other hand, in DSS 2 R images, it does not show such a
significant change; 

1991 Aug. 06   R ~ 12.8
1993 Apr. 20   R ~ 12.8
1997 Apr. 02   R ~ 13.0
1997 Apr. 30   R ~ 13.5

Sincerely,
Hitoshi Yamaoka

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