[vsnet-alert 14091] Re: outburst of X-ray source 1RXS J074112.2-094529

[Seiichi Yoshida]

Dear Sebastian Otero,

Hidetaka Sato re-measured his images. He commented that the B-band
photometry has a large error due to the large sky noise. So he
rejected his measurement of B-band.

Thank you for your pointing this problem.

P.S.
Here is the web page of this star:
  http://www.aerith.net/misao/data/misv.cgi?1446

Best regards,

> Dear Sebastian Otero,
> 
> Thank you for your comment.
> 
> I asked Hidetaka Sato on B-band magnitude. He commented that the B-V
> value seems strange. But the star actually looks brighter on the
> B-band images. So maybe the star is really bluish. Anyway, Sato-san
> will re-measure, or re-observe this star in the near future.
> 
> Well, the observation time was Jan. 9.104, 2012 (UT).
> 
> Best regards,
> 
> > > Hidetaka Sato observed multi-band photometry today and revealed this
> > > star is bluish.
> > > 
> > >  B: 14.02 +/- 0.04
> > >  V: 14.74 +/- 0.04
> > >  R: 14.55 +/- <0.01
> > >  I: 14.36 +/- <0.01
> > 
> > The B magnitude looks spurious, since a B-V of -0.72 is impossible...
> > B= 15.02 would be more consistent with the rest of the colors.
> > 
> > Cheers,
> > Sebastian
> > 
> > -------------------------
> > Sebastian Otero
> > VSX Team
> > American Association of Variable Star Observers
> 
> --
> Seiichi Yoshida
> comet at aerith.net
> http://www.aerith.net/

--
Seiichi Yoshida
comet at aerith.net
http://www.aerith.net/