From: Rachel Gibbons (rachel.a.gibbons@vanderbilt.edu)
Date: Fri Dec 03 2004 - 08:51:12 PST
Tomas and Ariel,
z~1.8, wow!
As I note on the page, I can quote statistical errors. In fact,
I did make estimates of the NIC2 errors, which you can find further
down the page, but I can easily transfer those numbers to the top
table. The ACS errors I didn't bother calculating, but thought
you might want to see them eventually.
Rachel
On Fri, Dec 03, 2004 at 05:44:52PM +0100, Ariel Goobar wrote:
> Hi All,
>
> Tomas had a look at the host colors that Rachel posted. We couldn't
> find error bars on all those colors so he experimented a bit with
> errors in the fluxes ranging from 0.02 to 0.1 mag. He did this for both
> apertures quoted and the two knots. So, both knots seem
> definitely to have the same redshift. Depending on
> what the errors actually are, the best fit photo-z's
> come out between 1.69 and 1.86. For all choices, the
> actual distributions around the best fit values are
> nicely gaussian and have a sigma consitent with the range
> above. So, I think the final number will be something
> around z~1.8 +- 0.1. What remains is work out what the
> error on the measured colors are, but looking at Tomas'
> plots, I don't think his analysis would yield a
> different answer for any reasonable values of the errors.
>
> Cheers,
> Ariel
>
> On Thu, 2 Dec 2004, Rachel Gibbons wrote:
>
> > Ariel,
> >
> > If you go to the candidate page and click on "MingusHost"
> > you'll find magnitudes in the first table you see.
> >
> > Ciao,
> >
> > Rachel
> >
> >
>
> --
> ___________________________________________________________________
> Ariel Goobar (www.physto.se/~ariel)
> Department of Physics, Stockholm University
> AlbaNova University Center, SE-106 91 Stockholm, SWEDEN
> tel: +46 8 55378659 fax: +46 8 55378601
>
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