Re: new version of HST proposal posted

From: Anthony Gonzalez (anthony@astro.ufl.edu)
Date: Fri Jan 26 2007 - 08:33:40 PST

  • Next message: hyee@astro.utoronto.ca: "Re: new version of HST proposal posted - COMMENTS"

    Agreed that this likely won't make a dramatic difference for G (z=1.26).
    I was thinking more about your comment that all the z>1.2 clusters end
    up in the low ngal range.

    > Hi Kyle,
    >
    > How strong is the decline? We could apply a simple correction.
    > But I don't think this would triple the Ngal of cluster G...
    >
    > Cheers,
    > Henk
    >
    > On Fri, Jan 26, 2007 at 08:19:16AM -0800, Kyle S Dawson wrote:
    > > It's a straight measurement, so you see a decline in ngal at high z, both because the galaxies are less evolved and
    > > because we are quickly losing z' flux. The number count I did is EXTREMELY preliminary, I wouldn't ever trust it for
    > > anything but demonstraation purposes.
    > >
    > >
    > > ----- Original Message -----
    > > From: Anthony Gonzalez <anthony@astro.ufl.edu>
    > > Date: Friday, January 26, 2007 6:48 am
    > > Subject: Re: new version of HST proposal posted
    > > To: Henk Hoekstra <hoekstra@uvic.ca>
    > > Cc: Marc Postman <marc.postman@gmail.com>, HSTclusterSN@lbl.gov, Tony Spadafora <ALSpadafora@lbl.gov>
    > >
    > > >
    > > > > By the way, n_gal is the number of early type galaxies in the ACS
    > > > > field (Kyle can correct me, as he measured it). I guess we need
    > > > > to define this in the figure caption.
    > > >
    > > > Is a correction applied to ngal for how far down the luminosity
    > > > functionthe data probe at different redshifts, or is this a
    > > > straight measurement
    > > > from the ACS data?
    > > >
    >
    > !DSPAM:45ba2ba7905742333110687!
    >



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