Re: new version of HST proposal posted

From: Henk Hoekstra (hoekstra@uvic.ca)
Date: Fri Jan 26 2007 - 08:26:05 PST

  • Next message: Piero Rosati: "Re: new version of HST proposal posted"

    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?
    > >

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