Re: new version of HST proposal posted

From: Piero Rosati (prosati@eso.org)
Date: Fri Jan 26 2007 - 08:27:45 PST

  • Next message: Anthony Gonzalez: "Re: new version of HST proposal posted"

    Ok, so this should be said in the caption, so the reader won't start
    wondering about the scatter or use it in a negative way. We should
    give the straight definition of n_gal and emphasize the demonstration
    purpose of this plot. Again, more meaningful relations will come
    using Xray/SZ physical parameters.

    On Jan 26, 2007, at 4:58 PM, Henk Hoekstra wrote:

    > Dear Anthony,
    >
    > I don't. I did a crude measurement of n_gal myself, in a fixed
    > aperture and tried to incorporate the change in apparent
    > magnitude. Not sure if Kyle did the same. In practice, however, I
    > found doing this in more detail makes relatively little difference at
    > this stage. Keep in mind that the plot is very preliminary. I must
    > admit I was surprised to see how well it worked out!
    >
    > Cheers,
    > Henk
    >
    > On Fri, Jan 26, 2007 at 09:47:19AM -0500, Anthony Gonzalez wrote:
    >>
    >>> 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
    >> function
    >> the data probe at different redshifts, or is this a straight
    >> measurement
    >> from the ACS data?



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