Re: color plot

From: Marc Postman (postman@stsci.edu)
Date: Tue Jan 17 2006 - 07:57:27 PST

  • Next message: Marc Postman: "Re: color plot"

    Here is a better version with the counts normalized to the surface
    density.




    On Jan 17, 2006, at 10:14 AM, Marc Postman wrote:

    > ere is a revised plot that combines both the color and spectroscopic
    > info. This plot shows the color offsets (relative to the mean color of
    > the red sequence) for All ellipticals, for those ellipticals with
    > redshifts < 1, for those ellipticals with redshifts > 1 but which are
    > not cluster members, and for those ellipticals with redshifts > 1 that
    > are cluster members. All but one of the z<1 ellipticals lie in the
    > color offset range consistent with the blue ellipticals, demonstrating
    > that the counts to the left of the red sequence peak are almost all
    > foreground galaxies at z < 1. All the cluster ellipticals lie under
    > the peak centered on zero offset from the red sequence. The dashed
    > line shows the mean number of ellipticals per bin in the region where
    > the foreground (blue) ellipticals live - one can (I think anyway)
    > easily see in this plot that the overdensity in color and redshift
    > space are similar.
    >
    > Maybe this is the plot we should use in the proposal.
    >
    -----------------------------------------------------------------
    Marc Postman Email: postman@stsci.edu
    STScI - CMO Phone: +1-410-338-4340
    3700 San Martin Drive Fax: +1-410-338-4424
    Baltimore, MD 21218 U.S.A. http://www.stsci.edu/~postman



    This archive was generated by hypermail 2.1.4 : Tue Jan 17 2006 - 07:59:22 PST