Re: color plot

From: Saul Perlmutter (saul@lbl.gov)
Date: Fri Jan 13 2006 - 22:59:15 PST

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

    ...I'll be curious to hear what other people think, but I suspect that
    the previous figure you sent (with delta z/1+z on the x-axis) makes the
    case more strongly. (Actually, why do I get the impression from this
    plot that there are comparable number of ellipticals+S0 in the cluster
    and in the field above z>1, while the previous plot suggests that the
    ratio is more like 3.5 to 1?) If we go with the previous plot, can you
    redo it with all (and only) galaxies above z=1? --S

    Marc Postman wrote:

    > Here is a preliminary color offset plot. Zero offset corresponds to
    > center of red sequence; objects bluer than RCS have negative offsets.
    > If you extrapolate the mean number per large negative (blue) color
    > offset bin into the range where the RCS lies, the excess is still
    > significant. The RCS typically lies in the range -0.1 < Delta Color <
    > +0.15. So this corroborates the spectroscopic plot as well. I will
    > generate precise integrals over the weekend.
    >
    > Marc
    >
    > -----------------------------------------------------------------
    > 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 : Fri Jan 13 2006 - 23:00:39 PST