Re: d(R-I) cut

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On Wed, May 21, 2003 at 11:16:45AM -0700, Greg Aldering wrote:
> I spoke with Saul about your suggested cutting of objects with
> d(R-I) > 0.25 and he is OK with it. Something more sophisticated,
> like propagating the color error through to the K-correction error
> and peak magnitude error can be tried in the future, but is too
> complex to reliably try at this juncture.

The practical difference would probably be small, since most of those
cut were around z~0.6 where the K-correction errors are bad anyway.

A color cut is clean and simple.

I'm going to have an undergrad this summer looking in more detail into
K-correction uncertainties.

-Rob

-- 
--Prof. Robert Knop
  Department of Physics & Astronomy, Vanderbilt University
  robert.a.knop@vanderbilt.edu

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