From: Serena Nobili (serena@physto.se)
Date: Tue Mar 09 2004 - 04:06:42 PST
Dear Lifan,
given the disagreement you pointed out between your and my K-corrections
it would be nice to try to find out what is going on. As I recall it, you
said the differences were only above redshift 0.07, is this correct? I
send you as attachment K-corrections I computed using my spectral
templates (which you find in the Stockholm web page:
http://www.physto.se/~snova/private/templates/snflux_1a_serena.dat.gz ) as
a function of time for some relevant redshift (z=0.01,0.05,0.08). Also, it
would be nice to understand what spectra you are using for computing the
K-corrections (perhaps we could start with a list of them).
Meanwhile, can you provide me with a list of SNe that you have in the
Hubble diagram and their fitted Imax? This way I can check why I seem to
get a larger dispersion than you.
Thank you for your help.
Cheers
Serena
On Tue, 24 Feb 2004, Serena Nobili wrote:
>
>2) Lifan computes different K-corrections than I. We should try to
> compare them and figure out why there are differences. Serena uses
> the spectral templates published in Nobili et al 2003. Lifan uses a
> sample of nearby spectral templates for which he computes the
> K-corrs and average them out. Lifan will try to compare them.
> As Ariel pointed out, we would like to use templates for computing
> K-corrections, as this is used for the high-z SNe, in order not to
> treat them differently.
>
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