kcor exercise      May 4 2004

goal:
   calculate kii for 20 nearby SNe

Various inputs :
   Peter's spectral template (adjusted to mean colors)  
   same modified by Serena 
   94D spectrum 
   94D colors
   various SNe spectra + colors

Various procedures
   (capital letters refer to column in the attached file)
   Serena: S: uses her version of Peter's template
              does not adjust to individual colors
   Lifan: L: use some actual spectra and colors
   Peter: P1: uses his template
          P2: use 94D spectrum with 94 colors 
          P3: his template with 94 colors
Output:
   attached file with 
   Snname, redshift,S,L,P1,P2,P3

Quick analysis (5' before the meeting - for discussion)
    - up to 0.2m between S and L 
    - increase with z
    -  L=P2 +/- 0.02
    -  S=P1 +/- 0.03
    -  P2=P3 +/- 0.01
   
My conclusion based on the above
   
   the differences - as large as 0.2m - come from the 
   differences in the spectra

May,4 2004
Reynald