From: Peter Nugent (nugent@panisse.lbl.gov)
Date: Wed Apr 30 2003 - 19:03:50 PDT
What I will attempt to do tonight is look at the color-color plots for
Ia's and Ib/c's and see how they compare to our data. I have done this for
the fits at peak and those two that Andy and I question definitely lie in
the area of being more likely Ia's. Hopefully with a few color points or
LC's I can state this to some certainty. Andy has pointed me to a
reference to this so in the end I think we might just need to add the
following statement:
The quality of the spectra for SNe 1998be and 1998ay are such that we can
only state that they are not inconsistent with a Type Ia at the redshift
of the host and the epoch with respect to peak brightness obtained from
the lightcurve. However, due to the fact that our {\it HST} observations
obtained high S/N multi-color photometry of these supernovae at several
epochs, we can state that these supernovae have a color evolution which is
only consistent with a SN~Ia (see \cite{poz02}.
@ARTICLE{2002PASP..114..833P,
author = {{Poznanski}, D. and {Gal-Yam}, A. and {Maoz}, D. and
{Filippenko}, A.~V. and
{Leonard}, D.~C. and {Matheson}, T.},
title = "{Not Color-Blind: Using Multiband Photometry to Classify
Supernovae}",
journal = {\pasp},
year = 2002,
month = aug,
volume = 114,
pages = {833-845},
adsurl =
{http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2002PASP..114..833P&db_key=AST},
adsnote = {Provided by the NASA Astrophysics Data System}
}
Then we won't have to redo anything if the colors look kosher. I'll get
back to you by tomorrow morning.
Cheers,
Peter
--
Peter E. Nugent
Staff Computational Scientist - Scientific Computing Group - NERSC
Lawrence Berkeley National Laboratory
M.S. 50F-1650 - 1 Cyclotron Road - Berkeley, CA, 94720-8139
Phone:(510) 486-6942 - Fax:(510) 486-5812
E-mail: penugent@LBL.gov - Web: http://supernova.LBL.gov/~nugent
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