From: Robert A. Knop Jr. (robert.a.knop@vanderbilt.edu)
Date: Wed Apr 30 2003 - 18:01:55 PDT
On Wed, Apr 30, 2003 at 05:35:57PM -0700, Andy Howell wrote:
> (1) Throw out these two SNe in some fit. But since I'm sure you aren't
> going to do that, we can also...
What I can do is throw these two out of Subset 3, and just rerun those
fits. That won't take too long, and is tractable (since it's just one
fit, and only shows up in one subsection and won't change most of the
analysis of the paper). Hopefully it won't make too much difference in
that systematic.
Can we honestly say that those two are as likely to be Ia's as the other
ones listed as "dubious"? (See the "Subsets" section.) That lets us
leave them in the primary subset, and will not change anything in the
paper except for that one small part of the systematic error section
where we throw out others with a "not completely secure" identification.
> (2) See if Eric has more final reductions of these SNe. Isobel's
> reductions were preliminary.
Eric-- if you're reading this, mail forward whatever postscript files
you have for the latest plots of these supernovae, and/or send the ASCII
spectrum files to Andy. I'm not sure if Eric has better spectra for
these or not-- he's only getting started on that run.
> (3) Check to see if either is in an E galaxy. Neither are in the
> Sullivan paper. The images that Quimby shows aren't conclusive to me.
> Isobel's spectra notes say that the host of 9878 shows Ca H & K, so
> maybe it is in E, but the host of 98104 has OII, OIII, so maybe it
> isn't.
Take a look at the spectra and the HST images. Alex C. should be able
to help you find the HST images.
> (4) Peter is going to check the colors of the SN tonight to see if we
> can say anything about them.
All I can say about the colors is that neither had an extreme E(B-V)
(positive or negative), and thus had colors from the lightcurve
consistent with Ia's at the identified redshift.
-Rob
-- --Prof. Robert Knop Department of Physics & Astronomy, Vanderbilt University robert.a.knop@vanderbilt.edu
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