Re: S01-004 and S01-033

From: Andy Howell (howell@astro.utoronto.ca)
Date: Fri Mar 12 2004 - 13:11:49 PST

  • Next message: Chris Lidman: "New version of VLT spectroscopy paper - version 1.1"

    Yes I realized that right after I sent the email.
    Here it is binned at 20A.

    -Andy

    On 12 Mar 2004, Chris Lidman wrote:

    > Hi Andy,
    > Thanks for the data. In order to make them consistent with the other
    > plots in the paper, can you rebin the host galaxy subtracted data. I
    > do not recall what you had used in the past, but I think it was close
    > to 20 Angstroms.
    >
    > Cheers, Chris.
    >
    >
    >
    > On Thu, 2004-03-11 at 20:18, Andy Howell wrote:
    > > Chris,
    > > I agree that we should take S01-035 out.
    > >
    > > Also, I have refit S01-031 at z=0.777 allowing only E and S0 subtraction.
    > > I think it is a probable Ia, if there is significant host contamination or
    > > reddening (the original observation is very red -- my program has to
    > > subtract a lot of host and deredden to make it fit a Ia). So Ia? -> Ia is
    > > fine with me. A tar.gz file with postscript and text files of my
    > > new fit are attached.
    > >
    > > -Andy
    > >
    > > On 11 Mar 2004,
    > > Chris Lidman wrote:
    > >
    > > > Hi Andy,
    > > > I am thinking of excluding S01-035 from sample. We observed this
    > > > one because it was bright and the seeing at the time was very bad.
    > > > If the observations had have been done in service, we would
    > > > not have even observed this target this candidate. The candidate
    > > > is probably a variable star of some kind.
    > > >
    > > > Opinions. This is the only I think we should exclude.
    > > >
    > > > Cheers, Chris.
    > > >
    > > > On Thu, 2004-03-11 at 18:17, Chris Lidman wrote:
    > > > > Hi Andy,
    > > > > In regards to S01-004, I should have said that the spectrum
    > > > > was taken 21 days after the reference images which showed nothing -
    > > > > no host, no SN. I'll leave the classification of this one as "?"
    > > > >
    > > > > I've had a closer look at the spectrum of S01-031 and I believe that
    > > > > I see the H and K in what we can probably now classify as
    > > > > an elliptical host. This would put the host at z=0.777. From
    > > > > your fits, a SN at z=0.76 was the best fit and we had classified
    > > > > this as a possible Ia. I'm thinking of raising the status of this one
    > > > > from Ia? to Ia.
    > > > >
    > > > > Cheers, Chris.
    > > > >
    > > > >
    > > >
    >





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