From: Lifan Wang (lifan@panisse.lbl.gov)
Date: Mon Mar 22 2004 - 17:35:34 PST
You are half right as it is both the problem of the feature (around 7000
in particular) and the color. What I show in the plot are just the
observed spectra scaled by a constant to match your spectral template with
a number of observed spectra.
May be all the observations are wrong ? (which is possible as the
calibrations may all be wrong).
Cheers,
Lifan
On Mon, 22 Mar 2004, Robert A. Knop Jr. wrote:
> On Mon, Mar 22, 2004 at 03:47:08PM -0800, Lifan Wang wrote:
> > Hi, Chris,
> >
> > No, my K-Corr are from over 500 real SN spectra. 94D was used for
> > light curve template.
> >
> > The difference is caused by the spectral templates - I do not
> > believe the so called ueber spectra reflects any real SN in the I-band.
> >
> > The attached figure compares Serena's uber spectrum at day 0 with
> > a number of around max SNe.
>
> Looking at this figure, the problem is clearly not the features. The
> problem is the coloring of the continuum-- and it's not obvious to me
> that what you did is better than what Serena did.
>
> Assuming that your spectrum for K-corrections is the red one (is that
> what it is?), you've got very different R-I colors just in the level of
> the continuum.
>
> Given that: how did you decide the colors to normalize this to? Did you
> use 94D for everything? How do 94D's colors compare to everything else?
>
> Remember that Serena careful normalized her colors using a procedure
> documented in her previous paper. Please tell us how you normalized
> your colors and ensured that the photometric integratons were right.
>
> -Rob
>
>
-- Lifan Wang (510) 495 2733 (o) (510) 704 0119 (h)
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