From: Greg Aldering (aldering@panisse.lbl.gov)
Date: Thu Apr 22 2004 - 03:56:43 PDT
Hi Serena,
I have two quick thoughts (all that 4km altitude allows!) which you or
others in the group might consider looking into.
First, have we plotted our SNminuit B-V color curve for 99Q compared to
that given in Riess' paper? Do we agree?
Second, 99Q is supposedly a Ia, and its redshift was determined by
cross-correlation with a Ia spectrum as no host galaxy spectrum was
obtained; we have not seen the spectrum so we can not challenge this
classification but it might be good to know whether the colors are more
consistent with a Ib/c. Perhaps Lifan or Peter could comment on
whether this is a credible possibility.
Aloha,
Greg
>Dear all
>as I have been asked, I have added SN 1999Q in the ellipse-like plot. You
>can see it at:
>
> http://www.physto.se/~snova/internal/papers/iband/#99q
>
>(see Figure D of the series). I think we don't quite understand the colors
>of this SN still, and I am not sure whether we really want to add it to
>the paper, unless we can explain better what is happening. Please, send me
>comments and thoughts on it, because I am really running out of ideas.
>Cheers
>
> Serena
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