From: Andy Howell (howell@astro.utoronto.ca)
Date: Tue Feb 08 2005 - 15:17:19 PST
Gabriele,
Good job on the SN 1999ac paper! I only have one real scientific comment,
which may be a first for an SCP spectroscopy paper!
p. 13, the "Day -15" section, I don't understand the paragraph about SII.
You say the "SII feature does not yet appear to be present at phase -15
days." But then you conclude the paragraph with "we regard the presence
of SII in the day -15 spectrum as probable." In fact, I think SII is
there in the spectrum. You can see this if you overplot any other
spectrum with SII. On figure 4, SII would be the 2 bluest features in the
valley around 5400A (you have one of them labeled at CoII, but you don't
say anything about that in the text). But I don't know what the reddest
feature in that valley is (around 5500A). Is that an artifact from
joining the red channel and blue channel? If not it is very puzzling.
This should be addressed in the text.
Minor comments below:
- abstract "the event is not particularly dim" -- "event" is not the right
word here.
-Intro: "photons collected from last scattering" -- strike "collected"
-sometimes you say a feature "dissipates," and while I know what you mean
I don't think it is exactly the right word.
-several times you say "at early phase" -- this should either be "early
phases" or "at an early phase"
-p. 10 you say "brighter SNe like SN 1991T". As I always say -- I think
you should say "spectroscopically peculiar like SN 1991T," because
brighter does not equal SN 1991T and vice versa.
p. 15 when you start talking about explaining things in terms of a P-cygni
profile, you should put a reference to the first paper to figure out that
this is how SNe work:
Kirshner et al. 1973, ApJ, 185, 303
p. 20 multiparameter is not two words
That is all -- again, good paper!
-Andy
On Wed, 26 Jan 2005, Tony Spadafora wrote:
> SCP collaborators:
>
> Gabriele's draft on SN 1999ac is now ready for general collaboration
> review. The latest version is available at
> http://supernovae.in2p3.fr/%7Egaravini/papers/
>
> Please send comments to Gabriele (garavini@in2p3.fr) and CC to
> 99ac@panisse.lbl.gov (nb. the latter is just an archive, NOT a
> maillist) IN TWO WEEKS TIME - i.e. BY FEB 9.
>
> -Tony
>
>
> Tony Spadafora ALSpadafora@lbl.gov
> Physics Division Tel: (510) 495-2316
> Lawrence Berkeley National Lab FAX: (510) 486-6738
> 1 Cyclotron Road BLDG 50R5032
> Berkeley, CA 94720-8160
>
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