From: Ariel Goobar (ariel@physto.se)
Date: Mon Oct 25 2004 - 10:36:03 PDT
Hi,
I forgot to CC a mail I sent earlier to Serena
containing mainly language suggestions. There is one content
issue that I asked her to check: the chi2/dof in section 6
seem hard to reconcile with Fig 14.
Ariel
---------- Forwarded message ----------
Date: Mon, 25 Oct 2004 19:23:29 +0200 (CEST)
From: Ariel Goobar <ariel@physto.se>
To: Serena Nobili <serena@physto.se>
Cc: Ariel Goobar <ariel@physto.se>
Subject: I-band paper
Hi Serena,
below follow a bunch of language suggestions - hopefully
some of them will stand the scutiny of an english native!
Ariel
abstract:
"a Hubble diagram including 26 SNe with $0.01< z<0.1$ was constructed."
--> we cosntruct a Hubble diagram including 26 SNe with $0.01< z<0.1$
"Adding three SNe at $z\sim0.5$"
--> two
"The high redshift restframe $I$-band lightcurves are better fit..."
--> Furthermore, the high redshift restframe $I$-band lightcurves are better fit...
Introduction:
"$\Omega_{\Lambda}$)$\cong$(0.5,0.75)".
--> should read 0.25
"previous works"
--> previous SCP publications
"...Milky-Way type dust ($R_V=3.1$) the ratio of extinction
for the two bands is sizable, $A_B/A_I \sim 2 - 3$".
I am not sure why we give a range in A_B/A_I for one value of R_V,
is this because of time evolution of color?. In general, I would
skip the R_V=3.1 parenthesis.
"...dust for the three $z\sim0.5$ supernovae.
--> two
Section 2.2:
"Only supernovae with at least 6 data points"
^-- I-band
there is a ',' followed by '.' after k-corrections
"A potential source of systematic uncertainties is in
the $K$-corrections"
remove 'is' above
"We have estimated this systematic"
--> source of systematic uncertainty
" Although has been suggested"
^-- it
"As in other cases we find a systematic trend in the residuals"
remove residuals, you have it in the sentence before and I think
is clear.
Sectio 2.3:
" However, of 42 supernovae"
maybe it is clearer ti say out of here??
Section 3.
Footnote 3. again replace 'works' with something else, eg 'analysis'
Concordance model: sometimes 0.3,0.7 others 0.25,0.75. Let's stay
with one!
" The weighted standard deviation would
decrease slightly to 0.25 $\pm$ 0.06 if the Hubble diagram was built
on this sample only."
This is confusing. It is better with the other 2 than 0.25, right? So
it should be the other way around. Also it is only by reading the fig
caption (Fig 7) that the reader finds out that the RMS is 0.17. It should
be written in text, while we are told that effectively it is 0.13
intrinsic.
Sec 4.1
"We assumed 0.05 mag total uncertainty"
--> estimated
Sec 4.2
"CFH-12k"
--> is it CFH or CFHT ?
lowercase on MLCS Distance"
Sec 4.3
somehow I think the fact that that there is a sepctrum, but we
have not seen it should be in one paragraph, rather than 2.
"...extinction with E(B-V) ~0.2"
--> reddning by E(B-V)
Sec 4.4
"Moreover, this SN could also
fitted by the template of SN~1989B, giving a $\chi^2$ similar to
the best fit, but with a fitted $I_{max}$ about 0.2 mag brighter.}
We note that, in the case the time of $B_{\rm max}$ is set to our
value, the fitted $I_{\rm max}$ for SN~1999Q does not change significantly,
but a different template (SN~1998ab) is chosen as best fit."
-->
Moreover, this SN could also be
fitted by the template of SN~1989B, giving a $\chi^2$ similar to
the best fit, but with a fitted $I_{max}$ about 0.2 mag brighter.}
We note that, in the case the time of $B_{\rm max}$ is set to our best
fit value, the resulting $I_{\rm max}$ for SN~1999Q does not change significantly,
but a different template (SN~1998ab) is chosen as best fit."
Section 5:
remove "given the very limited statistics available"
Section 6:
"weight averaged" should there be a '-' in between?
** PLEASE CHECK!!***
the low chi2/dof in the text seem not to match figure 14!
** PLEASE CHECK!!***
-- ___________________________________________________________________ Ariel Goobar (www.physto.se/~ariel) Department of Physics, Stockholm University AlbaNova University Center, SE-106 91 Stockholm, SWEDEN tel: +46 8 55378659 fax: +46 8 55378601
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