From: Alex Conley (aconley@panisse.lbl.gov)
Date: Thu Mar 13 2003 - 11:21:35 PST
What, already comments, before we've even had time to discuss the
paper? Don't worry, none of these are substantive. They are mostly
about me trying to hunt down references and spot minor typos for you.
Abstract : The \Omega_{\Lambda} quote is wrong, both because it calls
it \Omega_{M} and because something went wrong with the error bars.
p 3. col 2. R-I lightcurve colors
Maybe we should say restframe B-V colors instead of R-I.
p 4. col 2. Some echoing
There is a partial paragraph which wasn't deleted 'are precise enough
such that the contribution...'
p 4. col 2. REF for UBVRI->HST
The reference should probably be the WFPC2 Handbook. Look in section
3.2.
p 4. col 2. scale for PC
The scale for the PC is incorrectly listed as 0.5" pix. It is actually
more like 0.04554"/pix, but 0.05" is probably good enough.
p 5. Still don't like the way that table is written...
p 6. col 1. ALEXC questions
The HST reduction pipeline was just the On the Fly stuff you get from
the archive when you ask for files. I don't know a good reference for
it, but here is a brief discussion from
(http://archive.stsci.edu/hst/retrieval_help.html#data_otfc)
ST ScI's On-the-fly Reprocessing (OTFR) system for WFPC2 and STIS was
opened to external users in December of 1999. As of June 2000, ST ScI
stopped archiving calibrated data for WFPC2 and STIS. In the first week
of April 2001, we released the On The Fly Reprocessing System for STIS and
WFPC2 data. On-the-fly Reprocessing for NICMOS data was implemented on
Septmeber 26, 2001. Eventually all new instruments will use OTFR.
The background was subtracted by crrej. You should mention crrej by name,
since it isn't part of the standard pipeline, and there are other possible
routes to cosmic ray rejection (drizzle, lacosmic). crrej is a task
in the STSDAS IRAF package.
p 6. col 2. Geometric transformations
It's worth mentioning that the extreme scarcity of objects is the real
problem. There are people out there (Jay Anderson, Ivan King) who have
done much better with multi-chip info, but they had lots o' objects to
work with.
'Note that due to the extreme scarcity of objects in our images,
geometric transformations between the images at different epochs using
other objects on the four chips of WFPC2 allowed an a priori determination
of (x0i,y0i) good to only ~1 pixel;...'
p 6 col 2. f0i
The i in f0i didn't get properly lowered.
p 6 col 2. `supernova-free
Where's the closing quote to supernova-free?
p 6 col 2. Tiny tim ref
That's hard, but you may be able to source the tiny tim users guide
http://www.stsci.edu/software/tinytim/tinytim.pdf
p 7. col 2. F675WS -- extra S, it's just F675W
p 8. col 1. MINUIT ref
The Minuit reference manual is online at
http://wwwinfo.cern.ch/asdoc/minuit/minmain.html
p 10. col 1. 'much poor signal to noise' should be 'much poorer signal to
noise'
p 17. Fig 2. There has to be a better word for the P99 fits than
'Stroked'
p 17. col 1. Discussion of Riess prior
The sentence at the end of col1 is a bit confusing. Maybe there
should be the word prior in there : 'the fact that their prior included
zero weight...'
Alex
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