From: Ariel Goobar (ariel@physto.se)
Date: Thu May 02 2002 - 04:58:24 PDT
Dear Deepnews,
I have started to look into the photometry follow-up issue for
potential z~0.5 SNe discovered at CTIO at fields other than the
CFHT fields. In the Stockholm webpage, I have posted a ps-file
with possible lightcurve scenarios (klick on
"R&I lightcurves for CTIO discoveries around z=0.5").
The strongest limitation is the poor sampling during the first
3 weeks after max. We are very dependent on the WIYN time, especially
the night of May 31. FORS2 and GMOS imaging are a good fall-back
instruments in case teh TNG and WIYN time in june would be
insufficient.
Thus, considering the May 31 night as the bottleneck, the upper
bound on the number of SNe we could follow is given by how many R & I
data points we can get on that night (mag 23-23.5). According to the ETC
at http://www.noao.edu/gateway/ccdtime/ it would take ~1 hour/SN.
As the fields (+14 h, +5 deg) are within an airmass< 2 about 4.5 hours
during that night. Thus it seems to me that 4-5 z~0.5 SNe could be a
reasonable number to follow.
Comments and suggestions are, as always, very welcome.
Cheers,
Ariel
-- ___________________________________________________________________ Ariel Goobar (ariel@physto.se) FYSIKUM, Stockholm University Stockholm Center for Physics, Astronomy & Biotechnology tel: +46 8 55378659
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