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Дата изменения: Unknown Дата индексирования: Tue Oct 2 05:04:28 2012 Кодировка: Поисковые слова: south pole |
Full paper (Postscript, 5 pages including 2 figures, gzipped, 150 KB)
accepted for publication in MNRAS.
Location of the object in the HDF
Photometry of the supernova in B, V, and I as a function of
the (observer) time; day=0 corresponds to the first observation.
Each point shows the 1 sigma photometric errors and the time span
covered by the data; the dotted lines are the 3 sigma limits
of each image. The the arrows in
the I panels show the 3 sigma upper limits.
The solid thick lines are a fit obtained from a K-corrected,
time-dilated
SNIb light curve at z= 0.95 with tmax=34.0, E(B-V)=0.04 and omega=0.1.
The spectrum and the time evolution of a SNIb simultaneously fit the
magnitudes of the variable object and its evolution in the three
filters.
The underlying galaxy results to have B=28.70, V=29.10 and I=29.15.
Also shown are the curves for a SNIa at z~1.3 (short dashed)
and a SNII at z~1.1 (long dashed) which do not provide an
acceptable match.
Images of 2-584.2 in the B, V and I bands. The three images on the left are the total HDF-N images by Williams et al. 1996 with a pixel scale of 0.04 arcsec/pixel. On the right the time sequence in each filter with pixel scale of 0.05 arcsec/pixel showing the brightening of the object in V and I and its following dimming. Each image is labelled by the filter and the time range of the observations in days. The size of the central squares is 1 arcsec.