[IAUC] CBET 1546: 20081021 : SUPERNOVA 2008gj IN NGC 7321

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Mar Oct 21 20:09:21 ARST 2008


                                                  Electronic Telegram No. 1546
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVA 2008gj IN NGC 7321
     P. Challis, Harvard-Smithsonian Center for Astrophysics (CfA), on
behalf of the CfA Supernova Group, reports that a low-signal-to-noise-ratio
spectrum (range 350-740 nm) of 2008fu (cf. CBET 1541), obtained on Oct. 20
UT by M. Calkins and S. Tang with the F. L. Whipple Observatory 1.5-m
telescope (+ FAST), shows it to be a type-Ic supernova.  Cross-correlation
with a library of supernova spectra using the "Supernova Identification"
code (Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that 2008gj is most
similar to a normal type-Ic supernova at 12 days past maximum.
     G. Duszanowicz, Akersberga, Sweden, reports his independent discovery
of 2008gj at red mag 17.9 on CCD images (limiting red mag 18.4) obtained
on Oct. 19.716 and 20.864 UT with a 32-cm reflector; he measures the position
of 2008gj to be R.A. = 22h36m28s.57, Decl. = +21d37'55".2 (equinox 2000.0),
which is about 5" east and 37" north of the center of the galaxy NGC 7321.
Nothing was visible at this position on Duszanowicz's images taken on Sept.
23.874 and Oct. 5.779 (limiting red mag 18.5) or on a Palomar Sky Survey
red F plate (via Digitized Sky Survey).


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                         (C) Copyright 2008 CBAT
2008 October 21                  (CBET 1546)              Daniel W. E. Green



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