[IAUC] CBET 1155: 20071204 : SUPERNOVA 2007rw IN UGC 7798

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                                                  Electronic Telegram No. 1155
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 2007rw IN UGC 7798
     S. Blondin, Harvard-Smithsonian Center for Astrophysics (CfA), on behalf
of the CfA Supernova Group, reports that a spectrogram (range 350-740 nm) of
2007rw (cf. CBET 1154), obtained by P. Berlind on Dec. 4.55 UT with the F. L.
Whipple Observatory 1.5-m telescope (+ FAST), shows it to be a type-IIb
supernova around three weeks past explosion.  Cross-correlation with a
library of supernova spectra using the "Supernova Identification" code (SNID;
Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that 2007rw is most
similar to SN 1993J at 18 days past explosion (Matheson et al. 2000, A.J.
120, 1487).


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                         (C) Copyright 2007 CBAT
2007 December 4                  (CBET 1155)              Daniel W. E. Green