[IAUC] CBET 916: 20070409 : SUPERNOVA 2007bb IN UGC 3627

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                                                  Electronic Telegram No. 916
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 2007bb IN UGC 3627
     S. Blondin, M. Modjaz, R. Kirshner, and P. Challis, Harvard-Smithsonian
Center for Astrophysics, report that a spectrum (range 350-740 nm) of 2007bb
(cf. CBET 912), obtained on Apr. 8.17 UT by M. Calkins with the F. L.
Whipple Observatory 1.5-m telescope (+ FAST), shows it to be a type-IIn
supernova, roughly one week past explosion.  The spectrum consists of a blue
continuum and emission lines of the Balmer series, with a narrow component
of about 400 km/s (FWHM for H_alpha) superposed on a weaker and broader
component of about 2000 km/s (FWHM for H_alpha).


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                         (C) Copyright 2007 CBAT
2007 April 9                     (CBET 916)               Daniel W. E. Green