Electronic Telegram No. 1883
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVA 2009gk IN UGC 11803
     T. N. Steele, I. K. W. Kleiser, A. J. L. Morton, R. Chornock, and A. V.
Filippenko, University of California, Berkeley, report that inspection of a
CCD spectrum (range 350-1080 nm), obtained on July 23 UT with the 3-m Shane
reflector (+ Kast) at Lick Observatory, shows that SN 2009gk (CBET 1859) is
a type-IIb supernova.  Cross-correlation with a library of supernova spectra
using the "SuperNova IDentification" code (SNID; Blondin and Tonry 2007, Ap.J.
666, 1024) finds a best-fit match with the spectrum of SN 1993J at 6 days
after maximum light.  The expansion velocity measured from the minimum of the
H-alpha absorption is 11,300 km/s.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2009 CBAT
2009 July 25                     (CBET 1883)              Daniel W. E. Green