Electronic Telegram No. 1930
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 2009ih IN MCG +07-33-12
     J. M. Silverman, M. T. Kandrashoff, A. J. L. Morton, and A. V.
Filippenko, University of California, Berkeley, report that inspection
of a CCD spectrum (range 340-1020 nm), obtained on Aug. 28 UT with the 3-m
Shane reflector (+ Kast) at Lick Observatory, shows that 2009ih (CBET 1919)
is a type-Ia supernova similar to the subluminous supernova 1991bg (Filippenko
et al. 1992, A.J. 104, 1543).  After removing the host-galaxy recession
velocity (9858 km/s; Falco, et al. 1999, Ap.J. 560, 566), the absorption
minimum of the Si II 635.5-nm feature is found to be blueshifted by about
10500 km/s.  Cross-correlation with a library of supernova spectra using the
"SuperNova IDentification" code (SNID; Blondin and Tonry 2007, Ap.J. 666,
1024) indicates that it is about five days past maximum light.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2009 CBAT
2009 August 29                   (CBET 1930)              Daniel W. E. Green