Electronic Telegram No. 1804
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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CBAT@CFA.HARVARD.EDU (science)
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SUPERNOVA 2009en IN UGC 9515
     M. L. Graham, E. Y. Hsiao, C. J. Pritchet, A. Parker, and S. Sadavoy,
Department of Physics and Astronomy, University of Victoria; and D. D. Balam,
Dominion Astrophysical Observatory, National Research Council of Canada,
report that a spectrogram (range 390-703 nm, resolution 0.3 nm) of 2009en
(cf. CBET 1799), obtained on May 15.29 UT with the 1.82-m Plaskett Telescope
of the National Research Council of Canada, shows it to be a type-Ia
supernova several days past maximum light.  Cross-correlation with a library
of supernova spectra, using the "Supernova Identification" code of Blondin and
Tonry (2007, Ap.J. 666, 1024), indicates that 2009en is most similar to the
type-Ia supernova 2002er at 3 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      superseded by text appearing later in the printed IAU Circulars.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 May 16                      (CBET 1804)              Daniel W. E. Green