Electronic Telegram No. 1709
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)
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SUPERNOVA 2009an IN NGC 4332
     P. Challis, Harvard-Smithsonian Center for Astrophysics (CfA), on behalf
of the CfA Supernova Group, reports that a spectrum (range 360-800 nm) of
2009an (cf. CBET 1707), obtained on Feb. 28 UT by J. Huchra with the F. L.
Whipple Observatory 1.5-m telescope (+ FAST), shows it to be a type-Ia
supernova.  Cross-correlation with a library of supernova spectra, using the
"Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666,
1024), indicates that 2009an is a normal type-Ia supernova about 5 days
before maximum brightness.
     Further to his report published on CBET 1707, S. Moretti has posted an
image of 2009an at http://it.geocities.com/gruppoastrofiliforlivesi/4332.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2009 CBAT
2009 March 1                     (CBET 1709)              Daniel W. E. Green