Electronic Telegram No. 2093
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 2009mg
     P. Roming, Pennsylvania State University; J. Prieto, Carnegie
Observatories; and P. A. Milne, Steward Observatory, report that another
spectrogram of SN 2009mg (range 400-900nm), obtained with the Magellan-Clay
telescope (+ LDSS3) at Las Campanas Observatory on Dec. 24.3 UT shows that
the supernova was initially misclassified on CBET 2087 by Prieto.  The new
spectrum shows clearly that 2009mg is a broad-line type-Ic supernova.
Furthermore, photometry obtained with the Swift UVOT instrument shows that
it is close to maximum light on Dec. 24 at magnitude V about 16.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2009 CBAT
2009 December 24                 (CBET 2093)              Daniel W. E. Green