Electronic Telegram No. 1484
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 2008cx IN NGC 309
     M. Modjaz, J. M. Silverman, and R. Chornock, University of California,
Berkeley; and L. Kewley, University of Hawaii, report that inspection of
CCD spectra (range 310-925 nm), obtained with LRIS on the Keck I 10-m
telescope on Aug. 28.53 UT, reveals that 2008cx (CBET 1399) is a type-IIb
supernova, approximately 3 months after explosion.  Cross-correlation with
a library of supernova spectra using the "SuperNova IDentification" code
(Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that 2008cx is most
similar to the type-IIb supernova 1996cb at about 100 days after explosion.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2008 CBAT
2008 August 29                   (CBET 1484)              Daniel W. E. Green