Electronic Telegram No. 2092
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 2009mv
     Further to CBET 2090, A. J. Drake, S. G. Djorgovski, A. Mahabal, M. J.
Graham, and R. Williams, California Institute of Technology; M. Catelan,
Pontificia Universidad Catolica de Chile; E. C. Beshore and S. M. Larson,
Lunar and Planetary Laboratory, University of Arizona; and E. Christensen,
Gemini Observatory, report the CRTS discovery of a supernova in unfiltered
Catalina Sky Survey (CSS) images:

 SN       2009 UT       R.A. (2000.0) Decl.      Mag.      Offset
 2009mv   Dec. 16.32   7 15 39.74  +35 14 28.5   17.4    1".1 E, 4".6 S

Nothing was visible at this position on a CSS image from Nov. 25.43 UT
(limiting mag 18.5).  A spectrogram (range 390-800 nm) of 2009mv was
obtained with the Palomar 5-m reflector (+ DBSP) on Dec. 19.35; cross-
correlation with a library of supernova spectra using the "SuperNova
IDentification" code (Blondin and Tonry 2007, Ap.J. 666, 1024) shows 2009mv
to be most similar to the peculiar type-Ia supernova 2006gz at five days
past maximum light.
     C. V. Griffith, J. J. Kong, I. K. W. Kleiser, and A. V. Filippenko,
University of California, Berkeley, report that inspection of a CCD spectrum
(range 360-1000 nm), obtained on Dec. 18 UT with the 3-m Shane reflector (+
Kast) at Lick Observatory, also shows that 2009mv is a type-Ia supernova
within a few days of maximum brightness.


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      superseded by text appearing later in the printed IAU Circulars.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 2092)              Daniel W. E. Green