[IAUC] CBET 784: 20061225 : SUPERNOVA 2006su IN IC 3772

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                                                  Electronic Telegram No. 784
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVA 2006su IN IC 3772
     S. Blondin, M. Modjaz, R. Kirshner, and P. Challis, Harvard-Smithsonian
Center for Astrophysics, report that a spectrum (range 350-740 nm) of 2006su
(cf. CBET 782), obtained on Dec. 24.53 UT by P. Berlind with the F. L.
Whipple Observatory 1.5-m telescope (+ FAST), shows it to be a type-Ia
supernova around 3-4 weeks past maximum light.  Cross-correlation with a
library of type-Ia supernova spectra indicates that 2006su is most similar
to SN 2000cf (cf. IAUC 7423) at 26 days past maximum.  Narrow emission
lines from the host galaxy are detected at a redshift of cz = 14036 +/- 47
km/s.
     R. J. Foley and A. V. Filippenko, University of California, Berkeley,
report that inspection of CCD spectra (range 450-950 nm), obtained on Dec.
23 UT with the Keck II 10-m telescope (+ DEIMOS), shows that 2006su is a
type-Ia supernova, roughly 3-4 weeks after maximum brightness.


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                         (C) Copyright 2006 CBAT
2006 December 25                 (CBET 784)               Daniel W. E. Green