[IAUC] CBET 1499: 20080908 : SUPERNOVAE 2008fi AND 2008fk

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                                                  Electronic Telegram No. 1499
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVAE 2008fi AND 2008fk
     P. Challis, Harvard-Smithsonian Center for Astrophysics (CfA), on
behalf of the CfA Supernova Group, reports that a spectrum (range 350-740
nm) of 2008fi (cf. CBET 1493), obtained on Sept. 4 UT by W. Peters with
the F. L. Whipple Observatory 1.5-m telescope (+ FAST), shows it to be a
type-IIb supernova at about maximum light.  Cross-correlation with a
library of supernova spectra using the "Supernova Identification" code
(Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that 2008fi is most
similar to a spectrum of the type-IIb supernova 1997dd (cf. IAUCs 6724,
6725, 6742) taken on 1997 Sept. 6 (Matheson et al. 2001, A.J. 121, 1648).
The spectrum shows general agreement to other type-IIb supernovae around
maximum light.
     A low-signal-to-noise-ratio spectrum (range 350-740 nm) of 2008fk
(cf. CBET 1494), obtained as above on Sept. 5 UT, shows it to be a normal
type-Ia supernova at about maximum light.  The redshift measured from
H_alpha emission is 0.072.


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                         (C) Copyright 2008 CBAT
2008 September 8                 (CBET 1499)              Daniel W. E. Green