[IAUC] CBET 1524: 20081002 : SUPERNOVA 2008fz

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                                                  Electronic Telegram No. 1524
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 2008fz
     A. J. Drake, S. G. Djorgovski, A. Mahabal, M. J. Graham, and R.
Williams, California Institute of Technology; E. C. Beshore, S. M. Larson,
and R. Hill, Lunar and Planetary Laboratory, University of Arizona; and E.
Christensen, Gemini Observatory, report the discovery in the course of the
Catalina Real-time Transient Survey (CRTS) of an apparent supernova
detected in multiple sequences of unfiltered CCD exposures taken with the
0.7-m f/1.9 Catalina Schmidt telescope (+ 4000x4000 camera):

    SN       2008 UT        R.A. (2000.0) Decl.      Mag.
    2008fz   Sep. 22.34   23 16 16.60  +11 42 47.5   17.1

Additional magnitudes for 2008fz:  June 13.42 UT, [20.0 (CRTS); Sept. 23.14,
17.3 (Palomar 1.52-m reflector + Gunn r filter); 24.14, 17.2 (Palomar; Gunn
r); 28.37, 17.0 (CRTS).  No galaxy host is seen in past co-added Catalina
Sky Survey images (to mag 22) or co-added Palomar-Quest images in Johnson
I and B and Gunn g, z, and r filters (to mag 21.5-23).
     E. Y. Hsiao, M. L. Graham, C. J. Pritchet, and D. Balam, Department of
Physics and Astronomy, University of Victoria, report that a noisy
spectrogram (range 390-703 nm, resolution 0.3 nm) of 2008fz, obtained on
Sept. 23.33 UT with the 1.82-m Plaskett Telescope of the National Research
Council of Canada, shows it to be a type-Ic supernova at 2 weeks past
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 2008fz is most similar to the type-Ic supernova 1998bw at
16 days past maximum light.  There is a faint extended object at the position
of the object on the digitized blue plate of the second Palomar Sky Survey.


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                         (C) Copyright 2008 CBAT
2008 October 2                   (CBET 1524)              Daniel W. E. Green