[IAUC] CBET 853: 20070221 : SUPERNOVA 2007ab IN MCG -01-43-2

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                                                  Electronic Telegram No. 853
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
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SUPERNOVA 2007ab IN MCG -01-43-2
     S. Blondin, M. Modjaz, R. Kirshner, and P. Challis, Harvard-Smithsonian
Center for Astrophysics, report that a spectrogram (range 350-740 nm) of
2007ab (cf. CBET 851), obtained by K. Rines on Feb. 21.56 UT with the F. L.
Whipple Observatory 1.5-m telescope (+ FAST), shows it to be a type-II
supernova roughly 2 weeks past explosion.  The spectrum is most similar to
that of the type-II supernova 1987A at 14 days past explosion.  Adopting a
recession velocity of 7189 km/s for the host galaxy (from de Vaucouleurs et
al. 1991, Third Ref. Cat. of Bright Galaxies, ver 3.9), the maximum
absorption in the H_beta line (rest 486.1 nm) is blueshifted by roughly
9500 km/s.


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                         (C) Copyright 2007 CBAT
2007 February 21                 (CBET 853)               Daniel W. E. Green