Electronic Telegram No. 993
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 2007fb IN UGC 12859
     D. K. Sahu, G. C. Anupama, S. Kumar, and B. Mathew, Indian Institute
of Astrophysics, report that a spectrum (range 360-910 nm) of 2007fb (cf.
CBET 992), obtained on July 5.9 UT with the Indian Astronomical
Observatory's 2-m Himalayan Chandra Telescope (+ HFOSC), shows it to be
a normal type-Ia supernova.  The spectrum is similar to that of SN 2003du
about one week before maximum light in the B band (Anupama et al. 2005,
A.Ap. 429, 667).  Adopting a recession velocity of 5400 km/s for the host
galaxy (de Vaucouleurs et al. 1991, Third Reference Catalogue of Bright
Galaxies), the blue-shifted velocity of the Si II 635.5-nm absorption is
estimated as approximately 11300 km/s.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2007 CBAT
2007 July 6                      (CBET 993)               Daniel W. E. Green