Electronic Telegram No. 981
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 2007cp IN IC 807
     F. J. D. Serduke, L.-B. Desroches, M. Ganeshalingam, and A. V.
Filippenko, University of California, Berkeley, report that inspection
of a CCD spectrum (range 560-930 nm), obtained on June 14 UT with the
3-m Shane reflector (+ Kast) at Lick Observatory, shows that 2007cp
(CBET 980) is a type-Ia supernova, probably less than a week past
maximum brightness.  Removing the host-galaxy recession velocity of
10971 km/s (da Costa et al. 1998, A.J. 116, 1), the minimum of the Si
II 635.5-nm absorption feature is found to be blueshifted by roughly
11000 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      superseded by text appearing later in the printed IAU Circulars.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 June 15                     (CBET 981)               Daniel W. E. Green