Electronic Telegram No. 750
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)
URL http://cfa-www.harvard.edu/iau/cbat.html


SUPERNOVA 2006or IN NGC 3891
     S. Blondin, M. Modjaz, R. Kirshner, and P. Challis, Harvard-Smithsonian
Center for Astrophysics, report that a spectrum (range 350-740 nm) of 2006or
(cf. CBET 749), obtained on Nov. 22.52 UT by W. Peters with the F. L.
Whipple Observatory 1.5-m telescope (+ FAST), shows it to be a type-Ia
supernova around maximum light.  Cross-correlation with a library of
supernova spectra indicates that 2006or is most similar to the type-Ia
supernova 1998eg (cf. IAUC 7037) at 4.9 days past maximum light.  Adopting a
recession velocity of 6219 km/s for the host galaxy (from Falco et al. 2000,
"The Updated Zwicky Catalog", vol. 1), the maximum absorption in the Si II
line (rest 635.5 nm) is blueshifted by roughly 11500 km/s.  Also,
interstellar Na I D absorption at the redshift of the host galaxy is visible
in the spectrum with an equivalent width of 0.3 nm.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2006 CBAT
2006 November 22                 (CBET 750)               Daniel W. E. Green