Electronic Telegram No. 234
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

SUPERNOVAE 2005ee AND 2005ej
     M. Modjaz, R. Kirshner, and P. Challis, Harvard-Smithsonian Center
for Astrophysics, report that a spectrogram (range 340-740 nm) of SN
2005ee (cf. IAUC 8603), obtained by N. Martimbeau on Sept. 25.32 UT with
the F. L. Whipple Observatory 1.5-m telescope (+ FAST), shows it to be a
young type-II supernova.  The spectrum consists of a flat continuum, a
P-Cyg profile of H_alpha, and absorption troughs of H_beta and other
lines.  Adopting the recession velocity of 9730 km/s for the host galaxy,
as measured from H_alpha emission of an H II region in the host galaxy,
the supernova expansion velocity derived from the minimum of the H_beta
line is about 11000 km/s.  A spectrogram (range 350-740 nm) of SN 2005ej
(cf. CBET 231), obtained on Sept. 25.15 by Martimbeau, shows it to be a
type-Ia supernova, with a spectral-feature age (Riess et al. 1997, A.J.
114, 722) of about 4 (+/- 2) days after maximum light; the supernova
expansion velocity, derived from the minimum of Si II (rest 635.5 nm), and
adopting the NED recession velocity of 11354 km/s for the host galaxy
(from Falco et al. 1999, PASP 111, 438), is about 10000 km/s.

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      superseded by text appearing later in the formal IAU Circulars.

                         (C) Copyright 2005 CBAT
2005 September 26                (CBET 234)               Daniel W. E. Green