[IAUC] CBET 619: 20060912 : SUPERNOVA 2006et IN NGC 232

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                                                  Electronic Telegram No. 619
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVA 2006et IN NGC 232
     N. Elias-Rosa, H. Navasardyan, A. Harutyunyan, S. Benetti,
E. Cappellaro, and M. Turatto, Istituto Nazionale di Astrofisica,
Osservatorio Astronomico di Padova, report that a spectrum of SN
2006et (cf. IAUC 8745), obtained on Sept. 12.04 UT with the Asiago
1.8-m telescope (+ AFOSC; range 345-780 nm, resolution 2.4 nm),
shows it to be similar to those of the slow-declining, type-Ia
supernovae (e.g., 1997br and 1995ac) around maximum light.
Adopting the NED recession velocity of 6647 km/s (from Keel 1996,
A.J. 111, 696) for the parent galaxy, the expansion velocity deduced
from the Si II 635.5-nm minimum is about 9400 km/s.  An interstellar
Na I D absorption feature is visible in the host-galaxy rest frame
with an equivalent width of about 6 nm, suggesting high reddening
[E(B-V) > 1 mag (Turatto et al. 2003, in *From Twilight to Highlight:
The Physics of Supernovae*, ed. by Hillebrandt and Leibundgut
(Springer-Verlag), p. 200].


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                         (C) Copyright 2006 CBAT
2006 September 12                (CBET 619)               Daniel W. E. Green