Electronic Telegram No. 687
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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CBAT@CFA.HARVARD.EDU (science)
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SUPERNOVA 2006iv IN UGC 6774
     J. Sollerman, Department of Astronomy, Stockholm University; J. Fynbo,
Dark Cosmology Center, Niels Bohr Institute, Copenhagen University; V.
Stanishev, Stockholm University; and S. Blondin, Harvard-Smithsonian Center
for Astrophysics, report on a spectrogram (10-min exposure; range 340-900
nm) of 2006iv (cf. CBET 662, IAUC 8759), obtained on Oct. 22.27 UT with the
2.56-m Nordic Optical Telescope (+ ALFOSC) by E. Leitet and A. Blomkvist of
Uppsala University.  The spectrum shows it to be a type-IIb supernova after
maximum light, being very similar to that of SN 1997dd (Matheson et al.
2001, A.J. 121, 1648).  There are conspicuous absorption lines at 577 nm,
likely associated with He I blueshifted at approximately 7000 km/s.  The
strong absorption at 635 nm could be due to H-alpha at a blueshift of about
12000 km/s (adopting the recession velocity of the host galaxy, 2385 km/s,
from Theureau et al. 1998, A.Ap. Suppl. 130, 333, via NED).


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2006 CBAT
2006 October 23                  (CBET 687)               Daniel W. E. Green