Electronic Telegram No. 1338
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://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVA 2008bs IN UGC 4085
     N. Bennert, University of California, Riverside; and T. N. Steele, R.
Chornock, W. Li, and A. V. Filippenko, University of California, Berkeley,
report that inspection of CCD spectra (range 330-1050 nm), obtained on Apr.
14.19 UT with the Kast spectrograph on the Shane 3-m telescope at Lick
Observatory, reveals that 2008bs (CBET 1333) is a supernova of type Ib,
probably within a week or two after maximum brightness.  P-Cyg spectral
features due to the 587.6-, 667.8-, and 706.5-nm lines of He I are present
with absorption minima blueshifted by about 8500 km/s, after removal of a
host-galaxy redshift of 7290 km/s (measured from narrow emission lines in the
spectrum).  A prominent, narrow absorption line due to Na I D at the redshift
of the host galaxy has an apparent equivalent width in excess of 0.3 nm in
these noisy low-resolution data, indicating that the object is likely to be
highly reddened.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2008 CBAT
2008 April 15                    (CBET 1338)              Daniel W. E. Green