Electronic Telegram No. 2175
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Room 209; Dept. of Earth and Planetary
 Sciences; Harvard University; 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbat@cfa.harvard.edu; dwe_green@eps.harvard.edu
URL http://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVAE 2009lj AND 2009lw
     J. M. Silverman, S. B. Cenko, and A. V. Filippenko, University of
California, Berkeley, report that inspection of CCD spectra (range 450-960
nm), obtained on Feb. 15 UT with the 10-m Keck II telescope (+ DEIMOS), shows
that 2009lj (CBET 2027) is a type-Ic supernova.  Cross-correlation with a
library of supernova spectra using the "SuperNova IDentification" code of
Blondin and Tonry (2007, Ap.J. 666, 1024) indicates that 2009lj is a few
months past maximum brightness.  SN 2009lw (CBET 2047) is a type-Ib or
possibly a type-IIb supernova, also a few months past maximum light.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2010 CBAT
2010 February 15                 (CBET 2175)              Daniel W. E. Green