Electronic Telegram No. 2511
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbatiau@eps.harvard.edu (alternate cbat@iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


SUPERNOVA 2010iw
     G. H. Marion, Harvard-Smithsonian Center for Astrophysics and University
of Texas; J. Vinko, University of Szeged; and J. C. Wheeler, University of
Texas, report that a spectrum (range 430-1000 nm) of SN 2010iw (cf. CBET 2505)
was obtained by S. Rostopchin on Oct. 19 UT with the 9.2-m Hobby-Eberly
Telescope (+ Marcario Low-Resolution Spectrograph).  Cross-correlation with a
library of supernova spectra using the "Supernova Identification" code (SNID;
Blondin and Tonry 2007, Ap.J. 666, 1024) shows that 2010iw is a peculiar
type-Ia supernova near maximum brightness.  The spectrum most closely
resembles that of SN 2000cx at maximum, but the measured velocity of Si II
(635.5 nm) for 2010iw is 10300 km/s, which is much lower than reported for SN
2000cx at this epoch by Li et al. (2003, PASP 115, 453).


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2010 CBAT
2010 October 20                  (CBET 2511)              Daniel W. E. Green