Electronic Telegram No. 2315
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@iau.org; cbatiau@eps.harvard.edu
URL http://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVA 2010cl IN MCG -02-25-20
     N. Morrell and M. Phillips, on behalf of the Carnegie Supernova Project,
report that a spectrum (range 380-940 nm) of 2010cl (cf. CBET 2266) was
obtained on May 21.0 UT with the 6.5-m Magellan II Clay telescope (+ LDSS3)
at Las Campanas Observatory, which reveals that this is a type-II supernova.
Cross-correlation with a library of supernova spectra using the Supernova
Identification Tool of Blondin and Tonry (2007, Ap.J. 666, 1024) yields good
matches with a number of type-II-P events at 1 month or more after explosion,
with 2006bp at +34 days being the best comparison.  A radial velocity of 2602
km/s is measured from narrow H II region emission at the position of the
supernova.  The minimum of the H-alpha absorption is found to be blueshifted
with respect to this velocity by roughly 7400 km/s.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2010 CBAT
2010 June 10                     (CBET 2315)              Daniel W. E. Green