Electronic Telegram No. 2765
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 2011ec IN PGC 69507 = PSN J22413750-5736080
     L. A. G. Monard, Calitzdorp, Western Cape, South Africa, reports his
discovery of an apparent supernova (mag 17.0) on unfiltered CCD images taken
on May 14.124 and 14.974 UT.  The new object is located at R.A. = 22h41m37s.57,
Decl. = -57d36'08".8 (equinox 2000.0), which is 6" east and 10" north of the
core of the galaxy PGC 69507 = ESO 147-5.  Nothing is visible at this position
on Monard's images taken in 2010 (limiting magnitude 18.5 and deeper) or on
the Digitized Sky Survey (limiting red mag 20.5).  The variable was designated
PSN J22413750-5736080 when posted on the Central Bureau's TOCP webpage and is
here designated SN 2011ec based on the spectroscopic report below.  Additional
magnitudes reported for 2011ec:  2011 Mar. 30.158, [18.0 (Monard); May 14.804,
17.2 (Joseph Brimacombe, Coral Towers Observatory, Cairns, Australia; 30-cm
telescope + STL6K camera + red filter; position end figures 37s.59, 07".9).
Brimacombe's image is posted at the following website URL:
http://www.flickr.com/photos/43846774@N02/5720425783/.

     D. Milisavljevic and R. Fesen, Dartmouth College; K. Nordsieck, University
of Wisconsin; and T. Pickering and D. O'Donoghue, South African Astronomical
Observatory, on behalf of a larger SALT Commissioning Team, report that
low-dispersion spectra (range 430-740 nm), obtained on July 13.2 UT with the
10-m SALT telescope (+ RSS), show PSN J22413750-5736080 = SN 2011ec to be a
type-Ia supernova.  Cross-correlation with a library of supernova spectra
using the "Supernova Identification" code (SNID; Blondin and Tonry 2007,
Ap.J. 666, 1024) shows matches with normal type-Ia events such as SN 2002bo
and 2004eo around two months after maximum light.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2011 CBAT
2011 July 15                     (CBET 2765)              Daniel W. E. Green