[IAUC] CBET 2773: 20110725 : SUPERNOVA 2011ee IN NGC 7674 = PSN J23275734+0846381

[quai en eps.harvard.edu]

                                                  Electronic Telegram No. 2773
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 en eps.harvard.edu (alternate cbat en iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


SUPERNOVA 2011ee IN NGC 7674 = PSN J23275734+0846381
     M. Miluzio, Padua University; S. Benetti, M. T. Botticella, E. Cappellaro,
P. Ochner, S. Valenti, Osservatorio Astronomico di Padova, Istituto Nazionale
di Astrofisica (INAF); and F. Bufanom INAF, Osservatorio Astronomico di
Catania, report their discovery of a supernova in the course of the European
Southern Observatory's Infrared Supernova Search in Starburst Galaxies
performed with the HAWK-I instrument at the Very Large Telescope.  The new
object was detected on a K-band image obtained on 2011 June 27.34 UT at
magnitude K = 18.6 (limiting K mag 20) and is located at R.A. = 23h27m57s.341,
Decl. = +08d46'38".10 (equinox 2000.0) which is 9".3 east and 6".3 south of
the center of NGC 7674.  Nothing is visible at this position on a K-band image
taken on 2010 Sept. 7.14 (limiting K mag 21).  The variables was designated
PSN J23275734+0846381 when posted on the Central Bureau's TOCP webpage and is
here designated SN 2011ee based on the spectroscopic report below.  Additional
magnitudes for 2011ee:  July 10.07, 18.5 (Miluzio et al.; r-band magnitude;
Liverpool telescope, location unspecified); 14.02, 19.0 (Miluzio et al.;
r-band magnitude; Asiago 67/92 Schmidt telescope); 16.394, 17.7 (Joseph
Brimacombe, Cairns, Australia; red magnitude; position end figures 57s.34,
37".5; image posted at http://www.flickr.com/photos/43846774@N02/5944827310/);
17.444, 17.5 (Brimacombe); 18.393, 17.8 (Brimacombe; image posted at website
URL http://www.flickr.com/photos/43846774@N02/5952394911/); 21.461, 18.3
(Brimacombe; unfiltered CCD magnitude); 22.688, 18.3 (Brimacombe; red
magnitude).
     An optical spectrum was obtained by Miluzio et al. with the Very Large
Telescope (+ XShooter) at Paranal (ESO) on 2011 July 17.25 UT (range
340-1000 nm, resolution 0.02 nm) showing that the 2011ee is a type-Ic
supernova.  The GELATO code (Harutyunyan et al. 2008, A.Ap. 488, 383;
available at website URL https://gelato.tng.iac.es/login.cgi) gives a best
match with typical type-Ic supernova at a mean phase of about 10 days
after maximum.


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

                         (C) Copyright 2011 CBAT
2011 July 25                     (CBET 2773)              Daniel W. E. Green