Electronic Telegram No. 4061
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 2013hy
     M. Sullivan, University of Southampton; and A. Papadopoulos, C. B.
D'Andrea, and R. C. Nichol, Institute of Cosmology and Gravitation,
Portsmouth, on behalf of the Dark Energy Survey (DES; Flaugher et al. 2005,
Int. J. Mod. Phys. A 30, 3121), report the discovery of a supernova (r
magnitude about 22.9, AB system) on g-, r-, i-, and z-band CCD images
(limiting r mag 24.5) taken on 2013 Aug. 30 UT with the 4-m Blanco
telescope (+ DECam) at the Cerro Tololo Inter-American Observatory in the
course of the DES Supernova Survey (Bernstein et al. 2012, Ap.J. 753, 152).
The variable is located at R.A. = 2h42m32s.82, Decl. = -1d21'30".1 (equinox
2000.0).  The object was not detected during DES search operations during
Nov./Dec. 2012 (limiting r magnitude 24.5).
     Optical spectroscopy (range 595-940 nm), obtained on 2013 Nov. 21 UT
with the European Southern Observatory Very Large Telescope (+ FORS2),
showed that the variable was a hydrogen-free superluminous supernova of type
I or Ic at redshift z = 0.663.  The classification was made via SUPERFIT
(Howell et al. 2005, Ap.J. 634, 1180).


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2015 CBAT
2015 January 27                  (CBET 4061)              Daniel W. E. Green