Electronic Telegram No. 3460
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 2011ke
     A. J. Drake, S. G. Djorgovski, A. A. Mahabal, M. J. Graham, R. Williams,
and C. Donalek, California Institute of Technology; J. Prieto, Carnegie
Observatories; M. Catelan, Pontificia Universidad Catolica de Chile; and S. M.
Larson and E. Christensen, Lunar and Planetary Laboratory, University of
Arizona, report the Catalina Real-time Transient Survey discovery of an
apparent supernova in V-band Catalina Sky Survey (CSS) images:

    SN       2011 UT        R.A. (2000.0) Decl.       Mag.
    2011ke   Apr. 25.4   13 50 57.78  +26 16 42.4     17.6

Nothing is visible at this position on a CSS image from 2011 Mar. 16 UT
(limiting mag 19.5).

     C. Inserra, S. J. Smartt, M. Fraser, D. Young, K. Smith, D. Wright, R.
Kotak, M. McCrum, L. Magill, and T.-W. Chen, Queen's University, Belfast; A.
Pastorello and S. Benetti, Osservatorio Astronomico di Padova, Istituto
Nazionale di Astrofisica; S. Valenti, Las Cumbres Observatory Global Telescope
and University of California at Santa Barbara; F. Bresolin, R. Kudritzki, J.
Tonry, E. Magnier, M. Huber, K. Chambers, N. Kaiser, J. Morgan, W. Burgett, J.
Heasley, W. Sweeney, C. Waters, and H. Flewelling, University of Hawaii; C.
Stubbs, Harvard University; P. A. Price, Princeton University; J. Sollerman,
F. Taddia, and M. Ergon, Oscar Klein Centre, Stockholm; G. Leloudas, Dark
Cosmology Centre, Copenhagen; and S. Taubenberger, Max-Planck-Institut fuer
Astrophysik, Garching, report that they obtained a spectrogram of 2011ke on
2011 May 21 UT with the Telescopio Nazionale Galileo (+ DOLORES).  The
spectrum shows the clear presence of emission from the host galaxy of [O II],
[O III], H-beta, and H-alpha.  (The host galaxy is also clearly seen in images
obtained via the Canada-France-Hawaii Telescope and the Sloan Digital Sky
Survey.)  A good match is obtained with the spectrum of SN 2010gx (cf. CBET
2413), a super-luminous type-Ic supernova, at a week after maximum light.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2013 CBAT
2013 April 10                    (CBET 3460)              Daniel W. E. Green