[IAUC] CBET 2912: 20111123 : SUPERNOVA 2011ic = PSN J10153321-2034060

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                                                  Electronic Telegram No. 2912
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 2011ic = PSN J10153321-2034060
     J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, R. Cartier, F. Forster, S.
Silva, F. Carrasco, P. Sanchez, C. Hervias, and R. Ramirez, Universidad de
Chile; G. Pignata, M. Cifuentes, Y. Apostolovski, and M. Vidal, Universidad
Andres Bello; C. Farias and F. Aros, Pontificia Universidad Catolica de
Chile; B. Conuel, Wesleyan University; G. Folatelli, IPMU, University of
Tokyo; and D. Reichart, K. Ivarsen, J. Haislip, A. Crain, D. Foster, M.
Nysewander, and A. LaCluyze, University of North Carolina at Chapel Hill, on
behalf of the CHASE project (which is part of the Millennium Center for
Supernova Science collaboration), report the discovery of an apparent
supernova (mag approximately 16.0) on unfiltered images taken on Nov. 18.30
and 20.33 UT with the 0.41-m 'PROMPT 5' telescope located at Cerro Tololo.
The new object is located at R.A. = 10h15m33s.21 +/- 0".2, Decl. =
-20o34'06".0 +/- 0".2 (equinox 2000.0), which is about 7".5 east and 55".4
north of the center of the presumed host galaxy.  Nothing is visible at this
position on archival images taken on May 15.98 (limiting mag 18.5).  The
variable was designated PSN J10153321-2034060 when it was posted on the
Central Bureau's TOCP webpage and is here designated SN 2011?? based on the
spectroscopic confirmation reported below.

     M. Stritzinger, Oskar Klein Centre, Stockholm University, on behalf of
the Millennium Center for Supernova Science, reports that he obtained a
spectrogram on May 21.2 UT of PSN J10153321-2034060 = SN 2011ic with the
Gemini-South telescope (+ GMOS).  The spectrum reveals 2011?? to be a type-Ia
supernova around a month past maximum.  Comparison with a library of supernova
spectra using the SNID program (Blondin and Tonry 2007, Ap.J. 666, 1024)
provides excellent matches with SN 2002bo between 40 and 50 days past maximum.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2011 CBAT
2011 November 23                 (CBET 2912)              Daniel W. E. Green