[IAUC] CBET 2927: 20111201 : SUPERNOVA 2011il

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                                                  Electronic Telegram No. 2927
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 2011il
     Pavel Balanutsa and Vladimir Lipunov, on behalf of the MASTER team,
report the discovery of an optical transient (mag 17.0) on eleven unfiltered
CCD images (limiting mag 19.5) obtained on Nov. 20.03 UT.  The new object is
located at R.A. = 7h35m08s.62, Decl. = +19d11'26".1 (equinox 2000.0, presumed).
Nothing is visible at this position on a reference image from Dec. 9.82 (year
2010 presumed) to a limiting magnitude of 19.2.  The variable is designated
SN 2011il based on the spectroscopic confirmation reported below.

     G. H. Marion, Harvard-Smithsonian Center for Astrophysics (CfA), on
behalf of the CfA Supernova Group, reports that a spectrum (range 340-740 nm)
of 2011il was obtained on Nov. 26 UT by P. Berlind with the F. L. Whipple
Observatory 1.5-m telescope (+ FAST).  Cross-correlation with a library of
supernova spectra using the "Supernova Identification" code (SNID; Blondin and
Tonry 2007, Ap.J. 666, 1024) shows that 2011il is a type-Ia supernova about
one month after maximum light.  A good fit is found to the template of the
normal type-Ia supernova 2001gc at +31 days.


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                         (C) Copyright 2011 CBAT
2011 December 1                  (CBET 2927)              Daniel W. E. Green