[IAUC] CBET 2718: 20110511 : SUPERNOVA 2011ch

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                                                  Electronic Telegram No. 2718
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 2011ch
     A. J. Drake, S. G. Djorgovski, A. Mahabal, M. J. Graham, and R. Williams,
California Institute of Technology; J. L. Prieto, Carnegie Observatories;
M. Catelan, Pontificia Universidad Catolica de Chile; E. C. Beshore and S. M.
Larson, Lunar and Planetary Laboratory, University of Arizona; and E.
Christensen, Gemini Observatory, report the Catalina Real-time Transient
Survey's discovery of an apparent supernova in unfiltered Catalina Sky Survey
images:

 SN       2011 UT        R.A. (2000.0) Decl.      Mag.      Offset
 2011ch   Apr. 27.21   13 02 54.31  +49 52 29.1   16.1       1" E

     G. H. Marion, Harvard-Smithsonian Center for Astrophysics (CfA), on
behalf of the CfA Supernova Group, report that a spectrum (range 340-740 nm)
of 2011ch was obtained on May 5 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 2011ch is a type-Ia supernova at
three to four weeks after maximum light.


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                         (C) Copyright 2011 CBAT
2011 May 11                      (CBET 2718)              Daniel W. E. Green