[IAUC] CBET 2895: 20111103 : SUPERNOVA 2011hl

[quai en eps.harvard.edu]

                                                  Electronic Telegram No. 2895
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)
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Prepared using the Tamkin Foundation Computer Network


SUPERNOVA 2011hl
     A. J. Drake, S. G. Djorgovski, M. J. Graham, A. Mahabal, and R. Williams,
California Institute of Technology; J. L. Prieto, Princeton University; 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 discovery of an apparent supernova
in unfiltered Catalina Sky Survey (CSS) images:

 SN       2011 UT       R.A. (2000.0) Decl.      Mag.      Offset
 2011hl   Sep. 26.30   0 01 55.69  + 6 52 35.9   19.4    52".2 W, 18".5 S

Further CSS magnitudes for 2011hl:  July 2.43 UT, [20.3; Sept. 18.45, 20.1;
Sept 19.32, 20.0.

     L. Tomasella, S. Valenti, A. Pastorello, M. Fiaschi, anD S. Benetti,
Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Padova, on
behalf of a larger collaboration, report that a low-S/N spectrogram of 2011hl
was obtained on Oct. 30.87 UT with the Ekar-Copernico 1.82-m telescope (+
AFOSC; range 380-820 nm; resolution 2.2 nm).  Cross-correlation with a library
of supernova spectra using the "Supernova Identification" code (SNID; Blondin
and Tonry 2007, Ap.J. 666, 1024) suggests that 2011hl is a type-Ia supernova
at z = 0.08, two months after maximum.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2011 CBAT
2011 November 3                  (CBET 2895)              Daniel W. E. Green