[IAUC] CBET 2692: 20110410 : SUPERNOVA 2011bj = PSN J20522450-3335540

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                                                  Electronic Telegram No. 2692
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 2011bj = PSN J20522450-3335540
     J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, R. Cartier, F. Forster, S.
Silva, F. Carrasco, P. Sanchez, C. Hervias, and D. Iturra, Universidad de
Chile; G. Pignata and M. Cifuentes, Universidad Andres Bello; C. Farias,
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 17.6) on an unfiltered images
taken on Apr. 3.37 and 4.40 UT with the 0.41-m 'PROMPT 3' telescope located
at Cerro Tololo.  The new object (which was designated PSN J20522450-3335540
when posted on the Central Bureau's TOCP webpage and is here designated SN
2011bj due to the spectroscopic report below) is located at R.A. =
20h52m24s.51 +/- 0".2, Decl. = -33o35'54".1 +/- 0".2 (equinox 2000.0), which
is about 8".9 west and 12".5 north of center of the presumed host galaxy.
Nothing is visible at this position on archival images taken on 2010 Oct.
11.14 and 24.10 (limiting mag 18.5).

     N. Morrell, Las Campanas Observatory; P. Lira, Universidad de Chile; and
G. Pignata, Universidad Andres Bello, on behalf of the Millennium Center for
Supernova Science, report optical spectroscopy (range 360-920 nm) of PSN
J20522450-3335540 = SN 2011bj obtained on Apr. 6.3 UT with the Las Campanas
2.5-m du Pont telescope (+ WFCCD).  Cross-correlation with a library of
supernova spectra using the "Supernova Identification" code (SNID; Blondin
and Tonry 2007, Ap.J. 666, 1024) shows that 2011bj is a type-IIP supernova
about a month after explosion.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2011 CBAT
2011 April 10                    (CBET 2692)              Daniel W. E. Green