[IAUC] CBET 2904: 20111118 : SUPERNOVA 2011hu IN PGC 19254 = PSN J06334085-3416267

Jue Nov 17 17:30:52 ART 2011

                                                  Electronic Telegram No. 2904
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 2011hu IN PGC 19254 = PSN J06334085-3416267
     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 17.4) on an unfiltered image taken on Nov. 6.29 UT with the
0.41-m 'PROMPT 1' telescope located at Cerro Tololo.  The new object is
located at R.A. = 6h33m40s.85 +/- 0".2, Decl. = -34o16'26".7 +/- 0".2 (equinox
2000.0), which is about 8".7 west and 8".9 south of center of the galaxy
PGC 19254 = ESO 365-29.  The variable was designated PSN J06334085-3416267
when it was posted at the Central Bureau's TOCP webpage and is here designated
SN 2011hu based on the spectroscopic confirmation reported below.  Additional
CCD magnitudes for 2011hu:  2010 Mar. 11.15, [18.5 (CHASE); 2011 Oct. 22.28,
[18.0 (CHASE); Nov. 8.18, 17.2 (CHASE); 13.583, 17.8 (J. Brimacombe, Cairns,
Australia; infrared filter, wavelength > 700 nm; position end figures 40s.96,
26".8; image posted at http://www.flickr.com/photos/43846774@N02/6341667615/).

     J. Anderson and T. De Jaeger, Universidad de Chile; and G. Pignata,
Universidad de Andres Bello, on behalf of the Millennium Center for Supernova
Science, report on optical spectroscopy (range 390-910 nm) of PSN
J06334085-3416267 = SN 2011hu that was obtained on Nov. 15.3 UT with the
Magellan II Clay 6.5-m telescope (+ LDSS3) at Las Campanas Observatory.
Cross-correlation with a library of supernova spectra using the "Supernova
Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) gives
best matches with the peculiar type-Ia supernova 1991bg, a few weeks past
maximum.


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                         (C) Copyright 2011 CBAT
2011 November 18                 (CBET 2904)              Daniel W. E. Green