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. = -34°16'26".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.
NOTE: These 'Central Bureau Electronic
Telegrams' are sometimes superseded by text appearing
later in the printed IAU Circulars.
