[IAUC] CBET 3347: 20121221 : SUPERNOVA 2012hs IN ESO 213-2 = PSN J09491471-4754456

[quai en eps.harvard.edu]

                                                  Electronic Telegram No. 3347
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 2012hs IN ESO 213-2 = PSN J09491471-4754456
     M. Cifuentes, G. Pignata, and Y. Apostolovski, Universidad Andres Bello;
P. Sanchez, M. Hamuy, R. Antezana, L. Gonzalez, R. Cartier, F. Forster, S.
Silva, F. Carrasco, C. Hervias, and R. Ramirez, Universidad de Chile; 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 14.5) on unfiltered image taken
on Dec. 15.18 and 16.16 UT with the 0.41-m 'PROMPT 5' telescope located at
Cerro Tololo.  The new object is located at R.A. = 9h49m14s.71 +/- 0".2, Decl.
= -47o54'45".6 +/- 0".2 (equinox 2000.0), which is about 18".3 west and 26".9
north of center of the galaxy ESO 213-2.  Nothing is visible at this position
on archival images taken on Dec. 11.28 (limiting mag 18.5).  The variable was
designated PSN J09491471-4754456 when it was posted at the Central Bureau's
TOCP webpage and is here designated SN 2012hs based on the spectroscopic
confirmation reported below.

     D. Milisavljevic, Harvard-Smithsonian Center for Astrophysics (CfA); R.
Fesen, Dartmouth College; T. Pickering and D. Buckley, South African
Astronomical Observatory and Southern African Large Telescope; and A.
Soderberg and R. Margutti, CfA, report that low-dispersion spectra (range
330-890 nm), obtained Dec. 18 and 19 UT with the 10-m SALT telescope (+ RSS),
show PSN J09491471-4754456 = SN 2012hs to be a very young type-II supernova.
Broad P-Cyg absorptions are observed over a strong blue continuum.  After
removal of the host-galaxy (ESO 213-2) redshift of z = 0.006424 (via NED;
HIPASS 2006), the minimum of the H_alpha, H_beta, and Na I D features have
blueshifted velocities of approximately 15000 km/s.


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                         (C) Copyright 2012 CBAT
2012 December 21                 (CBET 3347)              Daniel W. E. Green