Electronic Telegram No. 3280
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@eps.harvard.edu (alternate cbat@iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


SUPERNOVA 2012fu IN ESO 55-28 = PSN J04371913-6908254
     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, and Y. Apostolovski, Universidad Andres
Bello; 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 17.5) on an
unfiltered image taken on Aug. 27.25 UT with the 0.41-m 'PROMPT 3' telescope
located at Cerro Tololo.  The new object, which was also visible at mag about
17.4 in a CHASE image from Aug. 28.32, is located at R.A. = 4h37m19s.13 +/-
0".2, Decl. = -69o08'25".4 +/- 0".2 (equinox 2000.0), which is about 1".1
east and 8".2 north of center of the galaxy ESO 55-28.  Nothing is visible
at this position in a stack of twelve 40-s archival images taken between
2011 Sept. 11.21 and 2012 July 27.34 (limiting mag 20.2).  The variable was
designated PSN J04371913-6908254 when it was posted at the Central Bureau's
TOCP webpage and is here designated SN 2012fu based on the spectroscopic
confirmation reported below.

     C. Inserra, S. J. Smartt, M. Fraser, D. Young, and K. Smith, Queen's
University, Belfast; F. Cellier-Holzem and P. El-Hage, Laboratoire de Physique
Nucleaire et de Hautes Energies, Paris; Y.-C. Pan, University of Oxford; M.
Sullivan, University of Southampton; I. Arcavi, A. Gal-Yam, and O. Yaron,
Wiezmann Institute of Science; S. Benetti, A. Pastorello, and S. Valenti,
Istituto Nazionale di Astrofisica, Padova; and S. Taubenberger, A. Sternberg,
and S. Benitez-Herrera, Max-Planck-Institute fuer Astrophysik, Garching, on
behalf of the PESSTO collaboration (see Valenti et al., posted at website URL
http://www.astronomerstelegram.org/?read=4037), report that optical
spectroscopy (range 360-910 nm), obtained on Sept. 16 with the New Technology
Telescope (+ EFOSC2), show that PSN J04371913-6908254 = SN 2012fu is a
type-Ia supernova 30 days past explosion at redshift z = 0.059.  PESSTO
classification spectra can be obtained from URL http://www.pessto.org/;
classification is made via SNID (Blondin and Tonry 2007, Ap.J. 666, 1024) and
GELATO (Harutyunyan et al. 2008, A.Ap. 488, 383).


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2012 CBAT
2012 November 1                  (CBET 3280)              Daniel W. E. Green