Electronic Telegram No. 3281
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 2012fv IN IC 4815 = PSN J19065165-6142163
     Alain Klotz, Institut de Recherche en Astrophysique et Planetologie
(IRAP), Toulouse, on behalf of the TAROT collaboration, reports his discovery
of an apparent supernova (mag 19.6 +/- 0.1) on public R-band images taken on
June 20.36 UT with the 0.25-m TAROT robotic telescope at La Silla, Chile.  The
new object is located at R.A. = 19h06m51s.65, Decl. = -61o42'16".3 (equinox
2000.0), which is 6" east and 12" south of the nucleus of IC 4815.  Klotz has
posted details at URL http://cador.obs-hp.fr/sn_tarot/PSN_J19065165-6142163/.
The variable was designated PSN J19065165-6142163 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2012fv based on the
spectroscopic confirmation reported below.  SN 2011fm also appeared in this
galaxy (CBET 2807).  Additional CCD magnitudes for 2012fv:  June 8.34, [19
(Klotz); 26.34, R = 17.6 (Klotz); 29.708, 16.9 (Joseph Brimacombe, Cairns,
Australia; 41-cm RCOS telescope + STL6K camera + infrared filter filter;
bandpass > 700 nm; position end figures 51s.57, 17".9; image posted at website
URL http://www.flickr.com/photos/43846774@N02/7474411924/); July 1.279, 16.9
(Brimacombe; position end figures 51s.60, 18".5; image posted at website URL
http://www.flickr.com/photos/43846774@N02/7499223994/); 2.16, R = 17.2
(Klotz); 8.15, 17.3 (Klotz); 26.616, 17.3 (Brimacombe; position end figures
51s.49, 17".6).  Brimacombe's July 26 image is posted at the following URL:
http://www.flickr.com/photos/43846774@N02/7658790172/.

     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 J19065165-6142163 = SN 2012fv is a
type-Ia supernova at redshift z = 0.028; the best fit is to the spectra of
many old type-Ia supernovae.  PESSTO classification spectra can be obtained
from website 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 3281)              Daniel W. E. Green