Electronic Telegram No. 3513
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 2013bz
     P. Ochner, L. Tomasella, A. Pastorello, S. Benetti, E. Cappellaro, and M.
Turatto, Osservatorio Astronomico di Padova, Istituto Nazionale di Astrofisica,
report that an optical spectrogram (range 340-790 nm; resolution 0.9 nm),
obtained on May 4.96 UT with the Asiago 1.22-m Galileo Telescope (+ Boller &
Chivens spectrograph), shows that PSN J13265132-1001322 = SN 2013bz (cf. CBET
3507) is a peculiar type-Ia supernova.  Assuming a recessional velocity of
5745 km/s for the host galaxy (Nicolaci da Costa et al. 1998, A.J. 116, 1;
this estimate is also consistent with that inferred from the position of a
narrow H_alpha spectral emission), an expansion velocity of about 10000 km/s
is measured from the minimum of the Si II 635-nm line.  A good match is found
with the so-called "super-Chandrasekhar" type-Ia supernovae 2006gz and 2009dc
(Hichen et al. 2007, Ap.J. 669, L17; Taubenberger et al. 2011, MNRAS 412,
2735).  The Asiago classification spectra are posted at website URL
http://graspa.oapd.inaf.it.  Classification was made via GELATO (Harutyunyan
et al. 2008, A.Ap. 488, 383) and SNID (Blondin and Tonry 2007, Ap.J. 666,
1024).


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2013 CBAT
2013 May 11                      (CBET 3513)              Daniel W. E. Green