Electronic Telegram No. 4208
Central Bureau for Astronomical Telegrams
Mailing address:  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 2015az IN IC 290 = PSN J03094251+4058293
     R. Gagliano, R. Post, J. Newton, and T. Puckett report the discovery of
an apparent supernova (mag 17.6) on unfiltered CCD images (limiting mag 19.0)
taken with a 0.60-m reflector near Meadow Lakes, CA, U.S.A., on Nov. 30.360
UT in the course of the Puckett Observatory Supernova Search.  The new object
is located at R.A. = 3h09m42s.51, Decl. = +40o58'29".3 (equinox J2000.0),
which is 1".4 west and 0".7 north of the center of IC 290.  A finding image
was posted at website URL http://possdata.com/PSNJ03094251+4058293.jpg.  The
variable was designated PSN J03094251+4058293 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2015az based on the
spectroscopic confirmation reported below.

     L. Tomasella, S. Benetti, E. Cappellaro, N. Elias-Rosa, P. Ochner, A.
Pastorello, L. Tartaglia, G. Terreran, and M. Turatto, Osservatorio
Astronomico di Padova, Istituto Nazionale di Astrofisica, report that an
optical spectrogram (range 340-820 nm; resolution 1.4 nm) of PSN
J03094251+4058293 = SN 2015az, obtained on Nov. 30.99 UT with the Asiago
182-cm Copernico Telescope (+ AFOSC) in the framework of the Asiago Transient
Classification Program (Tomasella et al. 2014, A.N. 335, 841), shows that
2015az is a type-Ia supernova, about one week before maximum light.  The
expansion velocity, as deduced from the position of the minimum of the Si II
635-nm line, is about 13600 km/s.  The redshift adopted for the galaxy IC
290 = UGC 2561 (z = 0.02) is from Huchra et al. (1999, Ap.J. Suppl. 121, 287).
Classifications were done with GELATO (Harutyunyan et al. 2008, A.Ap. 488,
383) and SNID (Blondin and Tonry 2007, Ap.J. 666, 1024).  The Asiago
classification spectra are posted at website URL http://sngroup.oapd.inaf.it.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2015 CBAT
2015 December 2                  (CBET 4208)              Daniel W. E. Green