[IAUC] CBET 3947: 20140830 : SUPERNOVA 2014ci = PSN J22340480+6826240

[quai en eps.harvard.edu]

                                                  Electronic Telegram No. 3947
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 2014ci = PSN J22340480+6826240
     P. Campaner reports the discovery of an apparent supernova (magnitude
17.2) on unfiltered CCD images (limiting magnitude 19.0) obtained on July
16.035 UT with a 0.4-m telescope (+ Atik 428ex camera) at Ponte di Piave,
Italy, in the course of the Italian Supernovae Search Project.  The new object
is located at R.A. = 22h34m04s.80, Decl. = +68d26'24".0 (equinox 2000.0),
which is 2" east and 4" south of the center of the galaxy PGC 166758.  The
variable was designated PSN J22340480+6826240 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2014ci based on the
spectroscopic confirmation reported below.  G. Masi writes that his unfiltered
exposures taken on July 17.97 with a 43-cm telescope at Ceccano, Italy, yield
mag 16.3 for 2014ci, for which he measured position end figures 04s.26, 26s.7.

     L. Tomasella, S. Benetti, A. Pastorello, E. Cappellaro, N. Elias-Rosa, P.
Ochner, and M. Turatto report that an optical spectrogram (range 340-820 nm;
resolution 1.3 nm) of PSN J22340480+6826240 = SN 2014ci, obtained on July
18.95 UT with the Asiago 182-cm Copernico Telescope (+ AFOSC) under the Asiago
Transient Classification Program (Tomasella et al. 2014, as posted at URL
http://arxiv.org/abs/1403.7233), shows that this is a normal type-Ia
supernova.  Assuming a recessional velocity of 4355 km/s (Paturel et al. 2003,
A.Ap. 412, 57; via NED) for the host galaxy, PGC 166758, a good match is found
with several type-Ia supernovae about three weeks after B-band maximum light.
An expansion velocity of 9300 km/s is derived from the minimum of the Si II
635-nm line.  The Asiago classification spectrum is posted at website URL
http://sngroup.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      superseded by text appearing later in the printed IAU Circulars.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 2014 CBAT
2014 August 30                   (CBET 3947)              Daniel W. E. Green