Electronic Telegram No. 3862
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 2014at IN NGC 7119 = PSN J21461482-4631211
     Stuart Parker, Canterbury, New Zealand, reports the discovery of an
apparent supernova (red mag 16.3) on a 30-s unfiltered CCD image (limiting mag
18.5) taken by himself on Apr. 20.719 UT with a 30-cm Astro-Tech AT12RC
Ritchey-Chretien astrograph (+ ST10 camera) at his Parkdale Observatory in the
course of the Backyard Observatory Supernova Search.  The new object is
located at R.A. = 21h46m14s.82, Decl. = -46d31'21".1 (equinox 2000.0;
reference stars from USNO-B and UCAC4 catalogues), which is 7" west and 16"
south of the nucleus of the galaxy NGC 7119.  Nothing is visible at this
position on Digitized Sky Survey red and infrared images (limiting red mag >
19).  An image of the variable is viewable at URL http://tinyurl.com/lx5wcbh.
The variable was designated PSN J21461482-4631211 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2014at based on the
spectroscopic confirmation reported below.  S. Howerton, Arkansas City, KS,
U.S.A., measured magnitude V = 16.4 +/- 0.2 from an image with taken with an
iTelescope 0.32-m telescope at Siding Spring; his image is posted at website
URL https://www.flickr.com/photos/watchingthesky/13958252304/.

     S. Benitez, Max-Planck-Institut fuer Astrophysik; J. Polshaw, M. Nicholl,
and S. J. Smartt, Queen's University, Belfast (QUB); M. Fraser, Institute of
Astronomy; N. Elias-Rosa, Osservatorio Astronomico di Padova (OAP), Istituto
Nazionale di Astrofisica (INAf), and Institut de Ciencies de l'Espai, IEEC,
Consejo Superior de Investigaciones Cientificas, Barcelona; J. Anderson,
Universidad de Chile; S. Benetti and A. Pastorello, Osservatorio Astronomico
di Padova, INAf; C. Inserra, K. Smith, and D. Young, QUB; M. Sullivan,
University of Southampton; S. Valenti, Las Cumbres Observatory Global
Telescope; O. Yaron and A. Gal-Yam, Weizmann Institute for Science; C. Knapic,
R. Smareglia, and M. Molinaro, Trieste Astronomical Observatory; and I.
Manulis, Weizmann Institute for Science, on behalf of the Public European
Southern Observatory (ESO) Spectroscopic Survey for Transient Objects (PESSTO;
see website URL http://www.pessto.org), report that they obtained a
spectrogram of PSN J21461482-4631211 = SN 2014at on Apr. 20 UT with the
European Southern Observatory's New Technology Telescope at La Silla, using
EFOSC2 with Grism 13 (range 398.5-931.5 nm; 1.8-nm resolution).  Cross-
correlation of the spectrum with a library of template spectra using SNID
(Blondin and Tonry 2007, Ap.J. 666, 1024) gives a best match to several normal
type-Ia supernovae at a redshift of around z = 0.035 and approximately one
week before maximum light.


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

                         (C) Copyright 2014 CBAT
2014 April 27                    (CBET 3862)              Daniel W. E. Green