Electronic Telegram No. 3822
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 2014Z IN ESO 114-G4 = PSN J01440799-6107074
     Stuart Parker, Canterbury, New Zealand, reports the discovery of an
apparent supernova (red mag 15.2) on a 30-s unfiltered CCD image (limiting
mag 19) taken on Mar. 6.395 UT with a 35-cm Celestron C14 reflector (+ ST10
camera) at his Parkdale Observatory in the course of the Backyard Observatory
Supernova Search.  The new object is located at R.A. = 1h44m07s.99, Decl. =
-61d07'07".4 (equinox 2000.0; reference stars from USNO-B and UCAC4
catalogues), which is 6" east and 16" north of the nucleus of the galaxy ESO
114-G4.  Nothing is visible at this position on Digitized Sky Survey red and
infrared images (limiting red magnitude > 19).  An image of the new variable
can be viewed via website URL http://tinyurl.com/lrn4773.  The variable was
designated PSN J01440799-6107074 when it was posted at the Central Bureau's
TOCP webpage and is here designated SN 2014Z based on the spectroscopic
confirmation reported below.

     Y. Cao, California Institute of Technology; M. Kasliwal, Carnegie
Observatories; E. Y. Hsiao, C. Gonzalez, M. M. Phillips, and N. Morrell, Las
Campanas Observatory; and C. Contreras, Aarhus University, report that a
near-infrared spectrogram (range 800-2500 nm) of PSN J01440799-6107074 = SN
2014Z was obtained on Mar. 8.02 UT using the FoldedPort Infrared Echellette
(FIRE) spectrograph on the 6.5-m Magellan Baade Telescope, showing that 2014Z
is a type-Ia supernova.  The spectrum resembles the near-infrared spectrum of
SN 2011fe at maximum (Hsiao et al. 2013, Ap.J. 766, 72).  The supernova
redshift approximately matches the redshift of the presumed host galaxy (ESO
114-G4) at z = 0.021275 (Muriel et al. 1995, A.J. 110, 1032; via NED).  Two
optical photometric observations taken with the 1-m Swope Telescope on Mar.
7.01 and Mar. 8.00 show that the supernova declined slightly from V = 15.63
to 15.64, consistent with a type-Ia supernova near maximum light.

     N. Blagorodnova, N. Walton, and M. Fraser, Institute of Astronomy; M.
Dennefeld, Institut Astrophysique de Paris; S. Taubenberger, Max-Planck-
Institut fuer Astrophysik, Garching; S. Benetti and A. Pastorello,
Osservatorio Astronomico di Padova, Istituto Nazionale di Astrofisica (INAF);
C. Inserra, S. Smartt, K. Smith, and D. Young, Queen's University, Belfast; 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, INAF;
and I. Manulis, Weizmann Institute for Science, report that a spectrogram
(range 398.5-931.5 nm; resolution 1.8 nm) of PSN J01440799-6107074 = SN 2014Z
was obtained on Mar. 8 with the 3.6-m New Technology Telescope (+ EFOSC2 and
Grism 13) at La Silla.  Cross-correlation of the spectrum with a library of
supernovae template spectra using SNID (Blondin and Tonry 2007, Ap.J. 666,
1024) gives good matches to a range of normal type-Ia supernovae a few days
after maximum light at z = 0.02.


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

                         (C) Copyright 2014 CBAT
2014 March 10                    (CBET 3822)              Daniel W. E. Green