Electronic Telegram No. 3804
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 2014O IN ESO 263-G4 = PSN J10064753-4741285
     Stuart Parker, Canterbury, New Zealand; and Dan Milisavljevic and Maria
Drout, Harvard-Smithsonian Center for Astrophysics, report the discovery of an
apparent supernova (red mag 16.0) on a 30-s unfiltered CCD image (limiting mag
19) taken by Parker on Feb. 2.526 UT with a 30-cm Astro-Tech AT12RC Ritchey-
Chretien astrograph (+ ST10 camera) at the Parkdale Observatory in the course
of the Backyard Observatory Supernova Search.  The new object is located at
R.A. = 10h06m47s.53, Decl. = -47d41'28".5 (equinox 2000.0; reference stars
from USNO-B and UCAC4 catalogues), which is 14" east and 18" north of the
nucleus of the galaxy ESO 263-G4.  Nothing is visible at this position on
Digitized Sky Survey red and infrared images (limiting red magnitude > 19).
An image of the new object is posted at URL http://tinyurl.com/n8x34pd.  The
variable was designated PSN J10064753-4741285 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2014O based on the
spectroscopic confirmation reported below.

     D. Milisavljevic and M. R. Drout, Harvard-Smithsonian Center for
Astrophysics, report that a low-dispersion spectrogram (range 424-940 nm),
obtained on Feb. 4.2 UT with the 6.5-m Magellan Baade telescope (+ IMACS),
shows PSN J10064753-4741285 = SN 2014O to be a type-II supernova.  Cross-
correlation with a library of supernova spectra using the "Supernova
Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows a
reasonable match with the type-IIP event 2004et around the time of maximum
light.  Using a redshift of z = 0.013 for the host galaxy, ESO 263-G4
(Kraan-Kortweg et al. 1995, A.Ap. 297, 617; via NED), they estimate the
minimum of the H_beta P-Cyg absorption to be blueshifted by approximately
9500 km/s.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2014 CBAT
2014 February 14                 (CBET 3804)              Daniel W. E. Green