Electronic Telegram No. 3905
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 2014bt IN IC 5128 = PSN J21431113-3858058
     S. Parker, Canterbury, New Zealand, reports the discovery of an apparent
supernova (red mag 16.2) on a 30-s unfiltered CCD image (limiting mag 18.5)
taken by himself on May 31.559 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. = 21h43m11s.13, Decl. = -38d58'05".8 (equinox 2000.0; reference stars
from USNO-B and UCAC4 catalogues), which is 8" west and 1" north of the
nucleus of the galaxy IC 5128.  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 via URL http://tinyurl.com/kwhtlsv.  The
variable was designated PSN J21431113-3858058 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2014bt based on the
spectroscopic confirmation reported below.  Additional CCD magnitudes for
2014bt:  June 6.654, 16.8 (J. Brimacombe, Cairns, Australia; remotely using
a 41-cm RCOS telescope + U9000 camera + luminance filter at the Warrumbungle
Observatory, Siding Spring; position end figures 11s.13, 06".1; image posted
at website URL https://www.flickr.com/photos/43846774@N02/14185666869/);
7.656, 16.7 (Brimacombe; position end figures 11s.14, 06".7).

     G. H. Marion, University of Texas at Austin and Harvard-Smithsonian
Center for Astrophysics (CfA); E. Y. Hsiao, Aarhus University; R. P. Kirshner,
CfA; C. Gall and M. D. Stritzinger, Aarhus University; and C. Contreras, N.
Morrell, and M. M. Phillips, Las Campanas Observatory, report that near-
infrared spectroscopy (range 800-2400 nm) of PSN J21431113-3858058 = SN 2014bt
was obtained with the FoldedPort Infrared Echellette (FIRE) spectrograph on
the 6.5-m Magellan Baade Telescope on June 6 UT.  SN 2014bt is a core-collapse
supernova with no evidence for hydrogen; it is a type-Ibc supernova near
maximum brightness.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2014 CBAT
2014 June 18                     (CBET 3905)              Daniel W. E. Green