Electronic Telegram No. 4002
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 2014dp IN ESO 562-G3 = PSN J08193798-2234147
     S. Parker, Canterbury, New Zealand, reports the discovery of an apparent
supernova (red mag 16.8) on a 30-s unfiltered CCD image (limiting mag 18.5)
taken by himself on Sept. 28.673 UT with a Officina Stellare 40-cm f/5.25
RiLA Astrograph (+ ST10 camera) at his Parkdale Observatory in the course of
the Backyard Observatory Supernova Search.  The new object is located at R.A.
= 8h19m37s.98, Decl. = -22d34'14".7 (equinox 2000.0; reference stars from
USNO-B and UCAC4 catalogues), which is 14" west and 4" north of the nucleus of
the galaxy ESO 562-G3.  Nothing is visible at this position on Digitized Sky
Survey red and infrared images (limiting red mag > 19).  An image of the new
object is viewable at website URL http://tinyurl.com/nhjvauo.  The variable
was designated PSN J08193798-2234147 when it was posted at the Central
Bureau's TOCP webpage and is here designated SN 2014dp based on the
spectroscopic confirmation reported below.  J. Brimacombe, Cairns, Australia,
writes that images of 2014dp obtained remotely using a 33-cm RCOS telescope (+
STL-6303 camera) at the Savannah Skies Observatory, in northern Queensland
yields mag 17.1 and position end figures 37s.98, 14".8; his image is posted at
website URL https://www.flickr.com/photos/43846774@N02/15455002495/.

     M. Childress, R. Scalzo, F. Yuan, B. Zhang, A. Ruiter, I. Seitenzahl, and
B. Schmidt, Australian National University (ANU); and B. Tucker, ANU and
University of California at Berkeley, report that spectroscopic classification
of PSN J08193798-2234147 = SN 2014dp was obtained via a 60-min exposure on
Oct. 9.72 UT with the Wide Field Spectrograph (cf. Dopita et al. 2007, Ap.
Space Sci. 310, 255) on the ANU 2.3-m telescope at Siding Spring using the
B3000/R3000 gratings (wavelength range 350-980 nm at 0.1-nm resolution).  The
spectrum indicates that 2014dp is a type-Ib supernova a few weeks past maximum
light, with strong helium signatures in the spectrum, particularly the He II
568.6-nm line.  Classification with SNID (Blondin and Tonry 2007, Ap.J. 666,
1024) shows a good match to SN 1990I at phase +11 days, and the preferred SNID
redshift is about 0.018, consistent with the apparent host galaxy, ESO 562-G3
(z = 0.01895, via the HIPASS Catalogue).


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2014 CBAT
2014 October 19                  (CBET 4002)              Daniel W. E. Green