Electronic Telegram No. 3992
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 2014di IN ESO 244-G31 = PSN J01300340-4241487
     L. A. G. Monard, Calitzdorp, Western Cape, South Africa, reports his
discovery of an apparent supernova (mag 18.1) on several unfiltered CCD images
taken on Sept. 21.012 UT with a 35-cm RCX400 telescope (+ SBIG ST8-XME camera)
at his Klein Karoo Observatory.  The new object is located at R.A. =
1h30m03s.40, Decl. = -42d41'48".7 (equinox 2000.0; UCAC2 reference stars),
which is 22" west and 38" south of the center of the type-Sc galaxy ESO
244-31.  The variable was designated PSN J01300340-4241487 when it was posted
at the Central Bureau's TOCP webpage and is here designated SN 2014di based on
the spectroscopic confirmation reported below.  SNe 2005Q, 2005me, and 2010cm
also appeared in PGC 5597 = ESO 244-G31.  Additional CCD magnitudes for
2014di:  Sept. 12.904, [20 (Monard); 21.894, 17.8 (Monard); 22.498, V = 18.2
(S. Kiyota, Kamagaya, Japan; remotely with an iTelescope 0.7-m telescope + FLI
PL-9000 camera at Siding Spring).  Kiyota has posted his image at website URL
http://meineko.sakura.ne.jp/ccd/PSN_J01300340-4241487.jpg.

     N. Blagorodnova, N. Walton, and M. Fraser, Institute of Astronomy,
University of Cambridge; C. Ashall, Liverpool John Moores University; R.
Scalzo, Australian National University; C. Inserra, S. J. Smartt, K. W. Smith,
and D. Young, Queen's University, Belfast; K. Maguire, European Southern
Observatory; M. Sullivan, University of Southampton; S. Valenti, Las Cumbres
Observatory Global Telescope Network; and O. Yaron, I. Manulis, and A.
Gal-Yam, Weizmann Institute for Science, on behalf of the PESSTO collaboration
(see website URL http://www.astronomerstelegram.org/?read=4037), report that
an optical spectrogram of PSN J01300340-4241487 = SN 2014di, obtained on Sept.
23 UT at the 3.6-m New Technology Telescope (+ EFOSC2 Grism 13; range
398.5-931.5 nm, 1.8-nm resolution) at La Silla, shows it to be a young type-II
supernova.  Adopting a recession velocity of 6726 km/s for ESO 244-31 (Strauss
et al. 1992, Ap.J. Suppl. 83, 29; via NED), the best fit to this spectrum
found via the "Supernova Identification" code (SNID; Blondin and Tonry 2007,
Ap.J. 666, 1024) is with the spectrum of a pre-maximum type-II supernova.  The
spectrum displays a blue continuum with weak H-alpha that is consistent with
the host-galaxy's redshift.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2014 CBAT
2014 September 28                (CBET 3992)              Daniel W. E. Green