Electronic Telegram No. 3952
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 2014cn IN NGC 4134 = PSN J12091154+2910209
     Further to CBET 3855, S. Kumar, W. Zheng, and A. V. Filippenko,
University of California at Berkeley, report the LOSS discovery of a possible
supernova in NGC 4134 on unfiltered KAIT images:

 SN       2014 UT        R.A. (2000.0) Decl.      Mag.      Offset
 2014cn   Apr. 24.38   12 09 11.54  +29 10 20.9   17.6    20" E, 16" S

A finding chart was posted by the discoverers at the following website URL:
http://astro.berkeley.edu/~zwk/findingchart/PSN_J12091154+29102086.jpg.  The
variable was designated PSN J12091154+2910209 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2014cn based on the
spectroscopic confirmation reported below.  Additional CCD magnitudes for
2014cn:  Apr. 16 UT, [18.1 (KAIT); 26.88, 17.4 (G. Masi, F. Nocentini, and P.
Schmeer; 43-cm telescope at Ceccano, Italy; position end figures 11s.50,
20".8); 26.892, V = 17.3 (N. James, Chelmsford, Essex, England; Celestron 11
telescope; position end figures 11s.49, 21".1; image posted at website URL
http://nickdjames.com/supernovae/2014/PSNJ12091154+2910209_20140426_ndj.jpg);
29.254, 17.7 (J. Brimacombe, Cairns, Australia; remotely using a 43-cm CDK
telescope at the New Mexico Skies observatory near Mayhill, NM, USA; image
posted at URL https://www.flickr.com/photos/43846774@N02/13899214270/);
May 4.953, 17.6 (F. Luppi and L. Buzzi, Varese, Italy; 0.38-m f/6.8
reflector; position end figures 11s.47, 20".8; image posted at website URL
http://www.astrogeo.va.it/pub/TOCP/PSN_N4134.jpg).

     W. Zheng, I. Shivvers, K. I. Clubb, and A. V. Filippenko, University of
California, Berkeley, report that inspection of a CCD spectrogram (range
350-1000 nm), obtained on June 30.205 UT with the Shane 3-m reflector (+ Kast
spectrograph) at Lick Observatory, shows that PSN J12091154+2910209 = SN
2014cn is a type-IIP supernova.  The spectrum exhibits a clear P-Cyg profile
of H-alpha.  Cross-correlation with a library of supernova spectra using the
"SuperNova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666,
1024) indicates a similarity with a number of type-IIP supernovae at about a
month to several months after the explosion.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2014 CBAT
2014 September 1                 (CBET 3952)              Daniel W. E. Green