Electronic Telegram No. 3794
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 2014K IN PGC 24869 = PSN J08510815+7150339
     Giancarlo Cortini, Predappio, Italy, reports the discovery of a possible
supernova (mag about 15.4) on several 70-s unfiltered CCD images (limiting mag
about 19.0) taken on Jan. 22.98 UT with a 35-cm reflector (+ SXVR-H9 camera).
The new object is located at R.A. = 8h51m08s.15, Decl. = +71d50'33".9 (equinox
2000.0), which is about 1" west and 7" north of the center of the galaxy PGC
24869 = MCG +12-9-21.  Nothing appears at this position on Palomar Sky Survey
red and blue plates.  The variable was designated PSN J08510815+7150339 when
it was posted at the Central Bureau's TOCP webpage and is here designated SN
2014K based on the spectroscopic confirmation reported below.  Additional CCD
magnitudes for 2014K:  Jan. 6.90, [18.5 (Cortini); 23.088, 15.8 (Denis
Buczynski, Portmahomack, U.K.; 35-cm reflector + ST9XME camera; position end
figures 08s.26, 33".2; UCAC-3 reference stars); 24.942, V = 16.4 (Massimiliano
Martignoni, Magnago, Italy; 25-cm Schmidt-Cassegrain reflector; position end
figures 08s.20, 32".7; PPMXL reference stars); 25.741, 16.2 (Gianluca Masi,
Francesca Nocentini, and Patrick Schmeer; remotely using a 43-cm telescope
near Ceccano, Italy; position end figures 08s.24, 33".3); 26.279, 16.1
(Joseph Brimacombe, Cairns, Australia; remotely using a 51-cm RCOS telescope +
STXL-6303 camera located at the New Mexico Skies observatory near Mayhill, NM,
U.S.A.; position end figures 08s.09, 33".8; image posted at website URL
http://www.flickr.com/photos/43846774@N02/12159858224/).  Masi et al. add that
low-resolution spectra obtained on Jan. 25.826 with a 36-cm telescope (+ 100
lines/mm grating; dispersion 3.47 nm/pixel) show clear Si II absorption around
615 nm, suggesting it to be a type-Ia supernova.

     L. Tomasella, S. Benetti, A. Pastorello, N. Elias-Rosa, E. Cappellaro, P.
Ochner, and M. Turatto, Osservatorio Astronomico di Padova, Istituto Nazionale
di Astrofisica, report that an optical spectrogram (range 340-820 nm;
resolution 1.3 nm) of PSN J08510815+7150339 = SN 2014K, obtained on Jan. 25.76
UT with the Asiago 1.82-m Copernico Telescope (+ AFOSC), shows it to be a
normal type-Ia supernova.  Adopting for the host galaxy (PGC 24869) a
recessional velocity of 3485 km/s (Strauss et al. 1992, Ap.J. Suppl. 83, 29;
via NED), a good match is found with the type-Ia supernova 1994D at about 20
days after B-band maximum light (Patat et al. 1996, MNRAS 278, 111).  An
expansion velocity of about 10000 km/s is derived from the minimum of the Si
II 635-nm line.  The Asiago classification spectra are posted at website URL
http://sngroup.oapd.inaf.it; classification was made via GELATO (Harutyunyan
et al. 2008, A.Ap. 488, 383) and SNID (Blondin and Tonry 2007, Ap.J. 666,
1024).


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

                         (C) Copyright 2014 CBAT
2014 January 30                  (CBET 3794)              Daniel W. E. Green