[IAUC] CBET 3785: 20140117 : SUPERNOVA 2014F IN NGC 6667 = PSN J18303179+6759297

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                                                  Electronic Telegram No. 3785
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 en eps.harvard.edu (alternate cbat en iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


SUPERNOVA 2014F IN NGC 6667 = PSN J18303179+6759297
     S. Nakano, Sumoto, Japan, reports the discovery by Koichi Itagaki
(Teppo-cho, Yamagata, Japan) of an apparent supernova (mag 16.8) in NGC 6667
on an unfiltered CCD frame (limiting magnitude 18.5) taken on Jan. 11.871 UT
using a 0.50-m f/6.8 reflector at the Takanezawa station, Tochigi-ken.  The
new object is located at R.A. = 18h30m31s.79, Decl. = +67d59'29".7 (equinox
2000.0), which is 44" west and 15" north of the center of NGC 6667.  The
discovery image was posted at URL http://www.k-itagaki.jp/images/6667.jpg.
The variable was designated PSN J18303179+6759297 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2014F based on the
spectroscopic confirmation reported below.  Additional CCD magnitudes for
2014F:  2007 Aug. 23.589, [19.0 (Itagaki; 0.60-m f/5.7 reflector at Yamagata);
2014 Jan. 12.109, V = 16.6, I_c = 16.1 (Seiichiro Kiyota, Kamagaya, Japan;
remotely with an iTelescope 0.5-m astrograph near Mayhill, NM, USA; image
posted at URL http://meineko.sakura.ne.jp/ccd/PSN_J18303179+6759297.jpg);
12.243, 16.7 (T. Yusa, Osaki, Japan; remotely using an iTelescope 32-m f/8
astrograph near Nerpio, Spain; position end figures 31s.74, 30".1; offset 45"
west and 15" north of the center of NGC 6667; limiting mag 18.5; image posted
at URL http://space.geocities.jp/yusastar77/supernova/PSNinN6667_140112.htm);
12.365, 17.1 (Toshihide Noguchi, Katori, Chiba-ken, Japan; 0.23-m f/6.3
Schmidt-Cassegrain reflector + BITRAN BT-11E camera; position end figures
31s.82, 29".6; reference stars from UCAC4 catalogue; image posted at website
URL http://park8.wakwak.com/~ngc/images/PSNinNGC6667.jpg; communicated by
Nakano); 13.496, 16.7 (Joseph Brimacombe, Cairns, Australia; remotely using a
43-cm CDK telescope + STL-6303 camera located at the New Mexico Skies
observatory near Mayhill; position end figures 31s.84, 30".0; image posted at
website URL http://www.flickr.com/photos/43846774@N02/11958413115/).

     M. Yamanaka, Kyoto University; and Y. Moritani, T. Ui, K. Takaki, and
K. S. Kawabata, Hiroshima University, obtained a low-resolution optical
spectrogram (range 480-900 nm) of PSN J18303179+6759297 = SN 2014F on Jan.
12.8 UT with the 1.5-m Kanata telescope (+ HOWPol) at the Higashi-Hiroshima
Observatory.  The spectrum shows a blue continuum and a broad P-Cyg profile of
H-alpha, suggesting that this is an early type-II supernova.  A comparison
with a library of supernova spectra using GELATO (Harutyunyan et al. 2008,
A.Ap. 488, 383) reveals that the spectrum gives a good match to those of
several type-II supernovae (e.g., SNe 2006ca and 1999gi) close to maximum
light.


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

                         (C) Copyright 2014 CBAT
2014 January 17                  (CBET 3785)              Daniel W. E. Green