[IAUC] CBET 3653: 20130914 : SUPERNOVA 2013fi = PSN J03043856+4213494

[quai en eps.harvard.edu]

                                                  Electronic Telegram No. 3653
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 2013fi = PSN J03043856+4213494
     Zhijian Xu (Nanjing, Jiangsu, China) and Xing Gao (Urumqi, Xinjiang,
China) report the discovery of a possible supernova (mag approximately 18.1)
on a 40-s unfiltered CCD survey image (limiting mag about 19.0) taken by Gao
in the course of the Xingming Sky Survey around Aug. 31.893 UT using a
Celestron C14 0.36-m f/6.9 Schmidt-Cassegrain telescope at Mt. Nanshan.  The
new object located at R.A. = 3h04m38s.57 +/- 0s.03, Decl. = +42d13'49".4 +/-
0".2 (equinox 2000.0), which is about 2".9 east and 2".4 north of the center
of PGC 2194789.  Nothing is visible at this position on a Digitized Sky
Survey image from 1998 Sept. 30 (limiting mag about 19.7).  Their images have
been posted at website URL http://www.xjltp.com/XOSS/XM59ZX/XM59ZX.htm.  The
variable was designated PSN J03043856+4213494 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2013fi based on the
spectroscopic confirmation reported below.  Additional CCD magnitudes for
2013fi:  Aug. 10 and 19, [18.5 (Gao and Xu); Sept. 1.868, 17.9 (Gao and Xu);
2.837, 17.9 (Gao and Xu); 4.993, 18.1 (Gianluca Masi and Francesca Nocentini;
remotely using a 43-cm telescope at Ceccano, Italy; position end figures
38s.47, 49".6); 5.365, 18.2 (Joseph Brimacombe, Cairns, Australia; remotely
with a 51-cm RCOS telescope + luminance filter located at the Nex Mexico Skies
observatory near Mayhill, New Mexico, USA; position end figures 38s.58, 49".2;
image posted at URL http://www.flickr.com/photos/43846774@N02/9736371276/).

     Nozomu Tominaga, Konan University; Yuki Kikuchi, University of Tokyo;
Nobuharu Ukita, National Astronomical Observatory of Japan; Kensho Mori,
Hiroshima University; Masaomi Tanaka, National Astronomical Observatory of
Japan; Emiko Matsumoto, Konan University; Tomoki Morokuma, Institute of
Astronomy, University of Tokyo; and Ikuru Iwata, National Astronomical
Observatory of Japan, on behalf of the Kiso Supernova Survey (KISS) project,
report that they obtained a visual-wavelength spectrogram of PSN
J03043856+4213494 = SN 2013fi on Sept. 9.7 UT with the Okayama 188-cm
telescope (+ Kyoto Okayama Optical Low-dispersion Spectrograph).  The
spectrum reveals the transient to be a normal type-Ia supernova at several
days after maximum light.


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                         (C) Copyright 2013 CBAT
2013 September 14                (CBET 3653)              Daniel W. E. Green