Electronic Telegram No. 3895
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 2014bl = PSN J13253881+2557339
     W.-x. Li, X.-f. Wang, and J. Mo, Tsinghua University (THU); and T.-m.
Zhang, National Astronomical Observatories of China (NAOC), report the
discovery of an apparent supernova (mag 18.3) on unfiltered CCD images taken
on May 20.60 UT using the 0.6-m NAOC Schmidt telescope in the course of the
THU-NAOC Transient Survey (TNTS).  The new object is located at R.A. =
13h25m38s.81, Decl. = +25d57'33".9 (equinox 2000.0), which is 0".1 west and
0".2 south of the center of the galaxy SDSS J132538.81+255734.0.  Nothing is
visible at this position on Palomar Sky Survey images.  TNTS images are posted
at URL http://www.thca.tsinghua.edu.cn/~wangxf/TNTS/PSNJ13253881+2557339.png.
The variable was designated PSN J13253881+2557339 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2014bl based on the
spectroscopic confirmation reported below.  Additional CCD magnitudes for
2014bl:  2013 Jan. 24, [20.0 (TNTS); 2014 May 22.265, 18.4 (J. Brimacombe,
Cairns, Australia; remotely using a 51-cm RCOS telescope at the New Mexico
Skies observatory near Mayhill, NM, USA; position end figures 38s.85, 33".6;
image posted at URL https://www.flickr.com/photos/43846774@N02/14254964775/);
25.60, 17.1 (TNTS); 29.839, 17.0 (G. Masi; remotely using a 43-cm telescope
at Ceccano, Italy; position end figures 38s.81, 33".8).
 	
     W.-x. Li, L.-m. Rui, and X.-f. Wang, Tsinghua University; Q. Yang and
X.-b. Wu, Peking University; and T.-m. Zhang, National Astronomical
Observatories of China (NAOC), report on an optical spectrogram (range 370-840
nm) of 2014bl that was obtained on May 26.56 UT with the 2.16-m telescope (+
OMR) at the Xinglong Station of the NAOC.  The spectrum is consistent with
a broad-line type-Ic supernova at around maximum light.  Cross-correlation
with a library of supernova spectra using the GELATO software (Harutyunyan et
al. 2008, A.Ap. 488, 383) shows that 2014bl matches SN 2003jd at -2 days.
From the narrow emission lines of the spectrum, they measure a redshift of
0.0377 for the host galaxy (SDSS J132538.81+255734.0).


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2014 CBAT
2014 June 14                     (CBET 3895)              Daniel W. E. Green