[IAUC] CBET 3885: 20140524 : SUPERNOVA 2014be = PSN J16093512+4226304

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                                                  Electronic Telegram No. 3885
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 2014be = PSN J16093512+4226304
     Wenxiong Li, Jun Mo, and Xiaofeng Wang, Tsinghua University (THU); and
Tianmeng Zhang, National Astronomical Observatories of China (NAOC), report
the discovery of an apparent supernova (mag 18.6) on unfiltered CCD images
taken on May 7.76 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. =
16h09m35s.12, Decl. = +42d26'30".4 (equinox 2000.0), which is 4".6 south of
the center of the galaxy SDSS J160935.12+422634.9.  Nothing is visible at
this position on archival images obtained on Apr. 30 (limiting mag about
20.0) or on a Palomar Sky Survey image.  The TNTS images are posted at URL
http://www.thca.tsinghua.edu.cn/~wangxf/TNTS/PSNJ16093512+4226304.png.
     The variable was designated PSN J16093512+4226304 when it was posted at
the Central Bureau's TOCP webpage and is here designated SN 2014be based on
the spectroscopic confirmation reported below.  Additional CCD magnitudes
for 2014be:  May 9.880 UT, 18.5 (Gianluca Masi; remotely using a 43-cm
telescope near Ceccano, Italy; position end figures 35s.22, 31".3); 10.357,
17.8 (Joseph Brimacombe, Cairns, Australia; remotely using a 51-cm RCOS
telescope + STXL-6303 camera at the New Mexico Skies observatory near
Mayhill, New Mexico, USA; position end figures 35s.25, 31".4; image posted at
website URL https://www.flickr.com/photos/43846774@N02/14182053101/).

     Jujia Zhang, Yunnan Astronomical Observatory (YNAO); and Xiaofeng Wang,
Tsinghua University, report on an optical spectrogram (range 320-880 nm) of
PSN J16093512+4226304 = SN 2014be that was obtained on May 14.77 UT with the
2.4-m telescope (+ YFOSC) at the LiJiang Gaomeigu Station of YNAO.  The
spectrum is consistent with a type-Ia supernova around maximum light.  Cross-
correlation with a library of supernova spectra using the "Supernova
Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows
that 2014be matches with SN 2002ck at -1 day.  Adopting for the host galaxy
a redshift of 0.071 (estimated from the SNID fit), they measure a velocity of
the Si II 635.5-nm absorption feature to be about 10700 km/s.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2014 CBAT
2014 May 24                      (CBET 3885)              Daniel W. E. Green