[IAUC] CBET 3821: 20140310 : SUPERNOVA 2014Y = PSN J07233339+5426302

[quai en eps.harvard.edu]

                                                  Electronic Telegram No. 3821
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 2014Y = PSN J07233339+5426302
     Tianmeng Zhang, National Astronomical Observatories of China (NAOC); and
Xiaofeng Wang and Jun Mo, Tsinghua University (THU), report the discovery of
an apparent supernova (mag 18.3) on unfiltered CCD images taken on Mar. 2.59
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. = 7h23m33s.39,
Decl. = +54d26'30".2 (equinox 2000.0), which is 1".7 west and 3".2 north of
the center of the presumed host galaxy.  Nothing is visible at this position
on a Digitized Sky Survey image.  The TNTS images are posted at website URL
http://www.thca.tsinghua.edu.cn/~wangxf/TNTS/PSNJ07233339+5426202.png.  The
variable was designated PSN J07233339+5426302 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2014Y based on the
spectroscopic confirmation reported below.  Additional CCD magnitudes for
2014Y:  Feb. 21, [20.0 (TNTS); Mar. 4.369, 17.7 (Joseph Brimacombe, Cairns,
Australia; remotely using a 43-cm CDK telescope + STL-6303 camera at the New
Mexico Skies observatory near Mayhill, NM, USA; position end figures 33s.46,
19".3; image posted at http://www.flickr.com/photos/43846774@N02/12978850675/);
7.778, 17.9 (Gianluca Masi, Francesca Nocentini, and Patrick Schmeer; remotely
using the a 43-cm telescope near Ceccano, Italy; position end figures 33s.41,
19".6).

     J.-J. Zhang, Yunnan Astronimical Observatory (YNAO); and X.-F. Wang,
Tsinghua University, report on an optical spectrogram (range 340-880 nm) of
PSN J07233339+5426302 = SN 2014Y that was obtained on Mar. 7.67 UT with the
2.4-m telescope (+ YFOSC) at the LiJiang Gaomeigu Station of YNAO.  The
spectrum is consistent with a type-IIn supernova at a few weeks after 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 2014Y matches with SN 1996L at +58 days.  The host galaxy
seems to have a redshift of about 0.039 from the narrow emission line.


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                         (C) Copyright 2014 CBAT
2014 March 10                    (CBET 3821)              Daniel W. E. Green