[IAUC] CBET 3362: 20121230 : SUPERNOVA 2012ie = PSN J02242235+4051032

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                                                  Electronic Telegram No. 3362
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 2012ie = PSN J02242235+4051032
     Li Zhou, Juncheng Chen, and Xiaofeng Wang, Tsinghua University (THU); and
Tianmeng Zhang and Xu Zhou, National Astronomical Observatories of China
(NAOC), report the discovery of an apparent supernova (mag 18.0) on unfiltered
CCD images taken on Dec. 23.50 UT using the 0.6-m NAOC Schmidt telescope in
the course of THU-NAOC Transient Survey (TNTS).  The new object is located at
R.A. = 02h24m22s.35, Decl. = +40d51'03".2 (equinox 2000.0), which is about
6".8 east and 3".2 north of the center of the galaxy 2MASX J02242188+4050599.
Nothing is visible at this position on archival images obtained on Dec. 7
(limiting mag about 20.0) or on Digitized Sky Survey images from the Palomar
Sky Survey.  The TNTS images are posted at the following website URL:
http://www.thca.tsinghua.edu.cn/~wangxf/TNTS/PSNJ02242235+4051032.png.  The
variable was designated PSN J02242235+4051032 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2012ie based on the
spectroscopic confirmation reported below.

     L. Tomasella, S. Benetti, A. Pastorello, E. Cappellaro, P. Ochner, and M.
Turatto, Osservatorio Astronomico di Padova, Istituto Nazionale di Astrofisica,
report that optical spectroscopy (range 340-820 nm; resolution 1.3 nm),
obtained on Dec. 26.92 UT with the Asiago 1.82-m Copernico Telescope (+ AFOSC),
shows that PSN J02242235+4051032 = SN 2012ie is a type-Ia supernova at
redshift z around 0.048.  The best match was found with various type-Ia
supernovae about one week after maximum light.  The expansion velocity, as
deduced from the position of the Si II 635.5-nm absorption, is about 11000
km/s.  The Asiago classification spectra are posted at website URL
http://graspa.oapd.inaf.it; classification was made via GELATO (Harutyunyan
et al. 2008, A.Ap. 488, 383) and SNID (Blondin and Tonry 2007, Ap.J. 666,
1024).


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2012 CBAT
2012 December 30                 (CBET 3362)              Daniel W. E. Green