Electronic Telegram No. 3414
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 2013Y
     Tomoki Morokuma, Institute of Astronomy, University of Tokyo; Rina
Okamoto, Takashi Horiuchi, and Toru Misawa, Shinshu University; Nozomu
Tominaga, Konan University; Masaomi Tanaka, National Astronomical Observatory
of Japan; Kensho Mori, Konan University; and Eric Hsiao, C. Contreras, and C.
Gonzalez, Las Campanas Observatory, on behalf of the Kiso Supernova Survey
(KISS) collaboration, report the discovery of an apparent supernova (mag
18.7) on a g-band CCD image taken on Feb. 6.66 UT with the Kiso Wide Field
Camera (field-of-view 2.1 deg x 2.1 deg) on the 1.05-m Kiso Schmidt telescope
at the Kiso Observatory.  The new object is located at R.A. = 12h09m39s.70,
Decl. = +16d12'14".3 (equinox 2000.0), which is 1".2 east and 2".1 north of
the presumed host galaxy SDSS J120939.62+161212.2 at z = 0.077.  Nothing is
seen at this position in the Sloan Digital Sky Survey image.  This object was
confirmed with the Swope 1-m telescope at Las Campanas Observatory.

     F. Taddia, Oskar Klein Centre, Stockholm University; and M. Stritzinger,
Department of Physics and Astronomy, Aarhus University, on behalf of the KISS
collaboration, report that they obtained a visual-wavelength spectrogram on
Feb. 11.2 UT of 2013Y with the Nordic Optical Telescope (+ Alfosc).  Close
inspection of the spectrum reveals 2013Y to be a normal type-Ia supernova
around maximum light.  Cross-correlation of the NOT spectrum with a library of
template spectra using SNID (Blondin and Tonry 2007, Ap.J. 666, 1024) provides
a very close comparison to the normal type-Ia supernova 2005cf (Garavini et
al. 2007, A.Ap. 471, 527; Wang et al. 2009, Ap.J. 697, 380) at 5 days past
maximum light.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2013 CBAT
2013 February 13                 (CBET 3414)              Daniel W. E. Green