[IAUC] CBET 3756: 20131217 : SUPERNOVA 2013hi = PSN J03142473+4610490

Lun Dic 16 22:34:12 ART 2013

                                                  Electronic Telegram No. 3756
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 2013hi = PSN J03142473+4610490
     Denis Denisenko, Sternberg Astronomical Institute, discovered an apparent
supernova (mag 16.2) on 60-s unfiltered CCD survey images (limiting magnitude
18.7) obtained on Nov. 11.756-11.759 UT with the MASTER-Kislovodsk robotic
telescope (0.40-m f/2.5 reflector).  The new object is located at R.A. =
3h14m24s.73, Decl. = +46o10'49".0 (equinox 2000.0), which is 11".7 east and
0".1 south of the center of the galaxy PGC 166640.  Denisenko, with E.
Gorbovskoy and V. Lipunov, found nothing visible at this position on a
MASTER-Kislovodsk image taken on 2011 Oct. 27.988 (limiting mag 19.5).  The
discovery and reference images are posted at the following website URL:
http://master.sai.msu.ru/static/OT/031424.73461049.0.png.  The variable was
designated PSN J03142473+4610490 when it was posted at the Central Bureau's
TOCP webpage and is here designated SN 2013hi based on the spectroscopic
confirmation reported below.  Additional CCD magnitudes for 2013hi:  Nov.
17.476, 17.4 (Joseph Brimacombe, Cairns, Australia; remotely using a 51-cm
RCOS telescope + STXL-6303 camera + infrared filter located at the New Mexico
Skies observatory near Mayhill, NM, USA; position end figures 24s.72, 49".6;
image posted at URL http://www.flickr.com/photos/43846774@N02/10925488354/);
24.078, 17.1 (V. Tepikin, Moscow, and D. Denisenko; 0.36-m f/11 Schmidt-
Cassegrain Bradford Robotic Telescope, as noted at http://www.telescope.org/;
60-s unfiltered exposure; position end figures 24s.73, 48".8; image posted at
URL http://master.sai.msu.ru/static/OT/J031424+461049-BRT-Nov24.jpg); 26.884,
17.5 (G. Masi, F. Nocentini, and P. Schmeer; remotely using a 43-cm telescope
near Ceccano, Italy; position end figures 24s.72, 48".8); 27.008, 18.5 (F.
Luppi and L. Buzzi, Varese, Italy; position end figures 24s.72, 49".3; image
posted at URL http://www.astrogeo.va.it/pub/TOCP/PSN_P166460.jpg); Dec. 2.867,
V = 17.3 (Massimiliano Martignoni, Magnago, Italy, 0.25-m f/10 reflector;
position end figures 24s.71, 49".0; PPMXL reference stars).

     P. Ochner, A. Pastorello, L. Tomasella, S. Benetti, E. Cappellaro, N.
Elias-Rosa, and M. Turatto, Osservatorio Astronomico di Padova, Istituto
Nazionale di Astrofisica, report that an optical spectrogram (range 340-820
nm; resolution 1.3 nm) of PSN J03142473+4610490 = SN 2013hi, obtained on Dec.
11.90 UT with the Asiago 1.82-m Copernico Telescope (+ AFOSC), shows it to be
a type-Ia supernova.  Adopting a redshift z = 0.0254 for the host galaxy, PGC
166460 (Nakanishi et al. 2007, Ap.J. Suppl. 112, 245; via NED), a good match
is found with the type-Ia supernova 2002bo (Benetti et al. 2004, MNRAS 348,
261) about one month after B-band maximum light.  The Asiago classification
spectra are posted at the website URL http://sngroup.oapd.inaf.it.  The
classification is 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 2013 CBAT
2013 December 17                 (CBET 3756)              Daniel W. E. Green