Electronic Telegram No. 3754
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 2013hh IN UGC 6483 = PSN J11290437+1714095
     A. Klotz, Institut de Recherche en Astrophysique et Planetologie (IRAP),
Universite de Toulouse, reports the discovery by D. Turpin (IRAP) of an
apparent supernova (mag 15.9) on an R-band image taken on Dec. 12.13 UT with
the robotic TAROT telescope at Calern, France.  The new object is located at
R.A. = 11h29m04s.37, Decl. = +17d14'09".5 (equinox 2000.0), which is 30" east
and 15" north of the center of UGC 6483.  Images have been posted at website
URL http://cador.obs-hp.fr/sn_tarot/PSN_J11290437+1714095/.  The variable was
designated PSN J11290437+1714095 when it was posted at the Central Bureau's
TOCP webpage and is here designated SN 2013hh based on the spectroscopic
confirmation reported below.  Additional CCD magnitudes for 2013hh:  Dec.
11.09, R = 15.9 (Klotz and Turpin); 14.163, V = 16.6 (Massimiliano Martignoni,
Magnago, Italy, 25-cm f/10 Schmidt-Cassegrain reflector; position end figures
04s.41, 08".8; PPMXL reference stars).

     M. Childress, C. Owen, R. Scalzo, F. Yuan, and B. Schmidt, Australian
National University (ANU); and B. Tucker, ANU and University of California at
Berkeley, report that spectroscopy of PSN J11290437+1714095 = SN 2013hh,
obtained via a 20-min WiFeS spectrogram (cf. Dopita et al. 2007, Ap. Space
Sci. 310, 255) on the ANU 2.3-m telescope at Siding Spring using the
B3000/R3000 gratings (wavelength range 350-980 nm at 0.1-nm resolution) on
Dec. 12.73 UT, shows it to be a type-Ia supernova, similar to the 1991T-like
subclass, around maximum light.  Classification with SNID (Blondin and Tonry
2007, Ap.J. 666, 1024) shows good matches to SN 1999ac and SN 1999aa, both at
phase -2 days.  The preferred SNID redshift is about 0.012, consistent with
the redshift of the apparent host galaxy, UGC 6483 (z = 0.01299; Giovanelli
et al. 1997, A.J. 114, 122).  Absorption in Si II 635.5-nm at 9100 km/s is
observed, as well as absorption in Ca II H/K and the infrared triplet, Fe
lines at 450.0 and 500.0 nm, and the sulfur W feature at 560.0 nm.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2013 CBAT
2013 December 16                 (CBET 3754)              Daniel W. E. Green