Electronic Telegram No. 3685
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 2013fx
     G. Pignata, Y. Apostolovski, E. Paillas, S. Varela, F. Bufano, F.
Olivares, and K. Takats, Universidad Andres Bello; M. Hamuy, R. Antezana, L.
Gonzalez, R. Cartier, F. Forster, and F. Carrasco, Universidad de Chile; F.
Aros, Pontificia Universidad Catolica de Chile; B. Conuel, Wesleyan University;
G. Folatelli, IPMU, University of Tokyo; and D. E. Reichart, J. B. Haislip,
J. P. Moore, and A. P. LaCluyze, University of North Carolina at Chapel Hill,
on behalf of the CHASE project (which is part of the Millennium Center for
Supernova Science collaboration), report the discovery of an apparent
Supernova (mag approximately 17.9) on an unfiltered image taken on Oct. 21.20
UT with the 0.41-m 'PROMPT 3' telescope located at Cerro Tololo.  The new
object is located at R.A. = 23h03m21s.77 +/- 0".2, Decl. = -69o11'18".5 +/-
0".2 (equinox 2000.0), which is about 3".9 west and 0".5 north of center of
the presumed host galaxy.  Additional CHASE magnitudes for 2013fx:  Aug. 28.36,
[18.0; Oct. 26.04, 17.0.

     S. Spiro, Istituto Nazionale di Astrofisica, Padova Astronomical
Observatory; N. Elias-Rosa, Istituto Nazionale di Astrofisica, Padova
Astronomical Observatory and Institut de Ciencies de l'Espai, IEEC, Consejo
Superior de Investigaciones Cientificas, Barcelona; M. Turatto, S. Benetti,
E. Cappellaro, and A. Pastorello, Istituto Nazionale di Astrofisica, Padova
Astronomical Observatory; M. Fraser, University of Cambridge; K. Maguire,
European Southern Observatory; S. Valenti, University of California at Santa
Barbara and Las Cumbres Observatory Global Telescope; S. Taubenberger, Max-
Planck-Institute fuer Astrophysik, Garching; S. J. Smartt, K. Smith, D. Young,
and C. Inserra, Queen's University, Belfast; M. Sullivan, University of
Southampton; and A. Gal-Yam, O. Yaron, and I. Manulis, Weizmann Institute for
Science, on behalf of the PESSTO (the Public ESO Spectroscopic Survey for
Transient Objects) collaboration (see Valenti et al., posted at website URL
http://www.astronomerstelegram.org/?read=4037), report that optical
spectroscopy of 2013fx, obtained on Oct. 27.15 UT with the New Technology
Telescope (+ EFOSC2; spectral range 360-910 nm), shows that it is a type-Ia
supernova at redshift z = 0.06, a few days before maximum light.  The
classification was made via SNID (Blondin and Tonry 2007, Ap.J. 666, 1024)
and GELATO (Harutyunyan et al. 2008, A.Ap. 488, 383); PESSTO classification
spectra can be obtained from website URL http://www.pessto.org/.


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

                         (C) Copyright 2013 CBAT
2013 October 30                  (CBET 3685)              Daniel W. E. Green