Electronic Telegram No. 3646
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 2013fe NEAR IC 1875 = PSN J03035325-3924202
     R. Antezana, M. Hamuy, L. Gonzalez, R. Cartier, F. Forster, S. Silva, F.
Carrasco, and R. Ramirez, Universidad de Chile; G. Pignata, Y. Apostolovski,
E. Paillas, S. Varela, F. Bufano, F. Olivares, and K. Takats, Universidad
Andres Bello; 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 14.4) on an unfiltered image
taken on Aug. 13.40 UT with the 0.41-m 'PROMPT 1' telescope located at Cerro
Tololo.  The new object is located at R.A. = 03h03m53s.25 +/- 0".2, Decl. =
-39o24'20".2 +/- 0".2 (equinox 2000.0), which is more than 90" from all the
galaxies visible in the field, making difficult the determination of the host.
The variable was designated PSN J03035325-3924202 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2013fe based on the
spectroscopic confirmation reported below.  Additional CCD magnitudes for
2013fe:  July 2.36, [18.5 (CHASE); Aug. 16.26, 14.4 (CHASE); 17.31, 14.5
(CHASE); 19.776, 16.4 (J. Brimacombe, Cairns, Australia; 43-cm telescope +
infrared filter; bandpass > 700 nm; position end figures 53s.29, 20".4;
image posted at URL http://www.flickr.com/photos/43846774@N02/9554823083/);
20.60, V = 16.06 and I_c = 16.43 (Seiichiro Kiyota, Tsukuba, Japan; T30 0.5-m
iTelescope astrograph + FLI PL-6303E camera at Siding Spring; image posted at
website URL http://meineko.sakura.ne.jp/ccd/PSN_J03035325-3924202.jpg);
20.772, 16.4 (Brimacombe; position end figures 53s.29, 20".3; image posted at
URL http://www.flickr.com/photos/43846774@N02/9558464469/).

     F. Bufano and G. Pignata, Universidad Andres Bello, on behalf of the
Millennium Center for Supernova Science collaboration, report that an optical
spectrogram (range 380-900 nm), obtained on Aug. 26.3 UT at the SOAR telescope
(+ Goodman Spectrograph) at Cerro Tololo, shows that PSN J03035325-3924202 =
SN 2013fe is a type-Ia supernova.  Adopting the recession velocity of the
nearby galaxy, IC 1875 (6092 km/s; Lauberts and Valentijn 1989, Surface
Photometry Catalogue of the ESO-Uppsala Galaxies, Garching bei Muenchen:
European Southern Observatory; via NED), the best fit obtained via GELATO
(Harutyunyan et al. 2008, A.Ap. 488, 383; publicly available at website URL
https://gelato.tng.iac.es) to the 2013fe spectrum is with that of SN 1994D at
ten days after maximum.


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

                         (C) Copyright 2013 CBAT
2013 September 2                 (CBET 3646)              Daniel W. E. Green