Electronic Telegram No. 2730
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 2011df IN NGC 6801
     G. H. Marion, Harvard-Smithsonian Center for Astrophysics (CfA), on
behalf of the CfA Supernova Group, report that a spectrum (range 340-740 nm)
of SN 2011df (= PSN J19273364+5423113; cf. CBET 2729) was obtained on May 28
UT by A. Vaz with the F. L. Whipple Observatory 1.5-m telescope (+ FAST).
Cross-correlation with a library of supernova spectra using the "Supernova
Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows
that 2011df is a type-Ia supernova near maximum light.  The velocity of the
Si II 635.5-nm feature is estimated to be approximately 11900 km/s, using an
estimated redshift of z = 0.0144 (Falco et al. 1999, PASP 111, 438).


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2011 CBAT
2011 May 29                      (CBET 2730)              Daniel W. E. Green