Electronic Telegram No. 2815
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 2011fi IN NGC 1954
     E. Cappellaro, S. Benetti, and A. Pastorello, Istituto Nazionale di
Astrofisica (INAF), Osservatorio Astronomico di Padova; and F. Bufano, INAF,
Osservatorio Astronomico di Catania, on behalf of a larger collaboration,
report that a spectrum of 2011?? (cf. CBET 2800), obtained on Sept. 6.4 UT
with the New Technology Telescope (+ EFOSC2; range 360-930 nm; resolution 1.8
nm) shows it to be a type-II supernova.  The best fit to this spectrum found
by GELATO (Harutyunyan et al. 2008, A.Ap. 488, 383; publicly available at
https://gelato.tng.iac.es) are with spectra of type-II-plateau supernovae at
about 60-80 days post-explosion, adopting a recession velocity of 3130 km/s
for NGC 1954 (de Vaucouleurs et al. 1991, RC3.9; via NED).  Together with
the classical P-Cyg Balmer features, prominent lines of Ca II, Fe II, Ti II,
Sc II, and Ba II are detected.  The presence of a weak [Ca II] emission at
729.1-732.4 nm confirm that the supernova is observed in the late
photospheric phase.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2011 CBAT
2011 September 11                (CBET 2815)              Daniel W. E. Green