Electronic Telegram No. 2178
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Room 209; Dept. of Earth and Planetary
 Sciences; Harvard University; 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbat@cfa.harvard.edu; dwe_green@eps.harvard.edu
URL http://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVA 2010ac IN IC 4352
     I. Agnoletto, Universita Degli Studi di Padova; F. Bufano and S. Benetti,
Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Padova, report
that a spectrogram of 2010ac (cf. CBET 2174), obtained on Feb. 20.32 UT with
the European Southern Observatory's New Technology Telescope (+ EFOSC2; range
394-747 nm; resolution 1.6 nm), shows it to be a type-Ic supernova at about
25 days from maximum.  Assuming a recession velocity of 5071 km/s (from
Willmer et al. 1991, A.J. 101, 57; via NED, http://nedwww.ipac.caltech.edu),
the comparison of the observed spectrum with a library of supernova spectra
via the "GELATO" code (Harutyunyan et al. 2008, A.Ap. 488, 383, available at
website URL https://gelato.tng.iac.es/login.cgi) shows strong resemblance to
those of supernovae 1997B and 1997ei at 25 days after maximum.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2010 CBAT
2010 February 20                 (CBET 2178)              Daniel W. E. Green