[IAUC] CBET 1738: 20090325 : SUPERNOVA 2009E IN NGC 4141

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                                                  Electronic Telegram No. 1738
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVA 2009E IN NGC 4141
     H. Navasardyan, S. Benetti, and F. Bufano, Istituto Nazionale di
Astrofisica, Osservatorio Astronomico di Padova; and A. Pastorello, Belfast
University, report that a spectrogram (range 380-780 nm, resolution 2.4 nm)
of 2009E (cf. CBETs 1648 and 1734), obtained on Mar. 24.88 UT with the
Copernico 1.82-m telescope (+ AFOSC), shows it to be an evolved type-II
supernova, probably about 3 months after the explosion.  The spectrum shows
prominent lines of H, Ca II, Na I, Fe II, Ti II, Ba II, and Sc II with P-Cyg
profiles.  In particular, in analogy with SN 1987A, the Ba II features are
unusually strong.  Assuming a recession velocity of 1897 km/s (Theureau et
al. 1998, A.Ap. Suppl. 130, 333; via NED) for the host galaxy, the "GELATO"
spectrum-comparison code (Harutyunyan et al. 2008, A.Ap. 488, 383; available
at https://gelato.tng.iac.es) provides good fits to spectra of type-II-plateau
supernovae towards the end of the plateau phase.  The expansion velocity
deduced from the H-alpha absorption is about 5400 km/s.


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                         (C) Copyright 2009 CBAT
2009 March 25                    (CBET 1738)              Daniel W. E. Green