Electronic Telegram No. 1802
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
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SUPERNOVA 2009ee IN IC 2738
     A. Harutyunyan, G. Andreuzzi, Telescopio Nazionale Galileo (TNG); F.
Bufano and S. Benetti, INAF, Osservatorio Astronomico di Padova, report that
a spectrogram (range 350-780 nm, resolution 1.1 nm) of 2009ee (cf. CBET 1795),
obtained on May 13.98 UT with the TNG (+ DOLORES), shows it to be a type-Ia
supernova about two weeks after maximum.  Assuming a recession velocity of
10504 km/s (Smith et al. 2000, MNRAS 313, 469; via NED) for the host galaxy,
the "GELATO" spectrum-comparison code (Harutyunyan et al. 2008, A.Ap. 488,
383; publicly available at https://gelato.tng.iac.es) provides good fits to
spectra of type-Ia supernovae 2004eo (Pastorello et al. 2007, MNRAS 377, 1531)
and 2005cf (Garavini et al. 2007, A.Ap. 471, 527) at 11 and 13 days after
maximum, respectively.  The fit with the SN 2004eo spectrum can be seen at the
following URL:  https://gelato.tng.iac.es/plots/plot_7NQfdJZTQ811.png.  The
expansion velocity deduced from the Si II 635.5-nm absorption component is
about 9500 km/s.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2009 CBAT
2009 May 14                      (CBET 1802)              Daniel W. E. Green