[IAUC] CBET 1179: 20071224 : SUPERNOVA 2007ss IN NGC 4617

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                                                  Electronic Telegram No. 1179
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 2007ss IN NGC 4617
     K. Ayani and N. Murakami, Bisei Astronomical Observatory (BAO); and H.
Yamaoka, Kyushu University, report that a low-resolution (R about 1300)
spectrum of 2007ss (cf. CBET 1175), taken on Dec. 23.8 UT with the BAO 1.0-m
telescope, shows deep and wide absorption features of Si II and Fe II, which
suggests that the object is a type-Ia supernova around maximum.  Assuming
the recession velocity of the host galaxy as 4655 km/s (de Vaucouleurs et al.
1991, Third Feference Catalogue of Bright Galaxies), the expansion velocity
(derived from the absorption minimum of Si II 635.5-nm) is 11600 km/s.


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                         (C) Copyright 2007 CBAT
2007 December 24                 (CBET 1179)              Daniel W. E. Green