[IAUC] CBET 1846: 20090616 : SUPERNOVAE 2009fv AND 2009gf

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                                                  Electronic Telegram No. 1846
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVAE 2009fv AND 2009gf
      A. Somero, O. Smirnova, G. Micheva, J. Kajava, E. Kankare, J. Telting,
R. Karjalainen, and S. Mattila, on behalf of the NORDFORSK/Nordic-Baltic
astronomy summer school; and A. Pastorello, Queen's University, Belfast,
report that they obtained low-resolution spectra of 2009fv (cf. CBET 1834)
and 2009gf (cf. CBET 1844) on June 15.9 UT with the Nordic Optical Telescope
(+ ALFOSC; range 320-910 nm).  The spectrum of 2009fv shows it to be a type-Ia
supernova around maximum light; adopting a host-galaxy recession velocity of
8784 km/s (Wegner et al. 1999, MNRAS 305, 259), the Si II 635.5-nm absorption
minimum is measured to be blue-shifted by roughly 10400 km/s.  The spectrum of
2009gf shows it to be also a type-Ia supernova a few days before maximum;
adopting a host-galaxy recession velocity of 5553 km/s (de Vaucouleurs et al.
1991, Third Reference Catalogue of Bright Galaxies, ver. 3.9), the Si II
635.5-nm absorption minimum is measured to be blue-shifted by roughly 10500
km/s.


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                         (C) Copyright 2009 CBAT
2009 June 16                     (CBET 1846)              Daniel W. E. Green