Electronic Telegram No. 1878
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)
URL http://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVAE 2009ha, 2009he, 2009hf, 2009hi, 2009hj, AND 2009hk
     J. M. Silverman, M. T. Kandrashoff, and A. V. Filippenko, University of
California, Berkeley, report that inspection of CCD spectra (range 340-1020
nm), obtained on July 16 UT with the 3-m Shane reflector (+ Kast) at Lick
Observatory, shows that SN 2009ha (CBET 1865) is a type-Ib supernova near
maximum light.  SN 2009he (CBET 1868) is a type-Ia supernova, likely a
1991bg-like (e.g., Filippenko et al. 1992, A.J., 104, 1543) event; after
removing the host-galaxy recession velocity (9188 km/s; Falco et al. 1999,
The Updated Zwicky Catalog), the absorption minimum of the Si II 635.5-nm
feature is found to be blueshifted by about 9600 km/s.  Cross-correlation
with a library of supernova spectra using the "SuperNova IDentification"
code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that it is
about one week past maximum light.  SN 2009hf (CBET 1869) is a type-IIP
supernova.  After removing the host-galaxy recession velocity (3910 km/s;
Chengalur et al. 1993, Dynamics of Binary Galaxies), the absorption
minimum of the H-alpha line is found to be blueshifted by about 10100 km/s,
although the emission component greatly dominates.
     SN 2009hi (CBET 1872) is a normal type-Ia supernova.  After removing
the host-galaxy recession velocity (12327 km/s; Wegner et al. 1999, The
Peculiar Motions of Early-Type Galaxies in Two Distant Regions), the
absorption minimum of the Si II 635.5-nm feature is found to be blue-
shifted by about 12000 km/s.  SNID indicates that it is at maximum light.
     A low-signal-to-noise ratio spectrum with lots of host galaxy
contamination indicates that SN 2009hj (CBET 1873) is a type-II supernova.
After removing the host-galaxy recession velocity (11378 km/s), as
determined from narrow emission lines, the absorption minimum of the
H-alpha line is found to be blueshifted by about 5400 km/s.  SN 2009hk
(CBET 1875) is normal type-Ia supernova, and SNID indicates that it is
about one month past maximum light.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2009 CBAT
2009 July 16                     (CBET 1878)              Daniel W. E. Green