[IAUC] CBET 1465: 20080810 : SUPERNOVAE 2008eo, 2008en, 2008ep, 2008eq, AND 2008er

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                                                  Electronic Telegram No. 1465
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 2008eo, 2008en, 2008ep, 2008eq, AND 2008er
     T. N. Steele, M. Ganeshalingam, R. Chornock, and A. V. Filippenko,
University of California, Berkeley, report that inspection of CCD spectra
(range 330-1080 nm), obtained on Aug. 8 UT with the 3-m Shane reflector (+
Kast) at Lick Observatory, shows that 2008eq (CBET 1460) is a type-Ia
supernova near maximum brightness.  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 most similar to the
normal type-Ia supernova 2003du at three days before maximum light.  After
removal of the host-galaxy recession velocity of 17039 km/s (Adelman-McCarthy
et al. 2008, Ap.J. Suppl. 175, 297), the absorption minimum of the Si II
635.5-nm line is found to be blueshifted by 11500 km/s.
     SN 2008eo (CBET 1459) is a normal type-Ia supernova, near maximum
brightness.  After removal of the host-galaxy recession velocity of 4930
km/s (Huchra et al. 1999, Ap.J. Suppl. 121, 287), the absorption minimum of
the Si II 635.5-nm line is found to be blueshifted by 11900 km/s.  SNID
indicates that 2008eo is most similar to the normal type-Ia supernova 2002er
at one day before maximum light.
     SN 2008en (CBET 1459) is a type-IIn supernova with broad emission lines
of the hydrogen Balmer series and He I.  The FWHM of H-alpha is measured to
be 3700 km/s.
     SN 2008ep (CBET 1459) is a normal type-Ia supernova, a week before
maximum brightness.  After removal of the host-galaxy recession velocity of
5995 km/s (Theureau et al. 1998, A.Ap. Suppl. 130, 333), the absorption
minimum of the Si II 635.5-nm line is found to be blueshifted by 13000 km/s.
SNID indicates that 2008ep is most similar to the normal type-Ia supernova
2003du at ten days before maximum light.
     SN 2008er (CBET 1461) is a normal type-Ia supernova a month past maximum
brightness.  SNID indicates that 2008er is most similar to the normal type-Ia
supernova 2004S at 36.2 days past maximum light.


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                         (C) Copyright 2008 CBAT
2008 August 10                   (CBET 1465)              Daniel W. E. Green