Nebular Spectroscopy of SN 2005bf
ATel #646; A. M. Soderberg (Caltech), E. Berger (Carnegie), E. Ofek and D. C. Leonard (Caltech)
on 1 Nov 2005; 07:12 UT
Credential Certification: Alicia M. Soderberg (ams@astro.caltech.edu)
Subjects: Optical, Supernovae
We observed the peculiar Type Ib SN2005bf (IAUCs 8507 , 8509 , 8520 ) with
the Low Resolution Imaging Spectrometer on the Keck I telescope on
2005 October 31 UT. The SN has clearly entered the nebular phase,
showing strong [O I], [Ca II], [Fe II], Ca II and Na I emission lines.
In addition, the spectrum is dominated by strong, broad (FWHM ~ 3400
km/s) H-alpha emission. We note that such an evolution is highly
unusual for typical Type Ibc supernovae and yet appears similar to
that of the Type Ic SN2001em after ~2.5 years (GCN 2586).
