Nebular Spectroscopy of SN 2005bf

Details Nebular Spectroscopy of SN 2005bf Nebular Spectroscopy of SN 2005bf

Nov 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005atel..646....1s&link_type=abstract

The Astronomer's Telegram, #646

Astronomy and Astrophysics

Astronomy

4

Optical, Novae, Supernovae

Scientific paper

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).

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