2011CBET.2689....2M

G. H. Marion, Harvard-Smithsonian Center for Astrophysics (CfA), on behalf of the CfA Supernova Group, reports that a spectrum (range 340-740 nm) of PSN J11561431+2521119 = SN 2011bg was obtained on Apr. 2 UT by Marion with the F. L. Whipple Observatory 1.5-m telescope (+ FAST). Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows that 2011bg is a type-Ia supernova of the 1991T-like sub-class at a few days before maximum light. Using a redshift of z = 0.0322, measured from host-galaxy emission lines, the velocity of the Si II 635.5-nm feature is estimated to be approximately 10500 km/s.