2009CBET.1826....2C

P. Challis, Harvard-Smithsonian Center for Astrophysics (CfA), on behalf of the CfA Supernova Group, reports that a spectrum (range 360-750 nm) of 2009fi (CBET 1821), obtained on June 1 UT by W. Peters with the F. L. Whipple Observatory 1.5-m telescope (+ FAST), shows it to be a type-IIb supernova. Cross-correlation with a library of supernova spectra using the SNID code indicates that the spectrum of 2009fi best resembles the type-IIb supernova 1997dd around maximum light; the redshift, as measured from emission lines in the host galaxy (PGC 50294), is 0.015. Challis adds that a spectrum of 2009fl, also obtained on June 1 by Peters, shows it to be a type-Ia supernova; cross-correlation via SNID indicates that 2009fl is subluminous type-Ia supernova around maximum light.