2005CBET..135....1M

N. Morrell, M. Hamuy, G. Folatelli, and C. Contreras, Carnegie Supernova Project, report that spectroscopic observations (range 380-930 nm) of SN 2005bf (cf. IAUC 8507) and SN 2005bb (cf. IAUC 8504) were obtained on Apr. 7.08 and 7.23 UT, respectively, with the Las Campanas 2.5-m du Pont telescope (+ WFCCD spectrograph). SN 2005bf is a type-Ic supernova a few days before maximum light, with very strong Si II 635.5-nm and a weak He I 587.6-nm P Cyg line, among other features. SN 2005bb is of type II, highly reddened, with strong P-Cyg profiles in H-alpha and Ca II 857.9-nm, and weak He I 587.6-nm. The expansion velocity, derived from the minimum of the H-alpha absorption, is 6000 km/s, assuming for the host galaxy the recession velocity given in the NED database.