2005CBET..150....1F

A. V. Filippenko, R. J. Foley, D. Pooley, and R. Chornock, University of California, Berkeley, report that inspection of CCD spectra (range 320-930 nm), obtained on May 11 UT with the Keck I 10-m telescope (+ LRIS), shows that SN 2005bi (IAUC 8511) is of type II, perhaps 1.5-2 months after the explosion. Lines of H I, Fe II, Ca II, and other species are present – in most or all case with well-developed P-Cyg profiles. Spectra of SN 2005bu (IAUC 8519) show it to be of type Ia, roughly 3-4 weeks past maximum brightness.