2005IAUC.8611....3F

R. J. Foley and A. V. Filippenko, University of California at Berkeley; and T. Matheson, National Optical Astronomy Observatory, report that inspection of CCD spectra (range 470-990 nm), obtained on Oct. 5 UT with the Keck II 10-m telescope (+ DEIMOS), shows that SN 2005er is of type Ia, resembling SN 1991bg (Filippenko et al. 1992, A.J. 104, 1543) near maximum brightness. Spectra of SN 2005es show that it is a young type-II supernova. Spectra of SN 2005ds (IAUC 8592) confirm that it is of type IIn, as suspected previously (IAUC 8594).