2005IAUC.8486....3F

A. V. Filippenko and R. J. Foley, University of California, Berkeley, report that inspection of CCD spectra (range 300-920 nm), obtained on Feb. 12 UT with the Keck I 10-m telescope (+ LRIS), shows that SN 2005ae (IAUC 8480) is probably of type IIb. The prominent He I series is indicative of a type-Ib supernova; however, there is an additional absorption line that corresponds to H_alpha at a velocity similar to that of the He I lines, which indicates that the progenitor had a low-mass hydrogen envelope. SN 2004gw is indeed of type Ia, as speculated by Foley et al. (IAUC 8465), and not of type Ic. Extremely noisy spectra of SN 2005T (IAUC 8473) reveal it to be of type II, with broad H_alpha and Ca II emission.