2004IAUC.8331....2F

A. V. Filippenko, L. Desroches, M. Ganeshalingam, and R. Chornock, University of California, Berkeley; and F. J. D. Serduke, Lawrence Livermore National Laboratory, report that inspection of CCD spectra (range 330-1000 nm), obtained on Apr. 24 UT with the Shane 3-m telescope at Lick Observatory, reveals that SN 2004aw (IAUC 8310, 8311) is of type Ic, similar to SN 1991A (Filippenko 1992, Ap.J. 384, L37), rather than of type Ia as stated in IAUC 8312. SN 2004ax (IAUC 8311) is indeed a supernova, possibly of the 'calcium-rich' type-Ib/Ic variety like SN 2001co and SN 2003H (IAUC 8159). The Ca II near-infrared triplet emission is the only clear feature, although the data are noisy; a higher-quality spectrum should be obtained to verify the classification. SN 2004bh is of type II, perhaps II-L, at an early stage of development. The spectrum is dominated by H_alpha emission, with little corresponding blueshifted absorption. Weak Ca II near-infrared triplet absorption is also visible. SN 2004bi (IAUC 8321) appears to be of type IIb, not Ic as stated on IAUC 8324; the spectrum is similar to that of SN 1996cb (Qiu et al. 1996, A.J. 117, 736). SN 2004bj (IAUC 8329) is a type-Ia supernova, with a spectral-feature age (Riess et al. 1997 A.J. 114, 722) of 2 ± 2 days before maximum light. SN 2004bk is likewise of type Ia, but with a spectral-feature age of 5 ± 2 days after maximum light.