2004IAUC.8404....1F

A. V. Filippenko, M. Ganeshalingam, F. J. D. Serduke, and J. L. Hoffman, University of California, Berkeley, report that inspection of CCD spectra (range 330-1000 nm), obtained on Sept. 10 UT with the Shane 3-m reflector at Lick Observatory, reveals that SN 2004dw (IAUC 8392) is of type II, perhaps 2 months past maximum brightness. The H_alpha P-Cyg profile is greatly dominated by the emission component, while the other hydrogen Balmer lines have typical P-Cyg profiles. SN 2004eg (IAUC 8401) is also of type II, but the velocity of the ejecta is extremely low, roughly 500 km/s, as measured from the absorption minima of the P-Cyg profiles. SN 2004dy (IAUC 8395) is a supernova, probably of type II, but the spectrum is rather noisy; relatively broad H_alpha emission seems to be present. SN 2004dk (IAUC 8377) was previously classified by Patat et al. (IAUC 8379) as a type-Ic supernova, but in the Lick spectrum, prominent He I lines have appeared, typical of type-Ib supernovae about 1 month past maximum brightness; indeed, the Lick series of three spectra obtained over the past few weeks shows an evolution more consistent with that of Ib than Ic supernovae.