2004IAUC.8322....2M

Further to IAUC 8321, T. Matheson et al. report that a spectrum of SN 2004bc (cf. IAUC 8315), obtained by J. Huchra on Apr. 12.26 UT with the Mt. Hopkins 1.5-m telescope, shows it to be a type-Ia supernova, a few days before maximum. Adopting the NED recession velocity of 7221 km/s for the host galaxy, the supernova expansion velocity is 11700 km/s for Si II (rest 635.5 nm). The spectrum is highly reddened and shows a strong narrow Na I D absorption at the velocity of the host galaxy with an equivalent width of 0.2 nm. The dust maps of Schlegel et al. (1998, Ap.J. 500, 525) indicate a low value for Galactic reddening of E(B-V) = 0.065. A spectrogram of SN 2004be (cf. IAUC 8317), obtained by Huchra on Apr. 13.23, shows it to be a type-II supernova; adopting the NED recession velocity of 2282 km/s for the host galaxy, the expansion velocity derived from the minimum of the H_beta line is 9800 km/s.