2004IAUC.8312....3B

S. Benetti, N. Elias-Rosa, G. Blanc, H. Navasardyan, M. Turatto, and L. Zampieri, Osservatorio Astronomico di Padova; E. Cappellaro, Osservatorio Astronomico di Capodimonte; and M. Pedani, Telescopio Nazionale Galileo (TNG), on behalf of the ERTN (IAUC 7987), obtained a spectrum of SN 2004aw (cf. IAUC 8310, 8311) with the TNG (+ Dolores; range 335-995 nm; resolution 1.4 nm) on Mar. 24.94 UT. The supernova has now evolved to resemble the spectrum of SN 1991T, a few days after maximum, and is therefore classified as type Ia. This also accounts for the fact that the narrow interstellar absorption line seen in the supernova spectrum indicates a reddening of E(B-V) about 0.30 in the host galaxy. The expansion velocity deduced from the Si-II 635.5-nm feature is about 12600 km/s.