2005IAUC.8467....2P

A. Pastorello and S. Taubenberger, Max-Planck-Institut fuer Astrophysik (MPIA), Garching; F. Patat, European Southern Observatory; and S. Benetti, A. Harutyunyan, and N. Elias-Rosa, Osservatorio Astronomico di Padova; on behalf of the European RTN collaboration (cf. IAUC 7987), report that inspection of a spectrogram of SN 2005I, taken on Jan. 18.22 UT by M. Alises with the Calar Alto 2.2-m telescope (+ CAFOS; range 330–880 nm), shows it to be a type-II supernova, about 3 months after the explosion. The spectrum is characterized by a red continuum with relatively strong and narrow P-Cyg lines of H, Ca II, Fe II, Sc II, Ba II, and Ti II. The expansion velocities, deduced by the minima of the main features (NED recession velocity of 5443 km/s assumed for the host galaxy), are 4800 km/s for H_alpha, 3300 km/s for Na I D, and 2500 km/s for the Fe II lines (multiplet 42). The supernova spectrum does not show clear evidence of interstellar Na lines at the rest wavelength of the host galaxy, suggesting no significant reddening. A noisy spectrum of SN 2005H is that of a young type-II supernova. The spectrum is dominated by a blue continuum with a broad H_alpha emission flanked by a shallow broad absorption. H_beta, Fe II 501.8- and 516.9-nm, and He I 587.6-nm lines are also present with well-developed P-Cyg profiles. The expansion velocity deduced from the H_alpha minimum is about 12000 km/s, while that deduced from H_beta and He I 587.6-nm is about 10400 km/s (NED recession velocity of 3851 km/s assumed for NGC 838, a starburst galaxy).