2011CBET.2917....2V

S. Valenti, A. Pastorello, S. Benetti, L. Tomasella, F. Bufano, and P. Ochner, Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Padova, on behalf of a larger collaboration, report that a spectrogram of PSN J01055465-1220486 = SN 2011ig, obtained on Nov. 20.89 UT with the 1.82-m Copernico Telescope (+ AFOSC; range 340-790 nm, resolution 2.2 nm), suggests that it is a 1991T-like type-Ia supernova. Cross-correlation with a library of supernova spectra via the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that 2011ig is similar to SN 1999aa (Garavini et al. 2004, A.J. 128, 387) around maximum light. Assuming a redshift of z = 0.065, the ejecta velocity deduced from the minimum of the Si II 635-nm line is about 13500 km/s.