SIMBAD references

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 low-signal-to-noise spectrogram of PSN J23181655+0015431 = SN 2011hv, obtained on Nov. 19.72 UT with the 1.82-m Copernico Telescope (+ AFOSC; range 340-790 nm, resolution 2.2 nm), indicates that it is a type-Ia supernova around maximum. Cross- correlation with a library of supernova spectra via the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that it is similar to SN 1999aw (Strolger et al. 2002, A.J. 124, 2905) around maximum. Adopting a recessional velocity of 8938 km/s (Impey et al. 1996, Ap.J. Suppl. 105, 209; via NED), the ejecta velocity deduced from the minimum of the Si II 635-nm line is about 12000 km/s.