SIMBAD references

S. Valenti, S. Benetti, L. Tomasella, and P. Ochner, Osservatorio Astronomico di Padova, Istituto Nazionale di Astrofisica; and A. Pastorello, Dipartimento di Astronomia, Universita di Padova, on behalf of a larger collaboration, report that a spectrogram (range 360-810 nm; resolution 2.2 nm) of PSN J18121900+2131150 = SN 2011gc, obtained on Sept. 25.86 UT with the Ekar-Copernico 1.82-m telescope (+ AFOSC), shows it to be a type-IIP supernova. Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) suggests a normal type-II-plateau supernova about 2-3 months after explosion (the deduced redshift is 0.016). The spectrum shows intense P-Cyg lines typical of the H recombination phase. Together with prominent H_alpha, lines of Fe II, Ti II, Sc II, Ba II, and Na I D are clearly visible. The expansion velocity derived from the H_alpha minimum is about 5400 km/s.