2012CBET.3093....2T

L. Tomasella, S. Benetti, E. Cappellaro, P. Ochner, A. Pastorello, M. Turatto, and S. Valenti, Osservatorio Astronomico di Padova, Istituto Nazionale di Astrofisica, obtained a spectrogram of 2012bw on Apr. 25.06 UT with the Asiago 1.82-m Copernico Telescope (+ AFOSC; range 340-820 nm; resolution 2.4 nm). The extracted spectrum, heavily contaminated by narrow emission lines likely originating from a nearby H II region, suggests that this is a type-Ic supernova near maximum. Cross-correlation with a library of supernova spectra via the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows that, assuming a redshift of z = 0.0309 for the host galaxy (average of different estimates listed in the NASA/IPAC Extragalactic Database), 2012bw is similar to several type-Ic supernovae near maximum at a redshift z = 0.031. The redshift coincides with the redshift of the host galaxy, UGC 10282 (average of different estimates listed in the NASA/IPAC Extragalactic Database).