2012CBET.3151....2M

D. Milisavljevic, Harvard-Smithsonian Center for Astrophysics, reports that an optical spectrogram (resolution 0.3 nm; range 410-690 nm) of PSN J15574636+1622274 = SN 2012cz, obtained on May 29.3 UT with the 2.4-m Hiltner telescope (+ OSMOS) at MDM Observatory, indicates that it is a type-IIn supernova. The spectrum is dominated by strong H-alpha emission with a complex profile exhibiting a broad component (FWHM around 5000 km/s) and a narrow component with P-Cyg absorption. Weaker H-beta emission shows a similar profile. A redshift of z = 0.036 is estimated from narrow H-alpha and [N II] 654.8- and 658.3-nm nebular emission lines, which is consistent with the redshift of the host galaxy, KUG 1555+165 (Haynes et al. 1997, A.J. 113, 1197).