2005IAUC.8557....3M

M. Modjaz, R. Kirshner, and P. Challis, Harvard-Smithsonian Center for Astrophysics, report that a spectrogram (range 340-740 nm) of SN 2005cp (cf. IAUC 8550), obtained by R. Hutchins on June 30.43 UT with the F. L. Whipple Observatory 1.5-m telescope (+ FAST), shows it to be a type-IIn supernova. The spectrum consists of a blue continuum, indicating young age, and Balmer emission lines with a narrow component of about 400 km/s (FWHM) superposed on a weaker and broader component of about 4000 km/s (FWHM), after removing the NED recession velocity of 6616 km/s for the host galaxy (from Falco et al. 1999, PASP 111, 438).