2010CBET.2173....1K

I. K. W. Kleiser, J. M. Silverman, A. J. L. Morton, and A. V. Filippenko, University of California, Berkeley, report that inspection of a CCD spectrum (range 340-1020 nm), obtained on Feb. 14 UT with the 3-m Shane reflector (+ Kast) at Lick Observatory, shows that 2010Z (CBET 2169) is a type-II supernova. After removal of the host-galaxy recession velocity of 7600 km/s, determined from narrow emission lines, the absorption minimum of the H-alpha line is found to be blueshifted by 8700 km/s and is much weaker than the emission component. Cross-correlation with a library of supernova spectra using the "SuperNova IDentification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that 2010Z is within a week or two of maximum light.