2008CBET.1548....1S

J. M. Silverman, B. E. Cobb, M. McCourt, A. V. Filippenko, and W. Li, University of California, Berkeley, report that inspection of CCD spectra (range 345-640 nm), obtained on Oct. 22 UT with the 3-m Shane reflector (+ Kast) at Lick Observatory, shows that 2008gf (CBET 1537) is a type-II supernova several weeks past maximum brightness. After removing the host- galaxy recession velocity of 7000 km/s, determined from narrow emission lines, the absorption minimum of H-beta is found to be blueshifted by 9300 km/s; cross-correlation with a library of supernova spectra using the "SuperNova IDentification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that 2008gf is most similar to the type-II supernova 1980K at 44 days past maximum. SN 2008gj (CBET 1541) is a type-Ic supernova roughly a week after maximum brightness, in broad agreement with the results reported on CBET 1546; SNID indicates that it is most similar to the type-Ic supernova 1994I at two days past maximum. SN 2008gk (CBET 1544) is a type-Ib/c supernova. SN 2008gl (CBET 1545) is a type-Ia supernova around maximum brightness, in agreement with the results on CBET 1547; after removing the host-galaxy recession velocity of 10198 km/s (Huchra et al. 1999, Ap.J. 121, 287), the absorption minimum of the Si II 635.5-nm feature is found to be blueshifted by about 13800 km/s.