2009CBET.1665....1S

M. Stritzinger, Las Campanas Observatory (LCO), on behalf of the Carnegie Supernova Project, reports that he obtained spectra (range 380-940 nm) of 2009I (cf. CBET 1660), 2009J (cf. CBET 1661), and 2009K (cf. 1663) on Jan. 17.1 UT with the 6.5-m Magellan II (Clay) telecope (+ LDSS3). The spectrum of 2009I reveals it to be a young type-Ia supernova. Comparison with a library of spectra via the "Supernova Identification"code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) suggests that 2009I is very similar to SN 2003du at 7-10 days before maximum; adopting a host-galaxy recession velocity of 7845 km/s (Catinella et al. 2005, A.J. 130, 1037) for the host galaxy (NGC 1080), Si II is measured to be blue-shifted by roughly 11000 km/s. Supernova 2009J appears to be a peculiar type-Ia supernova; with the aid of SNID, he finds this event to be most similar to SN 2005hk a few days past maximum. Supernova 2009K is a young type-II event soon after explosion; its spectrum exhibits shallow P-Cyg profiles of the Balmer series and He I (587.6 nm).