2011CBET.2683....2A

J. Anderson and F. Forster, Universidad de Chile; and G. Pignata, Universidad Andres Bello, on behalf of the Millennium Center for Supernova Science, report on an optical spectrogram (range 355-896 nm) of PSN J11352709-3800549 = SN 2011bb that was obtained on Mar. 28.07 UT with the SOAR telescope (+ Goodman HTS). The spectrum shows 2011bb to be a type-Ia supernova at about two weeks after maximum light. Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) provides good matches with SN 1995D at +14 days.