SIMBAD references

J. L. Prieto, Princeton University, reports that he obtained an optical spectrum (range 370-930 nm) of PSN J20245528-4821173 = SN 2012bl on Mar. 27.28 UT using the du Pont 2.5-m telescope (+ WFCCD) at Las Campanas Observatory. The spectrum is that of a young type-Ia supernova. Cross-correlation with a sample of template supernovae spectra using SNID (Blondin and Tonry 2007, Ap.J. 666, 1024) shows that the best match is to the spectrum of SN 2003du at seven days before maximum light. After correcting the spectrum for the recession velocity of the host galaxy, ESO 234-19, of 5608 km/s (Mathewson and Ford 1996, Ap.J. Suppl. 107, 97), the minimum velocity of the Si II 635-nm absorption feature is measured to be -15000 km/s.