SIMBAD references

G. H. Marion, R. P. Kirshner, and R. J. Foley, Harvard-Smithsonian Center for Astrophysics (CfA); and P. Challis, Australian National University, on behalf of the CfA Supernova Group, report that a spectrum (range 340-740 nm) of PSN J12271283+0925132 = 2012cg was obtained on May 18 UT by J. Irwin with the F. L. Whipple Observatory 1.5-m telescope (+ FAST). Cross- correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows that the object is a very early type-Ia supernova. A fit is found to the template of SN 1990N at -13 days. Na I D and Ca II H and K interstellar lines are quite strong in the spectrum from 2012cg but the region near 420.0 nm is much shallower than the deep absorption at this wavelength in the template spectrum from SN 1990N at -13 days. The Si II 635.5-nm absorption feature of 2012cg has two components at approximately 21000 and 11000 km/s with the high-velocity component being stronger. Using a redshift of z = 0.001458 for NGC 4424 (Kent et al. 2008, A.J. 136, 713).