SIMBAD references

R. J. Foley and A. V. Filippenko, University of California, Berkeley, report that inspection of CCD spectra (range 300-950 nm), obtained on Nov. 23 UT with the Keck I 10-m telescope (+ LRIS), shows that 2006ot is a type-Ia supernova with a spectral-feature age (Riess et al. 1997, A.J. 114, 722) of -4.7 ± 2 days relative to maximum light. Adopting a recession velocity of 15871 km/s (da Costa et al. 1998, A.J. 116, 1), the minimum of the Si II 635.5-nm absorption is found to be blueshifted by 16800 km/s. The object has a prominent ultraviolet excess relative to most type-Ia supernovae.