SIMBAD references

S. Blondin, M. Modjaz, R. Kirshner, and P. Challis, Harvard-Smithsonian Center for Astrophysics, report that a spectrum (range 350-740 nm) of SN 2006ba (cf. CBET 443, IAUC 8693), obtained on Apr. 2.26 UT by V. Antoniou with the F. L. Whipple Observatory 1.5-m telescope (+ FAST), shows it to be a type-IIb supernova. The spectrum is dominated by broad P-Cyg profiles of He I and of the Balmer series. Cross-correlation with a library of supernova spectra indicates that SN 2006ba is similar to SN 1993J at 34 days past explosion (Matheson et al. 2000, A.J. 120, 1487); a comparison of spectra can be seen at http://cfa-www.harvard.edu/oir/Research/ supernova/spectra/sn2006ba_vssn1993J.gif. Adopting a recession velocity of 5736 km/s for the host galaxy (Mathewson and Ford 1996, Ap.J. Suppl. 107, 97), the maximum absorption in the H_alpha line (rest 656.3 nm) is blueshifted by 13000 km/s.