SIMBAD references

Based on high resolution, low noise spectroscopy in the spectral region from 4200A to 6700A we derived T_eff=7900±200K, logg=4.2±0.15, vsin(i)=12.5(-0.5,+1.5)km/s, and elemental abundances for the rapidly oscillating (ro)Ap star αCir(HD128898, HR5463). We used the spectrum synthesis and the equivalent width technique and confirmed the presence of a magnetic field in αCir. The underabundance of C, N, and O, and the overabundances of rare-earth and some other heavy elements are comparable to other cool Ap-stars. The most important peculiarity is that of Co, which is almost as overabundant as Cr, the most overabundant iron peak element in cool Ap-stars.