SIMBAD references

Large-scale multiconfiguration Dirac-Hartree-Fock calculations are provided for the n <= 5 states in C-like ions from O III to Mg VII. Electron correlation effects are accounted for by using large configuration state function expansions, built from sets of orbitals with principal quantum numbers n <= 10. An accurate and complete data set of excitation energies, wavelengths, radiative transition parameters, and lifetimes is offered for the 156 (196, 215, 272, 318) lowest states of the 2s²2p², 2s2p³, 2p⁴, 2s²2p3s, 2s²2p3p, 2s²2p3d, 2s2p²3s, 2s2p²3p, 2s2p²3d, 2p³3s, 2p³3p, 2p³3d, 2s²2p4s, 2s²2p4p, 2s²2p4d, 2s²2p4f, 2s2p²4s, 2s2p²4p, 2s2p²4d, 2s2p²4f, 2s²2p5s, 2s²2p5p, 2s²2p5d, 2s²2p5f, and 2s²2p5g configurations in O III (F IV, Ne V, Na VI, Mg VII). By comparing available experimental wavelengths with the MCDHF results, the previous line identifications for the n = 5, 4, 3 - n = 2 transitions of Na VI in the X-ray and EUV wavelength range are revised. For several previous identifications discrepancies are found, and tentative new (or revised) identifications are proposed. A consistent atomic data set including both energy and transition data with spectroscopic accuracy is provided for the lowest hundreds of states for C-like ions from O III to Mg VII.