Dielectronic recombination rate coefficients to the excited states of C II from C III. I. Atomic data

Energy levels, radiative transition probabilities and autionization rates for C II including 1s22l2l'nl" (n = 2–6, l" ≤ (n − 1)] states were calculated by using the multi-configurational Hartree-Fock (Cowan code) method. Autoionizing levels above three thresholds: 1s22s2(1S), 1s22s2p(3P), 1s22s2p(1P) were considered. Branching ratios relative to the first threshold and intensity factors were calculated for satellite lines and dielectronic recombination rate coefficients for C II ions.