NON-LTE CALCULATIONS FOR THE C-II DOUBLET SYSTEM

New non-LTE calculations for C II, focusing on multiplets 6, 4267.02/4 267.27 Angstrom, and 2, 6578.03/ 6582.85 Angstrom, are presented for e arly-B/late-O stars. The predicted strengths for these transitions, wh ich are prominently used in abundance analysis, are weaker than previo usly published results, and it is explicitly demonstrated that the non -LTE line strengths have converged with respect to model atom complexi ty. Comparison of these results to recent observations gives better ag reement for realistic values of the microturbulent parameter. Error bo unds for the non-LTE predictions are also provided.