Left panel: best statistical fit synthetic profile obtained with fodd,Ba = 0.43 and NLTE line shapes for the observed (filled circles) Ba II resonance line at 4554 Å in CS 31082-001 with the residual plots below. For comparison, a line with fodd,Ba = 0.16 (i.e. 0.43−3σ) and residual have been plotted (dash-dot line). The value for Vmac has been optimized to one that minimizes , and the value for [Ba/Fe] remains the same. Right panel: fit for the 4554 Å line, the star shows where the minimum of the fit lies.
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