Image Details
Caption: Fig. 3.
Logarithmic plots of column densities. The error bars represent 20% uncertainties in N. Top: N(K I) vs. N(CH). Bottom: N(Ca I) vs. N(K I). The solid line presents the best fit with a slope of ﹩0.60\pm 0.04﹩, which may suggest increasing calcium depletion in denser gas.
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