Fig. 5
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Radial profiles of the column densities of HCO+(a), DCO+ (b), o-H2D+(c), N2H+(d), and N2D+(e) ions and the ζ2 distribution (f) at 153.3 kyr. The ζ2 radial profile is calculated in circular annuli from the average along the line of sight (as shown in Fig. 2). The CR ionisation models ℋ, ℒ, and ℒ are represented by solid, dashed, and dotted black lines, respectively.
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