Fig. 14
Fractional abundances, relative to H2, of CnN− (n = 1,3,5) (left panel) and N2H+ (right panel) as a function of radius. Solid lines: calculated using an initial N2 abundance of 2 × 10-4 (relative to H2). Dash-dotted lines: calculated using an initial N2 abundance of 1 × 10-5. In both cases, the SS model with updated shielding was employed.
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