Fig. 4
Weighted χ2 of the N2H+(1−0) modellings using different standard dyazenilium abundances and radial profiles. Blue curve: constant N2H+ abundance with respect to H2; red curve: constant abundance and modified cloud infall velocity (see text). Green curve: radial N2H+ abundance profile shown in Fig. 3; yellow curve: radial profile with modified cloud infall velocity.
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