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Fig. 3

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N1 integrated over the atomic region (dashed line), N1 integrated over the molecular region (dotted line), N1,tot (solid line) as functions of G0nH for a static and stationary approach. Black lines are for Eq. (9) of H2 self-shielding, and red lines are for Eq. (5), both from Draine & Bertoldi (1996).

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