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Fig. 13

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Line luminosity ratio of o–H2 2.12 µm and [Ol] 0.63 µm as a function of the [Ol] 0.63 µm luminosity. The observational data points and models shown are the same as in Fig. 5. We omit the one DIANA model with the lowest line luminosities for clarity. The upper limits for the line ratios (downward arrows) are a consequence of the o–H2 2.12 µm line luminosity upper limits.

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