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Fig. 11

image

Cooling curves for H2, CO, and H2O using the analytical cooling functions of Neufeld & Kaufman (1993). The colored lines are the cooling rates, and their values are shown on the left axis. The black line is for temperature (right axis). The highlighted parts on the cooling curves are for the temperature range 300–400 K. The H2 density and column densities are as shown in Fig. 9.

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