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Fig. 11

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Expected gas line fluxes as a function of gas-to-solid mass ratio for either a low-PAH abundance (thin lines) or a high-PAH abundance (thick lines). The horizontal lines denote the PACS 3σ upper-limits and do not include the 30% flux calibration uncertainty. The gas-to-solid mass ratios assume a solid mass of 0.164 M.

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