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Fig. 4


Examples of broad line wings observed in GOT C+ spectra indicating the presence of a diffuse [C ii] component. To help identify the [C ii] associated with H2 gas the 12CO spectral line profiles are also shown. Only the [C ii] intensities are labeled and CO intensities are scaled down arbitrarily to fit under the [C ii] profiles. The line wings (diffuse [C ii] components) are indicated by arrows. See also the corresponding lV maps in Figs. 2 and 3 for panels a) and c) which show the spatial extent of the line wings (diffuse components).

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