Fig. 11
[O iii] emission from the central part of Ou4 vs. 22 μm emission. The colour scale of the [O iii] image is logarithmic. The contour map is the 22 μm emission of the W4-filter image from 89.375 to 92.5 digital numbers (DN) with linear steps of 0.446 DN (i.e., from 2.471 to 2.557 mJy/arcsec2 with linear steps of 0.012 mJy/arcsec2). The linear scale is shown in the bottom-right corner.
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