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Fig. 4.

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Comparison of UV and [C II] morphology of our galaxy. We show both images covered by the primary beam, M1 and M2 (as indicated in the labels). Left panels: HST UV continuum data (background image) overlaid with the [C II] data obtained with natural weighting (contours). The cyan solid and dashed contours indicate respectively positive and negative levels of 2, 3, 4, 5, 5.5, 6 rms. The crosses indicate the location of the clumps detected in [C II], while the x indicate the location of the clumps detected in UV continuum. The ALMA beam is reported as the cyan ellipse, while the HST PSF is reported as the white-filled ellipse. Middle panels: HST UV continuum data (background image) overlaid with the [C II] data obtained with GILDAS using robust weighting and a parameter of 1 (contours). Contour levels are the same as in the left panels. Right panels: comparison of the available tracers for the galaxy image M1: UV continuum (background), [C II] (cyan contours as in previous stamps), Lyα (orange contours with levels of 3, 5, 10, 18 rms, in the top panel), [O III] (gray contours with levels of 3, 5, 8, 11 rms in the bottom panel). The beams of each tracer are reported in the bottom right panel. All stamps have a size of 3.6″ × 3.6″.

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