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Fig. 1.

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Resolved SRs for the galaxy NGC 6946 within r25 at the resolution of 1 kpc, in logarithmic scale. From left to right: Σdust–ΣH2, Σdust–ΣHI, Σdust–Σtot gas, Σstar–ΣH2, Σstar–Σdust, Σstar–Σtot gas, Σstar–ΣSFR, ΣH2–ΣSFR, Σtot gas–ΣSFR, Σbar–ΣSFR. Two sets of data are shown when the H2 gas is involved according to the two assumptions on XCO (see the legends). The lines are the linear fits to the data: continuum line for the constant XCO (Bolatto et al. 2013), dashed line for the metallicity-dependent XCO (Amorín et al. 2016). Fit parameters are also given in the figures.

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