Fig. 1.
Using NGC 1808 as an example in our data analysis. Top left: 12CO(J = 1 − 0) moment 0 map of NGC 1808. Top right: relation of the velocity dispersion and 12CO(J = 1 − 0) luminosity surface density of NGC 1808. Bottom left: relation of the 12CO(J = 1 − 0) luminosity surface density and SFR surface density of NGC 1808. Bottom right: relation of the velocity dispersion and SFR surface density of NGC 1808. Different star-formation regions are marked in different numbers. The orthogonal distance regression fittings for different relations are displayed in orange lines.
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