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Fig. A.1.


Example of rotation curve decomposition for NGC 3992. Left panel: observed rotation curve (black points) with our best model (red solid curve), decomposed into the contributions from stars (gold dashed curve), gas (blue dotted curve), and dark matter (purple dot-dashed curve). Right panel: posterior distributions of the three parameters of the model: halo mass, halo concentration, and mass-to-light ratio of the stellar disc. Similar plots for all the other galaxies in our sample can be found online at

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