aa48423-23-fig1-1

A scatter plot with baryonic potential in log-scale on the x-axis, ranging between 8 and 11, and gas metallicity on the y-axis, ranging between 8.2 and 8.6. The points show a positive correlation that flattens out towards higher potentials. A curve of best fit is plotted on top of the points, and there is significant scatter around this line. Each point is color-coded according to stellar metallicity on a gradient from purple to yellow. Generally, points go from purple to yellow as you follow the line of best fit. There are also two vertical dashed red lines at a potential of 8.8 a 9.0. Points lying between these dashed lines are also plotted in an inset panel on the bottom right, which plots gas metallicity against stellar metallicity. The points in the panel show a positive correlation with a Pearson's correlation coefficient of 0.77.


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