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Fig. 5.

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Relation between hydrogen column density in the ISM and galaxy mass and half-mass radius at z = 6. Top panel: column density obtained integrating the column density from the position of the MBH to the host galaxy virial radius (“max” model). Bottom panel: column density obtained excluding the inner 80 pc around the MBH (“outmax80” model). The orange points show the mean column density for each galaxy, with size scaling with Mstar. For a random subset of 24 galaxies we show the column density for 12 different lines of sight, with the grayscale proportional to Mstar, as shown in the color bar.

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