Fig. 3.
Maximum density of the HI gas (left panel) and its thickness (right panel) based on simple conversion from HI data to the Gaussian HI gas distribution using the rotation curve. Black lines show galactocentric distances, starting from 10 kpc (the lowest line) with the 1 kpc increment. Densities are in at cm−3, thicknesses are in kpc. The supershell GS242-03+37 is clearly visible on both maps.
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