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Table 1

List of the galaxy configurations in the initial sample.

R max z max HI H2

2.0 1.0 disk with RH = 1.0 core with Rcore = 0.1
core with Rcore = 0.2
5.0 1.0 disk with RH = 2.5 core with Rcore = 0.2
core with Rcore = 0.5
core with Rcore = 1.0
ring with (Ri,Ro) = (1.5,2.0)
ring with (Ri,Ro) = (2.0,3.0)
10.0 2.0 disk with RH = 5.0 core with Rcore = 0.5
core with Rcore = 1.0
ring with (Ri,Ro) = (2.0,3.0)
ring with (Ri,Ro) = (4.0,6.0)
20.0 4.0 disk with RH = 10.0 core with Rcore = 1.0
ring with (Ri,Ro) = (4.0,6.0)
ring with (Ri,Ro) = (8.0,12.0)

Notes. The first two columns are the maximum radius and half-height of the galactic volume, respectively. The third column gives the scale radius of the exponential distribution of atomic gas (the vertical distribution is exponential with a scale height of 100 pc). The fourth column indicates whether the molecular gas distribution is a uniform core or uniform ring, and gives the corresponding core radius or inner/outer radii (the vertical distribution is uniform with a half-height of 100 pc). All lengths are in kpc units. For each model, 7 molecular gas densities were tested: nH2 = 5, 10, 20, 50, 100, 200, 500 H2 cm-3, for the same peak atomic gas density of nH = 2 H cm-3.

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