Top. Minimum gas mass for star formation as a function of the DM halo mass M_DM. The thick blue lines show the data for the reference model (quasi-isothermal DM halo, spatially uniform T_g, and α = 0.9), while the thin red lines show the effect of a smaller spin parameter α = 0.5. The solid lines (of corresponding color) refer to models with T_g = 10⁴ K, while the dashed lines show models with gas temperature according to Eq. (19). Numbers denote the corresponding gas temperatures for every model. The dotted line gives the available baryonic mass M_b as suggested by the ΛCDM theory with Ω_b/Ω_m = 0.17. Bottom. Ratio versus M_DM for the same models as in the top panel.