Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
Figure 5
Temperature-density relation, for the overdensity histories as given in (4) (thick solid line). In addition two extreme scenarios for the overdensity history are shown. First, all gas is compressed or decompressed to its final overdensity, , at the very beginning, that is, before reionisation takes place (dashed-dotted line). Secondly, all gas evolves at cosmic mean density until and is then instantaneously compressed or decompressed to its final overdensity. The latter clearly results in an adiabatic relation (dash-dotted line). Finally, the distribution of the SPH-particles in the simulation is shown.
