Top: The temperature as a functions of metallicity and gas density. In the left panel, the solid contours delineate the regions where Lyα, metal, and H₂ cooling become dominant. The dashed contours delineate PE-, CR-, and H₂-heating-dominated regions. The contours in the right panel are the cooling times in Myr. Bottom: The temperature (left) and gas density (right) as a functions of metallicity and pressure. The WNM, CNM, and multiphase regions are indicated. A 3D interactive surface plot is presented in the online version (see also https://plot.ly/~sb2580/47). (An interactive version of this figure is available.)

An interactive version of this figure is available in the online journal.