Range of T _eff and log( g) covered by the MESA atm tables for τ _s = 100 and solar metallicity. The CK region uses the tables of Castelli & Kurucz (2003), whereas the COND region uses Allard et al. (2001). At lower log( g) and cold regions, we use direct integrations of the Eddington T–τ relation. The green lines show evolutionary tracks of stars, brown dwarfs and giant planets of the noted masses.