Self-consistently calculated atmospheric models for different metallicities. All models are constructed for T_eff of the quiet sun model, which is T_eff = 5777 K. Panel a: temperature structure of quiet stellar region vs. column mass. Panel b: temperature change, ΔT, with respect to the solar metallicity value M/H = 0.0 with column mass. The red line indicates τ_Ross = 1 layer for the quiet Sun’s (M/H = 0.0) atmosphere.