Absorption Coefficient in the 1–0 CO Band Wing Broadened by Helium

Absorption in the 1–0 CO band wing broadened by He at different temperatures is considered within the asymptotic line wing theory, where the absorption coefficient is represented as a sum of the absorption coefficients of individual lines with a special profile at far distances from the line center. The line profile parameters related to the quantum and classical CO–He interaction potentials are found from fitting to experimental data on the absorption in the 1–0 CO band wing and the temperature dependence of the second virial coefficient.