Calculations of the spectral shifts and line profiles of alkaline earth atoms in liquid helium environment

► Inclusion of explicit liquid environment on the atomic spectra in liquid helium. ► An accurate description of the line shifts and line profiles. ► Systematic and unified study of the alkaline atoms in liquid helium. ► Separate contributions of the three components of the s → p to the line broadening. ► Determination of the cavity radius created by alkaline atoms in liquid helium.