Dependence of the eigenvalues on the central energy densities of both components for a given baryonic EoS. The left (right) figure corresponds to a DM mass of 100 MeV (10 MeV) and a DM fraction of 2% (10%). The colors in the top panels represent the mass contained within the baryonic radius, while those in the bottom panels represent the total gravitational mass. The shaded gray region appears where the shown eigenvalue is negative. The dashed line marks zero on the y-axis.