Frequency dependence of imaginary part of Love number for T-1b, for different compositions and temperatures (listed in Table 1). Top: influence of temperature. Bottom: influence of composition. The black curve shows the same composition in both panels (Earth-like composition and a surface temperature of 300 K). The gray curve in the top panel shows the curve corresponding to the reference temperature (here 670 K). The excitation frequency of T-1b is shown as the vertical black dashed line, which corresponds to its orbital frequency. The shaded region illustrates the dependence of the imaginary part on α (bracketed between 0.20 and 0.30). At the frequency of the planet, the dissipation for α=0.20 is higher than for α=0.30.