Comparison of radiative and gravitational forces in models with self-consistent (blue lines) and constant (green lines) dust temperature. Cloud models are M4 (left) and M7 (right), and radiative forces were calculated for cluster models C3, C5 , and C7 and the D2 dust model. The radial dust temperature distributions follow the temperatures shown in Fig. 10. The ratio ζ is shown below (purple) for the variable dust temperature models.