Upper panel: color map of the temperature distribution in the inner part (up to 20 stellar equatorial radii) of the circumstellar outflowing disk of a critically rotating star with the same parameters as in Fig. 9 (Ṁ = 10⁻⁸ M_⊙ yr⁻¹, α = α₀ = 0.1). The region of increased temperature generated by the viscous heating near the disk midplane extends in this case to a distance of approximately 20 R_eq. The contours mark the temperature levels 3000 K, 5000 K, 10 000 K, 20 000 K (and 35 000 K at the base of the disk). Lower panel: color map of the temperature distribution in the inner part (up to 20 R_eq) of the circumstellar outflowing disk of a critically rotating star with the same parameters as in Fig. 9, with the disk mass-loss rate Ṁ = 10⁻⁹ M_⊙ yr⁻¹, with the constant viscosity parameter α = α₀ = 0.1. The region of increased temperature generated by the viscous heating near the disk midplane is significant to a distance of approximately 15 R_eq. The contours mark the temperature levels 2000 K, 3000 K, 5000 K, 10 000 K (and 20 000 K at the base of the disk).