Radiative Equilibrium Calculations with Anisotropic Scattering and Estimation of Dust Size in a Circumstellar Disk

Abstract

T Tauri stars are thought to be progenitors of planetary systems like the solar system. Structure of them may determine the final state of the planetary system. It has been deduced by calculating model spectral energy distributions (SEDs) and images and by comparing them with observations. However, anisotropic scattering by dust particles has not been incorporated adequately in previous work. Here, we examined to what extent the anisotropic scattering (Mie scattering) may affect SEDs and images. We found that this effect is not negligible. Also, it is suggested that our radiative equilibrium calculations can be used to estimate the inclination of and the dust sizes in the disk.