Spectral synthesis of inner gaseousprotoplanetary disks with PHOENIX

摘要

The inner gaseous regions of protoplanetary disks are of special interest in the formationand evolution of planets and stars because they are the likely birthplaces of planets and serve as theaccretion reservoir for young stars. The study of inner disks may give rise to a better understandingof the dynamics, physical and chemical structure, and gas content of the region. As a first step, wehave developed a 1+1D disk radiative transfer package as an extension to the well established multi-purpose stellar atmosphere program PHOENIX. The solution of the equations of momentum andenergy conservation as well as the radiative transfer equation is adopted for the physical conditionsin and the geometry of disks. Irradiation by the central star is treated in detail. Comparison of ourmodels with high-resolution infrared spectra will enable us to constrain the structure, dynamics, andgas content of disks, and thus give new insights on the physical processes governing star and planetformation. Additionally, we present our current construction site: a 3D radiative transfer code foraccretion disks.