Structure and Evolution of the Saturn’s Subnebula – Implications for the Formation of Titan

Introduction: Recent models of giant planets formation include migration in a solar nebula whose evolution is ruled through viscosity and photoevaporation [1]. These models allow to form planets in a timescale well within observed disks lifetimes. Here, we utilize some results presented on Saturn formation [2] to calculate the structure of its surrounding subnebula, in a way consistent with the formation process of the planet, by using a two-dimensional evolutionary turbulent alpha-model. In this context, the evolution of the subnebula is ruled by the last phase of Saturn’s formation. We also discuss the implications for the formation of Titan in the Saturnian subnebula.