A Hydrodynamical Model of a Rotating Wind Source and Its Effects on the Collapse of a Rotating Core

Abstract

This work presents three-dimensional hydrodynamical simulations with the fully parallel GAGDET2 code, to model a rotating source that emits wind in order to study the subsequent dynamics of the wind in three independent scenarios. In the first scenario we consider several models of the wind source, which is characterized by a rotation velocityVrotand an escape velocityVesc, so that the models have a radially outward wind velocity magnitudeVradgiven by 1, 2, 4, 6, and 8 timesVrot. In the second scenario, we study the interaction of winds emitted from a binary system in two kinds of models: one in which the source remains during the wind emission and a second one in which all the source itself becomes wind. In the third scenario we consider the interaction of a rotating source that emits wind within a collapsing and rotating core. In this scenario we consider only wind models of the second kind built over a new initial radial mesh, such that the angular velocity of the windΩwis 1, 100, and 1000 times the angular velocity of the coreΩc.