Dynamics in the Outer Solar System

DI SISTO R.P.

Jornada; II Workshop of Postgraduate Program in Physics and Astronomy de la UNESP (Brasil); 2023

In recent decades, our understanding of the solar system has undergone significant changes thanks to the discovery of other planetary systems, which have provided us with a broader framework for studying it. Advancements in astronomical observation have enabled us to discover distant populations of small bodies in our solar system, particularly those in the zone of the giant planets, commonly referred to as Centaurs, and those beyond Neptune, known as transneptunian objects (TNOs). As the number of discoveries has grown, the structure of the transneptunian (TN) region has become more apparent, and researchers have identified four sub-populations based on their dynamic features. This structure contains physical and dynamic traces of the gestation, formation, and evolution processes of the solar system. Theoretical development has advanced accordingly, and new theories and proposals are emerging to explain the features of the sub-populations in the TN region.In this talk, I will delve into the current knowledge about small bodies in the outer solar system. I will also review the models and the dynamic that help to explain the observed distributions and their connection with comets and Centaurs.