A brief overview of planet formation

TL;DR

This paper reviews current theories and observations of planet formation, highlighting the roles of disk physics, planet migration, and dynamical evolution in shaping planetary systems.

Contribution

It provides a comprehensive overview of recent advances in planet formation theory, integrating observational data, laboratory experiments, and theoretical models.

Findings

Inclusion of disk turbulence and radial drift in models.

Recognition of post-formation dynamical evolution's importance.

Central role of N-body collisional growth processes.

Abstract

The initial conditions, physics, and outcome of planet formation are now constrained by detailed observations of protoplanetary disks, laboratory experiments, and the discovery of thousands of extrasolar planetary systems. These developments have broadened the range of processes that are considered important in planet formation, to include disk turbulence, radial drift, planet migration, and pervasive post-formation dynamical evolution. The N-body collisional growth of planetesimals and protoplanets, and the physics of planetary envelopes - key ingredients of the classical model - remain central. I provide an overview of the current status of planet formation theory, and discuss how it connects to observations.