Exoplanets

  1. Planet Formation and Evolution
    1. Protoplanetary Disk Environment
      1. Disk Structure and Composition
        1. Gas-to-Dust Ratio
          1. Radial Temperature Profile
            1. Surface Density Distribution
              1. Vertical Structure
              2. Disk Evolution and Dispersal
                1. Accretion onto Central Star
                  1. Photoevaporation
                    1. Disk Winds
                      1. Typical Disk Lifetimes
                      2. Chemical Gradients and Snow Lines
                        1. Water Snow Line
                          1. Carbon Monoxide Snow Line
                            1. Other Volatile Snow Lines
                              1. Implications for Planet Composition
                              2. Dust Evolution
                                1. Grain Growth Processes
                                  1. Dust Settling
                                    1. Radial Drift
                                      1. Dust Traps
                                    2. Core Accretion Model
                                      1. Planetesimal Formation
                                        1. Dust Coagulation
                                          1. Streaming Instability
                                            1. Gravitational Collapse
                                              1. Planetesimal Size Distribution
                                              2. Oligarchic Growth Phase
                                                1. Runaway Growth
                                                  1. Isolation Mass
                                                    1. Feeding Zone Depletion
                                                      1. Growth Timescales
                                                      2. Gas Accretion Phase
                                                        1. Critical Core Mass
                                                          1. Kelvin-Helmholtz Contraction
                                                            1. Runaway Gas Accretion
                                                              1. Final Mass Determination
                                                              2. Terrestrial Planet Formation
                                                                1. Late Heavy Bombardment
                                                                  1. Giant Impact Phase
                                                                    1. Atmospheric Acquisition
                                                                      1. Water Delivery
                                                                    2. Gravitational Instability Model
                                                                      1. Disk Fragmentation Conditions
                                                                        1. Toomre Stability Criterion
                                                                          1. Cooling Requirements
                                                                            1. Fragmentation Mass Scale
                                                                            2. Clump Evolution
                                                                              1. Gravitational Collapse
                                                                                1. Angular Momentum Transport
                                                                                  1. Survival vs. Disruption
                                                                                  2. Observational Tests
                                                                                    1. Young Directly Imaged Planets
                                                                                      1. Wide-Orbit Giant Planets
                                                                                        1. Disk Substructure
                                                                                      2. Planetary Migration Processes
                                                                                        1. Type I Migration
                                                                                          1. Disk-Planet Interactions
                                                                                            1. Lindblad and Corotation Torques
                                                                                              1. Migration Timescales
                                                                                                1. Saturation Effects
                                                                                                2. Type II Migration
                                                                                                  1. Gap Opening Criteria
                                                                                                    1. Viscous Evolution
                                                                                                      1. Migration Rates
                                                                                                        1. Stalling Mechanisms
                                                                                                        2. Type III Migration
                                                                                                          1. Rapid Migration
                                                                                                            1. Coorbital Torques
                                                                                                              1. Runaway Conditions
                                                                                                              2. Planet-Planet Scattering
                                                                                                                1. Dynamical Instabilities
                                                                                                                  1. Ejection and Capture
                                                                                                                    1. Eccentricity Excitation
                                                                                                                      1. Hot Jupiter Formation
                                                                                                                    2. Late-Stage Evolution
                                                                                                                      1. Atmospheric Evolution
                                                                                                                        1. Primordial Atmosphere Loss
                                                                                                                          1. Secondary Atmosphere Formation
                                                                                                                            1. Photoevaporation
                                                                                                                              1. Impact Erosion
                                                                                                                              2. Tidal Evolution
                                                                                                                                1. Orbital Circularization
                                                                                                                                  1. Spin Synchronization
                                                                                                                                    1. Tidal Heating
                                                                                                                                      1. Roche Lobe Overflow
                                                                                                                                      2. Magnetic Interactions
                                                                                                                                        1. Star-Planet Magnetic Coupling
                                                                                                                                          1. Atmospheric Stripping
                                                                                                                                            1. Radio Emission
                                                                                                                                            2. Long-Term Stability
                                                                                                                                              1. Secular Evolution
                                                                                                                                                1. Kozai-Lidov Cycles
                                                                                                                                                  1. Chaotic Dynamics
                                                                                                                                                    1. System Disruption

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                                                                                                                                                5. Exoplanet Demographics and System Architecture

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                                                                                                                                                7. Habitability and Astrobiology