Challenges in Planet Formation
arXiv:1610.07202 · doi:10.1002/2016JE005088
Abstract
Over the past two decades, large strides have been made in the field of planet formation. Yet fundamental questions remain. Here we review our state of understanding of five fundamental bottlenecks in planet formation. These are: 1) the structure and evolution of protoplanetary disks; 2) the growth of the first planetesimals; 3) orbital migration driven by interactions between proto-planets and gaseous disk; 4) the origin of the Solar System's orbital architecture; and 5) the relationship between observed super-Earths and our own terrestrial planets. Given our lack of understanding of these issues, even the most successful formation models remain on shaky ground.
Invited review in JGR-planets. In press Changes with respect to the version posted on Oct. 23 are a few typos and the correction of the caption of Fig. 2, where the description of the different colors was messed up
References in corpus (45)
- Most 1.6 Earth-Radius Planets are not Rocky
- Protoplanetary Disk Structures in Ophiuchus
- Building Terrestrial Planets
- Origins of Eccentric Extrasolar Planets: Testing the Planet-Planet Scattering Model
- Migration and the formation of systems of hot super-Earths and Neptunes
- A New Planet Around an M Dwarf: Revealing a Correlation Between Exoplanets and Stellar Mass
- Global simulations of protoplanetary disks with ohmic resistivity and ambipolar diffusion
- The structure of protoplanetary discs around evolving young stars
- Halting Type I planet migration in non-isothermal disks
- Make Super-Earths, Not Jupiters: Accreting Nebular Gas onto Solid Cores at 0.1 AU and Beyond
- Magnetospheric accretion-ejection processes in the classical T Tauri star AA
- How to form planetesimals from mm-sized chondrules and chondrule aggregates
- Grain Retention and Formation of Planetesimals near the Snow Line in MRI-driven Turbulent Protoplanetary Disks
- Highly Siderophile Elements in the Earth's Mantle as a Clock for the Moon-forming Impact
- Planets around evolved intermediate-mass stars. I. Two substellar companions in the open clusters NGC 2423 and NGC 4349
- Ocean Planet or Thick Atmosphere: On the Mass-Radius Relationship for Solid Exoplanets with Massive Atmospheres
- Evolution of Protoplanetary Discs with Magnetically Driven Disc Winds
- Close-in planetesimal formation by pile-up of drifting pebbles
- A decreased probability of habitable planet formation around low-mass stars
- An ancient extrasolar system with five sub-Earth-size planets
- Hall-effect Controlled Gas Dynamics in Protoplanetary Disks: II. Full 3D Simulations toward the Outer Disk
- On the formation of planetary systems via oligarchic growth in thermally evolving viscous discs
- The Migration of Gap-Opening Planets is not Locked to Viscous Disk Evolution
- Migration of massive planets in accreting disks
- Observable Consequences of Planet Formation Models in Systems with Close-in Terrestrial Planets
- Dust sedimentation and self-sustained Kelvin-Helmholtz turbulence in protoplanetary disk mid-planes. I. Radially symmetric simulations
- Constraints on resonant-trapping for two planets embedded in a protoplanetary disc
- Hot super-Earths and giant planet cores from different migration histories
- Can dust coagulation trigger streaming instability?
- Vertical shear instability in accretion disc models with radiation transport
- Jupiter's Decisive Role in the Inner Solar System's Early Evolution
- Lunar and Terrestrial Planet Formation in the Grand Tack Scenario
- A Long-Period Jupiter-Mass Planet Orbiting the Nearby M Dwarf GJ849
- Gas giant planets as dynamical barriers to inward-migrating super-Earths
- A reassessment of the in situ formation of close-in super-Earths
- A representative particle approach to coagulation and fragmentation of dust aggregates and fluid droplets
- Short dissipation times of proto-planetary discs - an artifact of selection effects?
- Particle dynamics in discs with turbulence generated by the vertical shear instability
- Warps, bending and density waves excited by rotating magnetized stars: results of global 3D MHD simulations
- Disk Dispersal and Planet Formation Time Scales
- Formation, tidal evolution and habitability of the Kepler-186 system
- Is the Grand Tack model compatible with the orbital distribution of main belt asteroids?
- Stellar irradiated discs and implications on migration of embedded planets III: viscosity transitions
- Vulcan Planets: Inside-Out Formation of the Innermost Super-Earths
- Jovian Early Bombardment: planetesimal erosion in the inner asteroid belt