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Formation of the Terrestrial Planets from a Narrow Annulus
| Content Provider | Semantic Scholar |
|---|---|
| Author | Hansen, Brad M. S. |
| Copyright Year | 2009 |
| Abstract | We show that the assembly of the Solar System terrestrial planets can be successfully modelled with all of the mass initially confined to a narrow annulus between 0.7 and 1.0 AU. With this configuration, analogues of Mercury and Mars often form from the collisional evolution of material diffusing out of the annulus under the scattering of the forming Earth and Venus analogues. The final systems also possess eccentricities and inclinations that match the observations, without recourse to dynamical friction from remnant small body populations. Finally, the characteristic assembly timescale for Earth analogues is rapid in this model, and consistent with cosmochemical models based on the Hf–W isotopes. The agreement between this model and the observations suggests that terrestrial planet systems may also be formed in ‘planet traps’, as has been proposed recently for the cores of giant planets in our solar system and others. Subject headings: planetary systems: formation; solar system: formation; planets and satellites: individual (Earth, Mars, Mercury, Venus) |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://arxiv.org/pdf/0908.0743v1.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Armitage Bryantiella glutinosa Computer cluster Embryo Friction Gold Information Interaction Isotopes Medical Subject Headings Mercury Planetary scanner Population Remnant Satellite Viruses Simulation System configuration Terrestrial television United States National Aeronautics and Space Administration X86 buying eric |
| Content Type | Text |
| Resource Type | Article |
