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5 - Terrestrial Planet Formation

Published online by Cambridge University Press:  27 January 2020

Philip J. Armitage
Affiliation:
Stony Brook University, State University of New York
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Summary

Chapter 5 focuses on the formation of rocky planetary-scale bodies, including terrestrial planets, super-Earths, and giant planet cores. The concepts of gravitational focusing, shear and dispersion dominated encounters, and catastrophic disruption are introduced. A simple "particle in a box" statistical model for planetary growth is described, along with the ideas of orderly, runaway, and oligarchic growth. Factors that determine the planetesimal velocity dispersion, including viscous stirring, dynamical friction, and gas drag, are discussed. The regimes of pebble accretion, the conditions under which it operates, and the pebble accretion rate, are discussed. The standard model for the final assembly of the Solar System's terrestrial planets is outlined.

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Publisher: Cambridge University Press
Print publication year: 2020

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  • Terrestrial Planet Formation
  • Philip J. Armitage, Stony Brook University, State University of New York
  • Book: Astrophysics of Planet Formation
  • Online publication: 27 January 2020
  • Chapter DOI: https://doi.org/10.1017/9781108344227.006
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  • Terrestrial Planet Formation
  • Philip J. Armitage, Stony Brook University, State University of New York
  • Book: Astrophysics of Planet Formation
  • Online publication: 27 January 2020
  • Chapter DOI: https://doi.org/10.1017/9781108344227.006
Available formats
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Save book to Google Drive

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  • Terrestrial Planet Formation
  • Philip J. Armitage, Stony Brook University, State University of New York
  • Book: Astrophysics of Planet Formation
  • Online publication: 27 January 2020
  • Chapter DOI: https://doi.org/10.1017/9781108344227.006
Available formats
×