Tidal evolution of star-planet systems

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Abstract

The equilibrium tide model in the weak friction approximation is used by the binary star and exoplanet communities to study the tidal evolution of short-period systems, however, each uses a slightly different approach which potentially leads to different conclusions about the timescales on which various processes occur. Here we present an overview of these two approaches, and show that for short-period planets the circularization timescales they predict differ by at most a factor of a few. A discussion of the timescales for orbital decay, spin-orbit synchronization and spin-orbit alignment is also presented.

Original languageEnglish
Title of host publicationThe Astrophysics of Planetary Systems: Formation, Structure, and Dynamical Evolution
Pages238-242
Number of pages5
Volume6
EditionS276
DOIs
Publication statusPublished - Oct 2010

Publication series

NameProceedings of the International Astronomical Union
NumberS276
Volume6
ISSN (Print)17439213
ISSN (Electronic)17439221

Keywords

  • Celestial mechanics
  • Methods: analytical
  • Planetary systems
  • Planets and satellites: dynamical evolution and stability
  • Planets and satellites: formation

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