Cited by 173Stellar, planetary, and galactic studiesAstro and Planetary ScienceHistory and Developments in Astronomy

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CALIBRATION OF EQUILIBRIUM TIDE THEORY FOR EXTRASOLAR PLANET SYSTEMS

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Hansen, Brad M. S.·2010·The Astrophysical Journal

Abstract

We provide an "effective theory" of tidal dissipation in extrasolar planet systems by empirically calibrating a model for the equilibrium tide. The model is valid to high order in eccentricity and parameterized by two constants of bulk dissipation—one for dissipation in the planet and one for dissipation in the host star. We are able to consistently describe the distribution of extrasolar planetary systems in terms of period, eccentricity, and mass (with a lower limit of a Saturn mass) with this simple model. Our model is consistent with the survival of short-period exoplanet systems, but not with the circularization period of equal mass stellar binaries, suggesting that the latter systems experience a higher level of dissipation than exoplanet host stars. Our model is also not consistent with the explanation of inflated planetary radii as resulting from tidal dissipation. The paucity of short-period planets around evolved A stars is explained as the result of enhanced tidal inspiral resulting from the increase in stellar radius with evolution.

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  • Tidal heating shuts off as the orbit nears circularization, so stellar irradiation mechanisms could take over at that point.

    “Tidal heating shuts off as the orbit nears circularization (e.g., Leconte et al. 2010, Hansen 2010), so stellar irradiation mechanisms could take over at that point.”

    From Origins of Hot Jupiters (2018) · cites this paper as Hansen 2010

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Metadata

Authors
Hansen, B. M. S.
Affiliations
University of California, Los Angeles (US)
Corresponding author
Hansen, Brad M. S.
Venue
The Astrophysical Journal
Published
2010-10-08
Volume
723
Issue
1
Pages
285-299
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
OpenAlex
W4237204345
Cited by
173
References
1
Citations by year
2026: 11 · 2025: 11 · 2024: 3 · 2023: 5 · 2022: 13 · 2021: 11 · 2020: 11 · 2019: 10 · 2018: 11 · 2017: 12 · 2016: 10 · 2015: 11 · 2014: 11 · 2013: 10 · 2012: 20
FWCI
7.69
Type
journal article
Language
en
Open access
Locations
  • The Astrophysical Journal (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
  • Physical Sciences › Earth and Planetary Sciences › Space and Planetary Science › Astro and Planetary Science
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › History and Developments in Astronomy
Keywords
equilibrium tide, tidal dissipation, exoplanets, orbital circularization, stellar evolution, A-type stars, short-period planets, binary stars, eccentricity

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