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Cited by 664Stellar, planetary, and galactic studiesAstronomy and Astrophysical ResearchHistory and Developments in Astronomy

OBLIQUITIES OF HOT JUPITER HOST STARS: EVIDENCE FOR TIDAL INTERACTIONS AND PRIMORDIAL MISALIGNMENTS

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Albrecht, Simon, Winn, Joshua N., Johnson, John A., Howard, Andrew W., Marcy, Geoffrey W., Butler, R. Paul, Arriagada, Pamela, Crane, Jeffrey D. +5 more·2012·The Astrophysical Journal
DOI 10.1088/0004-637x/757/1/18
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Abstract

We provide evidence that the obliquities of stars with close-in giant planets were initially nearly random, and that the low obliquities that are often observed are a consequence of star–planet tidal interactions. The evidence is based on 14 new measurements of the Rossiter–McLaughlin effect (for the systems HAT-P-6, HAT-P-7, HAT-P-16, HAT-P-24, HAT-P-32, HAT-P-34, WASP-12, WASP-16, WASP-18, WASP-19, WASP-26, WASP-31, Gl 436, and Kepler-8), as well as a critical review of previous observations. The low-obliquity (well-aligned) systems are those for which the expected tidal timescale is short, and likewise the high-obliquity (misaligned and retrograde) systems are those for which the expected timescale is long. At face value, this finding indicates that the origin of hot Jupiters involves dynamical interactions like planet–planet interactions or the Kozai effect that tilt their orbits rather than inspiraling due to interaction with a protoplanetary disk. We discuss the status of this hypothesis and the observations that are needed for a more definitive conclusion.

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  • Many hot Jupiters appear well-aligned with their host stars' spin, but others are dramatically misaligned, even polar and retrograde.

    “Many hot Jupiters appear well-aligned with their host stars' spin, but others are dramatically misaligned, even polar and retrograde (e.g., Albrecht et al. 2012 and references therein).”

    From Origins of Hot Jupiters (2018) · cites this paper as Albrecht et al. 2012

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Cited by

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Authors
Albrecht, S., Winn, J. N., Johnson, J. A., Howard, A. W., Marcy, G. W., Butler, R. P., Arriagada, P., Crane, J. D., Shectman, S. A., Thompson, I. B., Hirano, T., Bakos, G., & Hartman, J. D.
Affiliations
  • Massachusetts Institute of Technology (US)
  • California Institute of Technology (US)
  • University of California, Berkeley (US)
  • Carnegie Institution for Science (US)
  • Pontificia Universidad Católica de Chile (CL)
  • The University of Tokyo (JP)
  • Princeton University (US)
ORCID
Venue
The Astrophysical Journal
Publisher
American Astronomical Society
Published
2012-08-30
Volume
757
Issue
1
Pages
18
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
DOI
10.1088/0004-637x/757/1/18
OpenAlex
W2147406566
Cited by
664
References
2
Citations by year
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FWCI
35.02
Type
journal article
Language
en
Open access
Locations
  • The Astrophysical Journal (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • CaltechAUTHORS (California Institute of Technology) (submittedVersion)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc-sa)
  • arXiv (Cornell University)
Funders
  • National Science Foundation (1108686, 1108595)
  • National Aeronautics and Space Administration (NNX09AB29G, NNX09AB33G)
  • W. M. Keck Foundation
  • California Institute of Technology
  • Japan Society for the Promotion of Science
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
  • Physical Sciences › Physics and Astronomy › Instrumentation › Astronomy and Astrophysical Research
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › History and Developments in Astronomy
Keywords
stellar obliquity, hot Jupiters, Rossiter-McLaughlin effect, tidal interactions, planet-planet interactions, Kozai mechanism, orbital misalignment, retrograde orbits, planet formation

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