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Title: The Turbulent Origin of Spin-Orbit Misalignment in Planetary Systems

Journal Article · · Monthly Notices of the Royal Astronomical Society
DOI:https://doi.org/10.1093/mnras/stv836· OSTI ID:1241942
 [1];  [1];  [2];  [3];  [4]
  1. Univ. of California, Berkeley, CA (United States)
  2. Jackson, WY (United States)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  4. Univ. of California, Berkeley, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

The turbulent environment from which stars form may lead to misalignment between the stellar spin and the remnant protoplanetary disk. By using hydrodynamic and magnetohydrodynamic simulations, we demonstrate that a wide range of stellar obliquities may be produced as a by-product of forming a star within a turbulent environment. We present a simple semi-analytic model that reveals this connection between the turbulent motions and the orientation of a star and its disk. Our results are consistent with the observed obliquity distribution of hot Jupiters. Migration of misaligned hot Jupiters may, therefore, be due to tidal dissipation in the disk, rather than tidal dissipation of the star-planet interaction.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1241942
Report Number(s):
LLNL-JRNL-670380
Journal Information:
Monthly Notices of the Royal Astronomical Society, Vol. 450, Issue 3; ISSN 0035-8711
Publisher:
Royal Astronomical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 67 works
Citation information provided by
Web of Science

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Cited By (21)

A hot Jupiter for Breakfast? Early Stellar Ingestion of Planets may be Common journal August 2015
Formation and stellar spin-orbit misalignment of hot Jupiters from Lidov–Kozai oscillations in stellar binaries journal January 2016
Effect of angular momentum alignment and strong magnetic fields on the formation of protostellar discs journal September 2017
On the diversity and statistical properties of protostellar discs journal January 2018
Teetering stars: resonant excitation of stellar obliquities by hot and warm Jupiters with external companions journal July 2018
Star–disc (mis-)alignment in Rho Oph and Upper Sco: insights from spatially resolved disc systems with K2 rotation periods journal January 2019
The Role of Magnetic Fields in the Formation of Protostellar Discs journal December 2018
The Occurrence of Additional Giant Planets Inside the Water–Ice line in Systems with hot Jupiters: Evidence Against High-Eccentricity Migration journal June 2016
Stellar Spin–Orbit Alignment for Kepler-9, a Multi-transiting Planetary System with Two Outer Planets Near 2:1 Resonance journal January 2018
Stellar Obliquities and Planetary Alignments (SOPA). I. Spin–Orbit Measurements of Three Transiting Hot Jupiters: WASP-72b, WASP-100b, and WASP-109b journal October 2018
Synthetic Observations of Magnetic Fields in Protostellar Cores journal January 2017
Orbit Alignment in Triple Stars journal July 2017
Widespread Molecular Outflows in the Infrared Dark Cloud G28.37+0.07: Indications of Orthogonal Outflow-filament Alignment journal March 2019
Gravity-darkening Analysis of the Misaligned Hot Jupiter MASCARA-4 b journal January 2020
The Turbulent Origin of Outflow and spin Misalignment in Multiple star Systems journal August 2016
The exoplanet handbook: Book Review journal March 2012
The Turbulent Origin of Outflow and Spin Misalignment in Multiple Star Systems text January 2016
Effect of Angular Momentum Alignment and Strong Magnetic Fields on the Formation of Protostellar Disks text January 2017
The role of magnetic fields in the formation of protostellar discs text January 2018
Star-disc (mis-)alignment in Rho Oph and Upper Sco: insights from spatially resolved disc systems with K2 rotation periods text January 2019
Widespread Molecular Outflows in the Infrared Dark Cloud G28.37+0.07: Indications of Orthogonal Outflow-Filament Alignment text January 2019