Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 450, Issue 3, Pages 3306-3318Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stv836
Keywords
accretion; accretion discs; planets and satellites: formation; protoplanetary discs; stars: formation; stars: rotation
Categories
Funding
- National Science Foundation [AST-1211729, DGE-1106400]
- NASA [ATP- NNX13AB84G]
- US Department of Energy at the Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
- National Center of Supercomputing Application under the Extreme Science and Engineering Discovery Environment (XSEDE) by National Science Foundation [TG-MCA00N020, OCI-1053575]
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1211729] Funding Source: National Science Foundation
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The turbulent environment from which stars form may lead to misalignment between the stellar spin and the remnant protoplanetary disc. 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 disc. 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 disc, rather than tidal dissipation of the star-planet interaction.
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