Interplay of tidal evolution and stellar wind braking in the rotation of stars hosting massive close-in planets
This paper deals with the application of the creep tide theory (Ferraz-Mello) to the study of the rotation of stars hosting massive close-in planets. The stars have nearly the same tidal relaxation factors as gaseous planets and the evolution of their rotation is similar to that of close-in hot Jup...
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ri-123456789-290182022-10-20T20:40:57Z Interplay of tidal evolution and stellar wind braking in the rotation of stars hosting massive close-in planets Ferraz-Mello, S. Santos, M. Tadeu dos Folonier, H. Czismadia, Sz. Nascimento Júnior, José Dias do Pätzold, M. Celestial mechanics Planet Star interactions Planetary systems Planets and satellites: dynamical evolution and stability Stars: rotation This paper deals with the application of the creep tide theory (Ferraz-Mello) to the study of the rotation of stars hosting massive close-in planets. The stars have nearly the same tidal relaxation factors as gaseous planets and the evolution of their rotation is similar to that of close-in hot Jupiters: they tidally evolve toward a stationary solution. However, stellar rotation may also be affected by stellar wind braking. Thus, while the rotation of a quiet host star evolves toward a stationary attractor with a frequency (1 + 6e2) times the orbital mean motion of the companion, the continuous loss of angular momentum in an active star displaces the stationary solution toward slower values: active host stars with big close-in companions tend to have rotational periods longer than the orbital periods of their companions. The study of some hypothetical examples shows that, because of tidal evolution, the rules of gyrochronology cannot be used to estimate the age of one system with a large close-in companion, no matter if the star is quiet or active, if the current semimajor axis of the companion is smaller than 0.03–0.04 AU. Details on the evolution of the systems: CoRoT LRc06E21637, CoRoT-27, Kepler-75, CoRoT-2, CoRoT-18, CoRoT-14 and on hypothetical systems with planets of mass 1–4 MJup in orbit around a star similar to the Sun are given This paper deals with the application of the creep tide theory (Ferraz-Mello) to the study of the rotation of stars hosting massive close-in planets. The stars have nearly the same tidal relaxation factors as gaseous planets and the evolution of their rotation is similar to that of close-in hot Jupiters: they tidally evolve toward a stationary solution. However, stellar rotation may also be affected by stellar wind braking. Thus, while the rotation of a quiet host star evolves toward a stationary attractor with a frequency (1 + 6e2) times the orbital mean motion of the companion, the continuous loss of angular momentum in an active star displaces the stationary solution toward slower values: active host stars with big close-in companions tend to have rotational periods longer than the orbital periods of their companions. The study of some hypothetical examples shows that, because of tidal evolution, the rules of gyrochronology cannot be used to estimate the age of one system with a large close-in companion, no matter if the star is quiet or active, if the current semimajor axis of the companion is smaller than 0.03–0.04 AU. Details on the evolution of the systems: CoRoT LRc06E21637, CoRoT-27, Kepler-75, CoRoT-2, CoRoT-18, CoRoT-14 and on hypothetical systems with planets of mass 1–4 MJup in orbit around a star similar to the Sun are given 2020-05-19T19:31:58Z 2020-05-19T19:31:58Z 2015-07-01 article FERRAZ-MELLO, S.; SANTOS, M. Tadeu dos; FOLONIER, H.; CZISMADIA, Sz.; NASCIMENTO, J.-d. do; PÄTZOLD, M.. Interplay of tidal evolution and stellar wind braking in the rotation of stars hosting massive close-in planets. The Astrophysical Journal, [s.l.], v. 807, n. 1, p. 78, 2 jul. 2015. IOP Publishing. Disponível em: http://dx.doi.org/10.1088/0004-637x/807/1/78. Acesso em: 13 mai. 2020. 1678-765X https://repositorio.ufrn.br/jspui/handle/123456789/29018 en The American Astronomical Society |
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Celestial mechanics Planet Star interactions Planetary systems Planets and satellites: dynamical evolution and stability Stars: rotation |
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Celestial mechanics Planet Star interactions Planetary systems Planets and satellites: dynamical evolution and stability Stars: rotation Ferraz-Mello, S. Santos, M. Tadeu dos Folonier, H. Czismadia, Sz. Nascimento Júnior, José Dias do Pätzold, M. Interplay of tidal evolution and stellar wind braking in the rotation of stars hosting massive close-in planets |
| description |
This paper deals with the application of the creep tide theory (Ferraz-Mello) to the study of the rotation of stars
hosting massive close-in planets. The stars have nearly the same tidal relaxation factors as gaseous planets and the evolution of their rotation is similar to that of close-in hot Jupiters: they tidally evolve toward a stationary solution. However, stellar rotation may also be affected by stellar wind braking. Thus, while the rotation of a quiet host star evolves toward a stationary attractor with a frequency (1 + 6e2) times the orbital mean motion of the companion, the continuous loss of angular momentum in an active star displaces the stationary solution toward slower values: active host stars with big close-in companions tend to have rotational periods longer than the orbital periods of their companions. The study of some hypothetical examples shows that, because of tidal evolution, the rules of gyrochronology cannot be used to estimate the age of one system with a large close-in companion, no matter if the star is quiet or active, if the current semimajor axis of the companion is smaller than 0.03–0.04 AU. Details on the evolution of the systems: CoRoT LRc06E21637, CoRoT-27, Kepler-75, CoRoT-2, CoRoT-18, CoRoT-14 and on hypothetical systems with planets of mass 1–4 MJup in orbit around a star similar to the Sun are given |
| format |
article |
| author |
Ferraz-Mello, S. Santos, M. Tadeu dos Folonier, H. Czismadia, Sz. Nascimento Júnior, José Dias do Pätzold, M. |
| author_facet |
Ferraz-Mello, S. Santos, M. Tadeu dos Folonier, H. Czismadia, Sz. Nascimento Júnior, José Dias do Pätzold, M. |
| author_sort |
Ferraz-Mello, S. |
| title |
Interplay of tidal evolution and stellar wind braking in the rotation of stars hosting massive close-in planets |
| title_short |
Interplay of tidal evolution and stellar wind braking in the rotation of stars hosting massive close-in planets |
| title_full |
Interplay of tidal evolution and stellar wind braking in the rotation of stars hosting massive close-in planets |
| title_fullStr |
Interplay of tidal evolution and stellar wind braking in the rotation of stars hosting massive close-in planets |
| title_full_unstemmed |
Interplay of tidal evolution and stellar wind braking in the rotation of stars hosting massive close-in planets |
| title_sort |
interplay of tidal evolution and stellar wind braking in the rotation of stars hosting massive close-in planets |
| publisher |
The American Astronomical Society |
| publishDate |
2020 |
| url |
https://repositorio.ufrn.br/jspui/handle/123456789/29018 |
| work_keys_str_mv |
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