Results 21 to 30 of about 796 (212)
Predicted Number, Multiplicity, and Orbital Dynamics of TESS M-dwarf Exoplanets [PDF]
The Astronomical Journal, 2019 Abstract We present a study of the M-dwarf exoplanetary systems forthcoming from NASA’s TESS mission. While the mission’s footprint is too complex to be characterized by a single detection completeness, we extract ensemble completeness functions that recover the planet detections from previous work for stars between 3200 and 4000 K.
Sarah Ballard
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Studying exoplanet orbits & dynamics with allesfitter
, 2022 <p>The orbits and dynamics of exoplanet systems can unveil their tales of formation, migration, star-planet interactions, and atmospheric properties. Kepler, TESS, and soon PLATO deliver an unprecedented wealth of new photometric data on this matter, while ground-based follow-up and radial velocity instruments add valuable insights. Here,
Maximilian N. Günther
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Dynamical Constraints on Exoplanets [PDF]
Proceedings of the International Astronomical Union, 2013 AbstractDynamical studies of new exoplanet systems are a critical component of the discovery and characterisation process. Such studies can provide firmer constraints on the parameters of the newly discovered planets, and may even reveal that the proposed planets do not stand up to dynamical scrutiny.
Horner, Jonti +4 more
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Impact of Lorentz Violation Models on Exoplanets’ Dynamics
Universe, 2022 Many exoplanets have been detected by the radial velocity method, according to which the motion of a binary system around its center of mass can produce a periodical variation of the Doppler effect of the light emitted by the host star. These variations are influenced by both Newtonian and non-Newtonian perturbations to the dominant inverse-square ...
Antonio Gallerati +2 more
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Regular and chaotic orbits in the dynamics of exoplanets [PDF]
The European Physical Journal Special Topics, 2016 Many of exoplanetary systems consist of more than one planet and the study of planetary orbits with respect to their long-term stability is very interesting. Furthermore, many exoplanets seem to be locked in a mean-motion resonance (MMR), which offers a phase protection mechanism, so that, even highly eccentric planets can avoid close encounters ...
Kyriaki I. Antoniadou
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Secular spin-axis dynamics of exoplanets [PDF]
Astronomy & Astrophysics, 2019 Context. Seasonal variations and climate stability of a planet are very sensitive to the planet obliquity and its evolution. This is of particular interest for the emergence and sustainability of land-based life, but orbital and rotational parameters of exoplanets are still poorly constrained.
Saillenfest, M., Laskar, J., Boué, G.
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Secular spin-axis dynamics of exoplanets (Corrigendum) [PDF]
Astronomy & Astrophysics, 2019 International ...
Saillenfest, M., Laskar, J., Boué, G.
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DYNAMICAL MEASUREMENTS OF THE INTERIOR STRUCTURE OF EXOPLANETS [PDF]
The Astrophysical Journal, 2013 Giant gaseous planets often reside on orbits in sufficient proximity to their host stars for the planetary quadrupole gravitational field to become non-negligible. In presence of an additional planetary companion, a precise characterization of the system's orbital state can yield meaningful constraints on the transiting planet's interior structure ...
Becker, Juliette C., Batygin, Konstantin
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Tidal synchronization of close-in satellites and exoplanets: II. Spin dynamics and extension to Mercury and exoplanet host stars [PDF]
Celestial Mechanics and Dynamical Astronomy, 2015 This paper deals with the application of the creep tide theory (Ferraz-Mello, CeMDA 116, 109, 2013) to the rotation of close-in satellites, Mercury, close-in exoplanets and their host stars. The solutions show two extreme cases: close-in giant gaseous planets, with fast relaxation (low viscosity) and satellites and Earth-like planets, with slow ...
Sylvio Ferraz-Mello
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Tidal Dissipation Regimes among the Short-period Exoplanets
The Astrophysical Journal Letters, 2023 The efficiency of tidal dissipation provides a zeroth-order link to a planet’s physical properties. For super-Earth and sub-Neptune planets in the range R _⊕ ≲ R _p ≲ 4 R _⊕ , particularly efficient dissipation (i.e., low tidal quality factors) may ...
Emma M. Louden +2 more
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