Survey of the stability region of hypothetical habitable Trojan planets
TLDR
In this article, the authors studied the dynamical possibility that a terrestrial planet can exist in a 1:1 mean motion resonance with a Jovian-like planet, and they compiled a catalogue of hypothetical habitable Trojan planets, to make a stability forecast for further extrasolar planetary systems discovered in the future.Abstract:
Aims. In this work we study the dynamical possibility in extrasolar planetary systems that a terrestrial planet can exist in 1:1 mean motion resonance with a Jovian-like planet. We compiled a catalogue of hypothetical habitable Trojan planets, to be able to make a stability forecast for further extrasolar planetary systems discovered in the future. When speaking of habitability we also took the influence of the spectral type of the central star into account. Methods. We integrated some 10 6 orbits of fictitious Trojans around the Lagrangian points for up to 10 7 orbital periods of the primary bodies and checked the stability of the orbital elements and their chaoticity with the aid of the Lyapunov characteristic indicator and maximum eccentricity. The computations were carried out using the dynamical model of the elliptic, restricted three-body problem that consists of a central star, a gas giant moving in the habitable zone, and a hypothetical (massless) terrestrial planet. Results. Our investigations have shown that 7 exoplanetary systems can harbour habitable Trojan planets with stable orbits (HD 93083, HD 17051, HD 28185, HD 27442, HD 188015, HD 99109, and HD 221287, which is a recently discovered system). The comparison of the investigated systems with our catalogue showed matching results, so that we can use the catalogue in practice.read more
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The Exoplanet Handbook
TL;DR: In this paper, the authors present an overview of the solar system and its evolution, including the formation and evolution of stars, asteroids, and free-floating planets, as well as their internal and external structures.
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Empirical Constraints on Trojan Companions and Orbital Eccentricities in 25 Transiting Exoplanetary Systems
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TL;DR: In this paper, a search for Trojan companions to 25 transiting exoplanets was conducted using the technique of Ford & Gaudi, in which a difference is sought between the observed transit time and the transit time that is calculated by fitting a two-body Keplerian orbit to the radial-velocity data.
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Stability of Trojan planets in multi-planetary systems: Stability of Trojan planets in different dynamical systems
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Numerical integration of the restricted three-body problem with Lie series
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References
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Journal ArticleDOI
The HARPS search for southern extra-solar planets XI. Super-Earths (5 & 8 M_Earth) in a 3-planet system
Stéphane Udry,X. Bonfils,X. Delfosse,T. Forveille,M. Mayor,C. Perrier,François Bouchy,C. Lovis,Francesco Pepe,D. Queloz,Jean-Loup Bertaux +10 more
TL;DR: In this article, the authors reported the detection of two super-Earth planets in the Gl581 system, already known to harbour a hot Neptune, and confirmed the previously tentative statistical trend for many more very low-mass planets being found around M dwarfs than around solar-type stars.
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The HARPS search for southern extra-solar planets ? XI. Super-Earths (5&8M ) in a 3-planet system
Stéphane Udry,X. Bonfils,X. Delfosse,T. Forveille,Michel Mayor,C. Perrier,Francois Bouchy,C. Lovis,Francesco Pepe,D. Queloz +9 more
TL;DR: In this article, the authors reported the detection of two super-Earth planets in the Gl 581 system, which is known to harbor a hot Neptune and has a mass of 5.7 M and orbits at 0.25 AU from the star.
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