منابع مشابه
Migrating planets
A planet orbiting in a disk of planetesimals can experience an instability in which it migrates to smaller orbital radii. Resonant interactions between the planet and planetesimals remove angular momentum from the planetesimals, increasing their eccentricities. Subsequently, the planetesimals either collide with or are ejected by the planet, reducing the semimajor axis of the planet. If the sur...
متن کاملEccentricity Evolution of Resonant Migrating Planets
We examine the eccentricity evolution of a system of two planets locked in a mean motion resonance, in which the outer planet loses energy and angular momentum. The sink of energy and angular momentum could be either a gas or planetesimal disk. We show that the eccentricity of both planetary bodies can grow to large values, particularly if the inner body does not directly exchange energy or ang...
متن کاملResonant inclination excitation of migrating giant planets
The observed orbits of extrasolar planets suggest that many giant planets migrate a considerable distance towards their parent star as a result of interactions with the protoplanetary disk, and that some of these planets become trapped in eccentricity-exciting mean motion resonances with one another during this migration. Using three-dimensional numerical simulations, we find that as long as th...
متن کاملInfluence of an inner disc on the orbital evolution of massive planets migrating in resonance
Context. The formation of resonant pairs of planets in exoplanetary systems involves planetary migration in the protoplanetary disc. After a resonant capture, the subsequent migration in this configuration leads to a large increase of planetary eccentricities if no damping mechanism is applied. This has led to the conclusion that the migration of resonant planetary systems cannot occur over lar...
متن کاملA New Family of Planets? “ocean-planets”
A new family of planets is considered which is in between the rocky terrestrial planets and the gaseous giants, “Ocean-Planets”. We present the possible formation, composition and internal structure of these putative planets. We consider their oceans, as well as their possible exobiology interest. These exoplanets should be detectable by Space missions such as Eddington, Kepler, and possibly CO...
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ژورنال
عنوان ژورنال: Science
سال: 1998
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.279.5347.69