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- Title
AMD-stability and the classification of planetary systems.
- Authors
Laskar, J.; Petit, A. C.
- Abstract
We present here in full detail the evolution of the angular momentum deficit (AMD) during collisions as it was described in Laskar (2000, Phys. Rev. Lett., 84, 3240). Since then, the AMD has been revealed to be a key parameter for the understanding of the outcome of planetary formation models.We define here the AMD-stability criterion that can be easily verified on a newly discovered planetary system. We show how AMD-stability can be used to establish a classification of the multiplanet systems in order to exhibit the planetary systems that are long-term stable because they are AMD-stable, and those that are AMD-unstable which then require some additional dynamical studies to conclude on their stability. The AMD-stability classification is applied to the 131 multiplanet systems from The Extrasolar Planet Encyclopaedia database for which the orbital elements are sufficiently well known.
- Subjects
ANGULAR momentum (Nuclear physics); PLANETARY systems; ORIGIN of planets; EXTRASOLAR planetary orbits; CELESTIAL mechanics
- Publication
Astronomy & Astrophysics / Astronomie et Astrophysique, 2017, Vol 605, p1
- ISSN
0004-6361
- Publication type
Article
- DOI
10.1051/0004-6361/201630022