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Theses

Origin and Formation of the Regular Satellites around Planets

Abstract : The presence of regular satellites around planets, thought to have formed in situ, is the rule rather than the exception in our Solar System. These objects presumably formed in the last stages of accretion of their parent planets and our understanding of their origin is therefore tied to that of the formation of planets. In spite of the recent progress achieved in many aspects of the theory of planetary formation, theories of satellites formation remained largely untouched. This thesis focuses on the investigation of the origin and condition of formation of satellites systems that will be the targets of future space exploration missions, such as the JAXA MMX mission, aiming at returning sample from the surface of one of the two martian moons, and the future ESA JUICE and NASA Europa Clipper missions that will both explore the Galilean moons orbiting around Jupiter. In a first part, the formation of the Galilean system is explored in the light of recent theories of planet formation with implications for our general understanding of moon formation around gas giant planets and the prospect of finding analogues to the Galilean moons outside of the Solar System. In a second part, we assess the ability of a giant impact scenario to reconcile the orbital and physical properties of the martian moons Phobos and Deimos.
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Submitted on : Wednesday, January 9, 2019 - 11:59:00 AM
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Thomas Ronnet. Origin and Formation of the Regular Satellites around Planets. Earth and Planetary Astrophysics [astro-ph.EP]. Aix-Marseille Université (AMU), 2018. English. ⟨tel-01975227⟩

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