Migration of giant gaseous clumps and structure of the outer Solar system

Abstract

New data on the distribution of distant trans-Neptunian objects and on the properties of comets indicate the importance of dynamical processes in the outer part of the protoplanetary disk in the formation of the observed structure of the Solar system. In this paper, we examined the possible action of giant gaseous clumps, resulting from gravitational instability and fragmentation of circumstellar disks, on the orbital distribution of the population of small bodies in the outer Solar system. Basically, we studied those features of migration and gravitational interaction of giant clumps that were found previously by Vorobyov and Elbakyan (2018). Our modeling showed that the main features of the distribution of small bodies resulting from the gravitational influence of giant clumps are consistent with the observed orbital distribution of distant trans-Neptunian objects. The studied dynamical process associated with a single giant clump is very short-time event (no more than several tens of thousands of years). The main factor affecting the orbital distribution of small bodies is close encounters with giant clumps. A significant part of small bodies (comets) is very quickly transferred to distant orbits with large eccentricities, which allows them to avoid mutual collisions.

References in corpus (22)

• Can giant planets form by direct gravitational instability?
• Evidence for a Distant Giant Planet in the Solar System
• The properties of brown dwarfs and low-mass hydrogen-burning stars formed by disc fragmentation
• The Origin of Episodic Accretion Bursts in the Early Stages of Star Formation
• Formation of giant planets by fragmentation of protoplanetary disks
• Challenges in Forming Planets by Gravitational Instability: Disk Irradiation and Clump Migration, Accretion & Tidal Destructio
• Oort Cloud and Scattered Disc formation during a late dynamical instability in the Solar System
• Nonlinear Outcome of Gravitational Instability in Disks with Realistic Cooling
• Formation of planets by tidal downsizing of giant planet embryos
• Rapid inward migration of planets formed by gravitational instability
• The Planet Nine Hypothesis
• Formation of giant planets and brown dwarfs on wide orbits
• Formation of Giant Planets by Disk Instability on Wide Orbits Around Protostars with Varied Masses
• Formation of pebble-pile planetesimals
• Comets as collisional fragments of a primordial planetesimal disk
• Dynamical relaxation and the orbits of low-mass extrasolar planets
• Dawes Review. The tidal downsizing hypothesis of planet formation
• Comet 67P/Churyumov-Gerasimenko: Constraints on its origin from OSIRIS observations
• Dynamical Evolution Induced by Planet Nine
• Gravitational fragmentation and formation of giant protoplanets on tens-of-au orbits
• The migration of gas giant planets in gravitationally unstable discs
• Orbital clustering in the distant solar system

Cited by in corpus (1)

• Orbital features of distant trans-Neptunian objects induced by giant gaseous clumps