Migration of Giant Gaseous Clumps and Structure of the Outer Solar System
| Autor: | V. V. Emel’yanenko |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Earth and Planetary Astrophysics (astro-ph.EP)
Physics Solar System education.field_of_study 010504 meteorology & atmospheric sciences Population Fragmentation (computing) FOS: Physical sciences Astronomy and Astrophysics Astrophysics Protoplanetary disk 01 natural sciences Gravitation Planetary science Space and Planetary Science 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Trans-Neptunian object education 010303 astronomy & astrophysics Event (particle physics) Astrophysics::Galaxy Astrophysics Astrophysics - Earth and Planetary Astrophysics 0105 earth and related environmental sciences |
| Zdroj: | Solar System Research. 54:64-69 |
| ISSN: | 1608-3423 0038-0946 |
| Popis: | 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 identified 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 the giant clump. A significant part of small bodies (comets) is very quickly transferred to distant orbits with large eccentricities, which allows them to avoid mutual collisions. |
| Databáze: | OpenAIRE |
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