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Table 6
Simulations of a hypothetical young Solar System with planets in various orbital configurations.
| Planets born in orbital resonance (see Sect. 4.2.2) | |
|---|---|
| Designation | Simulation D |
| Simulations | One simulation with planets (in various configurations), asteroids, and Galactic tidal field |
| Star | Single 1 M⊙ with four giant planets and 10 000 asteroids in the smooth potential of the Milky Way galaxy |
| Planets | The four planets have almost circular orbits (e < 0.006) in the plane (i < 0.1°) with Jupiter, Saturn, Neptune, and Uranus in orbits with semi-major axes of 5.1, 9.5, 19.2, and 30.1 au respectively. The ecliptic was inclined by 60° to the Galactic plane. We performed two more simulations with initial semi-major axes of 3.75, 5.953, 9, 449, and 15.0 au, and with semi-major axes of 5.5, 8.1, 11.5, and 14.2 au for the four giant planets |
| Asteroids | Ten-thousand asteroids in circular orbits between 3 au and 50 au in a thick disk (Toomre-Q parameter of 25 Toomre 1964) in the plane of the planets |
| Numerics | Huayno (Pelupessy et al. 2012) coupled to the Galactic model; see Table 5 via bridge (Portegies Zwart et al. 2020) in AMUSE (Portegies Zwart & McMillan 2018) |
| Computer | Run on LGM-II with GPU |
| Duration | Simulation performed for a duration of 1 Gyr |
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