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The study aims to explore the formation pathways of observed exocomets in the β Pictoris system using simulations.

March 5, 2026

Exocomets of β Pictoris. II. Two dynamical families of exocomets simulated with REBOUND

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The study aims to explore the formation pathways of observed exocomets in the β Pictoris system using simulations.
Simulated the system with over 100,000 mass-less test particles for 25 Myr using IAS15 in REBOUND.
Adopted initial conditions and a particle distribution similar to previous studies.
Examined interactions between test particles and gas giants to understand dynamical evolution.
Identified two dynamical families of exocomets: one from mean-motion resonance with the inner planet and another from outer system disruptions.
Predicted that particles from outside the orbit of b can enter star-grazing orbits.
Demonstrated that particles evolve chaotically after passing the water sublimation limit, leading to different volatile contents.

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Simulation investigation reveals dynamical evolution of exocomets, suggesting distinct formation pathways.

Jaworska et al. (2026) studied this question.

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