On the Compositions of Interstellar Objects

arXiv:2609.30827 · astro-ph.EP, astro-ph.GA · Submitted 2026-09-25 · Read on arXiv

astro-ph.EP, astro-ph.GA

Submitted: 2026-09-25

Updated: 2026-09-25

Code: https://github.com/Otautahi-Oxford/OO-model

Terminology

• Abundance — 64× in this paper · explained in 1 episode
• Metallicity — 30× in this paper · explained in 3 episodes
• Core — 3× in this paper · explained in 2 episodes
• Phase Transitions — 1× in this paper · explained in 2 episodes
• alpha — 1× in this paper · explained in 1 episode

Sources

• The ejection velocities of interstellar objects signpost their progenitor system architectures
• High-resolution optical spectroscopy reveals the distinctive volatile composition of the interstellar comet 3I/ATLAS
• The Highly Unusual Behavior and Chemical Composition of Interstellar Comet 2I/Borisov
• A portrait throughout perihelion of the NH$_2$-rich interstellar comet 2I/Borisov
• Chemical Habitability: Supply and Retention of Life's Essential Elements During Planet Formation

Related papers

• PDS 70 c and SR 12 c: Observational Constraints on Giant-Planet and Satellite Formation
• Two-stage disruption of resonant chains
• Detectability of resolved hydrogen lines from the accretion shock at gas giants and their CPDs
• Binary-lens Microlensing Degeneracy: Impact on Planetary Sensitivity and Mass-ratio Function
• Atmospheric escape fractionates secondary but not primary atmospheres
• The Occurrence Rate of Nearby Planetary Companions to Hot Jupiters