Beyond Five Scale Heights: Composition- and Cloud-dependent Ariel Tier-2 Requirements for sub-Neptunes

arXiv:2609.01577 · astro-ph.EP, astro-ph.IM · Submitted 2026-09-01 · Read on arXiv

astro-ph.EP, astro-ph.IM

Submitted: 2026-09-01

Updated: 2026-09-01

Terminology

• Metallicity — 18× in this paper · explained in 3 episodes
• Abundance — 7× in this paper · explained in 1 episode
• Ariel Mission Candidate Sample — 4× in this paper
• Calibration — 4× in this paper · explained in 7 episodes
• Robustness — 1× in this paper · explained in 5 episodes
• Trace — 1× in this paper · explained in 2 episodes
• Transmission Spectroscopy Metric — 1× in this paper
• Transmission spectroscopy — 1× in this paper · explained in 2 episodes

Sources

• On the Information Content of Ariel Transmission Spectra: Reassessing the Tier System

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