On the formation of subdwarf B stars via engulfment of substellar companions I. Conditions for and occurrence of envelope ejection events

arXiv:2608.22598 · astro-ph.SR · Submitted 2026-08-23 · Read on arXiv

astro-ph.SR

Submitted: 2026-08-23

Updated: 2026-09-25

Code: https://github.com/anthuil/Sekhmet

Terminology

• Core — 16× in this paper · explained in 2 episodes
• Metallicity — 5× in this paper · explained in 3 episodes
• Ablation — 3× in this paper · explained in 1 episode
• Angular Momentum Loss — 3× in this paper · explained in 1 episode
• Red Giant Branch — 2× in this paper
• Angular Momentum Transport — 1× in this paper · explained in 3 episodes
• Initial Mass Function — 1× in this paper
• Initial Mass Function (IMF) — 1× in this paper · explained in 2 episodes
• Trace — 1× in this paper · explained in 2 episodes

Sources

• Hot Subdwarf Stars
• Continuous mass ablation of planets engulfed in stellar envelopes
• A Smooth Transition from Giant Planets to Brown Dwarfs from the Radial Occurrence Distribution

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