Chemical paradox in a binary system: Exploring metal enrichment in HD 81809B

arXiv:2605.31060 · astro-ph.SR, astro-ph.EP · Submitted 2026-05-29 · Read on arXiv

Nuno Moedas, Maria Pia Di Mauro

astro-ph.SR, astro-ph.EP

Submitted: 2026-05-29

Comments: 11 pages, 9 figures, 6 tables, accepted in A&A

Code: https://github.com/nmoedas/Accretion-Routine

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

Abundance — 38× in this paper · explained in 1 episode
Metallicity — 17× in this paper · explained in 3 episodes
Core — 7× in this paper · explained in 2 episodes
Main Sequence — 4× in this paper
alpha — 3× in this paper · explained in 1 episode
Homogenization — 2× in this paper · explained in 2 episodes
Using Modules for Experiments in Stellar Astrophysics — 2× in this paper
Alignment — 1× in this paper · explained in 1 episode
Consistency — 1× in this paper · explained in 3 episodes
Trace — 1× in this paper · explained in 2 episodes
Transiting Exoplanet Survey Satellite — 1× in this paper

Sources

On the contradictory case of the binary system HD 81809 hosting two pulsating solar-like stars observed by TESS

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