TOI-5882, a lithium-enriched subgiant with a brown dwarf companion, shows enrichment consistent with engulfment of a super-Earth to Neptune-mass planet.
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2026 2representative citing papers
New spectroscopic measurements of RGB stars in nine open clusters confirm mass-dependent extra-mixing processes and indicate that initial 17O and 18O abundances may vary.
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Lithium Enrichment in a Subgiant Star with a Brown Dwarf Companion: A Planetary Engulfment Candidate
TOI-5882, a lithium-enriched subgiant with a brown dwarf companion, shows enrichment consistent with engulfment of a super-Earth to Neptune-mass planet.
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Spectroscopic analysis of RGB stars in nine open clusters
New spectroscopic measurements of RGB stars in nine open clusters confirm mass-dependent extra-mixing processes and indicate that initial 17O and 18O abundances may vary.