Emission spectroscopy of KELT-2A b with Gemini-North/IGRINS-2: hints of a stellar C/O ratio and sub-stellar metallicity

arXiv:2610.19377 · astro-ph.EP · Submitted 2026-10-14 · Read on arXiv

astro-ph.EP

Submitted: 2026-10-14

Updated: 2026-10-14

Comments: 22 pages, 12 figures, accepted at AJ

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

Terminology

• Metallicity — 1× in this paper · explained in 3 episodes

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