The Mysterious Case of Iron in XMPs: Anomalous High log(Fe/O) Observed in Extremely Metal-Poor Galaxies HSCJ1631+4426 and SDSSJ0811+4730

arXiv:2607.14758 · astro-ph.GA · Submitted 2026-07-16 · Read on arXiv

Aaron Myszka, Themiya Nanayakkara, Karl Glazebrook, Sarah M. Sweet, Brent Groves, Nikole M. Nielsen, Jarle Brinchmann, Yuki Isobe, Chiaki Kobayashi, Haruka Kusakabe, Michael V. Maseda

astro-ph.GA

Submitted: 2026-07-16

Code: https://github.com/Keck-DataReductionPipelines/KcwiDRPhttp:

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

Terminology

• Abundance — 39× in this paper · explained in 1 episode
• Metallicity — 20× in this paper · explained in 3 episodes
• Core — 4× in this paper · explained in 2 episodes
• Keck Cosmic Web Imager — 3× in this paper
• Calibration — 1× in this paper · explained in 7 episodes
• Dust Attenuation — 1× in this paper · explained in 2 episodes
• Stellar Feedback — 1× in this paper · explained in 2 episodes

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