From metallicity distributions to mutual information: A new perspective on stellar halo assembly

arXiv:2511.23452 · astro-ph.GA, astro-ph.CO · Submitted 2025-11-28 · Read on arXiv

astro-ph.GA, astro-ph.CO

Submitted: 2025-11-28

Updated: 2026-07-05

Terminology

• Metallicity — 191× in this paper · explained in 3 episodes
• Anisotropy — 71× in this paper · explained in 3 episodes
• Trace — 18× in this paper · explained in 2 episodes
• Information-Theoretic Framework — 6× in this paper · explained in 2 episodes
• Abundance — 4× in this paper · explained in 1 episode
• Clustering — 3× in this paper · explained in 2 episodes
• Alignment — 1× in this paper · explained in 1 episode
• Apache Point Observatory Galactic Evolution Experiment — 1× in this paper
• Calibration — 1× in this paper · explained in 7 episodes
• Population Synthesis — 1× in this paper · explained in 2 episodes
• Robustness — 1× in this paper · explained in 5 episodes

Sources

• Milky Way's Metal-Poor Stars display Chemical Transition near the Solar Radius
• Unusual integrated metallicity profile of our Milky Way
• On the stellar halo metallicity profile of Milky Way-like galaxies in the Auriga simulations
• The masses and metallicities of stellar haloes reflect galactic merger histories
• Unveiling the formation channels of stellar halos through their chemical fingerprints
• The Auriga Stellar Haloes: Connecting stellar population properties with accretion and merging history
• The ARTEMIS simulations: stellar haloes of Milky Way-mass galaxies
• The Auriga Project: the properties and formation mechanisms of disc galaxies across cosmic time
• The radial profile and flattening of the Milky Way's stellar halo to $\rm 80~$kpc from the SEGUE K-giant Survey
• The Metallicity Gradient and Complex Formation History of the Outermost Halo of the Milky Way
• Mapping the stellar structure of the Milky Way thick disk and halo using SEGUE photometry
• Deep SDSS optical spectroscopy of distant halo stars II. Iron, calcium, and magnesium abundances
• The GHOSTS survey. II. The diversity of Halo Color and Metallicity Profiles of Massive Disk Galaxies
• Galactic Archeology with the AEGIS Survey: The Evolution of Carbon and Iron in the Galactic Halo
• Resolving the Metallicity Distribution of the Stellar Halo with the H3 Survey
• The origin of galactic metal-rich stellar halo components with highly eccentric orbits
• Origin of chemically distinct discs in the Auriga cosmological simulations
• Progenitor diversity in the accreted stellar halos of Milky Way-like galaxies
• The stellar content of the Hamburg/ESO survey. V. The metallicity distribution function of the Galactic halo
• The Stellar Metallicity Distribution Function of the Galactic Halo from SDSS Photometry

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