Analysis of the plane of satellites around Milky Way- mass galaxies in the IllustrisTNG simulation

arXiv:2510.02518 · astro-ph.GA, astro-ph.CO · Submitted 2025-10-02 · Read on arXiv

astro-ph.GA, astro-ph.CO

Submitted: 2025-10-02

Updated: 2026-08-12

Comments: 22 pages, 11 figures. The manuscript has been substantially revised

Journal ref: Mon Not R Astron Soc (2026)

DOI: 10.1093/mnras/stag1583

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

Terminology

• Milky Way — 54× in this paper
• Alignment — 27× in this paper · explained in 1 episode
• Plane of Satellites — 24× in this paper
• Trace — 5× in this paper · explained in 2 episodes
• Abundance — 2× in this paper · explained in 1 episode
• Anisotropy — 2× in this paper · explained in 3 episodes
• Large Magellanic Cloud — 2× in this paper
• Metallicity — 2× in this paper · explained in 3 episodes
• Clustering — 1× in this paper · explained in 2 episodes
• Small Magellanic Cloud — 1× in this paper

Sources

• Planes of Satellite Galaxies in the Magneticum Pathfinder Simulations
• Does the dwarf galaxy system of the Milky Way originate from Andromeda?
• Evidence of Early-stage Tidal Structures of Open Clusters Revealed by Kinematics with Gaia EDR3
• Zippers and Twisters: Planes of Satellite Galaxies Emerge from Whirling and Shocking Gas Streams in the Cosmic Web
• Decoding the Galactic Twirl: The Downfall of Milky Way-mass Galaxies Rotation Curves in the FIRE Simulations
• Planes of satellites, at once transient and persistent
• The Milky Way's plane of satellites: consistent with $\Lambda$CDM
• A rotating satellite plane around Milky Way-like galaxy from the TNG50 simulation

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