In TNG-50, 80% of Milky Way-mass galaxies align their present-day angular momentum with the orbital angular momentum of their most massive merger, and 81% of their stellar halos rotate prograde relative to the disk.
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IllustrisTNG simulations indicate galactic disk precession is common, driven by external tidal torques within 30 kpc, inducing warps and influencing evolution at all redshifts.
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Galaxy mergers and disk angular momentum evolution: stellar halos as a critical test
In TNG-50, 80% of Milky Way-mass galaxies align their present-day angular momentum with the orbital angular momentum of their most massive merger, and 81% of their stellar halos rotate prograde relative to the disk.
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A Universal Dance of Galactic Disks: Ubiquitous Precession and Its Implications
IllustrisTNG simulations indicate galactic disk precession is common, driven by external tidal torques within 30 kpc, inducing warps and influencing evolution at all redshifts.