GravSphere2 extends Jeans modeling to fourth order with LOS and PM data plus flexible anisotropy forms to recover mass density, anisotropy, and density slope in spherical stellar systems while breaking the mass-anisotropy degeneracy.
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In TNG50, high-stellar-mass galaxies show shallow inner DM slopes regardless of central or satellite status, low-mass galaxies exhibit diverse profiles with satellites steeper especially if red and in massive hosts, and inner slopes steepen from z~1 to z=0 more strongly in the hydro run.
citing papers explorer
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GravSphere2: A higher-order Jeans method for mass-modeling spherical stellar systems
GravSphere2 extends Jeans modeling to fourth order with LOS and PM data plus flexible anisotropy forms to recover mass density, anisotropy, and density slope in spherical stellar systems while breaking the mass-anisotropy degeneracy.
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The Inner Dark-Matter Structure of Galaxies
In TNG50, high-stellar-mass galaxies show shallow inner DM slopes regardless of central or satellite status, low-mass galaxies exhibit diverse profiles with satellites steeper especially if red and in massive hosts, and inner slopes steepen from z~1 to z=0 more strongly in the hydro run.