Lower central dark matter densities in nearby galaxies than predicted by simulations

arXiv:2609.16740 · astro-ph.GA · Submitted 2026-09-15 · Read on arXiv

astro-ph.GA

Submitted: 2026-09-15

Updated: 2026-09-15

Comments: 47 pages, 5 main figures, 9 Extended Data figures, and 1 Extended Data table. Accepted in principle by Nature Astronomy. This is the authors' manuscript version

Code: https://github.com/dynamics-of-stellar-systems/dynamite

Project page: https://www.sdss4.org

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

Terminology

• AIDA-TNG — 26× in this paper · explained in 1 episode
• Core — 22× in this paper · explained in 2 episodes
• Population Synthesis — 12× in this paper · explained in 2 episodes
• Aperture — 8× in this paper · explained in 1 episode
• Benchmark — 6× in this paper · explained in 2 episodes
• Initial Mass Function — 6× in this paper
• Velocity Dispersion — 6× in this paper · explained in 2 episodes
• Sloan Digital Sky Survey — 5× in this paper
• Systematic Bias — 5× in this paper · explained in 3 episodes
• Calar Alto Legacy Integral Field Area — 4× in this paper
• Degeneracy — 4× in this paper · explained in 3 episodes
• AGN — 3× in this paper · explained in 1 episode
• Alignment — 3× in this paper · explained in 1 episode
• Initial Mass Function (IMF) — 3× in this paper · explained in 2 episodes
• AGN Feedback — 2× in this paper · explained in 1 episode
• Accuracy — 2× in this paper · explained in 1 episode
• Baryonic Feedback — 2× in this paper · explained in 3 episodes
• Robustness — 2× in this paper · explained in 5 episodes
• Adam — 1× in this paper · explained in 2 episodes
• Anisotropy — 1× in this paper · explained in 3 episodes
• Aperture Correction — 1× in this paper · explained in 1 episode
• Calibration — 1× in this paper · explained in 7 episodes
• Five-Hundred Aperture Spherical Radio Telescope — 1× in this paper
• Gravitational Lensing — 1× in this paper · explained in 2 episodes
• Metallicity — 1× in this paper · explained in 3 episodes
• SAGES Legacy Unifying Globulars and GalaxieS Survey — 1× in this paper
• Square Kilometre Array — 1× in this paper
• Stellar Feedback — 1× in this paper · explained in 2 episodes
• Trace — 1× in this paper · explained in 2 episodes
• Weak Lensing — 1× in this paper · explained in 2 episodes

Sources

• The Pan-STARRS1 Surveys

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