Ultra-diffuse galaxies without dark matter

Abstract

I develop a high velocity galaxy collision model to explain a rare but puzzling phenomenon, namely the apparent existence of ultra-diffuse galaxies with little dark matter. Predictions include simultaneous triggering of overpressured dense clouds to form luminous old globular clusters, a protogroup environment to generate high relative velocities of the initially gas-rich galaxies in the early universe, and spatially separated dark halos, possibly detectable via gravitational lensing and containing relic low metallicity stars with enhanced [alpha/Fe] at ultralow surface brightness.

MNRAS letters, 5 pages, accepted

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Cited by in corpus (46)

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• Dark Matter Deficient Galaxies Produced Via High-velocity Galaxy Collisions In High-resolution Numerical Simulations
• A Tip of the Red Giant Branch Distance to the Dark Matter Deficient Galaxy NGC1052-DF4 from Deep Hubble Space Telescope Data
• A spectroscopic study of MATLAS-2019 with MUSE: an ultra-diffuse galaxy with an excess of old globular clusters
• The Distribution of Ultra-Diffuse and Ultra-Compact Galaxies in the Frontier Fields
• Galaxy populations in the Hydra I cluster from the VEGAS survey II. The ultra-diffuse galaxy population
• Dark Matter Deficient Galaxies And Their Member Star Clusters Form Simultaneously During High-velocity Galaxy Collisions In 1.25 pc Resolution Simulations
• Creating a galaxy lacking dark matter in a dark matter dominated universe
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• The emergence of dark matter-deficient ultra-diffuse galaxies driven by scatter in the stellar mass-halo mass relation and feedback from globular clusters
• Monochromatic globular clusters as a critical test of formation models for the dark matter deficient galaxies NGC1052-DF2 and NGC1052-DF4
• Exploring the nature of dark matter with the extreme galaxy AGC 114905
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• Hydrodynamic simulations of an isolated star-forming gas cloud in the Virgo cluster
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• Multiple Beads-on-a-string: Dark Matter-Deficient Galaxy Formation in a Mini-bullet Satellite-satellite Galaxy Collision
• On the Evolution of the Globular Cluster System in NGC 1052-DF2: Dynamical Friction, Globular-Globular Interactions and Galactic Tides
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• Modified Gravity Theories in Light of the Anomalous Velocity Dispersion of NGC1052-DF2
• A new method to constrain the origins of dark matter-free galaxies and their unusual globular clusters
• An Unexplained Origin for the Unusual Globular Cluster System in the Ultra-diffuse Galaxy FCC 224
• Keck Spectroscopy of NGC 1052-DF9: Stellar Populations in the Context of the NGC 1052 Group
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• Understanding the Fundamental Plane and the Tully Fisher Relation
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• Revisiting the globular clusters of NGC1052-DF2
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• Impact of Dynamical Friction on the Tidal Formation of NGC 1052-DF2
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• On the Tidal Formation of Dark Matter Deficient Galaxies