Simulations of a tuned 1:1 head-on merger reproducing NGC 1052's E4 shape generate tidal dwarf galaxies with sizes matching the observed DM-free dwarfs.
Ultra-diffuse galaxies without dark matter
2 Pith papers cite this work. Polarity classification is still indexing.
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Pith papers citing it
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.
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astro-ph.GA 2years
2026 2verdicts
UNVERDICTED 2representative citing papers
ATTILA tool identifies 24 new ultra-diffuse galaxies in Hydra I, doubling the known population to 48, plus 92 additional low surface brightness galaxies, while recovering over 80% of previously known ones.
citing papers explorer
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Tidal origin of dark-matter free dwarf galaxies in the NGC 1052 group
Simulations of a tuned 1:1 head-on merger reproducing NGC 1052's E4 shape generate tidal dwarf galaxies with sizes matching the observed DM-free dwarfs.
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Advancing the detection of low surface brightness galaxies. I. ATTILA: multi-tAsking deTecTIon tool for Lsb gAlaxies
ATTILA tool identifies 24 new ultra-diffuse galaxies in Hydra I, doubling the known population to 48, plus 92 additional low surface brightness galaxies, while recovering over 80% of previously known ones.