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Dark-matter-deficient dwarf galaxies form via tidal stripping of dark matter in interactions with massive companions
(2021-01-15)
In the standard Lambda-CDM paradigm, dwarf galaxies are expected to be dark-matter-rich, as baryonic feedback is thought to quickly drive gas out of their shallow potential wells and quench star formation at early epochs. ...
The origin of low-surface-brightness galaxies in the dwarf regime
(2021-01-13)
Low-surface-brightness galaxies (LSBGs) -- defined as systems that are fainter than the surface-brightness limits of past wide-area surveys -- form the overwhelming majority of galaxies in the dwarf regime (M* < 10^9 MSun). ...
The role of mergers and interactions in driving the evolution of dwarf galaxies over cosmic time
(2020-11-07)
Dwarf galaxies (M⋆ < 109 M☉) are key drivers of mass assembly in high-mass galaxies, but relatively little is understood about the assembly of dwarf galaxies themselves. Using the NEWHORIZON cosmological simulation (∼40 ...