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The formation of cores in galaxies across cosmic time - the existence of cores is not in tension with the ΛCDM paradigm
(2024-02-01)
The 'core-cusp' problem is considered a key challenge to the ΛCDM paradigm. Haloes in dark matter only simulations exhibit 'cuspy' profiles, where density continuously increases towards the centre. However, the dark matter ...
Preparing for low surface brightness science with the Vera C. Rubin Observatory: Characterisation of tidal features from mock images
(2022-06-01)
Tidal features in the outskirts of galaxies yield unique information about their past interactions and are a key prediction of the hierarchical structure formation paradigm. The Vera C. Rubin Observatory is poised to deliver ...
Massive spheroids can form in single minor mergers
(2019-11-01)
Understanding how rotationally supported discs transform into dispersion-dominated spheroids is central to our comprehension of galaxy evolution. Morphological transformation is largely merger-driven. While major mergers ...
The formation and evolution of low-surface-brightness galaxies
(2019-05-01)
Our statistical understanding of galaxy evolution is fundamentally driven by objects that lie above the surface-brightness limits of current wide-area surveys (μ ∼23 mag arcsec -2). While both theory and small, deep surveys ...