Browsing University of Hertfordshire by Author "Kraljic, K."

Now showing items 1-5 of 5

    • Dark-matter-deficient dwarf galaxies form via tidal stripping of dark matter in interactions with massive companions 

      Jackson, R. A.; Kaviraj, S.; Martin, G.; Devriendt, J. E. G.; Slyz, A.; Silk, J.; Dubois, Y.; Yi, S. K.; Pichon, C.; Volonteri, M.; Choi, H.; Kimm, T.; Kraljic, K.; Peirani, S. (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 formation of cores in galaxies across cosmic time - the existence of cores is not in tension with the ΛCDM paradigm 

      Jackson, R. A.; Kaviraj, S.; Yi, S. K.; Peirani, S.; Dubois, Y.; Martin, G.; Devriendt, J. E. G.; Slyz, A.; Pichon, C.; Volonteri, M.; Kimm, T.; Kraljic, K. (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 ...

    • The origin of low-surface-brightness galaxies in the dwarf regime 

      Jackson, R. A.; Martin, G.; Kaviraj, S.; Ramsøy, M.; Devriendt, J. E. G.; Sedgwick, T.; Laigle, C.; Choi, H.; Beckmann, R. S.; Volonteri, M.; Dubois, Y.; Pichon, C.; Yi, S. K.; Slyz, A.; Kraljic, K.; Kimm, T.; Peirani, S.; Baldry, I. (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). ...

    • Radio AGN in nearby dwarf galaxies: the important role of AGN in dwarf-galaxy evolution 

      Davis, F.; Kaviraj, S.; Hardcastle, M. J.; Martin, G.; Jackson, R. A.; Kraljic, K.; Malek, K.; Peirani, S.; Smith, D. J. B.; Volonteri, M.; Wang, L. (2022-02-04)
      We combine deep optical and radio data, from the Hyper Suprime-Cam and the Low-Frequency Array (LOFAR) respectively, to study 78 radio AGN in nearby (z < 0.5) dwarf galaxies. Comparison to a control sample, matched in ...

    • The role of mergers and interactions in driving the evolution of dwarf galaxies over cosmic time 

      Martin, G.; Jackson, R. A.; Kaviraj, S.; Choi, H.; Devriendt, J. E. G.; Dubois, Y.; Kimm, T.; Kraljic, K.; Peirani, S.; Pichon, C.; Volonteri, M.; Yi, S. K. (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 ...