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The star formation histories of dwarf galaxies in Local Group cosmological simulations
Ruth Digby, Julio F. Navarro, Azadeh Fattahi +6
We use the APOSTLE and Auriga cosmological simulations to study the star formation histories (SFHs) of field and satellite dwarf galaxies. Despite sizeable galaxy-to-galaxy scatter…
Subhalo destruction in the Apostle and Auriga simulations
Jack Richings, Carlos Frenk, Adrian Jenkins +7
N-body simulations make unambiguous predictions for the abundance of substructures within dark matter halos. However, the inclusion of baryons in the simulations changes the pictur…
Early-type galaxy density profiles from IllustrisTNG: I. Galaxy correlations and the impact of baryons
Yunchong Wang, Mark Vogelsberger, Dandan Xu +10
We explore the isothermal total density profiles of early-type galaxies (ETGs) in the IllustrisTNG simulation. For the selected 559 ETGs at with stellar mass $10^{10.7}\mat…
The velocity anisotropy of the Milky Way satellite system
Alexander H. Riley, Azadeh Fattahi, Andrew B. Pace +9
We analyse the orbital kinematics of the Milky Way (MW) satellite system utilizing the latest systemic proper motions for 38 satellites based on data from Gaia Data Release 2. Comb…
No cores in dark matter-dominated dwarf galaxies with bursty star formation histories
Sownak Bose, Carlos S. Frenk, Adrian Jenkins +10
Measurements of the rotation curves of dwarf galaxies are often interpreted as requiring a constant density core at the centre, at odds with the "cuspy" inner profiles predicted by…
The mass of the Milky Way from satellite dynamics
Thomas Callingham, Marius Cautun, Alis J. Deason +6
We present and apply a method to infer the mass of the Milky Way (MW) by comparing the dynamics of MW satellites to those of model satellites in the EAGLE cosmological hydrodynamic…