A5002312192- Galaxies: Formation, Evolution, Phenomena
- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Cosmology and Gravitation Theories
- Gamma-ray bursts and supernovae
- Adaptive optics and wavefront sensing
- Radio Astronomy Observations and Technology
- Astrophysics and Cosmic Phenomena
Durham University
2014-2018
Indiana Cancer Consortium
2016
University of Birmingham
1981
We introduce a suite of 30 cosmological magneto-hydrodynamical zoom simulations the formation galaxies in isolated Milky Way mass dark haloes. These were carried out with moving mesh code arepo, together comprehensive model for galaxy physics, including active galactic nuclei (AGN) feedback and magnetic fields, which produces realistic populations large simulations. demonstrate that our reproduce wide range present-day observables, particular, two-component disc-dominated appropriate stellar...
We present predictions for the quenching of star formation in satellite galaxies Local Group from a suite 30 cosmological zoom simulations Milky Way-like host galaxies. The Auriga resolve satellites down to luminosity classical dwarf spheroidal Way. find strong mass-dependent and distance-dependent signals, where systems beyond 600 kpc are only strongly quenched below stellar mass 107 M⊙. Ram pressure stripping appears be dominant mechanism 50 per cent cease within 1 Gyr first infall....
We present a new release of the GALFORM semi-analytical model galaxy formation and evolution, which exploits Millennium Simulation-class N-body run performed with WMAP7 cosmology. use this to study impact choice stellar population synthesis (SPS) on predicted evolution luminosity function. The is using seven different SPS models. In each case we obtain rest-frame function in far-ultra-violet, optical near-infrared (NIR) wavelength ranges. find that both ultra-violet are insensitive model....
Vertically extended, high velocity dispersion stellar distributions appear to be a ubiquitous feature of disc galaxies, and both internal external mechanisms have been proposed the major driver their formation. However, it is unclear what extent each mechanism can generate such distribution, which likely depend on assembly history galaxy. To this end, we perform 16 high-resolution cosmological-zoom simulations Milky Way-sized galaxies using state-of-the-art cosmological magnetohydrodynamical...
The magnetic fields observed in the Milky~Way and nearby galaxies appear to be equipartition with turbulent, thermal, cosmic ray energy densities, hence are expected dynamically important. However, origin of these strong is still unclear, most previous attempts simulate galaxy formation from cosmological initial conditions have ignored them altogether. Here, we analyse predicted by simulations Auriga Project, a set 30 high-resolution zoom Milky~Way-like galaxies, carried out moving-mesh...
Abstract We use a high-resolution cosmological zoom simulation of Milky Way-sized halo to study the observable features in velocity and metallicity space associated with dynamical influence spiral arms. For first time, we demonstrate that arms, form disc fully environment realistic galaxy formation physics, drive large-scale systematic streaming motions. In particular, on trailing edge arms peculiar galactocentric radial azimuthal field is directed radially outward azimuthally backward,...
The observed stellar kinematics of dispersion-supported galaxies are often used to measure dynamical masses. Recently, several analytical relationships between the line-of-sight velocity dispersion, projected (2D) or deprojected (3D) half-light radius and total mass enclosed within radius, relying on spherical Jeans equation, have been proposed. Here, we use APOSTLE cosmological hydrodynamical simulations Local Group test validity accuracy such estimators for both dispersion...
We present predictions for the two-point correlation function of galaxy clustering as a stellar mass, computed using two new versions GALFORM semi-analytic formation model. These models make use high resolution, large volume N-body simulation, set in WMAP7 cosmology. One model uses universal initial mass (IMF), while other assumes different IMFs quiescent star and bursts. Particular consideration is given to how assumptions required estimate masses observed galaxies (such choice IMF,...