Publications (21)
Revisiting The First Galaxies: The effects of Population III stars on their host galaxies
Alexander L. Muratov, Oleg Y. Gnedin, Nickolay Y. Gnedin +1
We revisit the formation and evolution of the first galaxies using new hydrodynamic cosmological simulations with the ART code. Our simulations feature a recently developed model f…
The impact of baryon physics on the structure of high-redshift galaxies
Marcel Zemp, Oleg Y. Gnedin, Nickolay Y. Gnedin +1
We study the detailed structure of galaxies at redshifts z > 2 using cosmological simulations with improved modeling of the interstellar medium and star formation. The simulations…
Haloes gone MAD: The Halo-Finder Comparison Project
Alexander Knebe, Steffen R. Knollmann, Stuart I. Muldrew +34
[abridged] We present a detailed comparison of fundamental dark matter halo properties retrieved by a substantial number of different halo finders. These codes span a wide range of…
An optimum time-stepping scheme for N-body simulations
Marcel Zemp, Joachim Stadel, Ben Moore +1
We present a new time-stepping criterion for N-body simulations that is based on the true dynamical time of a particle. This allows us to follow the orbits of particles correctly i…
Quantifying the heart of darkness with GHALO - a multi-billion particle simulation of our galactic halo
Joachim Stadel, Doug Potter, Ben Moore +5
We perform a series of simulations of a Galactic mass dark matter halo at different resolutions, our largest uses over three billion particles and has a mass resolution of 1000 M_s…
The Role of Dwarf Galaxies in Building Large Stellar Halos
Evan N. Kirby, Puragra Guhathakurta, James S. Bullock +10
The hierarchical theory of galaxy formation rests on the idea that smaller galactic structures merge to form the galaxies that we see today. The past decade has provided remarkable…