Fundamental differences between SPH and grid methods
We have carried out a comparison study of hydrodynamical codes by investigating their performance in modelling interacting multiphase fluids. The two commonly used techniques of grid and smoothed…
FORMING REALISTIC LATE-TYPE SPIRALS IN A ΛCDM UNIVERSE: THE ERIS SIMULATION
- J. Guedes, S. Callegari, P. Madau, L. Mayer
- Physics
- 30 March 2011
Simulations of the formation of late-type spiral galaxies in a cold dark matter (ΛCDM) universe have traditionally failed to yield realistic candidates. Here we report a new cosmological…
Bulgeless dwarf galaxies and dark matter cores from supernova-driven outflows
- F. Governato, C. Brook, P. Madau
- PhysicsNature
- 14 January 2010
Hydrodynamical simulations in a framework assuming the presence of CDM and a cosmological constant are reported in which the inhomogeneous interstellar medium is resolved and the analogues of dwarf galaxies—bulgeless and with shallow central dark-matter profiles—arise naturally in these simulations.
Clumps in the outer disk by disk instability: Why they are initially gas giants and the legacy of disruption
- A. Boley, T. Hayfield, L. Mayer, R. Durisen
- Physics, Geology
- 24 September 2009
Forming disc galaxies in ΛCDM simulations
- F. Governato, B. Willman, T. Quinn
- Physics
- 16 February 2006
We used fully cosmological, high-resolution N-body + smooth particle hydrodynamic (SPH) simulations to follow the formation of disc galaxies with rotational velocities between 135 and 270km s -1 in a…
On the life and death of satellite haloes
- G. Taffoni, L. Mayer, Monica Colpi Fabio Governato
- Physics
- 14 January 2003
We study the evolution of dark matter satellites orbiting inside more massive haloes using semi-analytical tools coupled with high-resolution N-body simulations. We select initial satellite sizes,…
The Metamorphosis of Tidally Stirred Dwarf Galaxies
- L. Mayer, F. Governato, G. Lake
- Physics, Geology
- 27 March 2001
We present results from high-resolution N-body/SPH (smoothed particle hydrodynamic) simulations of rotationally supported dwarf irregular galaxies moving on bound orbits in the massive dark matter…
The Secular Evolution of Disk Structural Parameters
- V. Debattista, L. Mayer, C. Carollo, B. Moore, J. Wadsley, T. Quinn
- Physics
- 12 September 2005
We present a comprehensive series of simulations to study the secular evolution of disk galaxies expected in a ΛCDM universe. Our simulations are organized in a hierarchy of increasing complexity,…
THE CIRCUMGALACTIC MEDIUM OF MASSIVE GALAXIES AT z ∼ 3: A TEST FOR STELLAR FEEDBACK, GALACTIC OUTFLOWS, AND COLD STREAMS
- S. Shen, P. Madau, J. Guedes, L. Mayer, J. Prochaska, J. Wadsley
- Physics
- 1 May 2012
We present new results on the kinematics, thermal and ionization state, and spatial distribution of metal-enriched gas in the circumgalactic medium (CGM) of massive galaxies at redshift ∼3, using the…
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