GALACTIC ANGULAR MOMENTUM IN THE ILLUSTRIS SIMULATION: FEEDBACK AND THE HUBBLE SEQUENCE

@article{Genel2015GALACTICAM,
  title={GALACTIC ANGULAR MOMENTUM IN THE ILLUSTRIS SIMULATION: FEEDBACK AND THE HUBBLE SEQUENCE},
  author={Shy Genel and S. Michael Fall and Lars E. Hernquist and Mark Vogelsberger and Gregory F. Snyder and Vicente Rodriguez-Gomez and Debora Sijacki and Volker Springel},
  journal={The Astrophysical Journal Letters},
  year={2015},
  volume={804}
}
We study the stellar angular momentum of thousands of galaxies in the Illustris cosmological simulation, which captures gravitational and gas dynamics within galaxies, as well as feedback from stars and black holes. We find that the angular momentum of the simulated galaxies matches observations well, and in particular two distinct relations are found for late-type versus early-type galaxies. The relation for late-type galaxies corresponds to the value expected from full conservation of the… 

Figures from this paper

The Impact of Galactic Winds on the Angular Momentum of Disk Galaxies in the Illustris Simulation
Observed galactic disks have specific angular momenta similar to expectations for typical dark matter halos in ΛCDM. Cosmological hydrodynamical simulations have recently reproduced this similarity
The inner structure of early-type galaxies in the Illustris simulation
Early-type galaxies provide unique tests for the predictions of the cold dark matter cosmology and the baryonic physics assumptions entering models for galaxy formation. In this work, we use the
Angular momentum evolution for galaxies in a Lambda-CDM scenario
Galaxy formation in the current cosmological paradigm is a very complex process in which inflows, outflows, interactions and mergers are common events. These processes can redistribute the angular
Structural and dynamical properties of galaxies in a hierarchical Universe: sizes and specific angular momenta
We study the size and the specific angular momentum of galaxies in a state-of-the-art semi-analytic model. Our model includes a specific treatment for the exchange of angular momentum between
The evolution of sizes and specific angular momenta in hierarchical models of galaxy formation and evolution
We extend our previous work focused at z ∼ 0, studying the redshift evolution of galaxy dynamical properties using the state-of-the-art semi-analytic model GAEA (GAlaxy Evolution and Assembly): we
Angular Momentum of Early and Late Type Galaxies: Nature or Nurture?
We investigate the origin, shape, scatter, and cosmic evolution of the observed relationship between specific angular momentum j⋆ and the stellar mass M⋆ in early-type galaxies (ETGs) and late-type
Angular momentum evolution of galaxies in EAGLE
We use the EAGLE cosmological hydrodynamic simulation suite to study the specific angular momentum of galaxies, j, with the aims of (i) investigating the physical causes behind the wide range of j
Galactic Angular Momentum in Cosmological Zoom-in Simulations. I. Disk and Bulge Components and the Galaxy–Halo Connection
We investigate the angular momentum evolution of four disk galaxies residing in Milky-Way–sized halos formed in cosmological zoom-in simulations with various sub-grid physics and merging histories.
THE IMPACT OF STELLAR FEEDBACK ON THE STRUCTURE, SIZE, AND MORPHOLOGY OF GALAXIES IN MILKY-WAY-SIZED DARK MATTER HALOS
We use cosmological zoom-in simulations of galaxy formation in a Milky-Way-sized halo started from identical initial conditions to investigate the evolution of galaxy sizes, baryon fractions,
CONNECTING ANGULAR MOMENTUM AND GALACTIC DYNAMICS: THE COMPLEX INTERPLAY BETWEEN SPIN, MASS, AND MORPHOLOGY
The evolution and distribution of the angular momentum of dark matter (DM) halos have been discussed in several studies over the past decades. In particular, the idea arose that angular momentum
...
...

References

SHOWING 1-10 OF 57 REFERENCES
Bulges versus discs: the evolution of angular momentum in cosmological simulations of galaxy formation
We investigate the evolution of angular momentum in simulations of galaxy formation in a cold dark matter universe. We analyse two model galaxies generated in the N-body/hydrodynamic simulations of
Hierarchical formation of bulgeless galaxies: why outflows have low angular momentum
Using high resolution, fully cosmological smoothed particle hydrodynamical simulations of dwarf galaxies in a Lambda cold dark matter Universe, we show how high redshift gas outflows can modify the
The formation of massive, compact galaxies at z = 2 in the Illustris simulation
Massive, quiescent galaxies at high redshift have been found to be considerably more compact than galaxies of similar mass in the local universe. How these compact galaxies formed has yet to be
A model for cosmological simulations of galaxy formation physics: multi-epoch validation
We present a multi-epoch analysis of the galaxy populations formed within the cosmological hydrodynamical simulations presented in Vogelsberger et al. (2013). These simulations explore the
Formation of Disk Galaxies: Feedback and the Angular Momentum Problem
When only cooling processes are included, smoothed-particle hydrodynamical (SPH) simulations of galaxy formation in a cold dark matter hierarchical clustering scenario consistently produce collapsed
ANGULAR MOMENTUM ACQUISITION IN GALAXY HALOS
We use high-resolution cosmological hydrodynamic simulations to study the angular momentum acquisition of gaseous halos around Milky-Way-sized galaxies. We find that cold mode accreted gas enters a
Introducing the Illustris Project: the evolution of galaxy populations across cosmic time
We present an overview of galaxy evolution across cosmic time in the Illustris Simulation. Illustris is an N-body/hydrodynamical simulation that evolves 2*1820^3 resolution elements in a (106.5Mpc)^3
The colours of satellite galaxies in the Illustris simulation
Observationally, the fraction of blue satellite galaxies decreases steeply with host halo mass, and their radial distribution around central galaxies is significantly shallower in massive (M* ≥ 1011
Feedback and the structure of simulated galaxies at redshift z=2
We study the properties of simulated high-redshift galaxies using cosmological N-body/gasdynamical runs from the OverWhelmingly Large Simulations (OWLS) project. The runs contrast several feedback
The impact of feedback on cosmological gas accretion
We investigate how the way galaxies acquire their gas across cosmic time in cosmological hydrodynamic simulations is modified by a comprehensive physical model for baryonic feedback processes. To do
...
...