Hierarchical formation of bulgeless galaxies: why outflows have low angular momentum

@article{Brook2010HierarchicalFO,
  title={Hierarchical formation of bulgeless galaxies: why outflows have low angular momentum},
  author={Chris B. Brook and Fabio Governato and Rok Ro{\vs}kar and Gregory S. Stinson and Alyson M. Brooks and James Wadsley and Thomas R. Quinn and Brad K. Gibson and Owain N. Snaith and Kate Pilkington and Elisa L. House and Andrew Pontzen},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2010},
  volume={415},
  pages={1051-1060}
}
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 baryon angular momentum distribution and allow pure disc galaxies to form. We outline how galactic outflows preferentially remove low angular momentum material due a combination of (a) star formation peaking at high redshift in shallow dark matter potentials, an epoch when accreted gas has relatively… 
Hierarchical formation of bulgeless galaxies – II. Redistribution of angular momentum via galactic fountains
Within a fully cosmological hydrodynamical simulation, we form a galaxy which rotates at 140 km s −1 , and it is characterized by two loose spiral arms and a bar, indicative of a Hubble-type SBc/d
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
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
ORBITING CIRCUMGALACTIC GAS AS A SIGNATURE OF COSMOLOGICAL ACCRETION
We use cosmological smoothed particle hydrodynamic simulations to study the kinematic signatures of cool gas accretion onto a pair of well-resolved galaxy halos. We find that cold-flow streams and
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 diverse formation histories of simulated disc galaxies
We analyze the formation histories of 19 galaxies from cosmological smoothed particle hydrodynamics zoom-in resimulations. We construct mock three-colour images and show that the models reproduce
Galactic Angular Momentum in the Illustris Simulation: Feedback and the Hubble Sequence
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
Gas accretion and galactic fountain flows in the Auriga cosmological simulations: angular momentum and metal redistribution
Using a set of 15 high-resolution magnetohydrodynamic cosmological simulations of Milky Way formation, we investigate the origin of the baryonic material found in stars at redshift zero. We find
BARYONS MATTER: WHY LUMINOUS SATELLITE GALAXIES HAVE REDUCED CENTRAL MASSES
Using high-resolution cosmological hydrodynamical simulations of Milky Way-massed disk galaxies, we demonstrate that supernovae feedback and tidal stripping lower the central masses of bright (−15 <
Cosmic Rays Can Drive Strong Outflows from Gas-rich High-redshift Disk Galaxies
We present simulations of the magnetized interstellar medium (ISM) in models of massive star-forming (40 M☉ yr−1) disk galaxies with high gas surface densities (Σgas ∼ 100 M☉ pc−2) similar to
...
...

References

SHOWING 1-10 OF 85 REFERENCES
Bulgeless dwarf galaxies and dark matter cores from supernova-driven outflows
TLDR
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.
Towards a resolution of the galactic spin crisis: mergers, feedback and spin segregation
We model in simple terms the angular momentum problems of galaxy formation in cold dark matter cosmologies, and identify the key elements of a scenario that may solve them. The buildup of angular
On the origin of exponential galaxy discs
One of the most important unresolved issues for galaxy formation theory is to understand the origin of exponential galaxy discs. We use a disc galaxy evolution model to investigate whether galaxies
The angular momentum content of dwarf galaxies: new challenges for the theory of galaxy formation
We compute the specific angular momentum distributions for a sample of low-mass disc galaxies observed by Swaters. We compare these distributions to those of dark matter haloes obtained by Bullock et
Forming disc galaxies in ΛCDM simulations
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
Galaxy formation: the role of tidal torques and dissipational infall
Galaxies are assumed to form by the gravitational collapse of density peaks in an Omega = 1 universe dominated by cold dark matter. Protogalaxies are torqued up by tidal interactions with the
The impact of feedback on disc galaxy scaling relations
We use a disc galaxy evolution model to investigate the impact of mass outflows (a.k.a. feedback) on disc galaxy scaling relations, mass fractions and spin parameters. Our model follows the
GAS-RICH MERGERS IN LCDM: DISK SURVIVABILITY AND THE BARYONIC ASSEMBLY OF GALAXIES
We use N-body simulations and observationally normalized relations between dark matter halo mass, stellar mass, and cold gas mass to derive robust expectations about the baryonic content of major
Anisotropic Galactic Outflows and Enrichment of the Intergalactic Medium. I. Monte Carlo Simulations
We have developed an analytical model to describe the evolution of anisotropic galactic outflows. With it we investigate the impact of varying opening angle on galaxy formation and the evolution of
The dark matter problem in disc galaxies
In the generic CDM cosmogony, dark-matter haloes emerge too lumpy and centrally concentrated to host observed galactic discs. Moreover, discs are predicted to be smaller than those observed. We argue
...
...