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Profiles of dark haloes: evolution, scatter and environment
- J. Bullock, T. Kolatt, A. Dekel
- Physics
- 16 August 1999
We study dark-matter halo density profiles in a high-resolution N-body simulation of aCDM cosmology. Our statistical sample contains �5000 haloes in the range 10 11 10 14 h −1 M⊙ and the resolution…
A Universal Angular Momentum Profile for Galactic Halos
- J. Bullock, A. Dekel, J. Primack
- Physics
- 1 November 2000
We study the angular momentum profiles of a statistical sample of halos drawn from a high-resolution N-body simulation of the ΛCDM cosmology. We find that the cumulative mass distribution of specific…
Concentrations of Dark Halos from Their Assembly Histories
- R. Wechsler, J. Bullock, J. Primack, A. Kravtsov, A. Dekel
- Physics
- 9 August 2001
We study the relation between the density profiles of dark matter halos and their mass assembly histories using a statistical sample of halos in a high-resolution N-body simulation of the ΛCDM…
Accurate masses for dispersion-supported galaxies
- J. Wolf, G. Martinez, Frank F. Avedo
- Physics
- 21 August 2009
We derive an accurate mass estimator for dispersion-supported stellar systems and demonstrate its validity by analysing resolved line-of-sight velocity data for globular clusters, dwarf galaxies and…
The Universal Stellar Mass-Stellar Metallicity Relation for Dwarf Galaxies
- E. Kirby, Judith G. Cohen, D. C. Centre
- Physics, Geology
- 2 October 2013
We present spectroscopic metallicities of individual stars in seven gas-rich dwarf irregular galaxies (dIrrs), and we show that dIrrs obey the same mass-metallicity relation as the dwarf spheroidal…
LSST: From Science Drivers to Reference Design and Anticipated Data Products
- vZeljko Ivezi'c, S. Kahn, for the Lsst Collaboration
- PhysicsThe Astrophysical Journal
- 15 May 2008
TLDR
Tracing Galaxy Formation with Stellar Halos. I. Methods
- J. Bullock, K. Johnston
- Physics
- 20 June 2005
If the favored hierarchical cosmological model is correct, then the Milky Way system should have accreted � 100– 200 luminous satellite galaxies in the past � 12 Gyr. We model this process using a…
The shape of dark matter haloes : dependence on mass, redshift, radius and formation
- B. Allgood, R. Flores, J. Bullock
- Physics
- 24 August 2005
Using six high-resolution dissipationless simulations with a varying box size in a flat Lambda cold dark matter (ACDM) universe, we study the mass and redshift dependence of dark matter halo shapes…
A common mass scale for satellite galaxies of the Milky Way
- L. Strigari, J. Bullock, M. Walker
- PhysicsNature
- 27 August 2008
TLDR
Multiphase galaxy formation: high-velocity clouds and the missing baryon problem
- A. Maller, J. Bullock
- Physics
- 28 June 2004
The standard treatment of cooling in Cold Dark Matter halos assumes that all of the gas within a “cooling radius” cools and contracts monolithically to fuel galaxy formation. Here we take into…
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