On the Orbits of Infalling Satellite Halos

Abstract

The orbital properties of infalling satellite halos set the initial conditions which control the subsequent evolution of subhalos and the galaxies that they host, with implications for mass stripping, star formation quenching, and merging. Using a high-resolution, cosmological N-body simulation, I examine the orbital parameters of satellite halos as they merge with larger host halos, focusing primarily on orbital circularity and pericenter. I explore in detail how these orbital parameters depend on mass and redshift. Satellite orbits become more radial and plunge deeper into their host halo at higher host halo mass, but they do not significantly depend on satellite halo mass. Additionally, satellite orbits become more radial and plunge deeper into their host halos at higher redshift. I also examine satellite velocities, finding that most satellites infall with less specific angular momentum than the host halo virial value, but that satellites are `hotter' than the host virial velocity. I discuss the implications of these results to the processes of galaxy formation and evolution, and I provide fitting formulas to the mass and redshift dependence of satellite orbital circularity and pericenter.

11 pages, 12 figures, accepted for publication in MNRAS

References in corpus (22)

• Baryon Acoustic Oscillations in the Sloan Digital Sky Survey Data Release 7 Galaxy Sample
• Cold streams in early massive hot haloes as the main mode of galaxy formation
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Likelihoods and Parameters from the WMAP data
• Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
• A primer on hierarchical galaxy formation: the semi-analytical approach
• Ram pressure stripping the hot gaseous halos of galaxies in groups and clusters
• Kinematic Structure of Merger Remnants
• A fitting formula for the merger timescale of galaxies in hierarchical clustering
• Substructure depletion in the Milky Way halo by the disk
• The Unorthodox Orbits of Substructure Halos
• What determines satellite galaxy disruption?
• Dissipationless Mergers of Elliptical Galaxies and the Evolution of the Fundamental Plane
• Satellites of Simulated Galaxies: survival, merging, and their relation to the dark and stellar halos
• Resonant stripping as the origin of dwarf spheroidal galaxies
• The Radical Consequences of Realistic Satellite Orbits for the Heating and Implied Merger Histories of Galactic Disks
• The survival of dark matter halos in the cluster Cl0024+16
• Simulating Subhalos at High Redshift: Merger Rates, Counts, and Types
• The orbital velocity anisotropy of cluster galaxies: evolution
• The Clustering and Host Halos of Galaxy Mergers at High Redshift
• Close Pairs as Proxies for Galaxy Cluster Mergers
• The impact of environment on the dynamical structure of satellite systems
• The Orbital Distribution of Satellite Galaxies

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