Locally Biased Galaxy Formation and Large‐Scale Structure

Locally Biased Galaxy Formation and Large Scale Structure

We examine the influence of the morphology-density relation and a wide range of simple models for biased galaxy formation on statistical measures of large scale structure. We contrast the behavior of local biasing models, in which the efficiency of galaxy formation is determined by the density, geometry, or velocity dispersion of the local mass distribution, with that of non-local biasing model...

Constraints on the Effects of Locally-biased Galaxy Formation

While it is well-known that “biased galaxy formation” can increase the strength of galaxy clustering, it is less clear whether straightforward biasing schemes can change the shape of the galaxy correlation function on large scales. Here we consider “local” biasing models, in which the galaxy density field δg at a point x is a function of the matter density field δ at that point: δg = f(δ). We c...

High redshift radio galaxies : Beacons to biased hierarchical galaxy formation within large scale structure

We summarize observations of the properties of powerful radio galaxies and their environments from z = 0 to 5. These data show that some high redshift radio galaxies inhabit regions of gas and galaxy overdensities indicative of proto-cluster environments.

Universe: Simulations of Structure and Galaxy Formation

Star formation and structure formation in galaxy interactions and mergers

A number of theoretical and simulation results on star and structure formation in galaxy interactions and mergers is reviewed, and recent hydrodynamic simulations are presented. The role of gravity torques and ISM turbulence in galaxy interactions, in addition to the tidal field, is highlighted. Interactions can drive gas inflows towards the central kpc and trigger a central starburst, the inte...