545 citations · 1.7k across the 13 of their papers we have counts for
13 papers
Stellar and Dust Properties of Local Elliptical Galaxies: Clues to the Onset of Nuclear Activity
Yu Zhang, Qiusheng Gu, Luis C. Ho
We study the stellar and dust properties of a well-defined sample of local elliptical galaxies to investigate the relationship between host galaxy properties and nuclear activity.…
Hydrodynamical Simulations of the Lyman Alpha Forest: Model Comparisons
M. E. Machacek, G. L. Bryan, A. Meiksin +4
We investigate the properties of the Lyman alpha forest as predicted by numerical simulations for a range of currently viable cosmological models. This is done in order to understa…
Physical Properties of the Lyman Alpha Forest in a Cold Dark Matter Cosmology
Yu Zhang, Avery Meiksin, Peter Anninos +1
We discuss the origin and physical nature of the Lya forest absorption systems as found in hydrodynamical simulations of the Intergalactic Medium in a standard Cold Dark Matter cos…
First Structure Formation: I. Primordial Star Forming Regions in hierarchical models
Tom Abel, Peter Anninos, Michael L. Norman +1
We investigate the possibility of very early formation of primordial star clusters from high-σperturbations in cold dark matter dominated structure formation scenarios. For this we…
The Column Density Distribution of the Lyman-Alpha Forest: A Measure of Small Scale Power
Lam Hui, Nickolay Y. Gnedin, Yu Zhang
Absorption lines in the Lyman-alpha forest can be thought of as peaks in neutral hydrogen density along lines of sight. The column density distribution (the number density of absor…
Primordial Star Forming Regions in a CDM Universe
Yu Zhang, Michael L. Norman, Peter Anninos +1
We developed a three-dimensional 2-level hierarchical cosmological code with a realistic and robust treatment of multi-species non-equilibrium ionization and radiative cooling proc…