422 citations · 2.1k across the 25 of their papers we have counts for
18 papers · 1 filter
Enabling Rapid Development of Parallel Tree Search Applications
Jeffrey P. Gardner, Andrew Connolly, Cameron McBride
Virtual observatories will give astronomers easy access to an unprecedented amount of data. Extracting scientific knowledge from these data will increasingly demand both efficient…
The Origin and Evolution of the Mass-Metallicity Relationship for Galaxies: Results from Cosmological N-Body Simulations
A. M. Brooks, F. Governato, C. M. Booth +5
We examine the origin and evolution of the mass-metallicity relationship (MZR, M-Z) for galaxies using high resolution cosmological SPH + N-Body simulations that include a physical…
The Effect of Large-Scale Structure on the SDSS Galaxy Three-Point Correlation Function
R. C. Nichol, R. K. Sheth, Y. Suto +21
We present measurements of the normalised redshift-space three-point correlation function (Q_z) of galaxies from the Sloan Digital Sky Survey (SDSS) main galaxy sample. We have app…
Measuring the Halo Mass of z=3 Damped Ly-alpha Absorbers from the Absorber-Galaxy Cross-correlation
Nicolas Bouche, Jeffrey P. Gardner, David H. Weinberg +3
[Abridged] We test the reliability of a method to measure the mean halo mass of Damped Ly-alpha absorbers (DLAs). The method is based on measuring the ratio of the cross-correlatio…
Dark Matter Subhaloes in Numerical Simulations
Darren Reed, Fabio Governato, Thomas Quinn +3
We use cosmological LCDM numerical simulations to model the evolution of the substructure population in sixteen dark matter haloes with resolutions of up to seven million particles…
Three-point Correlation Functions of SDSS Galaxies in Redshift Space: Morphology, Color, and Luminosity Dependence
Issha Kayo, Yasushi Suto, Robert C. Nichol +10
We present measurements of the redshift--space three-point correlation function of galaxies in the Sloan Digital Sky Survey (SDSS). For the first time, we analyze the dependence of…
Evolution of the Density Profiles of Dark Matter Haloes
Darren Reed, Fabio Governato, Licia Verde +5
We use numerical simulations in a Lambda CDM cosmology to model density profiles in a set of 16 dark matter haloes with resolutions of up to 7 million particles within the virial r…
Evolution of the Mass Function of Dark Matter Haloes
Darren Reed, Jeffrey Gardner, Thomas Quinn +4
We use a high resolution CDM numerical simulation to calculate the mass function of dark matter haloes down to the scale of dwarf galaxies, back to a redshift of fifteen, in a 5…
The Infuence of Omega_baryon on High-Redshift Structure
Jeffrey P. Gardner, Neal Katz, Lars Hernquist +1
We analyze high-redshift structure in three hydrodynamic simulations that have identical initial conditions and cosmological parameters and differ only in the value of the baryon d…
Cooling Radiation and the Lyman-alpha Luminosity of Forming Galaxies
Mark A. Fardal, Neal Katz, Jeffrey P. Gardner +3
We examine the cooling radiation from forming galaxies in hydrodynamic simulations of the LCDM model (cold dark matter with a cosmological constant), focusing on the Ly-alpha line…
Dependence of Halo Properties on Interaction History, Environment and Cosmology
Jeffrey P. Gardner
I present results from numerical N-body simulations regarding the effect of merging events on the angular momentum distribution of galactic halos as well as a comparison of halo gr…
Simulations of Damped Lyman-Alpha and Lyman Limit Absorbers in Different Cosmologies: Implications for Structure Formation at High Redshift
Jeffrey P. Gardner, Neal Katz, Lars Hernquist +1
We use hydrodynamic cosmological simulations to study damped Lyman-alpha (DLA) and Lyman limit (LL) absorption at redshifts z=2-4 in five variants of the cold dark matter scenario.…
The Nature of Lyman Break Galaxies in Cosmological Hydrodynamic Simulations
Romeel Davé, Jeffrey P. Gardner, Lars Hernquist +2
What type of objects are being detected as "Lyman break galaxies"? Are they predominantly the most massive galaxies at that epoch, or are many of them smaller galaxies un…
Theoretical Modeling of the High Redshift Galaxy Population
David H. Weinberg, Romeel Dave', Jeffrey P. Gardner +2
We review theoretical approaches to the study of galaxy formation, with emphasis on the role of hydrodynamic simulations in modeling the high redshift galaxy population. We present…
On the origin of early type galaxies and the evolution of the interaction rate in the field
F. Governato, Jeffrey P. Gardner, J. Stadel +2
Using cosmological N-body simulations of critical (SCDM) and open (Omega_0=0.3, OCDM) cold dark matter models we have identified dark matter halos which are associated with the pro…
Testing Cosmological Models Against the Abundance of Damped Lyman-Alpha Absorbers
Jeffrey P. Gardner, Neal Katz, David H. Weinberg +1
We calculate the number of damped Lyman-alpha absorbers expected in various popular cosmological models as a function of redshift and compare our predictions with observed abundanc…
Galaxy Formation at High Redshift
N. Metcalfe, T. Shanks, A. Campos +2
Sensitive optical surveys have revealed a large population of `faint blue galaxies' which are believed to be young galaxies, observed close to their time of formation. But there ha…
The Population of Damped Lyman-alpha and Lyman Limit Systems in the Cold Dark Matter Model
Jeffrey P. Gardner, Neal Katz, Lars Hernquist +1
Lyman limit and damped Lyman-alpha absorption systems probe the distribution of collapsed, cold gas at high redshift. Numerical simulations that incorporate gravity and gas dynamic…