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Prospects for Determining the Equation of State of the Dark Energy: What can be Learned from Multiple Observables?
Jens Kujat, Angela M. Linn, Robert J. Scherrer +1
The dark energy that appears to produce the accelerating expansion of the universe can be characterized by an equation of state p=wρwith w<-1/3. A number of observational tests hav…
The Halo Occupation Distribution: Towards an Empirical Determination of the Relation Between Galaxies and Mass
Andreas A. Berlind, David H. Weinberg
We investigate galaxy bias in the framework of the ``Halo Occupation Distribution'' (HOD), which defines the bias of a population of galaxies by the conditional probability P(N|M)…
Spectroscopic Target Selection for the Sloan Digital Sky Survey: The Luminous Red Galaxy Sample
D. J. Eisenstein, J. Annis, J. E. Gunn +25
We describe the target selection and resulting properties of a spectroscopic sample of luminous, red galaxies (LRG) from the imaging data of the Sloan Digital Sky Survey (SDSS). Th…
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…
Sub-mm Galaxies in Cosmological Simulations
Mark A. Fardal, Neal Katz, David H. Weinberg +2
We study the predicted sub-mm emission from massive galaxies in a Lambda-CDM universe, using hydrodynamic cosmological simulations. Assuming that most of the emission from newly fo…
The growth of galaxies in cosmological simulations of structure formation
Chigurupati Murali, Neal Katz, Lars Hernquist +2
We use hydrodynamic simulations to examine how the baryonic components of galaxies are assembled, focusing on the relative importance of mergers and smooth accretion in the formati…