32 papers · 1 filter
The Rest-Frame FUV Morphologies of Star-Forming Galaxies at z ~ 1.5 and z ~ 4
J. M. Lotz, P. Madau, M. Giavalisco +2
We apply a new approach to quantifying galaxy morphology and identifying galaxy mergers to the rest-frame far-ultraviolet images of 82 z ~ 4 Lyman break galaxies (LBGs) and 55 1.2…
Summary talk: How serious are the problems faced by CDM: cusps, thin disks, and halo substructure
Joel R. Primack
This is a summary of the discussion in Panel I of IAU Symposium 220 on Dark Matter in Galaxies. The panel topics and panellists were as follows -- Cusps Theory: Julio Navarro; Cusp…
The Origin and Distribution of Angular Momemtum in Galaxies
Joel R. Primack
Cold Dark Matter with a large cosmological constant (LambdaCDM) appears to fit large scale structure observations well. Of the possible small scale problems, the Central Cusps and…
Probing Galaxy Formation with High Energy Gamma-Rays
Joel R. Primack
I discuss how measurements of the absorption of -rays from GeV to TeV energies via pair production on the extragalactic background light (EBL) can probe important issues in gala…
The Masses of Lyman Break Galaxies
Joel R. Primack, Risa H. Wechsler, Rachel S. Somerville
Data on galaxies at high redshift, identified by the Lyman-break photometric technique, can teach us about how galaxies form and evolve. The stellar masses and other properties of…
Whatever Happened to Hot Dark Matter?
Joel R. Primack
This article summarizes the possible roles of neutrinos in cosmology, from the first three minutes onward. The fact that primordial neutrinos are about as numerous as the photons o…