A Direct Measurement of Major Galaxy Mergers at z 3

@article{Conselice2003ADM,
title={A Direct Measurement of Major Galaxy Mergers at z 3},
author={C. Conselice and M. Bershady and M. Dickinson and C. Papovich},
journal={The Astronomical Journal},
year={2003},
volume={126},
pages={1183-1207}
}
This paper presents direct evidence for hierarchical galaxy assembly out to redshifts z ~ 3. We identify major mergers using the model-independent CAS (concentration, asymmetry, clumpiness) physical morphological system on galaxies detected, and photometrically selected, in the WFPC2 and NICMOS Hubble Deep Field North. We specifically use the asymmetric distributions of rest-frame optical light measured through the asymmetry parameter (A) to determine the fraction of galaxies undergoing major… Expand
381 Citations
A Slow Merger History of Field Galaxies since z ~ 1*
Using deep infrared observations conducted with the CISCO imager on the Subaru Telescope, we investigate the field-corrected pair fraction and the implied merger rate of galaxies in redshift surveyExpand
Galaxy Mergers at z ≳ 1 in the HUDF: Evidence for a Peak in the Major Merger Rate of Massive Galaxies*
• Physics
• 2008
We present a measurement of the galaxy merger fraction and number density from observations in the Hubble Ultra Deep Field (HUDF) for -->0.5 ? z ? 2.5. We fit the combination of broadband data andExpand
Robust determination of the major merger fraction at z=0.6 in the groth strip
We measure the fraction of galaxies undergoing disk-disk major mergers (∫^mph_m) at intermediate redshifts ((0.35 ≤ z < 0.85) by studying the asymmetry index A of galaxy images. Results are providedExpand
Role of galaxy mergers in cosmic star formation history
• Physics
• 2009
We present a morphology study of intermediate-redshift (0.2 < z < 1.2) luminous infrared galaxies (LIRGs) and general field galaxies in the GOODS fields using a revised asymmetry measurement methodExpand
Evidence for a Major Merger Origin of High-Redshift Submillimeter Galaxies
• Physics
• 2003
Submillimeter-detected galaxies located at redshifts z > 1 host a major fraction of the bolometric luminosity at high redshifts due to thermal emission from heated dust grains, yet the nature ofExpand
The Major and Minor Galaxy Merger Rates at z < 1.5
Calculating the galaxy merger rate requires both a census of galaxies identified as merger candidates, and a cosmologically-averaged‘observability’ timescale hTobs(z)ifor identifying galaxy mergers.Expand
The merger rate of massive galaxies
• Physics
• 2006
We calculate the projected two-point correlation function for samples of luminous and massive galaxies in the COMBO-17 photometric redshift survey, focusing particularly on the amplitude of theExpand
CANDELS: constraining the AGN-merger connection with host morphologies at z ~ 2
Using Hubble Space Telescope/WFC3 imaging taken as part of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey, we examine the role that major galaxy mergers play in triggering activeExpand
Galaxy Mergers and Interactions at High Redshift
• C. Conselice
• Physics
• Proceedings of the International Astronomical Union
• 2006
Abstract In this review we discuss the evidence for galaxy interactions and mergers in the distant universe and the role of mergers in forming galaxies. Observations show that the fraction of massiveExpand
The optical morphologies of the 2 Jy sample of radio galaxies: evidence for galaxy interactions
• Physics
• 2010
We present deep Gemini Multi-Object Spectrograph South (GMOS-S)/Gemini optical broad-band images for a complete sample of 46 southern 2 Jy radio galaxies at intermediate redshifts (0.05 <z <0.7).Expand

References

SHOWING 1-10 OF 69 REFERENCES
Hubble space telescope imaging of star-forming galaxies at redshifts Z>3
• Physics
• 1996
We present HST images of star-forming galaxies at redshifts z>3. These galaxies have been color selected for having a Lyman discontinuity in the otherwise flat (in f_\nu units) UV spectra ofExpand
The Mass Assembly and Star Formation Characteristics of Field Galaxies of Known Morphology.
• Physics, Medicine
• The Astrophysical journal
• 2000
The star formation rate per unit stellar mass indicates that massive systems completed the bulk of their star formation before redshift 1, whereas dwarf galaxies continue to undergo major episodes of activity until the present epoch. Expand
The nature of high-redshift galaxies
• Physics
• 2001
Using semi-analytic models of galaxy formation set within the cold dark matter (CDM) merging hierarchy, we investigate several scenarios for the nature of the high-redshift ) Lyman-break galaxiesExpand
Clustering of galaxies in a hierarchical universe - I. Methods and results at z=0
• Physics
• 1999
We introduce a new technique for following the formation and evolution of galaxies in cosmological N-body simulations. Dissipationless simulations are used to track the formation and merging of darkExpand
The Evolution of the global stellar mass density at 0 < z < 3
• Physics
• 2003
The buildup of stellar mass in galaxies is the consequence of their past star formation and merging histories. Here we report measurements of rest-frame optical light and calculations of stellar massExpand
The Rest-Frame Optical Properties of z 3 Galaxies
• Physics
• 2001
We present the results of a near-infrared imaging survey of z ~ 3 Lyman break galaxies (LBGs). The survey covers a total of 30 arcmin2 and includes 118 photometrically selected LBGs with Ks-bandExpand
Caltech Faint Galaxy Redshift Survey. XI. The Merger Rate to Redshift 1 from Kinematic Pairs.
The rate of mass accumulation due to galaxy merging depends on the mass, density, and velocity distribution of galaxies in the near neighborhood of a host galaxy. The fractional luminosity inExpand
Galaxy Populations and Evolution in Clusters. II. Defining Cluster Populations
• Physics
• 2002
This paper presents quantitative techniques for studying, in an unbiased manner, the photometric and structural properties of galaxies in clusters, including a means to identify likely backgroundExpand
Hubble Space Telescope imaging of the CFRS and LDSS redshift surveys—IV. Influence of mergers in the evolution of faint field galaxies from z∼1
ABSTRA C T Hubble Space Telescope images of a sample of 285 galaxies with measured redshifts from the Canada‐France Redshift Survey (CFRS) and Autofib‐Low Dispersion Spectrograph Survey (LDSS)Expand
The Star formation history of field galaxies
• Physics
• 1998
We develop a method for interpreting faint galaxy data which focuses on the integrated light radiated from the galaxy population as a whole. The emission history of the universe at ultraviolet,Expand