Observational Evidence for the Coevolution of Galaxy Mergers, Quasars, and the Blue/Red Galaxy Transition

  title={Observational Evidence for the Coevolution of Galaxy Mergers, Quasars, and the Blue/Red Galaxy Transition},
  author={Philip F. Hopkins and Kevin Bundy and Lars Hernquist and Richard S. Ellis HarvardCfA and Caltech},
  journal={The Astrophysical Journal},
We compile a number of observations to estimate the time-averaged rate of formation or buildup of red sequence galaxies, as a function of mass and redshift. Comparing this with the mass functions of mergers and quasar hosts, and independently comparing their clustering properties as a function of redshift, we find that these populations trace the same mass distribution, with similar evolution, at redshifts 0 < z ≾ 1.5. Knowing one of the quasar, merger, or elliptical mass/luminosity functions… 

Figures from this paper

A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies. I. Galaxy Mergers and Quasar Activity
We develop a model for the cosmological role of mergers in the evolution of starbursts, quasars, and spheroidal galaxies. By combining theoretically well-constrained halo and subhalo mass functions
A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies: II. Formation of Red Ellipticals
We develop and test a model for the cosmological role of mergers in the formation and quenching of red, early-type galaxies. By combining theoretically well-constrained halo and subhalo mass
The Co-Formation of Spheroids and Quasars Traced in their Clustering
We compare observed clustering of quasars and galaxies as a function of redshift, mass, luminosity, and color/morphology, to constrain models of quasar fueling and the co-evolution of spheroids and
The nature of massive transition galaxies in CANDELS, GAMA and cosmological simulations
We explore observational and theoretical constraints on how galaxies might transition between the 'star-forming main sequence' (SFMS) and varying 'degrees of quiescence' out to z = 3. Our analysis is
Galaxy and Mass Assembly (GAMA): The Weak Environmental Dependence of Quasar Activity at 0.1 < z < 0.35
Understanding the connection between nuclear activity and galaxy environment remains critical in constraining models of galaxy evolution. By exploiting the extensive cataloged data from the Galaxy
Mergers and bulge formation in ΛCDM: Which mergers matter?
We use a suite of semi-empirical models to predict the galaxy-galaxy merger rate and relative contributions to bulge growth as a function of mass (both halo and stellar), redshift, and mass ratio.
A simple model to link the properties of quasars to the properties of dark matter haloes out to high redshift
We present a simple model of how quasars occupy dark matter haloes from z = 0 to 5 using the observed m BH -σ relation and quasar luminosity functions. This provides a way for observers to
Galaxy merger morphologies and time-scales from simulations of equal-mass gas-rich disc mergers
A key obstacle to understanding the galaxy merger rate and its role in galaxy evolution is the difficulty in constraining the merger properties and time-scales from instantaneous snapshots of the
We present first measurements of the evolution of the scatter of the cosmic average early-type galaxy color‐ magnitude relation (CMR) from z = 1 to the present day, finding that it is consistent with
Galaxy Downsizing Evidenced by Hybrid Evolutionary Tracks
The stellar-dark halo mass relation of galaxies at different redshifts, M s(M h, z), encloses relevant features concerning their physical processes and evolution. This sequence of relations, defined


Determining the Properties and Evolution of Red Galaxies from the Quasar Luminosity Function
We study the link between quasars and the red galaxy population using a model for self-regulated growth of supermassive black holes in gas-rich galaxy mergers. Using a model for quasar evolution
Merger-Driven Star Formation History of the Universe
Using a model for the self-regulated growth of supermassive BHs in mergers involving gas-rich galaxies, we study the relationship between quasars and the population of merging galaxies and predict
The clustering of galaxies around quasars
We study the cross-correlation between quasars and galaxies by embedding models for the formation and evolution of the two populations in cosmological N-body simulations. We adopt the quasar
A unified model for the evolution of galaxies and quasars
We incorporate a simple scheme for the growth of supermassive black holes into semi-analytic models that follow the formation and evolution of galaxies in a cold dark matter-dominated Universe. We
The merger rate of massive galaxies
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 the
The Luminosity Dependence of Quasar Clustering
We investigate the luminosity dependence of quasar clustering, inspired by numerical simulations of galaxy mergers that incorporate black hole growth. These simulations have motivated a new
The Redshift Distribution of Near-Infrared-selected Galaxies in the Great Observatories Origins Deep Survey as a Test of Galaxy Formation Scenarios*
The redshift distribution of near-IR-selected galaxies is often used to attempt to discriminate between the classical view of galaxy formation, in which present-day luminous galaxies were assembled
The Luminosity, Stellar Mass, and Number Density Evolution of Field Galaxies of Known Morphology from z = 0.5 to 3
The evolution of rest-frame B-band luminosities, stellar masses, and number densities of field galaxies in the Hubble Deep Fields North and South are studied as a function of rest-frame B-band
The evolution of the mass function split by morphology up to redshift 1 in the FORS deep and the GOODS-S fields
We study the evolution of the stellar mass density for the separate families of bulge-dominated and disk-dominated galaxies over the redshift range . We derive quantitative morphology for a
The nature of high-redshift galaxies
Abstract Using semi-analytic models of galaxy formation, we investigate the properties of z∼3 galaxies and compare them with the observed population of Lyman-break galaxies (LBGs). In addition to the