Correlation between Galaxy Mergers and Luminous AGN

Abstract

It is not yet clear what triggers the activity of active galactic nuclei (AGNs), but galaxy merging has been suspected to be one of the main mechanisms fuelling the activity. Using deep optical images taken at various ground-based telescopes, we investigate the fraction of galaxy mergers in 39 luminous AGNs (M${}_R\lesssim$ -22.6 mag) at $z\le$ 0.3 (a median redshift of 0.155), of which the host galaxies are generally considered as early-type galaxies. Through visual inspection of the images, we find that 17 of 39 AGN host galaxies (43.6%) show the evidence for current or past mergers like tidal tails, shells, and disturbed morphology. In order to see if this fraction is abnormally high, we also examined the merging fraction of normal early-type galaxies in the Sloan Digital Sky Survey (SDSS) Strip 82 data (a median redshift of 0.04), of which the surface-brightness limit is comparable to our imaging data. To correct for the effects related to the redshift difference of the two samples, we performed an image simulation by putting a bright point source as an artificial AGN in the images of SDSS early-type galaxies and placing them onto the redshifts of AGNs. The merging fraction in this realistic sample of simulated AGNs is only $\sim 5-15\%$ ($1/4$ to $1/8$ of that of real AGNs). Our result strongly suggests that luminous AGN activity is associated with galaxy merging.

57 pages, 19 figures, published in Astrophysical Journal

References in corpus (92)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Coevolution (Or Not) of Supermassive Black Holes and Host Galaxies
• The Host Galaxies of AGN
• Detailed Structural Decomposition of Galaxy Images
• CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey
• CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey - The Hubble Space Telescope Observations, Imaging Data Products and Mosaics
• Composite Quasar Spectra From the Sloan Digital Sky Survey
• Detailed Decomposition of Galaxy Images. II. Beyond Axisymmetric Models
• Central Masses and Broad-Line Region Sizes of Active Galactic Nuclei. II. A Homogeneous Analysis of a Large Reverberation-Mapping Database
• Gasdynamics and Starbursts in Major Mergers
• Determining Central Black Hole Masses in Distant Active Galaxies and Quasars. II. Improved Optical and UV Scaling Relationships
• Tracing Galaxy Formation with Stellar Halos I: Methods
• Supermassive Black Holes in Galactic Nuclei: Past, Present and Future Research
• Black holes in galaxy mergers: The formation of red elliptical galaxies
• Observational evidence for AGN feedback in early-type galaxies
• What determines the strength and the slowdown rate of bars ?
• Hubble Space Telescope Images of a Sample of Twenty Nearby Luminous Quasars
• Quasars, their host galaxies, and their central black holes
• The Evolution of Galaxy Mergers and Morphology at z<1.2 in the Extended Groth Strip
• On the Estimation of Confidence Intervals for Binomial Population Proportions in Astronomy: The Simplicity and Superiority of the Bayesian Approach
• Mergers and Bulge Formation in Lambda-CDM: Which Mergers Matter?
• Galaxy Merger Morphologies and Time-Scales from Simulations of Equal-Mass Gas-Rich Disc Mergers
• The Recent and Continuing Assembly of Field Ellipticals by Red Mergers
• CANDELS: Constraining the AGN-Merger Connection with Host Morphologies at z~2
• The bulk of the black hole growth since z~1 occurs in a secular universe: No major merger-AGN connection
• The cosmological size and velocity dispersion evolution of massive early-type galaxies
• Galaxy pairs in the Sloan Digital Sky Survey - IV: Interactions trigger AGN
• A Physical Model for the Origin of Quasar Lifetimes
• Major Galaxy Mergers Only Trigger the Most Luminous AGN
• Early-type galaxies in the SDSS. III. The Fundamental Plane
• Bar-driven Transport of Molecular Gas to Galactic Centers and Its Consequences
• Gas accretion on spiral galaxies: bar formation and renewal
• A comparative HST imaging study of the host galaxies of radio-quiet quasars, radio-loud quasars and radio galaxies: Paper I
• The Frequency of Tidal Features Associated with Nearby Luminous Elliptical Galaxies from a Statistically Complete Sample
• The Greater Impact of Mergers on the Growth of Massive Galaxies: Implications for Mass Assembly and Evolution Since z~1
• The Deep2 Galaxy Redshift Survey: Evolution of Close Galaxy Pairs and Major-Merger Rates Up to z ~ 1.2
• Evidence for Quasar Activity Triggered by Galaxy Mergers in HST Observations of Dust-reddened Quasars
• History of Galaxy Interactions and their Impact on Star Formation over the Last 7 Gyr from GEMS
• A Near-Infrared Spectral Template for Quasars
• Galaxy Zoo: The properties of merging galaxies in the nearby Universe - local environments, colours, masses, star-formation rates and AGN activity
• Cosmic Evolution of Black Holes and Spheroids. I: The M_BH-sigma Relation at z=0.36
• Colors of AGN host galaxies at 0.5<z<1.1 from GEMS
• HST WFC3/IR Observations of Active Galactic Nucleus Host Galaxies at z~2: Supermassive Black Holes Grow in Disk Galaxies
• Growth of Galactic Bulges by Mergers: I. Dense Satellites
• The impact of galaxy interactions on AGN activity in zCOSMOS
• Cosmic Evolution of Black Holes and Spheroids. III. The M-sigma relation in the last six billion years
• The Carnegie-Irvine Galaxy Survey. I. Overview and Atlas of Optical Images
• The Black Hole Mass Scale of Classical and Pseudo Bulges in Active Galaxies
• The DEEP Groth Strip Survey X: Number Density and Luminosity Function of Field E/S0 Galaxies at z < 1
• Evidence for Merger Remnants in Early-Type Host Galaxies of Low-Redshift QSOs
• A Multiwavelength Study of a Sample of 70 micron Selected Galaxies in the COSMOS Field II: The Role of Mergers in Galaxy Evolution
• A Characteristic Division Between the Fueling of Quasars and Seyferts: Five Simple Tests
• Chandra Discovery of a Binary Active Galactic Nucleus in Mrk 739
• The black hole mass of low redshift radiogalaxies
• Heavily Obscured Quasar Host Galaxies at z~2 are Disks, Not Major Mergers
• Are luminous radio-loud active galactic nuclei triggered by galaxy interactions?
• Bar effects on central star formation and AGN activity
• Galaxy Pairs in COSMOS -- Merger Rate Evolution Since z=1
• A Survey of Faint Galaxy Pairs
• An observer's view of simulated galaxies: disc-to-total ratios, bars, and (pseudo-)bulges
• Host galaxy morphologies of X-ray selected AGN: assessing the significance of different black hole fueling mechanisms to the accretion density of the Universe at z~1
• Diffuse Optical Light in Galaxy Clusters I: Abell 3888
• The merger-driven evolution of massive galaxies
• Growth of galactic bulges by mergers. II. Low-density satellites
• The Pair Fraction of Massive Galaxies at 0 < z < 3
• The Carnegie-Irvine Galaxy Survey. II. Isophotal Analysis
• The Origin of the Intrinsic Scatter in the Relation Between Black Hole Mass and Bulge Luminosity for Nearby Active Galaxies
• The Galaxy Major Merger Fraction to z ~ 1
• The importance of galaxy interactions in triggering type II quasar activity
• A Measurement of the Cosmological Constant Using Elliptical Galaxies as Strong Gravitational Lenses
• Do Bars Trigger Activity in Galactic Nuclei?
• Peculiar early-type galaxies in the SDSS Stripe82
• A Comparison of Galaxy Merger History Observations and Predictions from Semi-Analytic Models
• Decomposition of the Host Galaxies of Active Galactic Nuclei Using Hubble Space Telescope Images
• Tidal debris in elliptical galaxies as tracers of mergers with disks
• The Accuracy of Morphological Decomposition of Active Galactic Nucleus Host Galaxies
• Post-merger Signatures of Red-sequence Galaxies in Rich Abell Clusters at $z\lesssim 0.1$
• Early type galaxies with tidal debris and their scaling relations in the Spitzer Survey of Stellar Structure in Galaxies (S4G)
• Forming Young Bulges within Existing Disks: Statistical Evidence for External Drivers
• The Environmental Dependence of the Incidence of Galactic Tidal Features
• Mergers as triggers for nuclear activity: A near-IR study of the close environment of AGN in the VISTA-VIDEO survey
• Spheroidal post-mergers in the local Universe
• AGN environments at z<1.5 in the UKIDSS Ultra-Deep Survey
• Luminous X-ray AGN in Clusters of Galaxies
• Camera for QUasars in EArly uNiverse (CQUEAN)
• Pair Analysis of Field Galaxies from the Red-Sequence Cluster Survey
• Optical-Near Infrared Color Gradients And Merging History Of Elliptical Galaxies
• Study of a homogeneous QSO sample: relations between the QSO and its host galaxy
• Black Hole - Bulge Relationship of Post-Starburst Quasars at z \sim 0.3
• The Merger-Triggered Active Galactic Nuclei Contribution to the Ultraluminous Infrared Galaxy Population
• Auto-Guiding System for CQUEAN (Camera for QUasars in EArly uNiverse)
• The Infrared Medium-Deep Survey II: How to Trigger Radio-AGN? Hints from Their Environments

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• Interacting galaxies in the IllustrisTNG simulations -- IV: Enhanced Supermassive Black Hole Accretion Rates in Post-Merger Galaxies
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• Testing the Evolutionary Link between Type 1 and Type 2 Quasars with Measurements of the Interstellar Medium
• The Diverse Morphology, Stellar Population, and Black Hole Scaling Relations of the Host Galaxies of Nearby Quasars
• A significant excess in major merger rate for AGNs with the highest Eddington ratios at z<0.2
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• Effect of local and large-scale environments on nuclear activity and star formation
• Differences in Halo-Scale Environments between Type 1 and Type 2 AGNs at Low Redshift
• Spatially Offset Active Galactic Nuclei. II: Triggering in Galaxy Mergers
• A Multiwavelength Study of Active Galactic Nuclei in Post-Merger Remnants
• A Hubble Space Telescope Imaging Survey of Low-Redshift Swift-BAT Active Galaxies
• Frequency of Tidal Features Correlates with Age and Internal Structure of Early-type Galaxies
• The effect of environment on AGN activity: the properties of radio and optical AGN in void, isolated and group galaxies
• Hosts and triggers of AGNs in the Local Universe
• Evidence for Impact of Galaxy Mergers on Stellar Kinematics of Early-type Galaxies
• The AGN Luminosity Fraction in Merging Galaxies
• The mass and environmental dependence on the secular processes of AGN in terms of morphology, colour, and specific star-formation rate
• The JCMT SCUBA-2 Survey of the James Webb Space Telescope North Ecliptic Pole Time-Domain Field
• Star formation in far-IR AGN and non-AGN galaxies in the green valley. II. Morphological analysis
• Powerful Radio-Loud Quasars are Triggered by Galaxy Mergers in the Cosmic Bright Ages
• The Relation between Morphological Asymmetry and Nuclear Activity in Low-redshift Galaxies
• Massive Early-Type Galaxies in the HSC-SSP: Flux Fraction of Tidal Features and Merger Rates
• The Most Massive Active Galactic Nuclei at $1\lesssim z\lesssim 2$
• Dark-ages reionization and galaxy formation simulation -- XVIII. The high-redshift evolution of black holes and their host galaxies
• SDSS-IV MaNGA: The Incidence of Major Mergers in type I and II AGN Host Galaxies in the DR15 sample
• Panchromatic Photometry of Low-redshift, Massive Galaxies Selected from SDSS Stripe 82
• Host Galaxy Properties and Black Hole Mass of Swift J164449.3+573451 from Multi-Wavelength Long-Term Monitoring and HST Data
• Extremely Massive Quasars are not Good Proxies for Dense Environments Compared to Massive Galaxies: Environments of Extremely Massive Quasars and Galaxies
• Impact of Galaxy Mergers on Stellar Population Profiles of Early-type Galaxies
• Hydrodynamical Simulations of the Triggering of Nuclear Activities by Minor Mergers of Galaxies
• The Most Massive Early-type Galaxies Exhibit Tidal Features More Frequently in Lower-density Environments
• On the Effects of Local Environment on Active Galactic Nucleus (AGN) in the Horizon Run 5 Simulation
• Identification of Intermediate-mass Black Hole Candidates Among a Sample of Sd Galaxies
• Star formation and black hole accretion activity in rich local clusters of galaxies
• The Nature of LoBAL QSOs: II. HST/WFC3 Observations Reveal Host Galaxies Dominated by Mergers