Effect of AGN on the morphological properties of their host galaxies in the local Universe

Abstract

The morphological classification of active galaxies may be affected by the presence of active galactic nuclei (AGN). In this paper, we provide the most detailed analysis on how different AGN contributions, from 5% to 75%, to the total optical light may affect six commonly used morphological parameters and the final classification of AGN host galaxies at z$\sim$0. We used a local sample of >2000 visually classified non-active galaxies, to quantify how the contribution of a bright nuclear point source of different intensity could affect morphological parameters such as: asymmetry, Abraham concentration index, Gini, M20 moment of light, smoothness, and Concelice-Bershady concentration index. We found that most of the morphological parameters are affected by AGN contributions above 25%, with late-type galaxies being more affected than early-types. We found that Gini, Abraham concentration index and asymmetry are the most stable parameters even for AGN contributions above 25%, in comparison to Concelice-Bershady concentration index and M20 moment of light. Smoothness parameter shall be avoided when classifying AGN host galaxies, or at least it shall be used simultaneously in combination with several other parameters.

arXiv comment15 pages, 15 figures of MN-21-2415-MJ.R2

References in corpus (74)

• The Sloan Digital Sky Survey: Technical Summary
• The Host Galaxies of AGN
• The physical properties of star forming galaxies in the low redshift universe
• UV Star Formation Rates in the Local Universe
• Galaxy Zoo : Morphologies derived from visual inspection of galaxies from the Sloan Digital Sky Survey
• A New Non-Parametric Approach to Galaxy Morphological Classification
• Observational evidence for AGN feedback in early-type galaxies
• A Catalog of Bulge+Disk Decompositions and Updated Photometry for 1.12 Million Galaxies in the Sloan Digital Sky Survey
• The All-wavelength Extended Groth Strip International Survey (AEGIS) Data Sets
• A Direct Measurement of Major Galaxy Mergers at z < 3
• The Asymmetry of Galaxies: Physical Morphology for Nearby and High Redshift Galaxies
• Host galaxies, clustering, Eddington ratios, and evolution of radio, X-ray, and infrared-selected AGNs
• The Horizon-AGN simulation: morphological diversity of galaxies promoted by AGN feedback
• The Evolution of Galaxy Structure over Cosmic Time
• The Evolution of Galaxy Mergers and Morphology at z<1.2 in the Extended Groth Strip
• A Catalog of Detailed Visual Morphological Classifications for 14034 Galaxies in the Sloan Digital Sky Survey
• A New Approach to Galaxy Morphology: I. Analysis of the Sloan Digital Sky Survey Early Data Release
• Galaxy Merger Morphologies and Time-Scales from Simulations of Equal-Mass Gas-Rich Disc Mergers
• The bulk of the black hole growth since z~1 occurs in a secular universe: No major merger-AGN connection
• Improving galaxy morphologies for SDSS with Deep Learning
• Structural and Photometric Classification of Galaxies - I. Calibration Based on a Nearby Galaxy Sample
• A catalog of visual-like morphologies in the 5 CANDELS fields using deep-learning
• AEGIS: The color-magnitude relation for X-ray selected AGN
• AGN Host Galaxy Morphologies in COSMOS
• The effects of seeing on Sersic profiles. II. The Moffat PSF
• A definitive merger-AGN connection at z~0 with CFIS: mergers have an excess of AGN and AGN hosts are more frequently disturbed
• Color-Magnitude Relations of Active and Non-Active Galaxies in the Chandra Deep Fields: High-Redshift Constraints and Stellar-Mass Selection Effects
• Deep GALEX Imaging of the HST/COSMOS Field: A First Look at the Morphology of z~0.7 Star-forming Galaxies
• The Evolution of AGN Host Galaxies: From Blue to Red and the Influence of Large-Scale Structures
• The zCOSMOS Redshift Survey: the role of environment and stellar mass in shaping the rise of the morphology-density relation from z~1
• GALAPAGOS: From Pixels to Parameters
• The Biases of Optical Line-Ratio Selection for Active Galactic Nuclei, and the Intrinsic Relationship between Black Hole Accretion and Galaxy Star Formation
• Classifying Radio Galaxies with Convolutional Neural Network
• A robust morphological classification of high-redshift galaxies using support vector machines on seeing limited images. I Method description
• AEGIS: Host Galaxy Morphologies of X-ray and Infrared-selected AGN at 0.2 < z < 1.2
• Galaxy Zoo: Quantitative Visual Morphological Classifications for 48,000 galaxies from CANDELS
• The role of AGN in the colour transformation of galaxies at redshifts z~1
• Mergers Do Trigger AGNs out to z $\sim$ 0.6
• Galaxy Zoo: Morphological Classifications for 120,000 Galaxies in HST Legacy Imaging
• Quenching star formation: insights from the local main sequence
• Radio Galaxy Zoo: Compact and extended radio source classification with deep learning
• Dust-Corrected Colors Reveal Bimodality in AGN Host Galaxy Colors at z~1
• Is the Gini coefficient a stable measure of galaxy structure?
• Morphology parameters: substructure identification in X-ray galaxy clusters
• The Rise of Active Galactic Nuclei in the GAlaxy Evolution and Assembly semi-analytic model
• AGN-Host Galaxy Connection: Morphology and Colours of X-ray Selected AGN at z < 2
• AGN-Host Connection at 0.5 < z < 2.5: A rapid evolution of AGN fraction in red galaxies during the last 10 Gyr
• Star formation of far-IR AGN and non-AGN galaxies in the green valley: possible implication of AGN positive feedback
• Environmental dependence of AGN activity. I.: the effects of host galaxy
• The morphological evolution, AGN fractions, dust content, environments, and downsizing of massive green valley galaxies at 0.5<z<2.5 in 3D-HST/CANDELS
• Combining human and machine learning for morphological analysis of galaxy images
• Galaxy mergers up to z < 2.5 II: AGN incidence of merging galaxies at separations of 3-15 kpc
• The ALHAMBRA survey: reliable morphological catalogue of 22,051 early- and late-type galaxies
• The nuclear and extended infrared emission of the Seyfert galaxy NGC 2992 and the interacting system Arp 245
• Obscured GOODS AGN and Their Host Galaxies at z < 1.25: The Slow Black Hole Growth Phase
• A new tool for image analysis based on Chebyshev rational functions: CHEF functions
• Non-parametric Morphologies of Galaxies in the EAGLE Simulation
• A catalogue of structural and morphological measurements for DES Y1
• The Gini Coefficient as a Tool for Image Family Idenitification in Strong Lensing Systems with Multiple Images
• OTELO Survey: Deep BVRI broadband photometry of the Groth strip. II Properties of X-ray Emitters
• Galaxy classification: deep learning on the OTELO and COSMOS databases
• The impact from survey depth and resolution on the morphological classification of galaxies
• Nonparametric galaxy morphology from UV to submm wavelengths
• A simple model for the evolution of super-massive black holes and the quasar population
• Black Hole and Galaxy Coevolution in Moderately Luminous Active Galactic Nuclei at z~1.4 in SXDF
• Star formation in far-IR AGN and non-AGN galaxies in the green valley. II. Morphological analysis
• Double barred galaxies at intermediate redshifts: A feasibility study
• The Effects of an AGN on Host Galaxy Colour and Morphology Measurements
• The OTELO survey. III. Demography, morphology, IR luminosity and environment of AGN hosts
• The Gini Coefficient as a Morphological Measurement of Strongly Lensed Galaxies in the Image Plane
• A morphological study of galaxies in ZwCl0024+1652, a galaxy cluster at redshift z $\sim$ 0.4
• Optical variability modeling of newly identified blazar candidates behind Magellanic Clouds
• Direct effects of the environment on AGN triggering in SDSS spiral galaxies: merger-AGN connection
• Multi-wavelength landscape of the young galaxy cluster RXJ1257.2+4738 at z=0.866. II. Morphological properties