The Landscape of Galaxies Harboring Changing-Look Active Galactic Nuclei in the Local Universe

Abstract

We study the properties of the host galaxies of Changing-Look Active Galactic Nuclei (CL AGNs) with the aim of understanding the conditions responsible for triggering CL activity. We find that CL AGN hosts primarily reside in the so-called green valley that is located between spiral-like star-forming galaxies and dead ellipticals, implying that CL AGNs are activated during distinct periods of quenching and galaxy transformation processes. CL AGN hosts have low galaxy asymmetry indicators, suggesting that secular evolutionary processes (the influence of bars and spirals, and possibly minor mergers) might be the primary mechanism for transporting gas to the vicinity of the supermassive black hole (SMBH) rather than major mergers. Similar to tidal disruption events (TDEs) and highly variable AGNs, we find that CL AGN hosts are associated with SMBHs residing in high density pseudo-bulges and appear to overlap most significantly with the population of low-ionization nuclear emission-line region (LINER) galaxies. As such, CL AGN are likely fueled by strong episodic bursts of accretion activity, which appear to take place preferentially as the amount of material accessible for star formation and accretion dwindles. We also identify that CL AGN hosts are characterized by either large Sérsic indices or high bulge fractions, which suggests a simple metric for identifying candidates for spectroscopic follow-up observations in forthcoming synoptic surveys.

arXiv comment17 pages, 9 figures. Accepted to ApJ Letters. Revised version includes an expanded discussion on asymmetry measurements and galaxy disturbances

References in corpus (72)

• The Sloan Digital Sky Survey: Technical Summary
• Coevolution (Or Not) of Supermassive Black Holes and Host Galaxies
• The Host Galaxies of AGN
• The physical properties of star forming galaxies in the low redshift universe
• The 2.5 m Telescope of the Sloan Digital Sky Survey
• The Host Galaxies and Classification of Active Galactic Nuclei
• Mass and environment as drivers of galaxy evolution in SDSS and zCOSMOS and the origin of the Schechter function
• Star Formation in AEGIS Field Galaxies since z=1.1 : The Dominance of Gradually Declining Star Formation, and the Main Sequence of Star-Forming Galaxies
• The Man Behind the Curtain: X-rays Drive the UV through NIR Variability in the 2013 AGN Outburst in NGC 2617
• Secular Evolution and the Formation of Pseudobulges in Disk Galaxies
• The Sloan Digital Sky Survey Photometric Camera
• The reversal of the star formation-density relation in the distant universe
• Multiwavelength study of massive galaxies at z~2. I. Star formation and galaxy growth
• The Co-Evolution of Galaxies and Supermassive Black Holes: Insights from Surveys of the Contemporary Universe
• Nuclear Activity in Nearby Galaxies
• The SINS survey: SINFONI Integral Field Spectroscopy of z ~ 2 Star-forming Galaxies
• Observational constraints on growth of massive black holes
• The lesser role of starbursts for star formation at z=2
• Present-Day Growth of Black Holes and Bulges: the SDSS Perspective
• Observational evidence for AGN feedback in early-type galaxies
• Galaxy Structure and Mode of Star Formation in the SFR-Mass Plane from z ~ 2.5 to z ~ 0.1
• A Catalog of Bulge+Disk Decompositions and Updated Photometry for 1.12 Million Galaxies in the Sloan Digital Sky Survey
• A Hubble Space Telescope Imaging Survey of Nearby Active Glactic Nuclei
• The Discovery of the First "Changing Look" Quasar: New Insights into the Physics & Phenomenology of AGN
• High-Redshift Quasars Found in Sloan Digital Sky Survey Commissioning Data IV: Luminosity Function from the Fall Equatorial Stripe Sampl
• Secular Evolution in Disk Galaxies
• The Environment of ``E+A'' Galaxies
• A Systematic Search for Changing-Look Quasars in SDSS
• Galaxy pairs in the Sloan Digital Sky Survey - VIII: The observational properties of post-merger galaxies
• The Effect of Mass Ratio on the Morphology and Time-scales of Disc Galaxy Mergers
• A catalog of bulge, disk, and total stellar mass estimates for the Sloan Digital Sky Survey
• Discovery of 21 New Changing-look AGNs in Northern Sky
• Tidal Disruption Events Prefer Unusual Host Galaxies
• Tidal disruption rate of stars by spinning supermassive black holes
• AGN Type-casting: Mrk 590 No Longer Fits the Role
• 1ES 1927+654: An AGN Caught Changing Look on a Timescale of Months
• GOODS-Herschel and CANDELS: The Morphologies of Ultraluminous Infrared Galaxies at z~2
• A Mid-IR Selected Changing-Look Quasar and Physical Scenarios for Abrupt AGN Fading
• A tidal disruption flare in a massive galaxy? Implications for the fuelling mechanisms of nuclear black holes
• The destruction and recreation of the X-ray corona in a changing-look Active Galactic Nucleus
• Towards an Understanding of Changing-Look Quasars: An Archival Spectroscopic Search in SDSS
• Mid-infrared variability of changing-look AGN
• iPTF Discovery of the Rapid "Turn On" of a Luminous Quasar
• The Host Galaxies of Narrow-Line Seyfert 1s: Evidence for Bar-Driven Fueling
• Nuclear spirals in galaxies: gas response to asymmetric potential. II. Hydrodynamical models
• The Host Galaxies of Tidal Disruption Events
• X-rays across the galaxy population - III. The incidence of AGN as a function of star formation rate
• Understanding extreme quasar optical variability with CRTS: I. Major AGN flares
• Quasar Viscosity Crisis
• A New Class of Changing-Look LINERs
• Tidal Disruption Event Host Galaxies in the Context of the Local Galaxy Population
• Dependence of the optical/UV variability on the emission line properties and Eddington ratio in active galactic nuclei
• Probing the Balance of AGN and Star-Forming Activity in the Local Universe with ChaMP
• On the lifetime of merger features of equal-mass disk mergers
• Disc instabilities and semi-analytic modelling of galaxy formation
• Active Galactic Nuclei in Void Regions
• Comparison of the X-ray emission from Tidal Disruption Events with those of Active Galactic Nuclei
• NGC 3065: A Certified LINER With Broad, Variable Balmer Lines
• Optical Variability of Narrow-Line Seyfert 1 Galaxies
• The Spatial Clustering of Low Luminosity AGN
• Initial results from a systematic search for changing-look active galactic nuclei selected via mid-infrared variability
• Discovery of A Mg II Changing-look AGN and its Implications for a Unification Sequence of Changing-look AGNs
• Stellar tidal disruption candidates found by cross-correlating the ROSAT Bright Source Catalogue and XMM-Newton observations
• The AGN nature of 11 out of 12 Swift/RXTE unidentified sources through optical and X-ray spectroscopy
• The Role of Active Galactic Nuclei in the Quenching of Massive Galaxies in the SQuiGGLE Survey
• MUSE observations of a changing-look AGN I: The re-appearance of the broad emission lines
• High-redshift Extreme Variability Quasars from Sloan Digital Sky Survey Multi-Epoch Spectroscopy
• AGN duty cycle estimates for the ultra-steep spectrum radio relic VLSS J1431.8+1331
• Highly variable AGN from the XMM-Newton Slew Survey
• Gemini Imaging of the Host Galaxies of Changing-Look Quasars
• The ensemble optical variability of type-1 AGN in the Sloan Digital Sky Survey Data Release 7
• SkyMapper colours of Seyfert galaxies and Changing-Look AGN

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• X-ray Quasi-Periodic Eruptions from two previously quiescent galaxies
• The Time Domain Spectroscopic Survey: Changing-Look Quasar Candidates from Multi-Epoch Spectroscopy in SDSS-IV
• Evidence for the preferential disruption of moderately massive stars by supermassive black holes
• WISE view of changing-look AGNs: evidence for a transitional stage of AGNs
• A Systematic Analysis of Stellar Populations in the Host Galaxies of Changing-look AGNs
• Hosts and triggers of AGNs in the Local Universe
• Local Active Galactic Nuclei with Large Broad-Hα Variability Reside in Red Galaxies
• Repeating Partial Tidal Encounters of Sun-like Stars Leading to their Complete Disruption
• Mid-Infrared Outbursts in Nearby Galaxies: Nuclear Obscuration and Connections to Hidden Tidal Disruption Events and Changing-Look Active Galactic Nuclei
• Demographics of Tidal Disruption Events with L-Galaxies: I. Volumetric TDE rates and the abundance of Nuclear Star Clusters
• AGN lifetimes in UV-selected galaxies: a clue to supermassive black hole-host galaxy coevolution
• Active galactic nuclei catalog from the AKARI NEP Wide field
• Modeling Star Formation Histories of Changing-Look AGN Host Galaxies with Prospector
• Velocity offset between emission and absorption lines might be an effective indicator of dual core system
• Active Galactic Nuclei in the Green Valley at z$\sim$0.7
• Identifying Changing-Look AGN Transitions in Light Curve Data with the Zwicky Transient Facility
• Quiescent Host Galaxies of Extended Quasars Revealed by Spectrophotometric Decomposition
• Merger Driven or Internal Evolution? A New Morphological Study of Tidal Disruption Event Host Galaxies