An Amusing Look at the Host of the Periodic Nuclear Transient ASASSN-14ko Reveals a Second AGN

Abstract

We present Multi-Unit Spectroscopic Explorer (MUSE) integral-field spectroscopy of ESO 253$-$G003, which hosts a known Active Galactic Nucleus (AGN) and the periodic nuclear transient ASASSN-14ko, observed as part of the All-weather MUse Supernova Integral-field of Nearby Galaxies (AMUSING) survey. The MUSE observations reveal that the inner region hosts two AGN separated by $1.4\pm 0.1\mathrm{kpc}$ ($\approx 1.{}^{\prime \prime }7$). The brighter nucleus has asymmetric broad, permitted emission-line profiles and is associated with the archival AGN designation. The fainter nucleus does not have a broad emission-line component but exhibits other AGN characteristics, including $v_{\mathrm{FWHM}}\approx 700\mathrm{km}{\mathrm{s}}^{-1}$ forbidden line emission, ${\log }_{10}([\mathrm{OIII}]/\mathrm{H}\beta )\approx 1.1$, and high excitation potential emission lines such as [Fe VII]$\lambda 6086$ and He II$\lambda 4686$. The host galaxy exhibits a disturbed morphology with large kpc-scale tidal features, potential outflows from both nuclei, and a likely superbubble. A circular relativistic disk model cannot reproduce the asymmetric broad emission-line profiles in the brighter nucleus, but two non-axisymmetric disk models provide good fits to the broad emission-line profiles: an elliptical disk model and a circular disk + spiral arm model. Implications for the periodic nuclear transient ASASSN-14ko are discussed.

arXiv comment20 pages, 16 figures, and 2 tables. Accepted by MNRAS

References in corpus (103)

• The Sloan Digital Sky Survey: Technical Summary
• Gaia Data Release 2. Summary of the contents and survey properties
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• The Gaia mission
• 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
• Theoretical Modeling of Starburst Galaxies
• The Host Galaxies and Classification of Active Galactic Nuclei
• The Man Behind the Curtain: X-rays Drive the UV through NIR Variability in the 2013 AGN Outburst in NGC 2617
• A Unified, Merger-Driven Model for the Origin of Starbursts, Quasars, the Cosmic X-Ray Background, Supermassive Black Holes and Galaxy Spheroids
• Gasdynamics and Starbursts in Major Mergers
• Physical Models of Galaxy Formation in a Cosmological Framework
• The All-Sky Automated Survey for Supernovae (ASAS-SN) Light Curve Server v1.0
• Gaia Data Release 2: Photometric content and validation
• Mapping Large-Scale Gaseous Outflows in Ultraluminous Galaxies with Keck II ESI Spectra: Variations in Outflow Velocity with Galactic Mass
• Absorption-Line Probes of Gas and Dust in Galactic Superwinds
• A comprehensive classification of galaxies in the SDSS: How to tell true from fake AGN?
• A Spectroscopic Catalog of 10 Distant Rich Clusters of Galaxies
• Kiloparsec-scale outflows are prevalent among luminous AGN: outflows and feedback in the context of the overall AGN population
• A Continuum of H- to He-Rich Tidal Disruption Candidates With a Preference for E+A Galaxies
• Massive black hole binary mergers within sub-pc scale gas discs
• Galaxy pairs in the Sloan Digital Sky Survey - IV: Interactions trigger AGN
• Major Galaxy Mergers Only Trigger the Most Luminous AGN
• Radiative feedback from massive black holes in elliptical galaxies. AGN flaring and central starburst fueled by recycled gas
• The Environment of ``E+A'' Galaxies
• Cooling flows and quasars: II. Detailed models of feedback modulated accretion flows
• Self-regulated growth of supermassive black holes by a dual jet/heating AGN feedback mechanism: methods, tests and implications for cosmological simulations
• Outflows from AGN: Kinematics of the Narrow-Line and Coronal-Line Regions in Seyfert Galaxies
• Dusty, Radiation Pressure Dominated Photoionization. I. Model Description, Structure And Grids
• Massive Black Hole Binary Evolution
• Galaxy-Wide Shocks in Late-Merger Stage Luminous Infrared Galaxies
• Keck Absorption-Line Spectroscopy of Galactic Winds in Ultraluminous Infrared Galaxies
• Strongly star forming galaxies in the local Universe with nebular He II 4686 emission
• Massive Black Hole Binary Mergers in Dynamical Galactic Environments
• Efficient Merger of Binary Supermassive Black Holes in Merging Galaxies
• Towards a Complete Census of AGNs in Nearby Galaxies: A Large Population of Optically Unidentified AGNs
• A Candidate Sub-Parsec Supermassive Binary Black Hole System
• Tidal Disruption Events Prefer Unusual Host Galaxies
• Suppressing star formation in quiescent galaxies with supermassive black hole winds
• Galaxy Interactions Trigger Rapid Black Hole Growth: an unprecedented view from the Hyper Suprime-Cam Survey
• The subarcsecond mid-infrared view of local active galactic nuclei: I. The N- and Q-band imaging atlas
• The Merger History of Supermassive Black Holes in Galaxies
• A dust-enshrouded tidal disruption event with a resolved radio jet in a galaxy merger
• Gaia Data Release 2: processing of the photometric data
• The tidal disruption rate in dense galactic cusps containing a supermassive binary black hole
• AGN outflows trigger starbursts in gas-rich galaxies
• Enhanced tidal disruption rates from massive black hole binaries
• Evolution of the Nuclear Accretion Disk Emission in NGC 1097: Getting Closer to the Black Hole
• The flux ratio of the [OIII] 5007,4959 lines in AGN: Comparison with theoretical calculations
• Galaxy Mergers Drive Shocks: an Integral Field Study of GOALS galaxies
• Characterising the environments of supernovae with MUSE
• VLT-VIMOS integral field spectroscopy of luminous and ultraluminous infrared galaxies II. Evidence for shock ionization caused by tidal forces in the extra-nuclear regions of interacting and merging LIRGs
• Steps toward Determination of the Size and Structure of the Broad-Line Region in Active Galactic Nuclei. XII. Ground-Based Monitoring of 3C 390.3
• The Frequency of Active and Quiescent Galaxies with Companions: Implications for the Feeding of the Nucleus
• Accretion onto Black Holes from Large Scales Regulated by Radiative Feedback. II. Growth Rate and Duty Cycle
• Reverberation Mapping of Optical Emission Lines in Five Active Galaxies
• Mergers of Unequal Mass Galaxies: Supermassive Black Hole Binary Evolution and Structure of Merger Remnants
• PS18kh: A New Tidal Disruption Event with a Non-Axisymmetric Accretion Disk
• A Kiloparsec-Scale Binary Active Galactic Nucleus Confirmed by the Expanded Very Large Array
• Mergers Do Trigger AGNs out to z $\sim$ 0.6
• The AMUSING++ Nearby Galaxy Compilation: I. Full Sample Characterization and Galactic--Scale Outflows Selection
• A survey of dual active galactic nuclei in simulations of galaxy mergers: frequency and properties
• The Galactic radial abundance gradients of C, N, O, Ne, S, Cl and Ar from deep spectra of H II regions
• Long-Term Profile Variability in Active Galactic Nuclei with Double-Peaked Balmer Emission Lines
• A Large Systematic Search for Close Supermassive Binary and Rapidly Recoiling Black Holes - III. Radial Velocity Variations
• The origins of post-starburst galaxies at z<0.05
• The central parsec of NGC 3783: a rotating broad emission line region, asymmetric hot dust structure, and compact coronal line region
• Multiple Tidal Disruptions as an Indicator of Binary Super-Massive Black Hole Systems
• The Stellar Populations in the Central Parsecs of Galactic Bulges Central Stellar Populations
• Galaxy pairs in the Sloan Digital Sky Survey - XII: The fuelling mechanism of low excitation radio-loud AGN
• The Near-Infrared Coronal Line Spectrum of 54 Nearby Active Galactic Nuclei
• Starburst-AGN mixing: I. NGC 7130
• SDSS J0159+0105: A Radio-Quiet Quasar with a Centi-Parsec Supermassive Black Hole Binary Candidate
• Fitting LINER nuclei within the AGN family: A matter of obscuration?
• Nuclear coups: dynamics of black holes in galaxy mergers
• NGC6240: A triple nucleus system in the advanced or final state of merging
• Post-Starburst Galaxies in SDSS-IV MaNGA
• Type 1 AGN at low z. III. The optical narrow line ratios
• A New Diagnostic to Separate Line Emission from Star Formation, Shocks, and AGN Simultaneously in IFU Data
• Deep GEMINI GMOS-IFU spectroscopy of BAL QSOs: I. Decoupling the BAL, QSO, starburst, NLR, supergiant bubbles and galactic wind in Mrk 231
• Morphology of the coronal line region in active galactic nuclei
• The Evolution of Stars and Gas in starburst Galaxies
• MUSE Reveals a Recent Merger in the Post-starburst Host Galaxy of the TDE ASASSN-14li
• AT 2017gbl: a dust obscured TDE candidate in a luminous infrared galaxy
• EMPRESS. II. Highly Fe-Enriched Metal-poor Galaxies with $\sim 1.0$ (Fe/O)${}_{\odot }$ and $0.02$ (O/H)${}_{\odot }$ : Possible Traces of Super Massive ($>300M_{\odot }$) Stars in Early Galaxies
• The Shocking Power Sources of LINERs
• The Structure of Tidal Disruption Event Host Galaxies on Scales of Tens to Thousands of Parsecs
• Resolving the coronal line region of NGC1068 with near-infrared integral field spectroscopy
• Multi-phase outflows as probes of AGN accretion history
• Coronal Line Forest AGN I: physical properties of the emission-line regions
• Enhanced off-center stellar tidal disruptions by supermassive black holes in merging galaxies
• The X-ray View of Merger-Induced AGN Activity at Low Redshift
• A Trio of Massive Black Holes Caught in the Act of Merging
• MPDAF - A Python package for the analysis of VLT/MUSE data
• An Improved Test of the Binary Black Hole Hypothesis for Quasars with Double-peaked Broad Balmer Lines
• On the ionizing continuum in active galactic nuclei: clues from ISO
• Evolution of the accretion disk around the supermassive black hole of NGC 7213
• Four dual AGN candidates observed with the VLBA
• Direct n-body simulations of tidal disruption rate evolution in unequal-mass galaxy mergers
• Nuclear Infrared Spectral Energy Distribution of Type II Active Galactic Nuclei
• Multi-wavelength observations of the triple-peaked AGN Mrk 622

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