ALMA Observations of Multiple-CO and C Lines Toward the Active Galactic Nucleus of NGC 7469: X-Ray-dominated Region Caught in the Act

Abstract

We used the Atacama Large Millimeter/submillimeter Array (ALMA) to map ${}^{12}$CO($J$ = 1-0), ${}^{12}$CO($J$ = 2-1), ${}^{12}$CO($J$ = 3-2), ${}^{13}$CO($J$ = 2-1), and [CI](${}^3{P}_1$-${}^3{P}_0$) emission lines around the type 1 active galactic nucleus (AGN) of NGC 7469 ($z=0.0164$) at $\sim 100$ pc resolutions. The CO lines are bright both in the circumnuclear disk (central $\sim 300$ pc) and the surrounding starburst (SB) ring ($\sim 1$ kpc diameter), with two bright peaks on either side of the AGN. By contrast, the [CI](${}^3{P}_1$-${}^3{P}_0$) line is strongly peaked on the AGN. Consequently, the brightness temperature ratio of [CI](${}^3{P}_1$-${}^3{P}_0$) to ${}^{13}$CO(2-1) is $\sim 20$ at the AGN, as compared to $\sim 2$ in the SB ring. Our local thermodynamic equilibrium (LTE) and non-LTE models indicate that the enhanced line ratios (or CI enhancement) are due to an elevated C${}^0$/CO abundance ratio ($\sim 3-10$) and temperature ($\sim 100-500$ K) around the AGN as compared to the SB ring (abundance ratio $\sim 1$, temperature $\lesssim 100$ K), which accords with the picture of the X-ray-dominated Region (XDR). Based on dynamical modelings, we also provide CO(1-0)-to- and [CI](${}^3{P}_1$-${}^3{P}_0$)-to-molecular mass conversion factors at the central $\sim 100$ pc of this AGN as ${\alpha }_{\mathrm{CO}}=4.1$ and ${\alpha }_{\mathrm{CI}}=4.4M_{\odot }$ (K km s${}^{-1}$ pc${}^2$)${}^{-1}$, respectively. Our results suggest that the CI enhancement is potentially a good marker of AGNs that could be used in a new submillimeter diagnostic method toward dusty environments.

arXiv comment25 pages, 12 figures, 8 tables. Accepted for publication in ApJ. Minor updates in a replacement

References in corpus (99)

• Dwarf Galaxies of the Local Group
• The CO-to-H2 Conversion Factor
• The Star Formation Efficiency in Nearby Galaxies: Measuring Where Gas Forms Stars Effectively
• Stellar mass-to-light ratios and the Tully-Fisher relation
• A computer program for fast non-LTE analysis of interstellar line spectra
• An atomic and molecular database for analysis of submillimetre line observations
• The IRAS Revised Bright Galaxy Sample (RBGS)
• Molecular Gas at High Redshift
• Molecular Gas and Star Formation in Nearby Disk Galaxies
• Supermassive Black Holes in Active Galactic Nuclei. II. Calibration of the M-sigma Relationship for AGNs
• An XMM-Newton survey of broad iron lines in Seyfert galaxies
• The CO-to-H2 Conversion Factor and Dust-to-Gas Ratio on Kiloparsec Scales in Nearby Galaxies
• A Hubble Space Telescope Imaging Survey of Nearby Active Glactic Nuclei
• Efficient Multi-Gaussian Expansion of galaxies
• Molecular line emission in NGC1068 imaged with ALMA. I An AGN-driven outflow in the dense molecular gas
• Obscured Active Galactic Nuclei
• A Close Look at Star Formation around Active Galactic Nuclei
• Diagnostics of irradiated gas in galaxy nuclei. I: A Far-ultraviolet and X-ray dominated region code
• Diagnostics of irradiated dense gas in galaxy nuclei. II. A grid of XDR and PDR models
• NICMOS Imaging of Infrared-Luminous Galaxies
• Obscuration-dependent evolution of Active Galactic Nuclei
• A multi-transition HCN and HCO+ study of 12 nearby active galaxies: AGN versus SB environments
• Bars and Warps traced by the Molecular Gas in the Seyfert 2 Galaxy NGC 1068
• The CI lines as tracers of molecular gas, and their prospects at high redshifts
• Gas and Dust in the Cloverleaf Quasar at Redshift 2.5
• Nuclear star formation activity and black hole accretion in nearby Seyfert galaxies
• Improved Dynamical Constraints on the Masses of the Central Black Holes in Nearby Low-mass Early-type Galactic Nuclei And the First Black Hole Determination for NGC 205
• A Survey of Atomic Carbon at High Redshift
• Star Formation in Extreme Environments: The Effects of Cosmic Rays and Mechanical Heating
• Molecular line emission in NGC1068 imaged with ALMA: II. The chemistry of the dense molecular gas
• Molecules as tracers of galaxy evolution: an EMIR survey. I. Presentation of the data and first results
• The Origin of the X-ray and Ultraviolet Emission in NGC 7469
• ALMA observations of atomic carbon in z~4 dusty star-forming galaxies
• A Survey of Atomic Carbon [C I] in High-redshift Main-Sequence Galaxies
• The Nuclear Gas Dynamics and Star Formation of NGC 7469
• CI emission in Ultra Luminous Infrared Galaxies as a molecular gas mass tracer
• Circumnuclear Multi-phase Gas in the Circinus Galaxy II: The Molecular and Atomic Obscuring Structures Revealed with ALMA
• Millimeter Interferometric HCN(1-0) and HCO+(1-0) Observations of Luminous Infrared Galaxies
• VLBI Imaging of Luminous Infrared Galaxies: AGN Cores in Mrk231, UGC 5101 & NGC 7469
• Using [CI] to probe the Interstellar Medium in z~2.5 Sub-Millimeter Galaxies
• Atomic Carbon in Galaxies
• Reverberation Mapping of the Seyfert 1 Galaxy NGC 7469
• Modelling [CI] emission from turbulent molecular clouds
• Submillimeter Interferometry of the Luminous Infrared Galaxy NGC 4418: A Hidden Hot Nucleus with an Inflow and an Outflow
• On carbon and oxygen isotope ratios in starburst galaxies: New data from NGC253 and Mrk231 and their implications
• Radio structures of the nuclei of nearby Seyfert galaxies and the nature of the missing diffuse emission
• The properties of the interstellar medium of galaxies across time as traced by the neutral atomic carbon [CI]
• Submillimeter ALMA Observations of the Dense Gas in the Low-Luminosity Type-1 Active Nucleus of NGC 1097
• Herschel-SPIRE Imaging Spectroscopy of Molecular Gas in M82
• Comparison of Nuclear Starburst Luminosities between Seyfert 1 and 2 Galaxies Based on Near-infrared Spectroscopy
• The X-ray emission of local luminous infrared galaxies
• ALMA reveals starburst-like interstellar medium conditions in a compact star-forming galaxy at z ~ 2 using [CI] and CO
• Neutral Atomic Carbon in Centers of Galaxies
• An Alternative Accurate Tracer of Molecular Clouds: The "$X_{\mathrm{CI}}$-Factor"
• ALMA [CI]${}^3{P}_1{-}^3{P}_0$ observations of NGC6240: a puzzling molecular outflow, and the role of outflows in the global ${\alpha }_{\mathrm{CO}}$ factor of (U)LIRGs
• Are X-ray Emitting Coronae around Super Massive Black Holes Outflowing?
• Submillimeter-HCN Diagram for an Energy Diagnostics in the Centers of Galaxies
• A Hard X-ray Test of HCN Enhancements as a Tracer of Embedded Black Hole Growth
• Neutral carbon and CO in 76 (U)LIRGs and starburst galaxy centers A method to determine molecular gas properties in luminous galaxies
• The mass-energy budget of the ionised outflow in NGC 7469
• Do Circumnuclear Dense Gas Disks Drive Mass Accretion onto Supermassive Black Holes?
• Neutral Carbon Emission in luminous infrared galaxies The \CI\ Lines as Total Molecular Gas Tracers
• Resolving the Stellar Populations in the Circumnuclear Ring of NGC 7469
• AST/RO Observations of Atomic Carbon near the Galactic Center
• A large 12C/13C isotopic ratio in M82 and NGC253
• Modeling The Molecular Composition in an AGN Disk
• Dynamically Influenced Molecular Clouds in the Nucleus of NGC 6946: Variations in the CO Isotopic Line Ratios
• ALMA HCN and HCO+ J=3-2 observations of optical Seyfert and luminous infrared galaxies -- Confirmation of elevated HCN-to-HCO+ flux ratios in AGNs --
• High Spatial Resolution Mid-infrared Observations of Three Seyfert Galaxies
• Diagnostics of the Molecular Component of PDRs with Mechanical Heating
• New places and phases of CO-poor/CI-rich molecular gas in the Universe
• The hidden heart of the luminous infrared galaxy IC 860 I. A molecular inflow feeding opaque, extreme nuclear activity
• A High Signal-to-Noise UV Spectrum of NGC 7469: New Support for Reprocessing of Continuum Radiation
• Large-scale mapping observations of the CI(3P1-3P0) and CO(J=3-2) lines toward the Orion A molecular cloud
• ALMA Observations of the Submillimeter Dense Molecular Gas Tracers in the Luminous Type-1 Active Nucleus of NGC 7469
• Resolved neutral carbon emission in nearby galaxies: [CI] Lines as Total Molecular Gas Tracers
• Nuclear Bar Catalyzed Star Formation: 13^CO, C18^O and Molecular Gas Properties in the Nucleus of Maffei 2
• Planck's Dusty GEMS. VII. Atomic carbon and molecular gas in dusty starburst galaxies at z=2 to 4
• Probing high-redshift quasars with ALMA. I. Expected observables and potential number of sources
• Resolving the Bright HCN(1-0) Emission toward the Seyfert 2 Nucleus of M51: Shock Enhancement by Radio Jets and Weak Masing by Infrared Pumping?
• Diagnostics of the molecular component of PDRs with mechanical heating. II: line intensities and ratios
• ALMA view of the ${}^{12}$C/${}^{13}$C isotopic ratio in starburst galaxies
• A figure of merit for black hole mass measurements with molecular gas
• Extensive [CI] Mapping toward the Orion-A Molecular Cloud
• The MBHBM* Project -- I: Measurement of the Central Black Hole Mass in Dwarf Galaxy NGC 3504 Using Molecular Gas Kinematics
• Circumnuclear Multi-phase Gas in Circinus Galaxy I: Non-LTE calculations of CO lines
• Direct measurement of the [CI] luminosity to molecular gas mass conversion factor in high-redshift star-forming galaxies
• Gas and dust in NGC 7469: sub-mm imaging and CO J=3-2
• Velocity profiles of [CII], [CI], CO, and [OI] and physical conditions in four star-forming regions in the Large Magellanic Cloud
• Spatially resolved carbon and oxygen isotopic ratios in NGC 253 using optically thin tracers
• A Chandra and ALMA Study of X-ray-irradiated Gas in the Central ~100 pc of the Circinus Galaxy
• V, R, I and Halpha photometry of circumnuclear star forming regions in four galaxies with different levels of nuclear activity
• [CI](1-0) and [CI](2-1) in resolved local galaxies
• ALMA Observations of Atomic Carbon [C I] (${{}^3\mathrm{P}}_1\to {{}^3\mathrm{P}}_0$) and Low-$J$ CO Lines in the Starburst Galaxy NGC 1808
• An upper limit on the cosmic-ray luminosity of individual sources from gamma-ray observations
• NGC 7469 as seen by MEGARA: new results from high-resolution IFU spectroscopy
• ALMA [CI] observations toward the central region of a Seyfert galaxy NGC 613
• AGN X-ray irradiation of CO gas in NGC 2110 revealed by $Chandra$ and ALMA
• Optical detection of the radio supernova SN 2000ft in the circumnuclear region of the luminous infrared galaxy NGC 7469

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• A New Physical Picture for AGNs Lacking Optical Emission Lines
• Extremely Buried Nucleus of IRAS 17208$-$0014 Observed at Sub-Millimeter and Near-Infrared Wavelengths
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• CI and CO in Nearby Spiral Galaxies -- I. Line Ratio and Abundance Variations at ~ 200 pc Scales
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• Observed CN and HCN intensity ratios exhibit subtle variations in extreme galaxy environments
• Atomic Carbon [CI]${(}^3{P}_1{-}^3{P}_0)$ Mapping of the Nearby Galaxy M83
• Atomic Carbon in the Central Molecular Zone of the Milky Way : Possible Cosmic-ray Induced Chemistry or Time-Dependent Chemistry Associated with SNR Sagittarius A East
• WISDOM Project -- XXII. A 5% precision CO-dynamical supermassive black hole mass measurement in the galaxy NGC 383
• H1821+643: The most X-ray and infrared luminous AGN in the Swift/BAT survey in the process of rapid stellar and supermassive black hole mass assembly
• AstroSat observations of interacting galaxies NGC 7469 and IC 5283
• Tight correlation of star formation with [Ci] and CO lines across cosmic time