GA-NIFS: A massive black hole in a low-metallicity AGN at $z\sim 5.55$ revealed by JWST/NIRSpec IFS

Abstract

We present JWST/NIRSpec Integral Field Spectrograph rest-frame optical data of the compact $z=5.55$ galaxy GS_3073. Its prominent broad components in several hydrogen and helium lines (while absent in the forbidden lines), and the detection of a large equivalent width of He II$\lambda 4686$, EW(He II) ~ 20A, unambiguously identify it as an active galactic nucleus (AGN). We measure a gas-phase metallicity of $Z_{\mathrm{gas}}/Z_{\odot }\sim 0.21_{-0.04}^{+0.08}$, lower than what has been inferred for both more luminous AGN at similar redshift and lower redshift AGN. We empirically show that classical emission line ratio diagnostic diagrams cannot be used to distinguish between the primary ionisation source (AGN or star formation) for such low-metallicity systems, whereas different diagnostic diagrams involving He II$\lambda 4686$ prove very useful, independent of metallicity. We measure the central black hole mass to be $\log (M_{\mathrm{BH}}/M_{\odot })\sim 8.2\pm 0.4$ based on the luminosity and width of the broad line region of the H$\alpha$ emission. While this places GS_3073 at the lower end of known high-redshift black hole masses, it still appears to be over-massive compared to its host galaxy properties. We detect an outflow with projected velocity $\gtrsim 700$ km/s and infer an ionised gas mass outflow rate of about $100M_{\odot }/$yr, suggesting that GS_3073 is able to enrich the intergalactic medium with metals one billion years after the Big Bang.

arXiv comment17 pages, 10 figures; accepted for publication in A&A

References in corpus (153)

• The chemical composition of the Sun
• Galactic Stellar and Substellar Initial Mass Function
• On the variation of the Initial Mass Function
• The Seventh Data Release of the Sloan Digital Sky Survey
• Coevolution (Or Not) of Supermassive Black Holes and Host Galaxies
• The Host Galaxies of AGN
• The many lives of active galactic nuclei: cooling flows, black holes and the luminosities and colours of galaxies
• Energy input from quasars regulates the growth and activity of black holes and their host galaxies
• Observational Evidence of AGN Feedback
• Theoretical Modeling of Starburst Galaxies
• The broken hierarchy of galaxy formation
• CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey - The Hubble Space Telescope Observations, Imaging Data Products and Mosaics
• A Unified, Merger-Driven Model for the Origin of Starbursts, Quasars, the Cosmic X-Ray Background, Supermassive Black Holes and Galaxy Spheroids
• Overview of the SDSS-IV MaNGA Survey: Mapping Nearby Galaxies at Apache Point Observatory
• Cosmic-Ray Rejection by Laplacian Edge Detection
• Galactic Winds
• Heating Hot Atmospheres with Active Galactic Nuclei
• The Co-Evolution of Galaxies and Supermassive Black Holes: Insights from Surveys of the Contemporary Universe
• The SAURON project - IV. The mass-to-light ratio, the virial mass estimator and the fundamental plane of elliptical and lenticular galaxies
• First Results from the TNG50 Simulation: Galactic outflows driven by supernovae and black hole feedback
• Binary Population and Spectral Synthesis Version 2.1: construction, observational verification and new results
• Relations Between Central Black Hole Mass and Total Galaxy Stellar Mass in the Local Universe
• Estimating Black Hole Masses in Active Galaxies Using the Halpha Emission Line
• De Re Metallica: The cosmic chemical evolution of galaxies
• The SINS survey of z~2 galaxy kinematics: properties of the giant star forming clumps
• The Near-Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope I. Overview of the instrument and its capabilities
• The chemical composition of metal-poor emission-line galaxies in the Data Release 3 of the Sloan Digital Sky Survey
• Supermassive Black Holes in Active Galactic Nuclei. II. Calibration of the M-sigma Relationship for AGNs
• Strong Nebular Line Ratios in the Spectra of z~2-3 Star-forming Galaxies: First Results from KBSS-MOSFIRE
• AGN wind scaling relations and the co-evolution of black holes and galaxies
• Reevaluating Old Stellar Populations
• Outflows in Infrared-Luminous Starbursts at z < 0.5. II. Analysis and Discussion
• Dwarf Galaxies with Optical Signatures of Active Massive Black Holes
• Structural Parameters of Galaxies in CANDELS
• Kiloparsec-scale outflows are prevalent among luminous AGN: outflows and feedback in the context of the overall AGN population
• Theoretical Evolution of Optical Strong Lines across Cosmic Time
• Modelling the Galaxy Bimodality: Shutdown Above a Critical Halo Mass
• The MOSFIRE Deep Evolution Field (MOSDEF) Survey: Rest-Frame Optical Spectroscopy for ~1500 H-Selected Galaxies at 1.37 < z < 3.8
• Modelling and interpreting spectral energy distributions of galaxies with BEAGLE
• The Mass-Metallicity and the Fundamental Metallicity Relation revisited on a fully Te-based abundance scale for galaxies
• The Pan-STARRS1 distant z>5.6 quasar survey: more than 100 quasars within the first Gyr of the universe
• Keplerian Motion of Broad-Line Region Gas as Evidence for Supermassive Black Holes in Active Galactic Nuclei
• Eddington-limited accretion and the black hole mass function at redshift 6
• The Final SDSS High-Redshift Quasar Sample of 52 Quasars at z>5.7
• Modelling the nebular emission from primeval to present-day star-forming galaxies
• Nuclear activity versus star formation: emission-line diagnostics at ultraviolet and optical wavelengths
• The Multiphase Structure and Power Sources of Galactic Winds in Major Mergers
• Physical properties of 15 quasars at $z\gtrsim 6.5$
• The unusual emission line spectrum of IZw1
• An ALMA [CII] survey of 27 quasars at z>5.94
• New fully empirical calibrations of strong-line metallicity indicators in star forming galaxies
• The dark nemesis of galaxy formation: why hot haloes trigger black hole growth and bring star formation to an end
• The chemical enrichment in the early Universe as probed by JWST via direct metallicity measurements at z~8
• The MOSDEF Survey: The Evolution of the Mass-Metallicity Relation from $z=0$ to $z\sim 3.3$
• Improving Predictions for Helium Emission Lines
• The Cosmic BPT Diagram: Confronting Theory with Observations
• Emission-line Diagnostics of Low Metallicity AGN
• Nebular Emission Line Ratios in z~2-3 Star-Forming Galaxies with KBSS-MOSFIRE: Exploring the Impact of Ionization, Excitation, and Nitrogen-to-Oxygen Ratio
• Strongly star forming galaxies in the local Universe with nebular He II 4686 emission
• New insights into the stellar content and physical conditions of star-forming galaxies at z = 2-3 from spectral modelling
• The ALPINE-ALMA [CII] Survey: data processing, catalogs, and statistical source properties
• Galaxies with Wolf-Rayet signatures in the low-redshift Universe - A survey using the Sloan Digital Sky Survey
• Accretion and star formation rates in low redshift type-II active galactic nuclei
• Ionized gas outflows and global kinematics of low-z luminous star forming galaxies
• Evidence for Wide-Spread AGN Driven Outflows in the Most Massive z~1-2 Star Forming Galaxies
• The KMOS^3D Survey: Demographics and Properties of Galactic Outflows at z = 0.6 - 2.7
• Black hole mass estimates and emission-line properties of a sample of redshift z>6.5 quasars
• High-Ionization Emission in Metal-Deficient Blue Compact Dwarf Galaxies
• The Near-Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope III. Integral-field spectroscopy
• The SINS/zC-SINF survey of z~2 galaxy kinematics: Evidence for powerful AGN-driven nuclear outflows in massive star-forming galaxies
• Ejective and preventative: the IllustrisTNG black hole feedback and its effects on the thermodynamics of the gas within and around galaxies
• The CANDELS/SHARDS multi-wavelength catalog in GOODS-N: Photometry, Photometric Redshifts, Stellar Masses, Emission line fluxes and Star Formation Rates
• In-orbit Performance of the Near-Infrared Spectrograph NIRSpec on the James Webb Space Telescope
• An Explanation for the Observed Weak Size Evolution of Disk Galaxies
• Supermassive black holes in cosmological simulations I: M_BH-M_star relation and black hole mass function
• JADES: Probing interstellar medium conditions at $z\sim 5.5-9.5$ with ultra-deep JWST/NIRSpec spectroscopy
• The identification of z-dropouts in Pan-STARRS1: three quasars at 6.5<z<6.7
• The Black Hole Mass Scale of Classical and Pseudo Bulges in Active Galaxies
• The KMOS AGN Survey at High redshift (KASHz): the prevalence and drivers of ionised outflows in the host galaxies of X-ray AGN
• The ALPINE-ALMA [CII] Survey: Multi-Wavelength Ancillary Data and Basic Physical Measurements
• Quasar-Mode Feedback in Nearby Type 1 Quasars: Ubiquitous Kiloparsec-Scale Outflows and Correlations with Black Hole Properties
• Star formation rate and dynamical mass of 10^8 solar mass black hole host galaxies at redshift 6
• AGN-driven outflows without immediate quenching in simulations of high-redshift disk galaxies
• Type 1 low z AGN. I. Emission properties
• The FMOS-COSMOS survey of star-forming galaxies at z~1.6. IV: Excitation state and chemical enrichment of the interstellar medium
• Diagnostics for PopIII galaxies and Direct Collapse Black Holes in the early universe
• X-ray binaries as the origin of nebular HeII emission in low-metallicity star-forming galaxies
• Properties of the Multiphase Outflows in Local (Ultra)luminous Infrared Galaxies
• SDSS-IV MaNGA: Evidence of the importance of AGN feedback in low-mass galaxies
• A Population of Massive and Evolved Galaxies at z$\ga$5
• The Sloan Digital Sky Survey Reverberation Mapping Project: Estimating Masses of Black Holes in Quasars with Single-Epoch Spectroscopy
• A Candidate of a Least-Massive Black Hole at the First 1.1 Billion Years of the Universe
• The compact, ~1 kpc host galaxy of a quasar at z=7.1
• Upgrading electron temperature and electron density diagnostic diagrams of forbidden line emission
• The Subaru high-z quasar survey: discovery of faint z~6 quasars
• Quenching as a Contest between Galaxy Halos and their Central Black Holes
• Kiloparsec Scale Properties of Star-Formation Driven Outflows at z~2.3 in the SINS/zC-SINF AO Survey
• Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs) VIII. A less biased view of the early co-evolution of black holes and host galaxies
• Shocked Superwinds from the z~2 Clumpy Star-forming Galaxy, ZC406690
• The extended HeII4686-emitting region in IZw18 unveiled: clues for peculiar ionizing sources
• Synthetic nebular emission from massive galaxies I: origin of the cosmic evolution of optical emission-line ratios
• Spatially resolved electron density in the Narrow Line Region of z<0.02 radio AGNs
• A wide dispersion in star formation rate and dynamical mass of 10^8 solar mass black hole host galaxies at redshift 6
• Probing the interstellar medium and star formation of the Most Luminous Quasar at z=6.3
• The KLEVER Survey: Spatially resolved metallicity maps and gradients in a sample of 1.2 < z < 2.5 lensed galaxies
• The ALMA view of the high-redshift relation between supermassive black holes and their host galaxies
• A New Measurement of the Stellar Mass Density at z~5: Implications for the Sources of Cosmic Reionization
• The M_BH - M_star relation for X-ray obscured, red QSOs at 1.2< z <2.6
• Radio jets from AGN in dwarf galaxies in the COSMOS survey: mechanical feedback out to redshift $\sim$3.4
• Bubbles and outflows: the novel JWST/NIRSpec view of the z=1.59 obscured quasar XID2028
• AGN-Driven Outflows in Dwarf Galaxies
• Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). XIII. Large-scale Feedback and Star Formation in a Low-Luminosity Quasar at z = 7.07 on the Local Black Hole to Host Mass Relation
• A Tight Relation Between N/O Ratio and Galaxy Stellar Mass Can Explain the Evolution of Strong Emission Line Ratios with Redshift
• Synthetic nebular emission from massive galaxies II: ultraviolet-line diagnostics of dominant ionizing sources
• The Molecular and Ionized Gas Phases of an AGN-driven Outflow in a Typical Massive Galaxy at z=2
• A little FABLE: exploring AGN feedback in dwarf galaxies with cosmological simulations
• Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs) III. Star formation properties of the host galaxies at $z\gtrsim 6$ studied with ALMA
• The MOSDEF Survey: Detection of [OIII]$\lambda$4363 and the direct-method oxygen abundance of a star-forming galaxy at z=3.08
• Fast and energetic AGN-driven outflows in simulated dwarf galaxies
• Co-evolution of massive black holes and their host galaxies at high redshift: discrepancies from six cosmological simulations and the key role of JWST
• GA-NIFS: Black hole and host galaxy properties of two z$\simeq$6.8 quasars from the NIRSpec IFU
• The unusual NIV]-emitter galaxy GDS J033218.92-275302.7: star formation or AGN-driven winds from a massive galaxy at z=5.56
• Gas dynamics of a luminous $z$ = 6.13 quasar ULAS J1319$+$0950 revealed by ALMA high resolution observations
• Thermal and radiative AGN feedback have a limited impact on star formation in high-redshift galaxies
• Overmassive black holes in dwarf galaxies out to z$\sim$0.9 in the VIPERS survey
• 1D Kinematics from stars and ionized gas at $z\sim 0.8$ from the LEGA-C spectroscopic survey of massive galaxies
• First results from the JWST Early Release Science Program Q3D: The Warm Ionized Gas Outflow in z ~ 1.6 Quasar XID 2028 and its Impact on the Host Galaxy
• Radio AGN in nearby dwarf galaxies: the important role of AGN in dwarf-galaxy evolution
• The KLEVER survey: Nitrogen abundances at $z\sim$2 and probing the existence of a fundamental nitrogen relation
• The KMOS${}^{3D}$ Survey: rotating compact star forming galaxies and the decomposition of integrated line widths
• Chemical abundances of Seyfert 2 AGNs I. Comparing oxygen abundances from distinct methods using SDSS
• The Mass Scale of High-Redshift Galaxies: Virial Mass Estimates Calibrated with Stellar Dynamical Models from LEGA-C
• Integral-Field Spectroscopy of Fast Outflows in Dwarf Galaxies with AGN
• Dwarf AGNs from Optical Variability for the Origins of Seeds (DAVOS): Insights from the Dark Energy Survey Deep Fields
• A New Infrared Criterion for Selecting Active Galactic Nuclei to Lower Luminosities
• Ly-alpha emitters in the GOODS-S field: a powerful pure nebular SED with N IV] emission at z=5.563
• Multi-phase outflows in post starburst E+A galaxies -- I. General sample properties and the prevalence of obscured starbursts
• Do Some AGN Lack X-ray Emission?
• On the AGN nature of two UV bright sources at z_spec~5.5 in the CANDELS fields: an update of the AGN space density at M1450~-22.5
• From Nuclear to Circumgalactic: Zooming in on AGN-Driven Outflows at z~2.2 with SINFONI
• Physics of ULIRGs with MUSE and ALMA: The PUMA project I. Properties of the survey and first MUSE data results
• EMPRESS. VII. Ionizing Spectrum Shapes of Extremely Metal-Poor Galaxies: Uncovering the Origins of Strong HeII and the Impact on Cosmic Reionization
• Observational Constraints on the Multiphase Nature of Outflows Using Large Spectroscopic Surveys at $z\sim$0
• Active Galactic Nuclei from HeII: a more complete census of AGN in SDSS galaxies yields a new population of low-luminosity AGN in highly star-forming galaxies
• Unveiling hidden active nuclei in MaNGA star-forming galaxies with HeII$\lambda$4686 line emission
• Cool outflows in MaNGA: a systematic study and comparison to the warm phase
• The environment of AGN dwarf galaxies at z$\sim$0.7 from the VIPERS survey
• On the AGN Nature of Broad Balmer Emission in Four Low-Redshift Metal-Poor Galaxies
• Multi-wavelength observations of SDSS J105621.45+313822.1, a broad-line, low-metallicity AGN
• Active Galactic Nuclei with a Low-Metallicity Narrow-Line Region
• Helium line emissivities for nebular astrophysics
• The ALPINE-ALMA [CII] survey: double stellar population and AGN activity in a galaxy at $z\sim 5.5$
• Reconciling the Results of the z~2 MOSDEF and KBSS-MOSFIRE Surveys

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