ALMA survey of a massive node of the Cosmic Web at $z\sim 3$. II. A dynamically cold and massive disk galaxy in the proximity of a hyperluminous quasar

Abstract

Advancing our understanding of the formation and evolution of early massive galaxies and black holes requires detailed studies of dense structures in the high-redshift Universe. In this work, we present high-angular resolution ($\simeq 0.3^{\prime \prime }$) ALMA observations targeting the CO(4--3) line and the underlying 3-mm dust continuum toward the Cosmic Web node MQN01, a region identified through deep multiwavelength surveys as one of the densest concentrations of galaxies and AGN at cosmic noon. At the center of this structure, we identify a massive, rotationally supported disk galaxy located approximately at $\sim 10\mathrm{kpc}$ projected-distance and $\sim -300\mathrm{km}{\mathrm{s}}^{-1}$ from a hyperluminous quasar at $z=3.2510$. By accurately modeling the cold gas kinematics, we determine a galaxy dynamical mass of $2.5\times 10^{11}{M}_{\odot }$ within the inner $\simeq 4\mathrm{kpc}$, and a high degree of rotational support of $V_{\mathrm{rot}}/\sigma \approx 11$. This makes it the first quasar companion galaxy confirmed as a massive, dynamically cold rotating disk at such an early cosmic epoch. Despite the small projected separation from the quasar host, we find no clear evidence of strong tidal interactions affecting the galaxy disk. This might suggest that the quasar is a satellite galaxy in the early stages of a merger. Furthermore, our spectroscopic analysis reveals a broad, blueshifted component in the CO(4--3) line profile of the quasar host, which may trace a powerful molecular outflow or kinematic disturbances induced by its interaction with the massive companion galaxy. Our findings show that rotationally supported cold disks are able to survive even in high-density environments of the early Universe.

Accepted for publication in A&A. 16 pages, 10 figures, 2 appendices

References in corpus (68)

• Array Programming with NumPy
• The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package
• Cosmic Star Formation History
• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• Cold streams in early massive hot haloes as the main mode of galaxy formation
• Formation of Massive Galaxies at High Redshift: Cold Streams, Clumpy Disks and Compact Spheroids
• The Science Performance of JWST as Characterized in Commissioning
• 350 Micron Dust Emission from High Redshift Quasars
• SHARC-2 350 Micron Observations of Distant Submillimeter Selected Galaxies
• The Main Sequence of star-forming galaxies across cosmic times
• Evidence for Quasar Activity Triggered by Galaxy Mergers in HST Observations of Dust-reddened Quasars
• Black Holes on FIRE: Stellar Feedback Limits Early Feeding of Galactic Nuclei
• Rapidly star-forming galaxies adjacent to quasars at redshifts exceeding 6
• The WISSH Quasars Project I. Powerful ionised outflows in hyper-luminous quasars
• A dynamically cold disk galaxy in the early Universe
• The Art of Measuring Physical Parameters in Galaxies: A Critical Assessment of Spectral Energy Distribution Fitting Techniques
• Dynamical properties of z $\sim 4.5$ dusty star-forming galaxies and their connection with local early type galaxies
• The KMOS^3D Survey: data release and final survey paper
• Star formation rate and dynamical mass of 10^8 solar mass black hole host galaxies at redshift 6
• EIGER I. a large sample of [OIII]-emitting galaxies at $5.3<z<6.9$ and direct evidence for local reionization by galaxies
• A Cold, Massive, Rotating Disk Galaxy 1.5 Billion Years after the Big Bang
• Normal, Dust-Obscured Galaxies in the Epoch of Reionization
• ALMA Observations Show Major Mergers Among the Host Galaxies of Fast-growing, High-redshift Supermassive Black Holes
• A massive stellar bulge in a regularly rotating galaxy 1.2 billion years after the Big Bang
• Detection of stellar light from quasar host galaxies at redshifts above 6
• The Kinematics of z ~ 6 Quasar Host Galaxies
• Quasar Feedback in the Ultraluminous Infrared Galaxy F11119+3257: Connecting the Accretion Disk Wind with the Large-Scale Molecular Outflow
• Kinematics of $z\ge 6$ galaxies from [CII] line emission
• 400 pc Imaging of a Massive Quasar Host Galaxy at a Redshift of 6.6
• Fast rotating and low-turbulence discs at $z\simeq 4.5$: Dynamical evidence of their evolution into local early-type galaxies
• The WISSH quasars Project: II. Giant star nurseries in hyper-luminous quasars
• Growing black holes and galaxies: black hole accretion versus star formation rate
• The CO Tully-Fisher Relation and Implications for the Host Galaxies of High-Redshift Quasars
• The WISSH QSOs project IX. Cold gas content and environment of luminous QSOs at z~2.4-4.7
• Regular rotation and low turbulence in a diverse sample of z ~ 4.5 galaxies observed with ALMA
• The ALMA Interferometric Pipeline Heuristics
• Evidence for supernova feedback sustaining gas turbulence in nearby star-forming galaxies
• On the discovery of fast molecular gas in the UFO/BAL quasar APM 08279+5255 at z=3.912
• Systematic difference between ionized and molecular gas velocity dispersion in $z\sim 1-2$ disks and local analogues
• An ALMA multi-line survey of the ISM in two quasar host-companion galaxy pairs at $z>6$
• The ALMA-ALPAKA survey I: high-resolution CO and [CI] kinematics of star-forming galaxies at z = 0.5-3.5
• Dynamically cold disks in the early Universe: myth or reality?
• Molecular gas in z~6 quasar host galaxies
• Opening the era of quasar host studies at high redshift with JWST
• Extreme star formation events in quasar hosts over $0.5<\text{z}<4$
• Impact of X-rays on CO emission from high-z galaxies
• Clumpy and Extended Starbursts in the Brightest Unlensed Submillimeter Galaxies
• The Mass Scale of High-Redshift Galaxies: Virial Mass Estimates Calibrated with Stellar Dynamical Models from LEGA-C
• AGN feedback in a galaxy merger: Multi-phase, galaxy-scale outflows including a fast molecular gas blob ~6 kpc away from IRAS F08572+3915
• Cold gas disks in main-sequence galaxies at cosmic noon: Low turbulence, flat rotation curves, and disk-halo degeneracy
• The hidden side of cosmic star formation at z > 3: Bridging optically-dark and Lyman break galaxies with GOODS-ALMA
• A sensitive APEX and ALMA CO(1-0), CO(2-1), CO(3-2), and [CI](1-0) spectral survey of 40 local (U)LIRGs
• The ALMA-ALPAKA survey II. Evolution of turbulence in galaxy disks across cosmic time: difference between cold and warm gas
• A cosmic stream of atomic carbon gas connected to a massive radio galaxy at redshift 3.8
• Detection of companion galaxies around hot dust-obscured hyper-luminous galaxy W0410-0913
• Multi-phase black-hole feedback and a bright [CII] halo in a Lo-BAL quasar at $z\sim 6.6$
• Observing the host galaxies of high-redshift quasars with JWST: predictions from the BlueTides simulation
• Star-formation rate and stellar mass calibrations based on infrared photometry and their dependence on stellar population age and extinction
• HYPERION. Coevolution of supermassive black holes and galaxies at $z>6$ and the build-up of massive galaxies
• High-redshift quasars along the Main Sequence
• Resolving Disks & Mergers in $z\sim 2$ Heavily Reddened Quasars and their Companion Galaxies with ALMA
• SMM J04135+10277: A distant QSO-starburst system caught by ALMA
• Dynamical modelling and origin of gas turbulence in z $\sim$ 4.5 galaxies
• Kinematics and Mass Distributions for Non-Spherical Deprojected Sérsic Density Profiles and Applications to Multi-Component Galactic Systems
• A Giant Disk Galaxy Two Billion Years After The Big Bang
• JCMT/SCUBA-2 uncovers an excess of $850\mu$m counts on megaparsec scales around high-redshift quasars. Characterization of the overdensities and their alignment with the quasars' Ly$\alpha$ nebulae
• Kinematic analysis of $\mathbf{z}=4.3$ galaxies in the SPT2349$-$56 protocluster core
• Connecting the growth of galaxies to the large-scale environment in a massive node of the Cosmic Web at z~3

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• Resolving circumgalactic gas flows around a z$\approx$3.6 quasar using MUSE and ALMA