PASSAGES: The Discovery of a Strongly Lensed Protocluster Core Candidate at Cosmic Noon

Abstract

Investigating the processes by which galaxies rapidly build up their stellar mass during the peak of their star formation ($z=2-3$) is crucial to advancing our understanding of the assembly of large-scale structures. We report the discovery of one of the most gas- and dust-rich protocluster core candidates, PJ0846+15 (J0846), from the Planck All-Sky Survey to Analyze Gravitationally lensed Extreme Starbursts (PASSAGES) sample. The exceedingly high total star formation rate (SFR) uncorrected for lensing magnification ($\mu$) of $\mu \text{SFR}=39900_{-12900}^{+23000}{\text{ M}}_{\odot }{\text{ yr}}^{-1}$ is the result of a foreground cluster lensing at least 11 dusty star-forming galaxies between $z=2.660-2.669$, where the intrinsic value is estimated to be $\text{SFR}=5200_{-2000}^{+3200}{\text{ M}}_{\odot }{\text{ yr}}^{-1}$. Atacama Large Millimeter Array (ALMA) observations uncovered 18 CO(3--2) emission-line detections, some of which are multiply-imaged systems, lensed by a foreground cluster at $z=0.77$. We present the first multi-wavelength characterization of this field, constructing a lens model that predicts that these 11 galaxies ($\mu \simeq 1.5-25$) are contained within a projected physical extent of $280\times 150\text{ kpc}$, with a velocity dispersion of ${\sigma }_v=246\pm 72{\text{ km s}}^{-1}$. J0846 exhibits the rare case of a protocluster candidate whose core is strongly-lensed, offering a magnified view of the rapid stellar buildup within an overdense environment at Cosmic Noon.

arXiv comment24 pages, 9 Figures

References in corpus (95)

• emcee: The MCMC Hammer
• The Structure of Cold Dark Matter Halos
• Star Formation in Galaxies Along the Hubble Sequence
• Cosmic Star Formation History
• Detailed Structural Decomposition of Galaxy Images
• The Average Star Formation Histories of Galaxies in Dark Matter Halos from z=0-8
• Cold streams in early massive hot haloes as the main mode of galaxy formation
• Gasdynamics and Starbursts in Major Mergers
• CASA, the Common Astronomy Software Applications for Radio Astronomy
• Molecular Gas at High Redshift
• Shocks and cold fronts in galaxy clusters
• Submillimeter Galaxies at z~2: Evidence for Major Mergers & Constraints on Lifetimes, IMF and CO-H2 Conversion Factor
• Automated data reduction workflows for astronomy
• A New Method For Galaxy Cluster Detection I: The Algorithm
• A Large Structure of Galaxies At Redshift z~3 and its Cosmological Implications
• The SCUBA Local Universe Galaxy Survey I: First Measurements of the Submillimetre Luminosity and Dust Mass Functions
• ISM masses and the star formation law at Z = 1 to 6 // ALMA observations of dust continuum in 145 galaxies in the COSMOS survey field
• On the effect of the Cosmic Microwave Background in high-redshift (sub-)millimeter observations
• The Data Processing Pipeline for the MUSE Instrument
• Ancient Light from Young Cosmic Cities: Physical and Observational Signatures of Galaxy Proto-Clusters
• The Mass Distribution of SDSS J1004+4112 Revisited
• ZAP -- Enhanced PCA Sky Subtraction for Integral Field Spectroscopy
• The realm of the galaxy protoclusters
• The Evolution of ISM Mass Probed by Dust Emission -- ALMA Observations at z = 0.3 to 2
• Hydrodynamics of high-redshift galaxy collisions: From gas-rich disks to dispersion-dominated mergers and compact spheroids
• A Spitzer-Selected Galaxy Cluster at z=1.62
• Lyman-alpha Emission from a Luminous z=8.68 Galaxy: Implications for Galaxies as Tracers of Cosmic Reionization
• ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: Survey Description
• Massive Star Formation in Galaxies: Radiative transfer models of the UV to mm emission of starburst galaxies
• Discovery of a galaxy cluster with a violently starbursting core at z=2.506
• Galaxy Clusters around radio-loud AGN at 1.3 < z < 3.2 as seen by Spitzer
• The Frontier Fields Lens Modeling Comparison Project
• Galaxy Protoclusters as Drivers of Cosmic Star-Formation History in the First 2 Gyr
• A massive core for a cluster of galaxies at a redshift of 4.3
• Evidence for a clumpy, rotating gas disk in a submillimeter galaxy at z=4
• An extreme proto-cluster of luminous dusty starbursts in the early Universe
• What are Protoclusters? -- Defining High Redshift Galaxy Clusters and Protoclusters
• New Multiply-Lensed Galaxies Identified in ACS/NIC3 Observations of Cl0024+1654 Using an Improved Mass Model
• Starbursts triggered by inter-galactic tides and interstellar compressive turbulence
• An excess of dusty starbursts related to the Spiderweb galaxy
• IDCS J1426+3508: Discovery of a Massive, IR-Selected Galaxy Cluster at z = 1.75
• Optical Spectroscopy and Velocity Dispersions of Galaxy Clusters from the SPT-SZ Survey
• The Ubiquity of Coeval Starbursts in Massive Galaxy Cluster Progenitors
• ALMA Deep Field in SSA22: A concentration of dusty starbursts in a z=3.09 protocluster core
• Do submillimeter galaxies really trace the most massive dark matter halos? Discovery of a high-z cluster in a highly active phase of evolution
• BLOBCAT: Software to Catalogue Flood-Filled Blobs in Radio Images of Total Intensity and Linear Polarization
• Early results from GLASS-JWST. XIV: A spectroscopically confirmed protocluster 650 million years after the Big Bang
• The progeny of a Cosmic Titan: a massive multi-component proto-supercluster in formation at z=2.45 in VUDS
• Massive starburst galaxies in a z=2.16 proto-cluster unveiled by panoramic H-alpha mapping
• H-alpha emitters in z~2 proto-clusters: evidence for faster evolution in dense environments
• Planck's Dusty GEMS: Gravitationally lensed high-redshift galaxies discovered with the Planck survey
• SILVERRUSH. VIII. Spectroscopic Identifications of Early Large Scale Structures with Protoclusters Over 200 Mpc at z~6-7: Strong Associations of Dusty Star-Forming Galaxies
• GOLDRUSH. III. A Systematic Search of Protoclusters at $z\sim 4$ Based on the $>100\mathrm{de}{\mathrm{g}}^2$ Area
• Why z > 1 radio-loud galaxies are commonly located in proto-clusters
• Star Formation and AGN Activity in Galaxy Clusters from $z=1-2$: a Multi-wavelength Analysis Featuring $Herschel$/PACS
• Turbulent Gas in Lensed Planck-selected Starbursts at redshifts 1-3.5
• ALMA Deep Field in SSA22: Source Catalog and Number Counts
• ALMA Observations of Gas-Rich Galaxies in z~1.6 Galaxy Clusters: Evidence for Higher Gas Fractions in High-Density Environments
• The systematics of strong lens modeling quantified: the effects of constraint selection and redshift information on magnification, mass, and multiple image predictability
• Surveying Galaxy Proto-clusters in Emission: A Large-scale Structure at z=2.44 and the Outlook for HETDEX
• Early Science with the Large Millimeter Telescope: Observations of Extremely Luminous High-z Sources Identified by Planck
• The ALMA Interferometric Pipeline Heuristics
• Emergence of an Ultra-Red Ultra-Massive Galaxy Cluster Core at $z=4$
• Spitzer IRAC Infrared Colours of Submillimetre-bright Galaxies
• JWST's PEARLS: a new lens model for ACT-CL J0102$-$4915, "EL Gordo'', and the first red supergiant star at cosmological distances discovered by JWST
• Fast Calculation of Gravitational Lensing Properties of Elliptical Navarro-Frenk-White and Hernquist Density Profiles
• The ALMA-ALPAKA survey I: high-resolution CO and [CI] kinematics of star-forming galaxies at z = 0.5-3.5
• Merger driven star-formation activity in Cl J1449+0856 at z=1.99 as seen by ALMA and JVLA
• The nature of a gravitationally lensed sub-millimetre arc in MS0451.6-0305: two interacting galaxies at z~2.9?
• COALAS: I. ATCA CO(1-0) survey and luminosity function in the Spiderweb protocluster at z=2.16
• A lensed protocluster candidate at $z=7.66$ identified in JWST observations of the galaxy cluster SMACS0723-7327
• Comprehensive Gas Characterization of a $z=2.5$ Protocluster: A Cluster Core Caught in the Beginning of Virialization?
• The red sequence at birth in the galaxy cluster ClJ1449+0856 at z=2
• ALMA Lensing Cluster Survey: an ALMA galaxy signposting a MUSE galaxy group at z=4.3 behind 'El Gordo'
• Is there enough star formation in simulated protoclusters?
• Halo Concentration, Galaxy Red Fraction, and Gas Properties of Optically-defined Merging Clusters
• Very Compact Dense Galaxy Overdensity with δ ~ 130 Identified at z ~ 8: Implications for Early Protocluster and Cluster-Core Formation
• Cluster induced quenching of galaxies in the massive cluster XMMXCSJ2215.9-1738 at z~1.5 traced by enhanced metallicities inside half R200
• Rethinking Lensing and Lambda
• Evidence for a gas-rich major merger in a proto-cluster at z=2.5
• A CO-rich merger shaping a powerful and hyper-luminous infrared radio galaxy at z=2: the Dragonfly Galaxy
• Paper 1: The JWST PEARLS View of the El Gordo Galaxy Cluster and of the Structure It Magnifies
• A ~600 pc view of the strongly-lensed, massive main sequence galaxy J0901: a baryon-dominated, thick turbulent rotating disk with a clumpy cold gas ring at z = 2.259
• PASSAGES: The Large Millimeter Telescope and ALMA Observations of Extremely Luminous High Redshift Galaxies Identified by the Planck
• Disentangling a group of lensed submm galaxies at z~2.9
• The "Red Radio Ring": Ionised and Molecular Gas in a Starburst/Active Galactic Nucleus at $z\sim 2.55$
• Discovery of a lensed ultrabright submillimeter galaxy at z=2.0439
• A Radio-to-millimeter Census of Star-forming Galaxies in Protocluster 4C~23.56 at z = 2.5 : Global and local gas kinematics
• Kinematic analysis of $\mathbf{z}=4.3$ galaxies in the SPT2349$-$56 protocluster core
• Spatially resolved dust properties over 50 kpc in a hyperluminous galaxy merger at $z=4.6$
• Galaxy populations in protoclusters at cosmic noon
• The Dragonfly Galaxy. III. Jet-brightening of a High-redshift Radio Source Caught in a Violent Merger of Disk Galaxies
• Exotic Image Formation in Strong Gravitational Lensing by Clusters of Galaxies -- IV. Elliptical NFW Lenses and Hyperbolic Umbilics
• A Large Molecular Gas Reservoir in the Protocluster SPT2349$-$56 at $z=4.3$
• Molecular gas in a gravitationally lensed galaxy group at $z=2.9$