JADES + JEMS: A Detailed Look at the Buildup of Central Stellar Cores and Suppression of Star Formation in Galaxies at Redshifts 3 < z < 4.5

Abstract

We present a spatially resolved study of stellar populations in 6 galaxies with stellar masses $M_{\ast }\sim 10^{10}{M}_{\odot }$ at $z\sim 3.7$ using 14-filter JWST/NIRCam imaging from the JADES and JEMS surveys. The 6 galaxies are visually selected to have clumpy substructures with distinct colors over rest-frame $3600-4100\mathring{A}$, including a red, dominant stellar core that is close to their stellar-light centroids. With 23-filter photometry from HST to JWST, we measure the stellar-population properties of individual structural components via SED fitting using Prospector. We find that the central stellar cores are $\gtrsim 2$ times more massive than the Toomre mass, indicating they may not form via single in-situ fragmentation. The stellar cores have stellar ages of $0.4-0.7$ Gyr that are similar to the timescale of clump inward migration due to dynamical friction, suggesting that they likely instead formed through the coalescence of giant stellar clumps. While they have not yet quenched, the 6 galaxies are below the star-forming main sequence by $0.2-0.7$ dex. Within each galaxy, we find that the specific star formation rate is lower in the central stellar core, and the stellar-mass surface density of the core is already similar to quenched galaxies of the same masses and redshifts. Meanwhile, the stellar ages of the cores are either comparable to or younger than the extended, smooth parts of the galaxies. Our findings are consistent with model predictions of the gas-rich compaction scenario for the buildup of galaxies' central regions at high redshifts. We are likely witnessing the coeval formation of dense central cores, along with the onset of galaxy-wide quenching at $z>3$.

34 pages, 18 figures, ApJ in press

References in corpus (74)

• The propagation of uncertainties in stellar population synthesis modeling I: The relevance of uncertain aspects of stellar evolution and the IMF to the derived physical properties of galaxies
• 3D-HST+CANDELS: The Evolution of the Galaxy Size-Mass Distribution since $z=3$
• Formation of Massive Galaxies at High Redshift: Cold Streams, Clumpy Disks and Compact Spheroids
• Stellar Population Inference with Prospector
• From rings to bulges: evidence for rapid secular galaxy evolution at z~2 from integral field spectroscopy in the SINS survey
• Combined CO & Dust Scaling Relations of Depletion Time and Molecular Gas Fractions with Cosmic Time, Specific Star Formation Rate and Stellar Mass
• AGN Dusty Tori: I. Handling of Clumpy Media
• Compaction and Quenching of High-z Galaxies in Cosmological Simulations: Blue and Red Nuggets
• The Chandra Deep Field-South Survey: 7 Ms Source Catalogs
• COLD GASS, an IRAM legacy survey of molecular gas in massive galaxies: I. Relations between H2, HI, stellar content and structural properties
• The James Webb Space Telescope Mission
• The Evolution of Galaxy Structure over Cosmic Time
• The rapid formation a large rotating disk galaxy three billion years after the Big Bang
• Structure and star formation in galaxies out to z=3: evidence for surface density dependent evolution and upsizing
• Rapid formation of exponential disks and bulges at high redshift from the dynamical evolution of clump cluster and chain galaxies
• The Evolution of the Star-forming Interstellar Medium across Cosmic Time
• NIRCam Performance on JWST In Flight
• Bulge Formation by the Coalescence of Giant Clumps in Primordial Disk Galaxies
• The Main Sequence of star-forming galaxies across cosmic times
• On the (Non)Evolution of HI Disks over Cosmic Time
• The Cosmic Baryon and Metal Cycles
• Four phases of angular-momentum buildup in high-z galaxies: from cosmic-web streams through an extended ring to disc and bulge
• Evidence for Mature Bulges and an Inside-out Quenching Phase 3 Billion Years After the Big Bang
• Identification and properties of intense star-forming galaxies at redshifts z>10
• Kinemetry of SINS High-Redshift Star-Forming Galaxies: Distinguishing Rotating Disks from Major Mergers
• The Formation of Massive, Compact Galaxies at z=2 in the Illustris Simulation
• On the Lack of Evolution in Galaxy Star Formation Efficiency
• Color--Mass-to-Light Ratio Relations for Disk Galaxies
• Clumpy Galaxies in CANDELS. I. The Definition of UV Clumps and the Fraction of Clumpy Galaxies at 0.5<z<3
• Star-Forming Galaxies at Cosmic Noon
• A time-resolved picture of our Milky Way's early formation history
• A massive quiescent galaxy at redshift 4.658
• The Majority of Compact Massive Galaxies at z~2 are Disk Dominated
• On the Stellar Populations of Galaxies at z=9-11: The Growth of Metals and Stellar Mass at Early Times
• Clumpy Galaxies in GOODS and GEMS: Massive Analogs of Local Dwarf Irregulars
• A Survey of Galaxy Kinematics to z ~ 1 in the TKRS/GOODS-N Field. I. Rotation and Dispersion Properties
• Morphology and star formation in IllustrisTNG: the build-up of spheroids and discs
• Fast, Slow, Early, Late: Quenching Massive Galaxies at z~0.8
• JADES Imaging of GN-z11: Revealing the Morphology and Environment of a Luminous Galaxy 430 Myr After the Big Bang
• A surprising abundance of massive quiescent galaxies at 3 < z < 5 in the first data from JWST CEERS
• Stellar populations from spectroscopy of a large sample of quiescent galaxies at z > 1: Measuring the contribution of progenitor bias to early size growth
• The KMOS^3D Survey: data release and final survey paper
• The Evolution of the Baryons Associated with Galaxies Averaged over Cosmic Time and Space
• A New Census of the 0.2< z <3.0 Universe, Part II: The Star-Forming Sequence
• z~2: An Epoch of Disk Assembly
• Automated Mining of the ALMA Archive in the COSMOS Field (A3COSMOS): II. Cold Molecular Gas Evolution out to Redshift 6
• Predicting Quiescence: The Dependence of Specific Star Formation Rate on Galaxy Size and Central Density at 0.5<z<2.5
• A massive, dead disk galaxy in the early Universe
• The MUSE Hubble Ultra Deep Field surveys: Data release II
• Rotation Curves in z~1-2 Star-Forming Disks: Evidence for Cored Dark Matter Distributions
• The Multiwavelength Survey by Yale-Chile (MUSYC): Deep Near-Infrared Imaging and the Selection of Distant Galaxies
• Convolution kernels for multi-wavelength imaging
• A Massive Galaxy in its Core Formation Phase Three Billion Years After the Big Bang
• Connection Between Stellar Mass Distributions Within Galaxies and Quenching Since z =2
• The Bulge-Disk Decomposed Evolution of Massive Galaxies at 1<z<3 in CANDELS
• AGN Selection and Demographics in GOODS-S/HUDF from X-ray to Radio
• Stability of Galactic Gas Disks and the Formation of Massive Clusters
• Recovering the star formation histories of recently-quenched galaxies: the impact of model and prior choices
• The origin of pseudobulges in cosmological simulations of galaxy formation
• Dissecting the size-mass and ${\Sigma }_1$-mass relations at 1.0 < z < 2.5: galaxy mass profiles and color gradients as a function of spectral shape
• CLEAR II: Evidence for Early Formation of the Most Compact Quiescent Galaxies at High Redshift
• Physical Properties of Sub-galactic Clumps at 0.5 $\le z\le$ 1.5 in the UVUDF
• Evolution of the Fraction of Clumpy Galaxies at 0.2<z<1.0 in the COSMOS field
• Stellar Masses of Giant Clumps in CANDELS and Simulated Galaxies Using Machine Learning
• Structure Formation in Gas-Rich Galactic Discs with Finite Thickness: From Discs to Rings
• Exploring the stellar age distribution of the Milky Way Bulge using APOGEE
• Coincidence between morphology and star-formation activity through cosmic time: the impact of the bulge growth
• The ASTRODEEP-GS43 catalogue: new photometry and redshifts for the CANDELS GOODS-South field
• Reconstructing the Assembly of Massive Galaxies. I: The Importance of the Progenitor Effect in the Observed Properties of Quiescent Galaxies at $z\approx 2$
• AGN Selection Methods Have Profound Impacts on the Distributions of Host Galaxy Properties
• Selection of massive evolved galaxies at $3\le z\le 4.5$ in the CANDELS fields
• The Stellar Mass Function in CANDELS and Frontier Fields: the build-up of low mass passive galaxies since z~3
• Fraction of Clumpy Star-Forming Galaxies at $0.5\le z\le 3$ in UVCANDELS: Dependence on Stellar Mass and Environment
• Reconstructing the Assembly of Massive Galaxies. II. Galaxies Develop Massive and Dense Stellar Cores as They Evolve and Head Toward Quiescence at Cosmic Noon

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• No evidence for a significant evolution of $M_{\bullet }$-$M_{\ast }$ relation in massive galaxies up to z$\sim$4
• Spatially resolved emission lines in galaxies at $4\le z<10$ from the JADES survey: evidence for enhanced central star formation
• JADES: Rest-frame UV-to-NIR Size Evolution of Massive Quiescent Galaxies from Redshift z=5 to z=0.5
• When relics were made: vigorous stellar rotation and low dark matter content in the massive ultra-compact galaxy GS-9209 at z=4.66
• The Importance of Dust Distribution in Ionizing-photon Escape: NIRCam and MIRI Imaging of a Lyman Continuum-emitting Galaxy at z ~ 3.8
• Extreme Neutral Outflow in a non-AGN Quiescent Galaxy at z~1.3
• spike: A tool to drizzle HST, JWST, and Roman PSFs for improved analyses
• The JWST Emission Line Survey (JELS): The sizes and merger fraction of star-forming galaxies during the Epoch of Reionization
• Cloudy with a chance of starshine: Possible photometric signatures of nebular-dominated emission in $1.5<z<8.5$ JADES galaxies
• A Bending in the Size-mass Relation of Star-forming Galaxies across $0.5<z<6.0$ at a Critical Stellar Mass of $10^{10}{M}_{\odot }$ Revealed by JWST
• ULTIMATE-deblending I. A 50-band Ultraviolet to Mid-infrared Photometric Catalog Combining Space- and Ground-based Data in the JWST/PRIMER survey