A Radio-to-millimeter Census of Star-forming Galaxies in Protocluster 4C~23.56 at z = 2.5 : Global and local gas kinematics

Abstract

We present a study of the gas kinematics of star-forming galaxies associated with protocluster 4C 23.56 at $z=2.49$ using $0^{\prime \prime }.4$ resolution CO (4-3) data taken with ALMA. Eleven H$\alpha$ emitters (HAEs) are detected in CO (4-3), including six HAEs that were previously detected in CO (3-2) at a coarser angular resolution. The detections in both CO lines are broadly consistent in the line widths and the redshifts, confirming both detections. With an increase in the number of spectroscopic redshifts, we confirm that the protocluster is composed of two merging groups with a total halo mass of $\log (M_{\mathrm{cl}}/M_{\odot })=13.4-13.6$, suggesting that the protocluster would evolve into a Virgo-like cluster ($>10^{14}{M}_{\odot }$). We compare the CO line widths and the CO luminosities with galaxies in other (proto)clusters ($n_{\mathrm{gal}}=91$) and general fields ($n_{\mathrm{gal}}=80$) from other studies. The 4C23.56 protocluster galaxies have CO line widths and luminosities comparable to other protocluster galaxies on average. On the other hand, the CO line widths are on average broader by $\approx 50\%$ compared to field galaxies, while the median CO luminosities are similar. The broader line widths can be attributed to both effects of unresolved gas-rich mergers and/or compact gas distribution, which is supported by our limited but decent angular resolution observations and the size estimate of three galaxies. Based on these results, we argue that gas-rich mergers may play a role in the retention of the specific angular momentum to a value similar to that of field populations during cluster assembly, though we need to verify this with a larger number of samples.

arXiv comment27 pages, 10 figures, 4 tables, ApJ in press

References in corpus (149)

• Astropy: A Community Python Package for Astronomy
• Simulating the joint evolution of quasars, galaxies and their large-scale distribution
• Star Formation in AEGIS Field Galaxies since z=1.1 : The Dominance of Gradually Declining Star Formation, and the Main Sequence of Star-Forming Galaxies
• Multiwavelength study of massive galaxies at z~2. I. Star formation and galaxy growth
• 3D-HST+CANDELS: The Evolution of the Galaxy Size-Mass Distribution since $z=3$
• The SINS survey: SINFONI Integral Field Spectroscopy of z ~ 2 Star-forming Galaxies
• The formation history of elliptical galaxies
• PHIBSS: molecular gas content and scaling relations in z~1-3 normal star forming galaxies
• Very High Gas Fractions and Extended Gas Reservoirs in z=1.5 Disk Galaxies
• Passively Evolving Early-type Galaxies at 1.4<z<2.5 in the Hubble Ultra Deep Field
• Morphological quenching of star formation: making early-type galaxies red
• The SAURON project -- IX. A kinematic classification for early-type galaxies
• Confirmation of the remarkable compactness of massive quiescent galaxies at z~2.3: early-type galaxies did not form in a simple monolithic collapse
• Galaxy Structure and Mode of Star Formation in the SFR-Mass Plane from z ~ 2.5 to z ~ 0.1
• PHIBSS: Unified Scaling Relations of Gas Depletion Time and Molecular Gas Fractions
• 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
• The KMOS^3D Survey: design, first results, and the evolution of galaxy kinematics from 0.7<z<2.7
• The SAURON project -- X. The orbital anisotropy of elliptical and lenticular galaxies: revisiting the (V/sigma,epsilon) diagram with integral-field stellar kinematics
• The Evolution of Early-Type Galaxies in Distant Clusters
• The Evolving Interstellar Medium of Star Forming Galaxies Since z=2 as Probed by Their Infrared Spectral Energy Distributions
• 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
• The size evolution of galaxies since z~3: combining SDSS, GEMS and FIRES
• Structure and Kinematics of Early-Type Galaxies from Integral-Field Spectroscopy
• SINFONI Integral Field Spectroscopy of z~2 UV-selected Galaxies: Rotation Curves and Dynamical Evolution
• The rapid formation a large rotating disk galaxy three billion years after the Big Bang
• The Atlas3D project - VII. A new look at the morphology of nearby galaxies: the kinematic morphology-density relation
• Virial Scaling of Massive Dark Matter Halos: Why Clusters Prefer a High Normalization Cosmology
• The Kiloparsec-Scale Kinematics of High-Redshift Star-Forming Galaxies
• Regularity underlying complexity: a redshift-independent description of the continuous variation of galaxy-scale molecular gas properties in the mass-star formation rate plane
• Ancient Light from Young Cosmic Cities: Physical and Observational Signatures of Galaxy Proto-Clusters
• Evolution of Interstellar Medium, Star Formation, and Accretion at High Redshift
• Forming Compact Massive Galaxies
• The SINS survey: modeling the dynamics of z~2 galaxies and the high-z Tully-Fisher relation
• Strongly baryon-dominated disk galaxies at the peak of galaxy formation ten billion years ago
• High-redshift clumpy discs and bulges in cosmological simulations
• CO excitation of normal star forming galaxies out to z=1.5 as regulated by the properties of their interstellar medium
• The Evolution of ISM Mass Probed by Dust Emission -- ALMA Observations at z = 0.3 to 2
• Angular momentum and galaxy formation revisited
• A Spitzer-Selected Galaxy Cluster at z=1.62
• Clusters of Galaxies in the First Half of the Universe from the IRAC Shallow Survey
• Kinemetry of SINS High-Redshift Star-Forming Galaxies: Distinguishing Rotating Disks from Major Mergers
• Validation of the equilibrium model for galaxy evolution to z~3 through molecular gas and dust observations of lensed star-forming galaxies
• A Morphological Catalog of Galaxies in the Hubble Deep Field
• Connecting Angular Momentum and Galactic Dynamics: The complex Interplay between Spin, Mass, and Morphology
• Stellar Populations in Ten Clump-Cluster Galaxies of the Ultra Deep Field
• The relation between velocity dispersion and mass in simulated clusters of galaxies: dependence on the tracer and the baryonic physics
• The SINS/zC-SINF survey of z~2 galaxy kinematics: SINFONI adaptive optics-assisted data and kiloparsec-scale emission line properties
• The Majority of Compact Massive Galaxies at z~2 are Disk Dominated
• The molecular gas in Luminous Infrared Galaxies I: CO lines, extreme physical conditions, and their drivers
• Galaxy Protoclusters as Drivers of Cosmic Star-Formation History in the First 2 Gyr
• The KMOS Redshift One Spectroscopic Survey (KROSS): Dynamical properties, gas and dark matter fractions of typical z~1 star-forming galaxies
• A massive core for a cluster of galaxies at a redshift of 4.3
• Galactic Angular Momentum in the Illustris Simulation: Feedback and the Hubble Sequence
• What are Protoclusters? -- Defining High Redshift Galaxy Clusters and Protoclusters
• NICMOS Imaging of DRGs in the HDF-S: A Relation Between Star-Formation and Size at z ~ 2.5
• Evidence for strong dynamical evolution in disk galaxies through the last 11 Gyr. GHASP VIII: A local reference sample of rotating disk galaxies for high redshift studies
• Resolved Spectroscopy of Gravitationally-Lensed Galaxies: Recovering Coherent Velocity Fields in Sub-Luminous z~2-3 Galaxies
• Herschel-ATLAS: a binary HyLIRG pinpointing a cluster of starbursting proto-ellipticals
• Short-lived star-forming giant clumps in cosmological simulations of z~2 disks
• GHASP : An Halpha kinematic survey of spiral and irregular galaxies - VI. New Halpha data cubes for 108 galaxies
• MASSIV: Mass Assembly Survey with SINFONI in VVDS - II. Kinematics and close environment classification
• Dynamical properties of AMAZE and LSD galaxies from gas kinematics and the Tully-Fisher relation at z~3
• Halpha-Derived Star-Formation Rates For Three z ~ 0.75 EDisCS Galaxy Clusters
• Low, Milky-Way like, Molecular Gas Excitation of Massive Disk Galaxies at z~1.5
• Quantifying the impact of mergers on the angular momentum of simulated galaxies
• The angular momentum distribution and baryon content of star forming galaxies at z~1-3
• Effect of environment on galaxies mass-size distribution: unveiling the transition from outside-in to inside-out evolution
• Fundamental Mass-Spin-Morphology Relation of Spiral Galaxies
• DYNAMO I: A Sample of Ha-Luminous Galaxies with Resolved Kinematics
• IMAGES-III: The evolution of the Near-Infrared Tully-Fisher relation over the last 6 Gyr
• Galaxy evolution in overdense environments at high redshift: passive early-type galaxies in a cluster at redshift 2
• The Star Formation Epoch of the Most Massive Early-Type Galaxies
• Optical Spectroscopy and Velocity Dispersions of Galaxy Clusters from the SPT-SZ Survey
• GalPak3D: A Bayesian parametric tool for extracting morpho-kinematics of galaxies from 3D data
• Large scale galactic turbulence: can self-gravity drive the observed HI velocity dispersions?
• Discovery of Large Molecular Gas Reservoirs in Post-Starburst Galaxies
• Clusters at Half Hubble Time: Galaxy Structure and Colors in RXJ0152.7-1357 and MS1054-03
• Dynamics of Galactic Disks and Mergers at z~1.6: Spatially Resolved Spectroscopy with Keck Laser Guide Star Adaptive Optics
• Observations and modelling of a clumpy galaxy at z=1.6: Spectroscopic clues to the origin and evolution of chain galaxies
• Molecular gas and star formation in early-type galaxies
• The SINS/zC-SINF Survey of z~2 Galaxy Kinematics: The Nature of Dispersion Dominated Galaxies
• A massive, dead disk galaxy in the early Universe
• The KMOS Deep Survey (KDS) I: dynamical measurements of typical star-forming galaxies at z $\simeq$ 3.5
• The KMOS Redshift One Spectroscopic Survey (KROSS): the origin of disk turbulence in z~0.9 star-forming galaxies
• Falling outer rotation curves of star-forming galaxies at 0.6 < z < 2.6 probed with KMOS^3D and SINS/ZC-SINF
• The evolution of the Tully-Fisher relation between z~2.3 and z~0.9 with KMOS^3D
• Gas Fraction and Depletion Time of Massive Star Forming Galaxies at z~3.2: No Change in Global Star Formation Process out to z>3
• GHASP : An Halpha kinematic survey of 203 spiral and irregular galaxies - VII. Revisiting the analysis of Halpha data cubes for 97 galaxies
• Molecular Gas in the Halo Fuels the Growth of a Massive Cluster Galaxy at High Redshift
• MOSFIRE Spectroscopy of Quiescent Galaxies at 1.5 < z < 2.5. I - Evolution of Structural and Dynamical Properties
• The MASSIVE Survey - VII. The Relationship of Angular Momentum, Stellar Mass and Environment of Early-Type Galaxies
• The KMOS Redshift One Spectroscopic Survey (KROSS): rotational velocities and angular momentum of z~0.9 galaxies
• The SAMI Galaxy Survey: mass as the driver of the kinematic morphology - density relation in clusters
• Resolving Quiescent Galaxies at $z\gtrsim 2$: II. Direct Measures of Rotational Support
• A Keck Survey of Gravitationally-Lensed Star-Forming Galaxies: High Spatial Resolution Studies of Kinematics and Metallicity Gradients
• ALMA Observations of Gas-Rich Galaxies in z~1.6 Galaxy Clusters: Evidence for Higher Gas Fractions in High-Density Environments
• Angular momentum evolution of galaxies over the past 10-Gyr: A MUSE and KMOS dynamical survey of 400 star-forming galaxies from z=0.3-1.7
• The SINFONI survey of powerful radio galaxies at z~2: Jet-driven AGN feedback during the Quasar Era
• Molecular gas reservoirs in cluster galaxies at z=1.46
• Rotating starburst cores in massive galaxies at z=2.5
• The implications of the surprising existence of a large, massive CO disk in a distant protocluster
• The SAMI Pilot Survey: The Kinematic Morphology-Density Relation in Abell 85, Abell 168 and Abell 2399
• Identification of the progenitors of rich clusters and member galaxies in rapid formation at z>2
• Distribution of Slow and Fast Rotators in the Fornax Cluster
• Morphologies and Color Gradients of Luminous Evolved Galaxies at z~1.5
• Discovery of an Excess of Halpha Emitters around 4C 23.56 at z=2.48
• Fast and slow rotators in the densest environments: a FLAMES/GIRAFFE IFS study of galaxies in Abell 1689 at z=0.183
• Ionized and molecular gas kinematics in a z=1.4 star-forming galaxy
• Molecular gas on large circumgalactic scales at z=3.47
• Cold molecular gas in massive disk galaxies at z=1.5
• Deep CO(1-0) Observations of z=1.62 Cluster Galaxies with Substantial Molecular Gas Reservoirs and Normal Star Formation Efficiencies
• Revealing environmental dependence of molecular gas content in a distant X-ray cluster at z=2.51
• Confirming Herschel candidate protoclusters from ALMA/VLA CO observations
• MASSIV: Mass Assembly Survey with SINFONI in VVDS. IV. Fundamental relations of star-forming galaxies at 1<z< 1.6
• Deep observations of CO line emission from star-forming galaxies in a cluster candidate at z=1.5
• ALMA view of a massive spheroid progenitor: a compact rotating core of molecular gas in an AGN host at z=2.226
• Environmental impacts on molecular gas in protocluster galaxies at z~2
• Kinematic Downsizing at z~2
• Spatially resolved kinematics in the central 1 kpc of a compact star-forming galaxy at z=2.3 from ALMA CO observations
• An enhanced merger fraction within the galaxy population of the SSA22 protocluster at z ~ 3.1
• Planck intermediate results. XXVI. Optical identification and redshifts of Planck clusters with the RTT150 telescope
• High Resolution Imaging of PHIBSS z~2 Main Sequence Galaxies in CO J=1-0
• A Study of CO Emission in High Redshift QSOs Using the Owens Valley Millimeter Array
• Fast and Slow Rotators in the Densest Environments: a SWIFT IFS study of the Coma Cluster
• Merger driven star-formation activity in Cl J1449+0856 at z=1.99 as seen by ALMA and JVLA
• Morphologies of Two Massive Old Galaxies at z ~ 2.5
• Resolving CO (2-1) in z~1.6 Gas-Rich Cluster Galaxies with ALMA: Rotating Molecular Gas Disks with Possible Signatures of Gas Stripping
• A radio-to-mm census of star-forming galaxies in protocluster 4C23.56 at z=2.5 : Gas mass and its fraction revealed with ALMA
• Angular Momenta, Dynamical Masses, and Mergers of Brightest Cluster Galaxies
• Evolutionary phases of gas-rich galaxies in a galaxy cluster at z=1.46
• Probing the kinematic morphology-density relation of early-type galaxies with MaNGA
• SINFONI/VLT 3D spectroscopy of massive galaxies: Evidence of rotational support at z~1.4
• First Results from the KMOS Lens-Amplified Spectroscopic Survey (KLASS): Kinematics of Lensed Galaxies at Cosmic Noon
• The dynamics of z=0.8 H-alpha-selected star-forming galaxies from KMOS/CF-HiZELS
• Galaxy Merger Candidates in High-Redshift Cluster Environments
• ALMA pin-points a strong over-density of U/LIRGs in the massive cluster XCS J2215 at z=1.46
• Galaxy Merger Fractions in Two Clusters at $z\sim 2$ Using the Hubble Space Telescope
• An extremely dense group of massive galaxies at the centre of the protocluster at z = 3.09 in the SSA22 field
• Similar Scaling Relations for the Gas Content of Galaxies across Environments to z ~ 3.5
• The relationship between dust and [CI] at z=1 and beyond
• KMOS LENsing Survey (KLENS) : morpho-kinematic analysis of star-forming galaxies at $z\sim 2$
• Evidence for a gas-rich major merger in a proto-cluster at z=2.5
• A dynamical mass estimator for high z galaxies based on spectroastrometry
• Morphological evolution in situ: Disk-dominated cluster red sequences at z ~ 1.25
• A gas-rich AGN near the centre of a galaxy cluster at z ~ 1.4
• A blind CO detection of a Distant Red Galaxy in the HS1700+64 proto-cluster
• Molecular gas in two companion cluster galaxies at z=1.2
• ZFIRE: 3D Modeling of Rotation, Dispersion, and Angular Momentum of Star-Forming Galaxies at z~2

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• Molecular gas properties of Planck-selected protocluster candidates at z~1.3-3
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• Revisited cold gas content with atomic carbon [C I] in z=2.5 protocluster galaxies
• PASSAGES: The Discovery of a Strongly Lensed Protocluster Core Candidate at Cosmic Noon
• All the Massive Galaxy Overdensities during Reionization: JWST Rest-Frame Optical Selection Reveals Young, Chemically Evolved Galaxies Embedded in Dense, Neutral Gas at z > 5
• Fueling and feedback mechanisms at the nodes of the cosmic web
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