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View article: Enhanced active galactic nucleus activity in overdense galactic environments at 2 < <i>z</i> < 4
Enhanced active galactic nucleus activity in overdense galactic environments at 2 < <i>z</i> < 4 Open
We carried out a study on the relationship between galaxy environments and their active galactic nucleus (AGN) activity at high redshifts (2.0 < z < 4.0). Specifically, we studied the AGN fraction in galaxies residing in a range of environ…
View article: A 13 Billion Year View of Galaxy Growth: Metallicity Gradient Evolution from the Local Universe to <i>z</i> = 9 with JWST and Archival Surveys
A 13 Billion Year View of Galaxy Growth: Metallicity Gradient Evolution from the Local Universe to <i>z</i> = 9 with JWST and Archival Surveys Open
Galaxy gas-phase metallicity gradients have been extensively studied over the past four decades, both in the local and in the high-redshift Universe, as they trace the baryon cycle and growth of galaxies. With the unprecedented spatial res…
View article: Quantifying the Impact of Incompleteness on Identifying and Interpreting Galaxy Protocluster Populations with the TNG-Cluster Simulation
Quantifying the Impact of Incompleteness on Identifying and Interpreting Galaxy Protocluster Populations with the TNG-Cluster Simulation Open
We use the TNG-Cluster simulation to investigate how stellar mass and star formation rate (SFR) incompleteness affect the identification of density peaks within galaxy protoclusters at different redshifts. Our analysis focuses on a sample …
View article: A 13-Billion-Year View of Galaxy Growth: Metallicity Gradient Evolution from the Local Universe to $z=9$ with JWST and Archival Surveys
A 13-Billion-Year View of Galaxy Growth: Metallicity Gradient Evolution from the Local Universe to $z=9$ with JWST and Archival Surveys Open
The galaxy gas-phase metallicity gradients have been extensively studied over the past four decades, both in the local and high-redshift universe, as they trace the baryon cycle and growth of galaxies. With the unprecedented spatial resolu…
View article: The HST-Hyperion Survey: Grism Observations of a <i>z</i> ∼ 2.5 Protosupercluster
The HST-Hyperion Survey: Grism Observations of a <i>z</i> ∼ 2.5 Protosupercluster Open
We present the first results and catalogs from the HST-Hyperion survey. This survey has collected 50 orbits of WFC3/F160W imaging and WFC3/G141 grism spectroscopy in the most overdense regions of the Hyperion protosupercluster at z ∼ 2.45,…
View article: Gas properties as a function of environment in the proto-supercluster Hyperion at <i>z</i> ∼ 2.45
Gas properties as a function of environment in the proto-supercluster Hyperion at <i>z</i> ∼ 2.45 Open
The cosmic star formation rate density, molecular gas density, and active galactic nucleus (AGN) activity of the Universe peak at z ∼2–3, demonstrating the Universe is most active at this epoch. The nature of the galaxies at these redshift…
View article: HST Grism Observations of a <i>z</i> ∼ 1.8 Cluster Candidate from the Clusters Occupied by Bent Radio AGN (COBRA) Survey
HST Grism Observations of a <i>z</i> ∼ 1.8 Cluster Candidate from the Clusters Occupied by Bent Radio AGN (COBRA) Survey Open
We present new Hubble Space Telescope/Wide Field Camera 3 G141 grism observations for COBRA 1411+3415, originally identified as a high-redshift cluster candidate in the Clusters Occupied by Bent Radio AGN (COBRA) survey using radio, infrar…
View article: Quantifying the Impact of Incompleteness on Identifying and Interpreting Galaxy Protocluster Populations with the TNG-Cluster Simulation
Quantifying the Impact of Incompleteness on Identifying and Interpreting Galaxy Protocluster Populations with the TNG-Cluster Simulation Open
We use the TNG-Cluster simulation to investigate how stellar mass and star formation rate (SFR) incompleteness affect the identification of density peaks within galaxy protoclusters at different redshifts. Our analysis focuses on a sample …
View article: Discovering Large-scale Structure at 2 < z < 5 in the C3VO Survey
Discovering Large-scale Structure at 2 < z < 5 in the C3VO Survey Open
The Charting Cluster Construction with VUDS and ORELSE (C3VO) survey is an ongoing imaging and spectroscopic campaign aiming to map out the growth of structure up to z ∼ 5 and was born from the combination of the Visible Multi-Object Spect…
View article: Discovering Large-Scale Structure at $2
Discovering Large-Scale Structure at $2 Open
The Charting Cluster Construction with VUDS and ORELSE (C3VO) survey is an ongoing imaging and spectroscopic campaign aiming to map out the growth of structure up to $z\sim5$ and was born from the combination of the Visible Multi-Object Sp…
View article: Enhanced AGN Activity in Overdense Galactic Environments at $2 < z < 4$
Enhanced AGN Activity in Overdense Galactic Environments at $2 < z < 4$ Open
We conduct a study on the relationship between galaxy environments and their active galactic nuclei (AGN) activity at high redshifts ($2.010^{12.8}M_\odot$) overdense ($σ_δ>5.0$) peak, normalized with respect to the size of the peak. These…
View article: Environmental Effects on the Stellar Mass Function in a z ∼ 3.3 Overdensity of Galaxies in the COSMOS Field*
Environmental Effects on the Stellar Mass Function in a z ∼ 3.3 Overdensity of Galaxies in the COSMOS Field* Open
We present an analysis of the number density of galaxies as a function of stellar mass (i.e., the stellar mass function (SMF)) in the COSMOS field at z ∼ 3.3, making a comparison between the SMF in overdense environments and the SMF in the…
View article: Environmental Effects on the Stellar Mass Function in a z~3.3 Overdensity of Galaxies in the COSMOS Field
Environmental Effects on the Stellar Mass Function in a z~3.3 Overdensity of Galaxies in the COSMOS Field Open
We present an analysis of the number density of galaxies as a function of stellar mass (i.e., the stellar mass function, SMF) in the COSMOS field at z~3.3, making a comparison between the SMF in overdense environments and the SMF in the co…
View article: Identification and characterization of six spectroscopically confirmed massive protostructures at 2.5 &lt; <i>z</i> &lt; 4.5
Identification and characterization of six spectroscopically confirmed massive protostructures at 2.5 < <i>z</i> < 4.5 Open
We present six spectroscopically confirmed massive protostructures, spanning a redshift range of 2.5 < z < 4.5 in the Extended Chandra Deep Field South (ECDFS) field discovered as part of the Charting Cluster Construction in VUDS and…
View article: Identification and Characterization of Six Spectroscopically Confirmed Massive Protostructures at $2.5
Identification and Characterization of Six Spectroscopically Confirmed Massive Protostructures at $2.5 Open
We present six spectroscopically confirmed massive protostructures, spanning a redshift range of $2.59000$\thinspace cMpc$^3$) of more than $2.5σ_δ$ above the field density levels at these redshifts, have a total mass $M_{tot}\ge10^{14.8}M…
View article: Searching for C ii Emission from the First Sample of z ∼ 6 O i Absorption-associated Galaxies with the Atacama Large Millimeter/submillimeter Array
Searching for C ii Emission from the First Sample of z ∼ 6 O i Absorption-associated Galaxies with the Atacama Large Millimeter/submillimeter Array Open
We report the first statistical analyses of [C ii ] and dust continuum observations in six strong O i absorber fields at the end of the reionization epoch obtained by the Atacama Large Millimeter/submillimeter Array (ALMA). Combined with o…
View article: The High-redshift Clusters Occupied by Bent Radio AGN (COBRA) Survey: Investigating the Role of Environment on Bent Radio AGNs Using LOFAR
The High-redshift Clusters Occupied by Bent Radio AGN (COBRA) Survey: Investigating the Role of Environment on Bent Radio AGNs Using LOFAR Open
Bent radio active galactic nucleus (AGN) morphology depends on the density of the surrounding gas. However, bent sources are found inside and outside clusters, raising the question of how environment impacts bent AGN morphology. We analyze…
View article: The Mass–Metallicity Relation of Dwarf Galaxies at Cosmic Noon from JWST Observations
The Mass–Metallicity Relation of Dwarf Galaxies at Cosmic Noon from JWST Observations Open
We present a study of the mass–metallicity relation (MZR) of 51 dwarf galaxies ( M ⋆ ≈ 10 6.5 –10 9.5 M ⊙ ) at z = 2–3 from the A2744 and SMACS J0723-3732 galaxy cluster fields. These dwarf galaxies are identified and confirmed by deep JWS…
View article: The High-Redshift Clusters Occupied by Bent Radio AGN (COBRA) Survey: Investigating the Role of Environment on Bent Radio AGNs using LOFAR
The High-Redshift Clusters Occupied by Bent Radio AGN (COBRA) Survey: Investigating the Role of Environment on Bent Radio AGNs using LOFAR Open
Bent radio AGN morphology depends on the density of the surrounding gas. However, bent sources are found inside and outside clusters, raising the question of how environment impacts bent AGN morphology. We analyze new LOw-Frequency Array T…
View article: Inspiraling streams of enriched gas observed around a massive galaxy 11 billion years ago
Inspiraling streams of enriched gas observed around a massive galaxy 11 billion years ago Open
Stars form in galaxies, from gas that has been accreted from the intergalactic medium. Simulations have shown that recycling of gas—the reaccretion of gas that was previously ejected from a galaxy—could sustain star formation in the early …
View article: The Mass-Metallicity Relation of Dwarf Galaxies at Cosmic Noon from JWST Observations
The Mass-Metallicity Relation of Dwarf Galaxies at Cosmic Noon from JWST Observations Open
We present a study of the mass-metallicity relation (MZR) of 51 dwarf galaxies ($M_\star\approx 10^{6.5} - 10^{9.5}~M_\odot$) at $z = 2-3$ from the Abell 2744 and SMACS J0723-3732 galaxy cluster fields. These dwarf galaxies are identified …
View article: Where the Wild Things Are: Galaxy Evolution and Radio Source Properties in the High-z COBRA Survey
Where the Wild Things Are: Galaxy Evolution and Radio Source Properties in the High-z COBRA Survey Open
Building a map of galaxy cluster evolution requires clusters spanning a range of redshifts, masses, and dynamical and evolutionary states. One way to build this sample is with radio AGNs, which have long been used to trace clusters at high…
View article: The High-redshift Clusters Occupied by Bent Radio AGN (COBRA) Survey: Radio Source Properties
The High-redshift Clusters Occupied by Bent Radio AGN (COBRA) Survey: Radio Source Properties Open
The shape of bent, double-lobed radio sources requires a dense gaseous medium. Bent sources can therefore be used to identify galaxy clusters and characterize their evolutionary history. By combining radio observations from the Very Large …
View article: Extended Radio AGN at z ∼ 1 in the ORELSE Survey: The Confining Effect of Dense Environments
Extended Radio AGN at z ∼ 1 in the ORELSE Survey: The Confining Effect of Dense Environments Open
Recent hydrodynamic simulations and observations of radio jets have shown that the surrounding environment has a large effect on their resulting morphology. To investigate this, we use a sample of 50 Extended Radio Active Galactic Nuclei (…
View article: The High-redshift Clusters Occupied by Bent Radio AGN (COBRA) Survey: Follow-up Optical Imaging
The High-redshift Clusters Occupied by Bent Radio AGN (COBRA) Survey: Follow-up Optical Imaging Open
Here we present new red sequence overdensity measurements for 77 fields in the high- z Clusters Occupied by Bent Radio AGN (COBRA) survey, based on r - and i -band imaging taken with the Lowell Observatory’s Discovery Channel Telescope. We…
View article: The High-redshift Clusters Occupied by Bent Radio AGN (COBRA) Survey: The Spitzer Catalog
The High-redshift Clusters Occupied by Bent Radio AGN (COBRA) Survey: The Spitzer Catalog Open
We present 190 galaxy cluster candidates (most at high redshift) based on galaxy overdensity measurements in the Spitzer /IRAC imaging of the fields surrounding 646 bent, double-lobed radio sources drawn from the Clusters Occupied by Bent …
View article: The High-Z Clusters Occupied By Bent Radio Agn (Cobra) Survey
The High-Z Clusters Occupied By Bent Radio Agn (Cobra) Survey Open
To probe the earliest eras of cluster formation, we need to find clusters with a variety of morphological states and masses across redshift space. Here, we present results from the Clusters Occupied by Bent Radio AGN (COBRA) Survey. The CO…
View article: The High-Redshift Clusters Occupied by Bent Radio AGN (COBRA) Survey
The High-Redshift Clusters Occupied by Bent Radio AGN (COBRA) Survey Open
We present 238 high-redshift galaxy cluster candidates based on galaxy overdensities in the Spitzer/IRAC imaging of the fields surrounding 646 bent, double-lobed radio sources drawn from the Clusters Occupied by Bent Radio AGN (COBRA) Surv…
View article: The High-Redshift Clusters Occupied by Bent Radio AGN (COBRA) Survey
The High-Redshift Clusters Occupied by Bent Radio AGN (COBRA) Survey Open
The number of confirmed, high-redshift galaxy clusters is very low compared to the number of well-studied clusters nearby. Bent, double-lobed radio sources are frequently found in galaxy clusters, and thus can be used as tracers for effici…