All Outputs (56)

New insights into the role of AGNs in forming the cluster red sequence (2024)
Journal Article

As a considerable investment of time from various telescope facilities was dedicated toward studying the Spiderweb protocluster at z = 2.2, it so far remains one of the most extensively studied protocluster. We report here the latest results in this... Read More about New insights into the role of AGNs in forming the cluster red sequence.

Spitzer-selected z > 1.3 protocluster candidates in the LSST deep-drilling fields (2023)
Journal Article

We have identified 189 candidate z > 1.3 protoclusters and clusters in the LSST Deep Drilling Fields. This sample will enable the measurement of the metal enrichment and star formation history of clusters during their early assembly period through th... Read More about Spitzer-selected z > 1.3 protocluster candidates in the LSST deep-drilling fields.

The stellar mass function of quiescent galaxies in 2 < z < 2.5 protoclusters (2023)
Journal Article

We present an analysis of the galaxy stellar mass function (SMF) of 14 known protoclusters between 2.0 < z < 2.5 in the COSMOS field, down to a mass limit of 10 9.5 M⊙. We use existing photometric redshifts with a statistical background subtraction,... Read More about The stellar mass function of quiescent galaxies in 2 < z < 2.5 protoclusters.

COALAS II. Extended molecular gas reservoirs are common in a distant, forming galaxy cluster (2023)
Journal Article

This paper presents the results of 475 hours of interferometric observations with the Australia Telescope Compact Array towards the Spiderweb protocluster at (z=2.16). We search for large, extended molecular gas reservoirs among 46 previously detecte... Read More about COALAS II. Extended molecular gas reservoirs are common in a distant, forming galaxy cluster.

Intracluster light in the core of z ∼ 2 galaxy proto-clusters (2023)
Journal Article

Intracluster light is thought to originate from stars that were ripped away from their parent galaxies by gravitational tides and galaxy interactions during the build up of the cluster. The stars from such interactions will accumulate over time, so s... Read More about Intracluster light in the core of z ∼ 2 galaxy proto-clusters.

A cosmic stream of atomic carbon gas connected to a massive radio galaxy at redshift 3.8 (2023)
Journal Article

The growth of galaxies in the early Universe is driven by accretion of circum- and intergalactic gas. Simulations have predicted that steady streams of cold gas penetrate the dark matter halos of galaxies and provide the raw material necessary to sus... Read More about A cosmic stream of atomic carbon gas connected to a massive radio galaxy at redshift 3.8.

Probing quasar lifetimes with proximate 21-centimetre absorption in the diffuse intergalactic medium at redshifts z ≥ 6 (2022)
Journal Article

Enhanced ionizing radiation in close proximity to redshift z ≳ 6 quasars creates short windows of intergalactic Ly α transmission blueward of the quasar Ly α emission lines. The majority of these Ly α near-zones are consistent with quasars that have... Read More about Probing quasar lifetimes with proximate 21-centimetre absorption in the diffuse intergalactic medium at redshifts z ≥ 6.

Morphology-density Relation, Quenching, and Mergers in CARLA Clusters and Proto-Clusters at 1.4 < z < 2.8 (2022)
Working Paper

Signs of environmental effects on star-forming galaxies in the Spiderweb protocluster at z = 2.16 (2022)
Journal Article

We use multi-object near-infrared spectroscopy with VLT/KMOS to investigate the role of the environment in the evolution of the ionized gas properties of narrow-band-selected H α emitters (HAEs) in the Spiderweb protocluster at z = 2.16. Based on res... Read More about Signs of environmental effects on star-forming galaxies in the Spiderweb protocluster at z = 2.16.

Satellite quenching was not important for z ∼1 clusters: Most quenching occurred during infall (2021)
Journal Article

We quantify the relative importance of environmental quenching versus pre-processing in z ∼1 clusters by analysing the infalling galaxy population in the outskirts of 15 galaxy clusters at 0.8 < z < 1.4 drawn from the GOGREEN and GCLASS surveys. We f... Read More about Satellite quenching was not important for z ∼1 clusters: Most quenching occurred during infall.

COALAS: I. ATCA CO(1-0) survey and luminosity function in the Spiderweb protocluster at z = 2.16 (2021)
Journal Article

We report a detailed CO(1-0) survey of a galaxy protocluster field at z = 2.16, based on 475 h of observations with the Australia Telescope Compact Array. We constructed a large mosaic of 13 individual pointings, covering an area of 21 arcmin2 and ±6... Read More about COALAS: I. ATCA CO(1-0) survey and luminosity function in the Spiderweb protocluster at z = 2.16.

Searching for the shadows of giants II: the effect of local ionisation on the Lyman-alpha absorption signatures of protoclusters at redshift z=2.4 (2021)
Journal Article

Local variations in the intergalactic medium (IGM) neutral hydrogen fraction will affect the Ly α absorption signature of protoclusters identified in tomographic surveys. Using the IllustrisTNG simulations, we investigate how the AGN proximity effect... Read More about Searching for the shadows of giants II: the effect of local ionisation on the Lyman-alpha absorption signatures of protoclusters at redshift z=2.4.

Clusters’ far-reaching influence on narrow-angle tail radio galaxies (2021)
Journal Article

In order to study the ram-pressure interaction between radio galaxies and the intracluster medium, we analyse a sample of 208 highly bent narrow-angle tail radio sources (NATs) in clusters, detected by the Low-Frequency Array Two-metre Sky Survey. Fo... Read More about Clusters’ far-reaching influence on narrow-angle tail radio galaxies.

The detectability of strong 21-cm forest absorbers from the diffuse intergalactic medium in late reionization models (2021)
Journal Article

A late end to reionization at redshift z ≈ 5.3 is consistent with observed spatial variations in the Ly α forest transmission and the deficit of Ly α emitting galaxies around extended Ly α absorption troughs at z = 5.5. In this model, large islands o... Read More about The detectability of strong 21-cm forest absorbers from the diffuse intergalactic medium in late reionization models.

The detectability of strong 21-cm forest absorbers from the diffuse intergalactic medium in late reionization models (2021)
Journal Article

A late end to reionization at redshift z 5.3 is consistent with observed spatial variations in the Ly α forest transmission and the deficit of Ly α emitting galaxies around extended Ly α absorption troughs at z = 5.5. In this model, large islands of... Read More about The detectability of strong 21-cm forest absorbers from the diffuse intergalactic medium in late reionization models.

The black hole masses of extremely luminous radio-WISE selected galaxies (2021)
Journal Article

Massive molecular gas reservoir around the central AGN in the CARLA J1103 + 3449 cluster at z = 1.44 (2020)
Journal Article

Passive early-type galaxies dominate cluster cores at z ≲ 1.5. At higher redshift, cluster core galaxies are observed to have on-going star-formation, which is fueled by cold molecular gas. We measured the molecular gas reservoir of the central regio... Read More about Massive molecular gas reservoir around the central AGN in the CARLA J1103 + 3449 cluster at z = 1.44.

VizieR Online Data Catalog: CARLA J1103+3449 cluster datacube (Markov+, 2020) (2020)
Dataset

Passive early-type galaxies dominate cluster cores at z~60%) the central total molecular gas reservoir. These results can be explained by massive cool gas flows in the center of the cluster. The AGN early-type host is not yet quenched; its star forma... Read More about VizieR Online Data Catalog: CARLA J1103+3449 cluster datacube (Markov+, 2020).

The clustering of X-ray AGN at 0.5 &lt; z &lt; 4.5: host galaxies dictate dark matter halo mass (2020)
Journal Article

We analyse 870 μm Atacama Large Millimetre Array (ALMA) dust continuum detections of 41 canonically selected z ≃ 3 Lyman-break galaxies (LBGs), as well as 209 ALMA-undetected LBGs, in follow-up of SCUBA-2 mapping of the UKIDSS Ultra Deep Survey (UDS)... Read More about The clustering of X-ray AGN at 0.5 &lt; z &lt; 4.5: host galaxies dictate dark matter halo mass.

Galaxy cluster illuminates the cosmic dark ages (2020)
Journal Article