All Outputs (56)

The impact of protocluster environments at z = 1.6 (2016)
Journal Article

We investigate the effects of dense environments on galaxy evolution by examining how the properties of galaxies in the z = 1.6 protocluster Cl 0218.3−0510 depend on their location. We determine galaxy properties using spectral energy distribution fi... Read More about The impact of protocluster environments at z = 1.6.

ALMA finds dew drops in the dusty spider’s web (2016)
Journal Article

We present 0.̋5 resolution ALMA detections of the observed 246 GHz continuum, [CI] 3P2→3P1 fine structure line ([CI]2–1), CO(7–6), and H2O lines in the z = 2.161 radio galaxy MRC1138-262, the so-called Spiderweb galaxy. We detect strong [CI]2–1 emiss... Read More about ALMA finds dew drops in the dusty spider’s web.

HST imaging of the dusty filaments and nucleus swirl in NGC4696 at the centre of the Centaurus Cluster (2016)
Journal Article

Narrow-band HST imaging has resolved the detailed internal structure of the 10 kpc diameter H ?+[N II] emission line nebulosity in NGC4696, the central galaxy in the nearby Centaurus cluster, showing that the dusty, molecular, filaments have a width... Read More about HST imaging of the dusty filaments and nucleus swirl in NGC4696 at the centre of the Centaurus Cluster.

The structure and evolution of a forming galaxy cluster at z = 1.62 (2016)
Journal Article

We present a comprehensive picture of the Cl0218.3-0510 protocluster at $z=1.623$ across 10 co-moving Mpc. Using filters that tightly bracket the Balmer and 4000 Angstrom breaks of the protocluster galaxies we obtain precise photometric redshifts res... Read More about The structure and evolution of a forming galaxy cluster at z = 1.62.

A mature galaxy cluster at z= 1.58 around the radio galaxy 7C 1753+6311 (2016)
Journal Article

We report on the discovery of a z = 1.58 mature cluster around the high-redshift radio galaxy 7C 1753+6311, first identified in the Clusters Around Radio-loud active galactic nuclei survey. Two-thirds of the excess galaxies within the central 1 Mpc l... Read More about A mature galaxy cluster at z= 1.58 around the radio galaxy 7C 1753+6311.

Semi-analytic model predictions of the galaxy population in protoclusters (2015)
Journal Article

What are protoclusters? – Defining high-redshift galaxy clusters and protoclusters (2015)
Journal Article

We explore the structures of protoclusters and their relationship with high-redshift clusters using the Millennium Simulation combined with a semi-analytic model. We find that protoclusters are very extended, with 90 per cent of their mass spread acr... Read More about What are protoclusters? – Defining high-redshift galaxy clusters and protoclusters.

The formation history of massive cluster galaxies as revealed by CARLA (2015)
Journal Article

© 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. We use a sample of 37 of the densest clusters and protoclusters across 1.3 ≤ z ≤ 3.2 from the Clusters Around Radio-Loud AGN (CARLA) survey to study... Read More about The formation history of massive cluster galaxies as revealed by CARLA.

An excess of dusty starbursts related to the Spiderweb galaxy (2014)
Journal Article

We present APEX LABOCA 870 μm observations of the field around the high-redshift radio galaxy MRC1138−262 at z = 2.16. We detect 16 submillimeter galaxies (SMGs) in this ~140 arcmin2 bolometer map with flux densities in the range 3–11 mJy. The raw nu... Read More about An excess of dusty starbursts related to the Spiderweb galaxy.

Why z > 1 radio-loud galaxies are commonly located in protoclusters (2014)
Journal Article

Distant powerful radio-loud active galactic nuclei (RLAGN) tend to reside in dense environments and are commonly found in protoclusters at z > 1.3. We examine whether this occurs because RLAGN are hosted by massive galaxies, which preferentially resi... Read More about Why z > 1 radio-loud galaxies are commonly located in protoclusters.

A trio of gamma-ray burst supernovae: GRB 120729A, GRB 130215A/SN 2013ez, and GRB 130831A/SN 2013fu (2014)
Journal Article

Rapidly growing black holes and host galaxies in the distant universe from the Herschel Radio Galaxy Evolution Project (2014)
Journal Article

We present results from a comprehensive survey of 70 radio galaxies at redshifts 1 2.5 are higher than the sSFR of typical star forming galaxies over the same redshift range, but are similar or perhaps lower than the galaxy population for radio gala... Read More about Rapidly growing black holes and host galaxies in the distant universe from the Herschel Radio Galaxy Evolution Project.

A z = 2.5 protocluster associated with the radio galaxy MRC 2104-242: star formation and differing mass functions in dense environments (2014)
Journal Article

We present results from a narrow-band survey of the field around the high-redshift radio galaxy MRC 2104−242. We have selected Hα emitters in a 7 arcmin2 field and compared the measured number density with that of a field sample at similar redshift.... Read More about A z = 2.5 protocluster associated with the radio galaxy MRC 2104-242: star formation and differing mass functions in dense environments.

The galaxy cluster mid-infrared luminosity function at 1.3 < z (2014)
Journal Article

We present 4.5 μm luminosity functions for galaxies identified in 178 candidate galaxy clusters at 1.3 1.3. The luminosity functions are derived for different redshift and richness bins, and the IRAC imaging reaches depths of m∗ + 2, allowing us to... Read More about The galaxy cluster mid-infrared luminosity function at 1.3 < z.

Searching for large-scale structures around high-redshift radio galaxies with Herschel (2013)
Journal Article

This paper presents the first results of a far-infrared search for protocluster-associated galaxy overdensities using the Spectral and Photometric Imaging REciever (SPIRE) instrument on-board the Herschel Space Observatory. Large (∼400 arcmin2) field... Read More about Searching for large-scale structures around high-redshift radio galaxies with Herschel.

Ionized gas in cluster cores (2007)
Book Chapter