activity
20232026
most citedThe JWST-PRIMAL Legacy Survey. A JWST/NIRSpec reference sample for the physical properties and Lyman- absorption and emission of galaxies at

100 citations · 316 across the 16 of their papers we have counts for

collaborators

17 papers

astro-ph.GA2026

EPOCHS-DR2 I: Expanded data release and properties of photometrically selected galaxies across NIRCam deep fields covering with the galfind software

Duncan Austin, Christopher J. Conselice, Thomas Harvey +14

We present the \epochstwo\ sample of star forming galaxies at produced using the \galfind\ photometric pipeline across $\sim650-740~\mathrm{arcmin}^2…

astro-ph.GA2026

Diverse Histories and Common Origins of Nitrogen-enhanced JWST Galaxies

Vadim Rusakov, Christopher J. Conselice, Thomas Harvey +2

Early JWST spectra revealed galaxies with a strong nitrogen excess challenging galactic chemical evolution models. Using public JWST surveys, we construct a sample of 76 N/O-enhanc…

astro-ph.GA2026

Environmental dependence of the Mass-Metallicity Star Formation Relations at z=4-10 with JWST

Qiong Li, Christopher J. Conselice, Lewi Westcott +8

We study how environment affects the mass-metallicity relation (MZR) at - using deep imaging and spectroscopy from the James Webb Space Telescope (JWST). Combining CEERS a…

astro-ph.GA2026

Inside the cocoon: a comprehensive explanation of the spectra of Little Red Dots

A. Sneppen, D. Watson, J. H. Matthews +10

JWST has revealed a population of compact galaxies in the early Universe with broad emission lines and strong Balmer breaks; among them the so-called ''little red dots'' (LRDs). Th…

astro-ph.GA2025

Resolving the ionizing photon budget crisis with JWST/NIRCam HII clumping constraints at z=6

Duncan Austin, Thomas Harvey, Christopher J. Conselice +18

We present a comprehensive study of the ionizing properties of 1721 galaxies at using deep JWST/NIRCam photometric imaging from the NEP, JADES, and PRIMER surveys spann…

astro-ph.GA2025★ 1 cited

Flexible Simulation Based Inference for Galaxy Photometric Fitting with Synthesizer

Thomas Harvey, Christopher C. Lovell, Sophie Newman +13

We introduce Synference, a new, flexible Python framework for galaxy SED fitting using simulation-based inference (SBI). Synference leverages the Synthesizer package for flexible f…

astro-ph.GA2025★ 6 cited

Evidence of violation of Case B recombination in Little Red Dots

G. P. Nikopoulos, D. Watson, A. Sneppen +4

Little Red Dots (LRDs) are a new class of compact extragalactic objects, with a v-shaped optical spectral energy distribution breaking close to the Balmer break wavelength, and bro…

astro-ph.GA2025

A dual AGN at z = 5.4 associated with a Lyman-alpha Nebula in the Center of a Cosmic Filament

Qiong Li, Christopher J. Conselice, Qiao Duan +9

Predictions from current theories and simulations suggest that dual AGN systems are exceedingly rare at high redshifts. The intense radiation and powerful outflows from AGNs regula…

astro-ph.GA2025★ 2 cited

Reionization in Protocluster Environments at with JWST/NIRSpec

Qiong Li, Christopher J. Conselice, Duncan Austin +4

Understanding the role of high-redshift protoclusters in cosmic reionization is essential to unveiling the early stages of structure formation. Using deep imaging and spectroscopy…

astro-ph.GA2025★ 10 cited

Behind the Spotlight: A systematic assessment of outshining using NIRCam medium-bands in the JADES Origins Field

Thomas Harvey, Christopher J. Conselice, Nathan J. Adams +9

The spatial resolution and sensitivity of JWST's NIRCam instrument has revolutionised our ability to probe the internal structure of early galaxies. By leveraging deep medium-band…

astro-ph.GA2025★ 3 cited

JWSTs PEARLS: NIRCam imaging and NIRISS spectroscopy of a star-forming galaxy lensed into a near-Einstein Ring by a massive elliptical galaxy

Nathan J. Adams, Giovanni Ferrami, Lewi Westcott +30

We present the discovery, and initial lensing analysis, of a high-redshift galaxy-galaxy lensing system within the JWST-PEARLS/HST-TREASUREHUNT North Ecliptic Pole Time Domain Fiel…

astro-ph.GA2025★ 57 cited

Little red dots as young supermassive black holes in dense ionized cocoons

V. Rusakov, D. Watson, G. P. Nikopoulos +14

The James Webb Space Telescope (JWST) has uncovered many compact galaxies at high redshift with broad hydrogen and helium lines, including the enigmatic population of little red do…

astro-ph.GA2025★ 11 cited

The impact of medium-width bands on the selection, and subsequent luminosity function measurements, of high-z galaxies

N. J. Adams, D. Austin, T. Harvey +7

New, ultra-deep medium-width photometric coverage with JWST's NIRCam instrument provides the potential for much improved photo-z reliability at high redshifts. In this study, we co…

astro-ph.GA2024★ 1 cited

EPOCHS XI: The Structure and Morphology of Galaxies in the Epoch of Reionization to z ~ 12.5

Lewi Westcott, Christopher J. Conselice, Thomas Harvey +29

We present a structural analysis of 521 galaxy candidates at 6.5 < z < 12.5, with in the F444W filter, taken from the EPOCHS v1 sample, consisting of uniformly reduced…

astro-ph.GA2024★ 100 cited

The JWST-PRIMAL Legacy Survey. A JWST/NIRSpec reference sample for the physical properties and Lyman- absorption and emission of galaxies at

K. E. Heintz, G. B. Brammer, D. Watson +45

One of the surprising early findings with JWST has been the discovery of a strong "roll-over" or a softening of the absorption edge of Ly in a large number of galaxies at ($z\gt…

astro-ph.GA2024★ 36 cited

Outshining in the Spatially Resolved Analysis of a Strongly-Lensed Galaxy at z=6.072 with JWST NIRCam

C. Giménez-Arteaga, S. Fujimoto, F. Valentino +19

We present JWST/NIRCam observations of a strongly-lensed, multiply-imaged galaxy at , with magnification factors >~20 across the galaxy. We perform a spatially-resolved an…

astro-ph.GA2023★ 89 cited

Deciphering the JWST spectrum of a 'little red dot' at : An obscured AGN and its star-forming host

Meghana Killi, Darach Watson, Gabriel Brammer +10

JWST has revealed a class of numerous, extremely compact sources, with rest-frame red optical/near-infrared (NIR) and blue ultraviolet (UV) colours, nicknamed "little red dots". We…