239 citations · 845 across the 45 of their papers we have counts for
46 papers
A Single Line-Emitter Identified in an Unbiased Search with JWST/NIRSpec: Multi-Object Coronagraphy for Slitless Spectroscopy
Mason S. Huberty, Claudia Scarlata, Matthew J. Hayes +13
We report the detection of a previously unknown object with a single emission line within the Hubble Ultra Deep Field, using a new JWST NIRSpec technique called Multi-Object Corona…
MEGATRON: The Physical Origins of Steep UV Slopes at High Redshift
Harley Katz, Nicholas Choustikov, Aayush Saxena +7
The ultraviolet (UV) spectral slope, , serves as a fundamental probe of stellar population properties and interstellar medium conditions in galaxies. At high redshift, a small s…
JADES: Evolution of nitrogen abundances in star-forming galaxies from z ~ 1.5-7
Alex J. Cameron, Courtney Carreira, Charlotte Simmonds +22
We present nitrogen abundance measurements based on the low-ionisation [NII]6583 emission line for 588 galaxies between 1.5<z<7.0 from the JWST Advanced Deep Extragalactic Survey (…
Ionizing Photon Production Efficiencies and Chemical Abundances at Cosmic Dawn Revealed by Ultra-Deep Rest-Frame Optical Spectroscopy of JADES-GS-z14-0
Jakob M. Helton, Jane E. Morrison, Kevin N. Hainline +40
JWST has discovered an early period of galaxy formation that was more vigorous than expected, which has challenged our understanding of the early Universe. In this work, we present…
Unsupervised Discovery of High-Redshift Galaxy Populations with Variational Autoencoders
Aayush Saxena
We apply variational autoencoders to automatically discover galaxy populations using publicly available high-redshift \textit{JWST} spectra without prior classification knowledge.…
MEGATRON: the impact of non-equilibrium effects and local radiation fields on the circumgalactic medium at cosmic noon
Corentin Cadiou, Harley Katz, Martin P. Rey +22
We present three cosmological radiation-hydrodynamic zoom simulations of the progenitor of a Milky Way-mass galaxy from the MEGATRON suite. The simulations combine on-the-fly radia…
MEGATRON: Reproducing the Diversity of High-Redshift Galaxy Spectra with Cosmological Radiation Hydrodynamics Simulations
Harley Katz, Martin P. Rey, Corentin Cadiou +21
We present the MEGATRON suite of cosmological radiation hydrodynamics simulations following the formation of Milky Way-mass galaxies from the earliest cosmic epochs when Population…
MEGATRON: The environments of Population III stars at Cosmic Dawn and their connection to present day galaxies
Anatole Storck, Harley Katz, Julien Devriendt +7
We present results of Pop. III formation in the MEGATRON suite of simulations, which self-consistently follows radiation and non-equilibrium chemistry, and resolves gas at near-pc…
MEGATRON: Disentangling Physical Processes and Observational Bias in the Multi-Phase ISM of High-Redshift Galaxies
Nicholas Choustikov, Harley Katz, Alex J. Cameron +10
Now detected out to redshifts of , the rest-frame ultraviolet and optical spectra of galaxies encode numerous physical properties of the interstellar medium (ISM). Accu…
MEGATRON: how the first stars can create an iron metallicity plateau in the smallest dwarf galaxies
Martin P. Rey, Harley Katz, Corentin Cadiou +23
We study the stellar mass-iron metallicity relation of dwarf galaxies in the new high-resolution MEGATRON cosmological radiation-hydrodynamics simulations. These simulations model…
JADES Data Release 4 -- Paper II: Data reduction, analysis and emission-line fluxes of the complete spectroscopic sample
J. Scholtz, S. Carniani, E. Parlanti +38
We present the fourth data release of JADES, the JWST Advanced Deep Extragalactic Survey, providing deep spectroscopic observations in the two GOODS fields. A companion paper prese…
JADES Data Release 4 Paper I: Sample Selection, Observing Strategy and Redshifts of the complete spectroscopic sample
Emma Curtis-Lake, Alex J. Cameron, Andrew J. Bunker +34
This paper accompanies Data Release 4 of the JWST Deep Extragalactic Survey (JADES), which presents the full NIRSpec spectroscopy of the survey. We provide spectra of 5190 targets…
JADES: The Star Formation and Dust Attenuation Properties of Galaxies at 3<z<7
Charity Woodrum, Irene Shivaei, Joris Witstok +23
We present the star formation and dust attenuation properties for a sample of 602 galaxies at redshifts , as part of the JADES survey. Our analysis is based on measurem…
JADES: the chemical enrichment pattern of distant galaxies -- enhancement, silicon depletion, and iron enhancement
Yuki Isobe, Roberto Maiolino, Xihan Ji +26
We present gas-phase abundances of carbon (C), -elements (O, Ne, Si, and Ar) and iron (Fe) obtained from stacked spectra of high- star-forming galaxies with the deep Near Inf…
On the origins of oxygen: ALMA and JWST characterise the multi-phase, metal-enriched, star-bursting medium within a 'normal' galaxy
Joris Witstok, Renske Smit, William M. Baker +29
The unexpectedly high abundance of galaxies at revealed by JWST has sparked a debate on the nature of early galaxies and the physical mechanisms regulating their formation…
Dissecting the massive pristine, neutral gas reservoir of a remarkably bright galaxy at z = 14.179
Kasper E. Heintz, Clara Pollock, Joris Witstok +6
At cosmic dawn, the first stars and galaxies are believed to form from and be deeply embedded in clouds of dense, pristine gas. Here we present a study of the JWST/NIRSpec data of…
Glimmers in the Cosmic Dawn. II. A variability census of supermassive black holes across the Universe
Vieri Cammelli, Jonathan C. Tan, Alice R. Young +7
Understanding the origin and evolution of supermassive black holes (SMBH) stands as one of the most important challenges in astrophysics and cosmology, with little current theoreti…
Cloudy-Maraston: Integrating nebular continuum and line emission with the Maraston stellar population synthesis models
Sophie L. Newman, Christopher C. Lovell, Claudia Maraston +5
The James Webb Space Telescope has ushered in an era of abundant high-redshift observations of young stellar populations characterized by strong emission lines, motivating us to in…
Hitting the slopes: A spectroscopic view of UV continuum slopes of galaxies reveals a reddening at z > 9.5
Aayush Saxena, Alex J. Cameron, Harley Katz +26
The UV continuum slope of galaxies, , is a powerful diagnostic. Understanding the redshift evolution of and its dependence on key galaxy properties can shed light on the evo…
Efficient Ionizers with Low H+[OIII] Equivalent Widths: JADES Spectroscopy of a Peculiar High-z Population
Isaac H. Laseter, Michael V. Maseda, Charlotte Simmonds +15
Early JWST photometric studies discovered a population of UV faint () Lyman break galaxies with spectral energy distributions implying young ages ($…
The eventful life of a luminous galaxy at z = 14: metal enrichment, feedback, and low gas fraction?
Stefano Carniani, Francesco D'Eugenio, Xihan Ji +25
JADES-GS-z14-0 is the most distant spectroscopically confirmed galaxy yet, at . With a UV magnitude of -20.81, it is one of the most luminous galaxies at cosmic dawn and its…
JADES: Measuring reionization properties using Lyman-alpha emission
Gareth C. Jones, Andrew J. Bunker, Aayush Saxena +19
Ly is the transition to the ground state from the first excited state of hydrogen (the most common element). Resonant scattering of this line by neutral hydrogen greatly impedes…
Witnessing the onset of reionisation via Lyman- emission at redshift 13
Joris Witstok, Peter Jakobsen, Roberto Maiolino +34
$\require{mediawiki-texvc}$Cosmic Reionisation commenced when ultraviolet (UV) radiation produced in the first galaxies began illuminating the cold, neutral gas that filled the pri…
21 Balmer Jump Street: The Nebular Continuum at High Redshift and Implications for the Bright Galaxy Problem, UV Continuum Slopes, and Early Stellar Populations
Harley Katz, Alex J. Cameron, Aayush Saxena +11
We study the physical origin and spectroscopic impact of extreme nebular emission in high-redshift galaxies. The nebular continuum, which can appear during an extreme starburst, is…