activity
20232026
most citedThe case for super-Eddington accretion in JWST broad-line AGN during the first billion years

11 citations · 61 across the 37 of their papers we have counts for

collaborators

39 papers

astro-ph.GA2026

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…

astro-ph.GA2026

MOCSS: Multi-Object Coronagraphy for JWST/NIRSpec Slitless Spectroscopy

Mason S. Huberty, Claudia Scarlata, Matthew J. Hayes +10

We present an experimental JWST/NIRSpec observational method to obtain G140M/F100LP slitless spectroscopic observations. This "Multi-Object Coronagraphy for Slitless…

astro-ph.GA2026

Stellar Yields of Rapidly Rotating Population III Stars for the High Redshift Universe

Devesh Nandal, Konstantinos Topalakis, Vasilisa Sergienko +6

JWST has revealed rapid nitrogen enrichment in high redshift galaxies, renewing the need for stellar yields that follow metal free stars beyond the main sequence and across their f…

astro-ph.SR2026

The Treasury of Extremely Metal-Poor O Stars

O. Grace Telford, Christiana Erba, Kristen B. W. McQuinn +10

The Treasury of Extremely Metal-Poor O Stars (TEMPOS) is a Hubble Space Telescope survey of hot and massive O-type stars in nearby, low-metallicity galaxies (20% of the s…

astro-ph.GA2026

Resonantly Scattered CIV Emission in Local Star-forming Galaxies: Radiative Transfer Constraints on High-ionization Gas in Reionization Analogs

Zhihui Li, Danielle A. Berg, Simon Gazagnes +4

Rest-frame ultraviolet emission lines are diagnostics of hard ionizing spectra and highly ionized gas in galaxies resembling the sources of cosmic reionization. Nebular CIV emissio…

astro-ph.GA2026

Recovering Ionizing Photon Escape and Galaxy Scaling Relations in the LzLCS via Si II and C II Absorption Lines and Mock Spectra from a Radiation-Hydrodynamic Simulation

John Trevino, Simon Gazagnes, Danielle A. Berg +7

In this work, we use a radiation-hydrodynamic simulation of a single virtual galaxy to study Si II and C II line profiles seen in stacked HST/COS spectra of 58…

astro-ph.GA2026

CLASSY. XV. Kinematics and Spatial Distributions of Outflows in Local Highly Star-Forming Galaxies

Mason S. Huberty, Cody A. Carr, Claudia Scarlata +17

Star-forming galaxies drive massive outflows that play an important role in galaxy evolution by regulating feedback and influencing the dynamics of surrounding media. Measuring gal…

astro-ph.GA2026

The First Empirical Calibration of the MIR Abundance Diagnostic Ne with JWST

Noah S. J. Rogers, Evan D. Skillman, Danielle A. Berg +10

Large surveys of galaxies in the local and high-redshift Universe have, traditionally, relied on the intensity of rest-optical emission lines from metal ions in the Interstellar Me…

astro-ph.GA2025

THRILS -- The High-(Redshift+Ionization) Line Search: Program Description & Redshift Catalog

Taylor A. Hutchison, Rebecca L. Larson, Pablo Arrabal Haro +46

To date, many spectroscopic confirmations of z>7 galaxies have been obtained using JWST/NIRSpec prism observations, with most of their physical properties inferred from these obser…

astro-ph.GA2025

CLASSY XIII. Cutting through the Clouds - Comparing Indirect Tracers of Ionizing Photon Escape

Kaelee S. Parker, Danielle A. Berg, John Chisholm +25

The Epoch of Reionization (EoR) provides critical insights into the role of early galaxies in shaping the ionization state of the universe. However, because of the opacity of the i…

astro-ph.GA2025★ 2 cited

JWST/MIRI-MRS view of the metal-poor galaxy CGCG 007-025: the spatial location of PAHs and very highly ionized gas

Macarena G. del Valle-Espinosa, Matilde Mingozzi, Bethan James +16

Polycyclic Aromatic Hydrocarbons (PAHs) are key diagnostics of the physical conditions in the interstellar medium and are widely used to trace star formation in the mid-infrared (m…

astro-ph.GA2025

Consistent gas-phase C/O abundances from UV and optical emission lines: a robust scale for chemical evolution across cosmic time

Paige M. Kelly, Tucker Jones, Yuguang Chen +5

The carbon to oxygen (C/O) abundance ratio is a valuable tracer of star formation history, as C and O enrichment occurs on different timescales. However, measurements based on ultr…

astro-ph.GA2025★ 4 cited

The AURORA Survey: High-Redshift Empirical Metallicity Calibrations from Electron Temperature Measurements at z=2-10

Ryan L. Sanders, Alice E. Shapley, Michael W. Topping +29

We present detections of auroral emission lines of [OIII], [OII], [SIII], and [SII] in deep JWST/NIRSpec spectroscopy for 41 star-forming galaxies at from the AURORA su…

astro-ph.GA2025★ 1 cited

The AURORA Survey: Robust Helium Abundances at High Redshift Reveal A Subpopulation of Helium-Enhanced Galaxies in the Early Universe

Danielle A. Berg, Ryan L. Sanders, Alice E. Shapley +16

We present the first robust helium (He) abundance measurements in star-forming galaxies at redshifts using deep, moderate-resolution JWST/NIRSpec spectr…

astro-ph.GA2025

CLASSY XII: Nitrogen Enrichment Shaped by Gas Density and Feedback

Karla Z. Arellano-Córdova, Danielle A. Berg, Matilde Mingozzi +25

We investigate the chemical evolution of N/O using a sample of 45 local star-forming galaxies (SFGs) from the CLASSY survey. This sample spans a wide range of galaxy properties, wi…

astro-ph.GA2025★ 5 cited

The JWST/AURORA Survey: Multiple Balmer and Paschen Emission Lines for Individual Star-forming Galaxies at z=1.5-4.4. I. A Diversity of Nebular Attenuation Curves and Evidence for Non-Unity Dust Covering Fractions

Naveen A. Reddy, Alice E. Shapley, Ryan L. Sanders +14

We present the nebular attenuation curves and dust covering fractions for 24 redshift z=1.5-4.4 star-forming galaxies using multiple Balmer and Paschen lines from the JWST/AURORA s…

astro-ph.GA2025★ 8 cited

Exploring the mysterious high-ionization source powering [Ne V] in high-z analog SBS0335-052 E with JWST/MIRI

Matilde Mingozzi, Macarena Garcia Del Valle-Espinosa, Bethan L. James +19

Nearby blue compact dwarf galaxies (BCDs) share similar properties with objects from the Epoch of Reionization revealed by JWST, in terms of low stellar mass, low metallicity and h…

astro-ph.GA2024★ 1 cited

On the Average Ultraviolet Emission Line Spectra of High-Redshift Galaxies: Hot and Cold, Carbon-poor, Nitrogen-modest, and Oozing Ionizing Photons

Matthew J. Hayes, Alberto Saldana-Lopez, Annalisa Citro +5

We determine the spectroscopic properties of ~1000 ostensibly star-forming galaxies at redshifts (z=4-10) using prism spectroscopy from JWST/NIRSpec. With rest-wavelength coverage…

astro-ph.GA2024

Synergistic Radiative Transfer Modeling of MgII and Lyα Emission in Multiphase, Clumpy Galactic Environments: Application to Low-Redshift Lyman Continuum Leakers

Zhihui Li, Max Gronke, Timothy Heckman +9

We conducted systematic radiative transfer (RT) modeling of the Mg II doublet line profiles for 33 low-redshift Lyman continuum (LyC) leakers, and Ly modeling for a subset of si…

astro-ph.GA2024★ 8 cited

NGDEEP: The Star Formation and Ionization Properties of Galaxies at

Lu Shen, Casey Papovich, Jasleen Matharu +23

We use JWST/NIRISS slitless spectroscopy from the Next Generation Deep Extragalactic Exploratory Public (NGDEEP) Survey to investigate the physical condition of star-forming galaxi…

astro-ph.GA2024★ 1 cited

A negligible contribution of two luminous ~ 7.5 galaxies to the ionizing photon budget of reionization

S. Gazagnes, J. Chisholm, R. Endsley +12

We present indirect constraints on the absolute escape fraction of ionizing photons () of the system GN 42912 which comprises two luminous galaxies ($M_{\rm…

astro-ph.GA2024

Strong rest-UV emission lines in a "little red dot" AGN at : Early SMBH growth alongside compact massive star formation?

Hollis B. Akins, Caitlin M. Casey, Danielle A. Berg +11

JWST has now revealed a population of broad-line AGN at characterized by a distinctive SED shape, with very red rest-frame optical and very blue rest-frame UV continuum. Whil…

astro-ph.GA2024

The AURORA Survey: An Extraordinarily Mature, Star-forming Galaxy at

Alice E. Shapley, Ryan L. Sanders, Michael W. Topping +28

We present the properties of a massive, large, dusty, metal-rich, star-forming galaxy at z_spec=6.73. GOODSN-100182 was observed with JWST/NIRSpec as part of the AURORA survey, and…

astro-ph.GA2024

CLASSY XI: Tracing Neutral Gas Properties using UV Absorption Lines and 21-cm Observations

Kaelee S. Parker, Danielle A. Berg, Simon Gazagnes +15

Rest-frame far-ultraviolet (FUV) observations from JWST are revolutionizing our understanding of the high-z galaxies that drove reionization and the mechanisms by which they accomp…