activity
20242026
most citedA Fleeting GLIMPSE of N/O Enrichment at Cosmic Dawn: Evidence for Wolf Rayet N Stars in a z = 6.1 Galaxy

2 citations · 4 across the 5 of their papers we have counts for

collaborators

5 papers

astro-ph.GA2026

An Optical Illusion: High Electron Densities Create Extremely Metal-Poor Galaxy Impostors

Tiger Yu-Yang Hsiao, Danielle A. Berg, Steven L. Finkelstein +8

JWST has enabled the discovery of dozens of extremely metal-poor galaxies (EMPGs) with metallicities below , representing a significant leap toward detecting the fi…

astro-ph.GA2025★ 2 cited

A Fleeting GLIMPSE of N/O Enrichment at Cosmic Dawn: Evidence for Wolf Rayet N Stars in a z = 6.1 Galaxy

Danielle A. Berg, Rohan P. Naidu, John Chisholm +18

We present the discovery of extreme nitrogen enrichment by Wolf Rayet nitrogen stars (WN) in the metal-poor (~10% Z_odot), lensed, compact (R_eff ~ 20 pc) galaxy RXCJ2248 at z=6.1,…

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.GA2024★ 1 cited

The JWST EXCELS survey: direct estimates of C, N, and O abundances in two relatively metal-rich galaxies at

K. Z. Arellano-Córdova, F. Cullen, A. C. Carnall +14

We present a spectroscopic analysis of two star-forming galaxies at observed with JWST/NIRSpec as part of the EXCELS survey. The detection of the CIII]~1906,09, [OII…

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…