activity
20242026
most citedSpectroscopic Confirmation of an Ultra-Massive Galaxy in a Protocluster at

20 citations · 29 across the 8 of their papers we have counts for

collaborators

8 papers

astro-ph.GA2026

MAGAZ3NE: Spatially Resolved Ages and Chemical Abundances of Ultra-Massive Quiescent Galaxies at z 3.5 using JWST/NIRSpec IFU

Adit H. Edward, Jacqueline Antwi-Danso, Adam Muzzin +14

We present spatially-resolved measurements of stellar age, [Fe/H], and [/Fe] in three ultra-massive (), compact ( kpc) quie…

astro-ph.GA2026

MAGAZ3NE: Dust Deficiency in Ultramassive Quiescent Galaxies at with ALMA Observations

Wenjun Chang, Gillian Wilson, Ben Forrest +14

A major challenge in identifying massive quiescent galaxies at is distinguishing truly passive systems from dust-obscured star-forming galaxies, as both populations exhibit s…

astro-ph.GA2025

MAGAZ3NE: Far-IR and Radio Insights into the Nature and Properties of Ultramassive Galaxies at

Wenjun Chang, Gillian Wilson, Ben Forrest +12

Deep and wide-field near-infrared (NIR) surveys have recently discovered and confirmed ultramassive galaxies (UMGs; ) spectroscopically at high redsh…

astro-ph.GA2025

Excavating The Ruins: an Ancient Galaxy Which Formed in the First 500 Myr

Ian McConachie, Jacqueline Antwi-Danso, Wenjun Chang +14

We present the analysis of an ancient galaxy at which we dub ``Eridu.'' Simultaneously modeling the JWST/NIRSpec G140M and G235M spectra from the SMILES program and $0.4-…

astro-ph.GA2025

A massive and evolved slow-rotating galaxy in the early Universe

Ben Forrest, Adam Muzzin, Danilo Marchesini +15

In the contemporary Universe, most galaxies are supported by ordered rotation, yet a significant subset of the most massive and quiescent systems are dominated by random stellar mo…

astro-ph.GA2024

MAGAZ3NE: Evidence for Galactic Conformity in Protoclusters

Ian McConachie, Gillian Wilson, Ben Forrest +16

We examine the quiescent fractions of massive galaxies in six spectroscopically-confirmed protoclusters in the COSMOS field, one of which is newly confirmed and present…

astro-ph.GA2024★ 9 cited

MAGAZ3NE: Massive, Extremely Dusty Galaxies at Lead to Photometric Overestimation of Number Densities of the Most Massive Galaxies at

Ben Forrest, M. C. Cooper, Adam Muzzin +17

We present rest-frame optical spectra from Keck/MOSFIRE and Keck/NIRES of 16 candidate ultramassive galaxies targeted as part of the Massive Ancient Galaxies at Near-Infrared…

astro-ph.GA2024★ 20 cited

Spectroscopic Confirmation of an Ultra-Massive Galaxy in a Protocluster at

Stephanie M. Urbano Stawinski, M. C. Cooper, Ben Forrest +8

We present spectroscopic confirmation of an ultra-massive galaxy (UMG) with at in the Extended Groth Strip (EGS)…