activity
20242026
collaborators

8 papers

astro-ph.GA2026

JWST Spectroscopic Insights Into the Diversity of Galaxies in the First 500 Myr: Short-Lived Snapshots Along a Common Evolutionary Pathway

Guido Roberts-Borsani, Pascal Oesch, Richard Ellis +21

We investigate the nature and spectroscopic diversity of early galaxies from a sample of 41 sources at z>10 with JWST/NIRSpec prism observations. We compare the properties of stron…

astro-ph.GA2026

Everything Every Band All at Once I: A Global Morphology Catalog in Abell 2744 based on UNCOVER/MegaScience

Yunchong Zhang, Tim B. Miller, Sedona H. Price +31

We present spectrally-resolved structural parameter measurements of 28,274 sources from the legacy lensing field of Abell 2744, quantifying global structures from observed $0.7 μm…

astro-ph.GA2026

When relics were made: vigorous stellar rotation and low dark matter content in the massive ultra-compact galaxy GS-9209 at z=4.66

Robert G. Pascalau, Francesco D'Eugenio, Sandro Tacchella +24

JWST uncovered a large number of massive quiescent galaxies (MQGs) at , which theoretical models struggle to reproduce. Explaining the number density of such objects requires…

astro-ph.GA2025

Unusually High Gas-to-Dust Ratios Observed in High-Redshift Quiescent Galaxies

Justin S. Spilker, Katherine E. Whitaker, Desika Narayanan +15

Tracking the cold molecular gas contents of galaxies is critical to understand the interplay between star formation and galaxy growth across cosmic time. Observations of the long-w…

astro-ph.GA2025

Ages and metallicities of quiescent galaxies: confronting broadband () colours with stellar absorption lines

Chloe M. Cheng, Mariska Kriek, Aliza G. Beverage +9

For decades, studying quiescent galaxies beyond has been challenging due to the reliance on photometric spectral energy distributions, which are highly susceptible to dege…

astro-ph.GA2025

Decoding the variability in the star-formation histories of z ~ 0.8 galaxies

Jenny T. Wan, Sandro Tacchella, Francesco D'Eugenio +2

The scatter of the star-forming main sequence (SFMS) holds a wealth of information about how galaxies evolve. The timescales encoded in this scatter can provide valuable insight in…