16 papers
How can we finally see the first light? Status and perspective in the search for Population III stars
Alessandra Venditti, Daniel Schaerer, Erik Zackrisson +28
Finding the first (Population III or Pop III) stars is one of the fundamental quests of astronomy, aiming to deliver the missing link in how stars form at early cosmic times. Yet t…
Probing the faint end of simulated galaxy counts at z>3
Flaminia Fortuni, Emiliano Merlin, Marco Castellano +2
Simulations and observations now probe comparable redshift regimes with unprecedented accuracy, enabling direct consistency tests through forward modeling. In a previous work, we i…
Beyond the [OIII]4363 auroral line: [NeIII]3868 as a direct tracer of electron temperature
Borja Pérez-DÃaz, José M. VÃlchez, Marco Castellano +9
Auroral lines enable accurate measurements of chemical abundances in ionized gaseous nebulae thanks to their sensitivity to electron temperature. However, metal-enriched systems re…
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…
Mysteries of Capotauro: investigating the puzzling nature of an extreme F356W-dropout
Giovanni Gandolfi, Giulia Rodighiero, Marco Castellano +38
JWST has uncovered a diverse population of extreme near-infrared dropouts, including ultra high-redshift () galaxy candidates, dust-obscured galaxies challenging dust product…
Witnessing downsizing in the making: quiescent and breathing galaxies at the dawn of the Universe
Emiliano Merlin, Flaminia Fortuni, Antonello Calabrò +18
[Shortened for arXiv] We conduct a systematic search for quiescent galaxies at in six extragalactic deep fields observed with NIRCam, with t…