activity
20242026
most citedNew AGN diagnostic diagrams based on the [OIII] auroral line

66 citations · 103 across the 8 of their papers we have counts for

collaborators

8 papers

astro-ph.GA2026

LATED: JWST integral field spectroscopy of a galaxy caught in chemical infancy at behind Abell 2744

Mingyu Li, Roberto Maiolino, Zheng Cai +26

When Population III (Pop III) star formation ended remains an open question. LATED-1 is an intrinsically faint () Ly emitter at revealed by VLT/MU…

astro-ph.GA2026

LATED: Ly-anchored photometric selection of candidate metal-free and extremely metal-poor star formation from the end of reionisation to cosmic noon

Mingyu Li, Zheng Cai, Roberto Maiolino +24

Cosmological simulations allow a low-level tail of Population III (Pop III) star formation to persist to . Spectroscopic confirmation is expensive, so an efficient photometr…

astro-ph.GA2026★ 2 cited

The search for Population III: Confirmation of a HeII emitter with no metal lines at z=10.6

Roberto Maiolino, Hannah Übler, Michele Perna +49

We report the confirmation of a HeII1640 emitter located at 3 pkpc from the galaxy GN-z11, at z=10.6. The detection, based on JWST NIRSpec-IFU high-resolution spectroscopy, conf…

astro-ph.GA2026

Chemical Abundance Ratios of Nitrogen Rich Galaxies Identified at : Observational Demographics and Models

Kuria Watanabe, Masami Ouchi, Kimihiko Nakajima +13

We present chemical abundance ratios of 8 nitrogen-rich ([N/O]) galaxies at identified by the first 4 years of the JWST observations, and compare these ratios wi…

astro-ph.GA2026★ 2 cited

GA-NIFS and JADES: Confirmation of pristine gas near GN-z11

Hannah Übler, Roberto Maiolino, Pablo G. Pérez-González +32

According to the leading cosmological model, a first generation of stars called Population III (PopIII), condensed almost entirely out of hydrogen and helium, must have initiated t…

astro-ph.GA2025★ 27 cited

A black hole in a near-pristine galaxy 700 million years after the Big Bang

Roberto Maiolino, Hannah Uebler, Francesco D'Eugenio +36

The recent discovery of a large number of massive black holes within the first two billion years after the Big Bang, as well as their peculiar properties, have been largely unexpec…

astro-ph.GA2025★ 6 cited

New Methods of Identifying AGN in the Early Universe using Spectroscopy and Photometry in the JWST Era

Flor Arevalo Gonzalez, Titanilla Braun, James Trussler +7

We explore spectroscopic and photometric methods for identifying high-redshift galaxies containing an Active Galactic Nucleus (AGN) with JWST observations. After demonstrating the…

astro-ph.GA2024★ 66 cited

New AGN diagnostic diagrams based on the [OIII] auroral line

G. Mazzolari, H. Übler, R. Maiolino +8

The James Webb Space Telescope (JWST) is revolutionizing our understanding of black holes formation and growth in the early Universe. However, JWST has also revealed that some of t…