380 citations · 1.2k across the 22 of their papers we have counts for
24 papers
Distilling Graph Geometry: Knowledge Gap from GNNs to MLPs
Zhewei Chen, Hao Zhu, Jiaojiao Jiang +1
GNN-to-MLP distillation aims to retain the predictive accuracy of a message-passing teacher while deploying a graph-free MLP at inference. Existing methods mainly transfer node-wis…
BlackTHUNDER Reveals a Massive Filament around a Compact AGN at
Giulia Tozzi, Hannah Übler, Eleonora Parlanti +27
Despite the growing number of compact active galactic nuclei (AGN) at discovered by JWST, their formation and evolution remain poorly understood. This paper investigates the…
Dust enrichment from core-collapse supernovae and extinction curves in the high-redshift universe
Koki Otaki, Raffaella Schneider, Simone Bianchi +4
Recent JWST observations have revealed that some galaxies at generally exhibit relatively flat ultraviolet (UV) attenuation curves and a weak UV bump. These features…
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…
Little red dot variability over a century reveals black hole envelope via a giant Einstein cross
Zijian Zhang, Mingyu Li, Masamune Oguri +79
"Little red dots" (LRDs) represent a new population of astronomical objects uncovered by JWST whose nature remains debated. Although many LRDs are suspected as active galactic nucl…
A deep X-ray look to the most obscured quasar at z~3.6 and its environment
I. Villani, L. Zappacosta, E. Piconcelli +17
The most luminous and obscured quasars (QSOs) detected in infrared all-sky surveys could represent a key co-evolutionary phase from nuclear to circum-galactic (CG) scales in the fo…
VENUS: A Strongly Lensed Clumpy Galaxy at behind the Galaxy Cluster MACS J0257.1-2325
Minami Nakane, Vasily Kokorev, Seiji Fujimoto +75
We present the discovery of a strongly lensed galaxy at , dubbed the ``Misty Moons'', identified in the JWST Treasury Survey, Vast Exploration for Nascent, Unexplored S…
BlackTHUNDER: Evidence of three massive black holes in a z~5 galaxy
Hannah Übler, Giovanni Mazzolari, Roberto Maiolino +41
We present observational evidence of three massive, accreting black holes (BHs) in the z=5.0167 galaxy J0148-4214 from JWST/NIRSpec-IFU spectroscopy. The BHs are revealed through b…
BlackTHUNDER: Shedding light on a dormant and extreme little red dot at z=8.50
Gareth C. Jones, Hannah Übler, Roberto Maiolino +17
Recent photometric surveys with JWST have revealed a significant population of mysterious objects with red colours, compact morphologies, frequent signs of active galactic nucleus…
JADES reveals a large population of low mass black holes at high redshift
Sophia Geris, Roberto Maiolino, Yuki Isobe +24
JWST has revealed a large population of active galactic nuclei (AGN) in the distant universe, which are challenging our understanding of early massive black hole seeding and growth…
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…
BlackTHUNDER strikes twice: rest-frame Balmer-line absorption and high Eddington accretion rate in a Little Red Dot at
Francesco D'Eugenio, Roberto Maiolino, Michele Perna +29
JWST has revealed a population of 'Little Red Dots' (LRDs): compact, red objects at redshifts z=2-9 with 'v'-shaped spectral energy distributions, broad permitted lines, and, often…
BlackTHUNDER -- A non-stellar Balmer break in a black hole-dominated little red dot at
Xihan Ji, Roberto Maiolino, Hannah Übler +34
Recent observations from JWST have revealed an abundant population of active galactic nuclei (AGN) and so-called ``Little Red Dots'' (LRDs) at , many of wh…
HYPERION: broad-band X-ray-to-near-infrared emission of Quasars in the first billion years of the Universe
I. Saccheo, A. Bongiorno, E. Piconcelli +41
We aim at characterizing the X-ray-to-optical/near-infrared broad-band emission of luminous QSOs in the first Gyr of cosmic evolution to understand whether they exhibit differences…
HYPERION. Shedding light on the first luminous quasars: A correlation between UV disc winds and X-ray continuum
A. Tortosa, L. Zappacosta, E. Piconcelli +41
One of the main open questions in the field of luminous () quasars (QSOs) at is the rapid formation (Gyr) of their superm…
A dormant, overmassive black hole in the early Universe
Ignas Juodžbalis, Roberto Maiolino, William M. Baker +25
Recent observations have found a large number of supermassive black holes already in place in the first few hundred million years after Big Bang. The channels of formation and grow…
The formation and cosmic evolution of dust in the early Universe. I. Dust sources
Raffaella Schneider, Roberto Maiolino
Dust-obscured star formation has dominated the cosmic history of star formation since z = 4. However, the recent finding of significant amount of dust in galaxies out to z = 8 has…
Scaling relations and baryonic cycling in local star-forming galaxies: II. Gas content and star-formation efficiency
L. K. Hunt, C. Tortora, M. Ginolfi +1
Assessments of the cold-gas reservoir in galaxies are a cornerstone for understanding star-formation processes and the role of feedback and baryonic cycling in galaxy evolution. He…
The properties of He II 1640 emitters at z ~ 2.5-5 from the VANDELS survey
A. Saxena, L. Pentericci, M. Mirabelli +24
Strong He II emission is produced by low-metallicity stellar populations. Here, we aim to identify and study a sample of He II -emitting galaxies at redshifts of $z \sim 2.5…
Scaling relations and baryonic cycling in local star-forming galaxies: I. The sample
Michele Ginolfi, Leslie K. Hunt, Crescenzo Tortora +2
Metallicity and gas content are intimately related in the baryonic exchange cycle of galaxies, and galaxy evolution scenarios can be constrained by quantifying this relation. To th…
The WISSH Quasars Project I. Powerful ionised outflows in hyper-luminous quasars
M. Bischetti, E. Piconcelli, G. Vietri +19
Models and observations suggest that both power and effects of AGN feedback should be maximised in hyper-luminous (L_Bol>10^47 erg/s) quasars, i.e. objects at the brightest end of…
Fast outflows and star formation quenching in quasar host galaxies
S. Carniani, A. Marconi, R. Maiolino +17
Negative feedback from active galactic nuclei (AGN) is considered a key mechanism in shaping galaxy evolution. Fast, extended outflows are frequently detected in the AGN host galax…
The extinction law at high redshift and its implications
S. Gallerani, R. Maiolino, Y. Juarez +9
We analyze the optical-near infrared spectra of 33 quasars with redshifts 3.9<z<6.4 to investigate the properties of dust extinction at these cosmic epochs. The SMC extinction curv…
LSD: Lyman-break galaxies Stellar populations and Dynamics. I: Mass, metallicity and gas at z~3.1
F. Mannucci, G. Cresci, R. Maiolino +8
We present the first results of a project, LSD, aimed at obtaining spatially-resolved, near-infrared spectroscopy of a complete sample of Lyman-Break Galaxies at z~3. Deep observat…