15 papers
A SHARP Look at Quenching and Bulge-Disk Growth in Massive Galaxies at Cosmic Noon
Chiara Mancini, Adriana Gargiulo, Alvio Renzini +11
The physical mechanisms that quench star formation in massive galaxies remain poorly understood. At cosmic noon (1<z<3), when star formation and AGN activity peak, galaxies rapidly…
The quasi-star model for Little Red Dots: potential and challenges
Fabrizio Gentile, Mauro Giavalisco, Emanuele Daddi +25
(Abridged) Little Red Dots (LRDs) are a class of sources discovered by JWST observationally defined by a "V-shaped" rest-frame UV-Optical SED, a compact or unresolved morphology, a…
COSMOS-Web galaxy groups: Evolution of red sequence and quiescent galaxy fraction
Greta Toni, Matteo Maturi, Gianluca Castignani +33
We investigate the redshift and group richness dependence of the quiescent fraction and red-sequence (RS) parameters in COSMOS galaxy groups from z=0 to z=3.7. We analyzed the deep…
Do little red dots really form a distinct class of astronomical objects?
Jean-Baptiste Billand, David Elbaz, Maximilien Franco +8
JWST observations have identified a class of enigmatic sources known as "Little Red Dots" (LRDs). These have been interpreted as a distinct class of active galactic nuclei (AGN) an…
Quiescent fractions in high-redshift galaxy groups reflect their hot-or-cold state of gas accretion
Guillaume Elias, Emanuele Daddi, Chiara D'Eugenio +15
Cold accretion and quenching are closely related aspects of galaxy evolution, as sustained gas supply is required to maintain star formation. High-redshift galaxy groups therefore…
A first [CII] view of high-z quiescent galaxies
C. D'Eugenio, E. Daddi, R. Gobat +10
We present ALMA detections (or stringent upper limits) of the [CII] 158 emission line and underlying dust continuum from five massive quenched galaxies (QGs) at 2<z<4.7. We f…