activity
20232026
most citedThe COSMOS-Web deep galaxy group catalog up to

12 citations · 61 across the 18 of their papers we have counts for

collaborators

21 papers

astro-ph.GA2026

Prevalence of radio Active Galactic Nuclei in galaxy groups since z=3.5 in the COSMOS-Web field

F. Ubertosi, I. Delvecchio, I. Prandoni +30

Radio active galactic nuclei (AGN) are key tracers of kinetic feedback from supermassive black holes. Although the dependence of their triggering on host stellar mass is well known…

astro-ph.GA2026

X-ray Characterization of Galaxy Groups and Hickson Groups in COSMOS-Web to z~3.8 I. X-ray Luminosity Function Evolution

Ghassem Gozaliasl, Günther Hasinger, Gavin Leroy +35

Galaxy groups are the dominant halo environment in the Universe and a sensitive laboratory for feedback and gas-cycling physics, yet a uniform, intermediate-redshift X-ray characte…

astro-ph.GA2026

Do Submillimeter Galaxies Trace Megaparsec Large-scale Structures? -- An Overdensity Analysis of 449 Submillimeter Galaxies in COSMOS

Canze Deng, Daizhong Liu, Helmut Dannerbauer +19

We present an environmental analysis and overdensity catalog for a large sample of submillimeter galaxies (SMGs) in the COSMOS field in order to understand whether SMGs are signpos…

astro-ph.GA2026

Rest-Frame UV and Optical Structural Evolution of Narrowband-Selected Lyman-alpha Emitters at z = 2-7 with JWST/NIRCam

Ronaldo Laishram, Haruka Kusakabe, Satoshi Kikuta +8

We present a systematic study of the rest-frame ultraviolet (UV) and optical morphologies of Ly emitters (LAEs) at - from the SILVERRUSH multi-narrowband catalog,…

astro-ph.GA2026

COSMOS-Web: From early star-formation enhancement to late suppression in galaxy groups

R. C. Arango-Toro, C. Laigle, J. Lewis +29

Galaxy groups trace dense environments where interactions, gas removal, and reduced accretion may drive quenching. Common diagnostics trace star formation over short timescales ($\…

astro-ph.GA2026

COSMOS-Web: does halo mass alone shape the clustering of star-forming and quiescent galaxies?

Louise Paquereau, Clotilde Laigle, Henry Joy McCracken +29

While stellar mass correlates strongly with halo mass, it remains unclear whether halo mass alone governs galaxy star-formation activity, or whether secondary halo properties and e…

astro-ph.GA2026

COSMOS-Web: A Multi-wavelength Morphological Catalog of ~780,000 Galaxies

Lilan Yang, Jeyhan S. Kartaltepe, Nicole E. Drakos +20

We present multi-wavelength morphological measurements for all galaxies in the COSMOS-Web survey, i.e., 780,000 galaxies contained in the COSMOS2025 catalog. We perform both…

astro-ph.GA2026

COSMOS-Web: Galaxy Size and Surface Brightness Evolution at Rest-Frame 1.22 m Since

Si-Yue Yu, Andreas L. Faisst, Taotao Fang +7

We present the evolution of galaxy size and surface brightness in the rest-frame band (1.22 m), tracing the stellar mass distribution, over , using a samp…

astro-ph.GA2026

Molecular gas properties of star-forming brightest group galaxies at

Greta Toni, Gianluca Castignani, Françoise Combes +4

Recent efforts to characterise the molecular gas content of brightest cluster galaxies (BCGs) at intermediate redshift have revealed a sub-population of gas-rich systems, whose sta…

astro-ph.CO2026

The impact of cosmic filaments on starburst galaxies across cosmic times

Baptiste Jego, Matthieu Béthermin, Katarina Kraljic +17

Cosmological simulations suggest that various galaxy properties depend on their location within the cosmic web. Yet direct observational evidence of the dependence of star formatio…

astro-ph.CO2026★ 4 cited

An ultra-high-resolution map of (dark) matter

Diana Scognamiglio, Gavin Leroy, David Harvey +38

Ordinary matter-including particles such as protons and neutrons-accounts for only about one sixth of all matter in the Universe. The rest is dark matter, which does not emit or ab…

astro-ph.GA2026★ 1 cited

Star formation quenching precedes morphological transformation in COSMOS-WEB's richest galaxy groups

Z. Ghaffari, G. Gozaliasl, A. Biviano +26

We analyzed the 25 richest galaxy groups in COSMOS-Web at z = 0.18-3.65, identified via the AMICO algorithm. These groups contain 20-30 galaxies with high (>75%) membership probabi…

astro-ph.GA2025

Sparse by the River: Diverse Environments of z > 3 Massive Quiescent Galaxies

Nguyen Binh, Arianna S. Long, Jacqueline Antwi-Danso +29

High-redshift (), massive quiescent galaxies (QGs) offer a significant window into early Universe galaxy formation. Previous works have predicted miscellaneous properties fo…

astro-ph.GA2025

Large-Scale Structure in COSMOS-Web: Tracing Galaxy Evolution in the Cosmic Web up to with the Largest JWST Survey

Hossein Hatamnia, Bahram Mobasher, Sina Taamoli +31

We present a reconstruction of the large-scale structure using the James Webb Space Telescope's (JWST) COSMOS-Web program to trace environmentally driven galaxy evolution up to $z\…

astro-ph.GA2025★ 3 cited

The stellar mass function of quiescent and star-forming galaxies and its dependence on morphology in COSMOS-Web

Marko Shuntov, Olivier Ilbert, Claudia del P. Lagos +33

We study the stellar mass function (SMF) of quiescent and star-forming galaxies and its dependence on morphology in 10 redshift bins at using the COSMOS2025 catalog bui…

astro-ph.GA2025★ 6 cited

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…

astro-ph.GA2025★ 5 cited

COSMOS Web: Morphological quenching and size-mass evolution of brightest group galaxies from z = 3.7

Ghassem Gozaliasl, Lilan Yang, Jeyhan Kartaltepe +47

We present a comprehensive study of the structural evolution of Brightest Group Galaxies (BGGs) from redshift to using the \textit{James Webb Space Telesc…

astro-ph.CO2025★ 10 cited

Euclid Quick Data Release (Q1). First detections from the galaxy cluster workflow

Euclid Collaboration, S. Bhargava, C. Benoist +351

The first survey data release by the Euclid mission covers approximately in the Euclid Deep Fields to the same depth as the Euclid Wide Survey. This paper show…

astro-ph.GA2025★ 12 cited

The COSMOS-Web deep galaxy group catalog up to

Greta Toni, Ghassem Gozaliasl, Matteo Maturi +41

Galaxy groups with and up to a few tens of members are the most common galaxy environment, marking the transition between field and massive clu…

astro-ph.GA2024★ 9 cited

COSMOS Brightest Group Galaxies -- III: Evolution of stellar ages

G. Gozaliasl, A. Finoguenov, A. Babul +15

The unique characteristics of the brightest group galaxies (BGGs) link the evolutionary continuum between galaxies like the Milky Way and more massive BCGs in dense clusters. This…

astro-ph.CO2023★ 11 cited

AMICO-COSMOS galaxy cluster and group catalogue up to : Sample properties and X-ray counterparts

Greta Toni, Matteo Maturi, Alexis Finoguenov +2

We present a new galaxy cluster search in the COSMOS field through the use of the Adaptive Matched Identifier of Clustered Objects (AMICO). We produced a new cluster and group cata…