25 citations · 150 across the 18 of their papers we have counts for
21 papers
Beyond the Disc--Spheroid Dichotomy at : Evidence for a Morphological Indeterminacy Regime from JWST
Igor Kolesnikov, Reinaldo Ramos de Carvalho, Jeong Hwan Lee +3
Galaxy morphology is a fundamental tracer of galaxy assembly, but its characterization becomes increasingly uncertain in the early Universe. We investigate morphological classifica…
The assembly of bulge-dominated galaxies: two evolutionary channels traced through morphology, kinematics, and environment with a hybrid classification pipeline
R. Flores-Freitas, R. R. de Carvalho, K. V. Nedkova +3
We investigate the physical origin of the bimodality in bulge-dominated galaxies, originally identified by Sampaio et al. (2025), by combining non-parametric morphological metrics,…
Star formation and morphological trends in the Antlia cluster: Probing environmental influence out to 5R200
Ciria Lima-Dias, Antonela Monachesi, Gissel P. Montaguth +48
Galaxy evolution in dense environments such as clusters is strongly affected by environmental processes that can alter both morphology and star formation activity. We investigate t…
Fishing for Jellyfish Galaxies: Exploring ram-pressure stripping with crowd science
C. Bellhouse, Y. L. Jaffé, J. P. Crossett +13
Aims: We present the first results of Fishing for Jellyfish Galaxies, a pilot citizen-science project using Zooniverse to identify galaxies undergoing ram-pressure stripping (RPS).…
Caught in the web: galaxy mergers along cosmic filaments
Carolina Dulcien, Yara L. Jaffe, Jacob P. Crossett +31
Galaxy clusters grow through the accretion of galaxies from groups, filaments, and other clusters. During this process, galaxies may undergo pre-processing in lower-density environ…
The role of supercluster filaments in shaping galaxy clusters
Raúl Baier-Soto, Yara Jaffé, Alexis Finoguenov +44
In a hierarchical CDM Universe, cosmic filaments serve as the primary channels for matter accretion into galaxy clusters, influencing the shape of their dark matter halos. We in…
Targeting cluster galaxies for the 4MOST CHANCES Low-z sub-survey with photometric redshifts
Hugo Méndez-Hernández, Ciria Lima-Dias, Antonela Monachesi +54
The evolution of galaxies is shaped by both internal processes and their external environments. Galaxy clusters and their surroundings provide ideal laboratories to study these eff…
Morphology across cosmic time: assessing the evolution and interplay of disk and bulge-dominated galaxies in the CANDELS survey
Vitor M. Sampaio, Igor Kolesnikov, Reinaldo R. de Carvalho +2
We investigate the redshift evolution of disk and bulge-dominated galaxies using a mass-complete sample of 14,000 galaxies from the CANDELS survey, selected with $H_{\rm mag}…
The Evolution of central and satellite galaxies in the local universe: Insights from galactic archeology
V. M. Sampaio
This thesis investigates the evolution of galaxies in diverse environments, utilizing Sloan Digital Sky Survey (SDSS) data to explore the impact of environmental richness on centra…
Galaxy Morphology in CANDELS: Addressing Evolutionary Changes Across with Hybrid Classification Approach
I. Kolesnikov, V. M. Sampaio, R. R. de Carvalho +1
Morphological classification of galaxies becomes increasingly challenging with redshift. We apply a hybrid supervised-unsupervised method to classify galaxies in the…
Exploring Galaxy Evolution Time-Scales in Clusters: Insights from the Projected Phase Space
V. M. Sampaio, R. R. de Carvalho, A. Aragón-Salamanca +3
Galaxies infalling into clusters undergo both star-formation quenching and morphological transformation due to environmental effects. We investigate these processes and their times…
Satellite quenching and morphological transformation of galaxies in groups and clusters
M. Oxland, L. C. Parker, R. R. de Carvalho +1
We investigate the role that dense environments have on the quenching of star formation and the transformation of morphology for a sample of galaxies selected from the Sloan Digita…
Unveiling Galaxy Morphology through an Unsupervised-Supervised Hybrid Approach
I. Kolesnikov, V. M. Sampaio, R. R. de Carvalho +4
Galaxy morphology offers significant insights into the evolutionary pathways and underlying physics of galaxies. As astronomical data grows with surveys such as Euclid and Vera C.…
Where have all the low-metallicity galaxies gone? Tracing evolution in the mass--metallicity plane since a redshift of 0.7
Shuang Zhou, Alfonso Aragón-Salamanca, Michael Merrifield +1
Even over relatively recent epochs, galaxies have evolved significantly in their location in the mass-metallicity plane, which must be telling us something about the latter stages…
The co-evolution of strong AGN and central galaxies in different environments
V. M. Sampaio, A. Aragón-Salamanca, M. R. Merrifield +3
We exploit a sample of 80,000 SDSS central galaxies to investigate the effect of AGN feedback on their evolution. We trace the demographics of optically-selected AGN (Seyferts) as…
Exploring the stellar populations of backsplash galaxies
Ignacio Ferreras, Asmus Böhm, Keiichi Umetsu +2
Backsplash galaxies are those that traverse and overshoot cluster cores as they fall into these structures. They are affected by environment, and should stand out in contrast to th…
Quenching, bursting and galaxy shapes: colour transformation as a function of morphology
Camila de Sá-Freitas, Thiago Signorini Gonçalves, Reinaldo R. de Carvalho +6
Different mechanisms for quenching star formation in galaxies are commonly invoked in the literature, but the relative impact of each one at different cosmic epochs is still unknow…
Unveiling the internal structure of Hercules supercluster
R. Monteiro-Oliveira, D. F. Morell, V. M. Sampaio +2
We have investigated the structure of the Hercules supercluster (SCL160) based on data originally extracted from the Sloan Digital Sky Survey SDSS-DR7. We have traced the mass dist…
From Blue Cloud to Red Sequence: Evidence of Morphological Transition Prior to Star Formation Quenching
V. M. Sampaio, R. R. de Carvalho, I. Ferreras +2
We present a study of a sample of 254 clusters from the SDSS-DR7 Yang Catalog and an auxiliary sample of field galaxies to perform a detailed investigation on how galaxy quenching…
Investigating the Projected Phase Space of Gaussian and Non-Gaussian Clusters
V. M. Sampaio, R. R. de Carvalho, I. Ferreras +3
By way of the projected phase-space (PPS), we investigate the relation between galaxy properties and cluster environment in a subsample of groups from the Yang Catalog. The sample…
Clues on the history of early-type galaxies from SDSS spectra and GALEX photometry
Ariel Werle, Roberto Cid Fernandes, Natalia Vale Asari +10
Stellar population studies of early-type galaxies (ETGs) based on their optical stellar continuum suggest that these are quiescent systems. However, emission lines and ultraviolet…