activity
20232026
most citedReconsidering the dynamical states of galaxy clusters using PCA and UMAP

15 citations · 37 across the 9 of their papers we have counts for

collaborators

11 papers

astro-ph.CO2026

Imprints of Mass Accretion History on Galaxy Cluster Morphology

Kabelo Tsiane, Camille Avestruz, Elena Rasia +6

Variations in dynamical states of galaxy clusters can introduce biases and scatter in observable-mass relations. The dynamical state of a cluster is an emergent feature of its mass…

astro-ph.GA2026

Identifying backsplash galaxies using machine learning

Roan Haggar, Elizaveta Sazonova, Cameron R. Morgan +5

The galaxy population in the outskirts of a cluster contains members that have been pre-processed in groups and filaments, as well as backsplash galaxies -- those that have recentl…

astro-ph.GA2026

The Next Generation Virgo Cluster Survey (NGVS). II. A Catalog of Galaxies in the Virgo Cluster

Laura Ferrarese, Patrick Cote, Lauren A. MacArthur +51

The Next Generation Virgo Cluster Survey (NGVS) is a deep, high resolution imaging campaign that used the 1 deg MegaCam instrument on the Canada-France-Hawaii Telescope to carr…

astro-ph.CO2026

Tracing the dynamical states and mass accretion histories of galaxy clusters in IllustrisTNG

Rashaad Reid, Syeda Lammim Ahad, Roan Haggar +2

As the largest and most recently formed stage of hierarchical structure, present-day galaxy clusters are predicted to have a broad range of late-time assembly histories. This diver…

astro-ph.GA2025

No Evidence of Asymmetrically Enhanced Star Formation in Infalling Galaxies in UNIONS

Lauren M. Foster, Laura C. Parker, Stephen Gwyn +5

Ram pressure stripping is a well-known environmental quenching mechanism that removes gas from galaxies infalling into groups and clusters. In some extreme examples of ram pressure…

astro-ph.CO2025★ 5 cited

Cosmology from UNIONS weak lensing profiles of galaxy clusters

Charlie T. Mpetha, James E. Taylor, Yuba Amoura +12

Cosmological information is encoded in the structure of galaxy clusters. In Universes with less matter and larger initial density perturbations, clusters form earlier and have more…

astro-ph.CO2024★ 7 cited

The infall region as a complementary probe to cluster abundance

Charlie T. Mpetha, James E. Taylor, Yuba Amoura +1

Galaxy cluster abundance measurements provide a classic test of cosmology. They are most sensitive to the evolved amplitude of fluctuations, usually expressed as $S_8 = σ_8\sqrt{Ω_…

astro-ph.CO2024

Constraining cosmological parameters using the splashback radius of galaxy clusters

Roan Haggar, Yuba Amoura, Charlie T. Mpetha +3

Cosmological parameters such as and can be measured indirectly using various methods, including galaxy cluster abundance and cosmic shear. These measurements c…

astro-ph.GA2024★ 15 cited

Reconsidering the dynamical states of galaxy clusters using PCA and UMAP

Roan Haggar, Federico De Luca, Marco De Petris +10

Numerous metrics exist to quantify the dynamical state of galaxy clusters, both observationally and within simulations. Many of these correlate strongly with one another, but it is…

astro-ph.CO2023★ 7 cited

Halo Growth and Merger Rates as a Cosmological Test

Yuba Amoura, Nicole E. Drakos, Anael Berrouet +1

Dark matter haloes grow at a rate that depends on the value of the cosmological parameters and through the initial power spectrum and the linear growth factor. Wh…

astro-ph.GA2023★ 3 cited

Testing the Surface Brightness Fluctuation Method on Dwarf Galaxies in the COSMOS Field

Lauren M. Foster, James E. Taylor, John P. Blakeslee

Dwarf galaxies are important tracers of small-scale cosmological structure, yet much of our knowledge about these systems comes from the limited sample of dwarf galaxies within the…