67 citations · 221 across the 14 of their papers we have counts for
14 papers
Inferring the Dark from the Observable: Estimating Halo Masses Using Galaxy Properties
Alice Chen, Syeda Lammim Ahad
The formation and evolution of galaxies are interconnected with that of their host halos. Given this closely related evolutionary history, it should follow that galaxy properties a…
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…
Cluster properties as a function of dynamical state in the DESI Legacy x UNIONS surveys
Syeda Lammim Ahad, Rashaad Reid, Charlie T. Mpetha +10
We investigate how the dynamical state of galaxy clusters influences their galaxy populations and mass distributions. Using photometrically selected clusters from the DESI Legacy I…
The intragroup light in KiDS+GAMA groups: A stacking analysis
S. L. Ahad, H. Hoekstra, Y. M. Bahé +4
Galaxy groups and clusters assembled through dynamical interactions of smaller systems, resulting in the formation of a diffuse stellar halo known as the intragroup or intracluster…
Insights into environmental quenching at : an enhancement of faint, low-mass passive galaxies in clusters
Harry Gully, Nina Hatch, Syeda Lammim Ahad +11
Understanding the processes that transform star-forming galaxies into quiescent ones is key to unraveling the role of environment in galaxy evolution. We present measurements of th…
Euclid preparation LXX. Forecasting detection limits for intracluster light in the Euclid Wide Survey
Euclid Collaboration, C. Bellhouse, J. B. Golden-Marx +292
The intracluster light (ICL) permeating galaxy clusters is a tracer of the cluster's assembly history, and potentially a tracer of their dark matter structure. In this work we expl…
Euclid: Early Release Observations -- The Intracluster Light of Abell 2390
A. Ellien, M. Montes, S. L. Ahad +183
Intracluster light (ICL) provides a record of the dynamical interactions undergone by clusters, giving clues on cluster formation and evolution. Here, we analyse the properties of…
Euclid: Early Release Observations -- The intracluster light and intracluster globular clusters of the Perseus cluster
M. Kluge, N. A. Hatch, M. Montes +185
We study the intracluster light (ICL) and intracluster globular clusters (ICGCs) in the nearby Perseus galaxy cluster using Euclid's EROs. By modelling the isophotal and iso-densit…
Preparing for low surface brightness science with the Vera C. Rubin Observatory: A Comparison of Observable and Simulated Intracluster Light Fractions
Sarah Brough, Syeda Lammim Ahad, Yannick M. Bahe +13
Intracluster Light (ICL) provides an important record of the interactions galaxy clusters have undergone. However, we are limited in our understanding by our measurement methods. T…
An environment-dependent halo mass function as a driver for the early quenching of cluster galaxies
Syeda Lammim Ahad, Adam Muzzin, Yannick M. Bahé +1
Many galaxies with a stellar mass () are already quenched in both galaxy clusters ( per cent) and the field ( per cent…
How to Interpret Measurements of Diffuse Light in Stacked Observations of Groups and Clusters of Galaxies
Syeda Lammim Ahad, Yannick M. Bahé, Henk Hoekstra
The diffuse light within galaxy groups and clusters provides valuable insight into the growth of massive cosmic structures. Groups are particularly interesting in this context, bec…
Ultra diffuse galaxies in the MATLAS low-to-moderate density fields
Francine R. Marleau, Rebecca Habas, Melina Poulain +10
Recent advances in deep dedicated imaging surveys over the past decade have uncovered a surprisingly large number of extremely faint low surface brightness galaxies with large phys…
Structure and morphology of the MATLAS dwarf galaxies and their central nuclei
Melina Poulain, Francine R. Marleau, Rebecca Habas +10
We present a photometric study of the dwarf galaxy population in the low to moderate density environments of the MATLAS (Mass Assembly of early-Type gaLAxies with their fine Struct…
The stellar mass function and evolution of the density profile of galaxy clusters from the Hydrangea simulations at
Syeda Lammim Ahad, Yannick M. Bahé, Henk Hoekstra +2
Galaxy clusters are excellent probes to study the effect of environment on galaxy formation and evolution. Along with high-quality observational data, accurate cosmological simulat…