Weak lensing constraints on the stellar-to-halo mass relation of galaxy groups with simulation-informed scatter
arXiv:2411.03152 · doi:10.1051/0004-6361/202452892
Abstract
Understanding the scaling relation between baryonic observables and dark matter halo properties is crucial not only for studying galaxy formation and evolution, but also for deriving accurate cosmological constraints from galaxy surveys. In this paper, we constrain the stellar-to-halo mass relation of galaxy groups identified by the Galaxy and Mass Assembly survey, using weak lensing signals measured by the Kilo-Degree Survey. We compare our measured scaling relation with predictions from the FLAMINGO hydrodynamical simulations and the L-Galaxies semi-analytical model. We find a general agreement between our measurements and simulation predictions for halos with masses , but observe slight discrepancies with the FLAMINGO simulations at lower halo masses. We explore improvements to the current halo model framework by incorporating simulation-informed scatter in the group stellar mass distribution as a function of halo mass. We find that including a simulation-informed scatter model tightens the constraints on scaling relations, despite the current data statistics being insufficient to directly constrain the variable scatter. We also test the robustness of our results against different statistical models of miscentring effects from selected central galaxies. We find that accounting for miscentring is essential, but our current measurements do not distinguish among different miscentring models.
19 pages, 14 figures, 5 tables, minor revisions to match the final published version
References in corpus (28)
- The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
- Introducing the Illustris Project: Simulating the coevolution of dark and visible matter in the Universe
- Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
- Introducing the Illustris Project: the evolution of galaxy populations across cosmic time
- Euclid. I. Overview of the Euclid mission
- The Canadian Cluster Comparison Project: detailed study of systematics and updated weak lensing masses
- Galaxy Groups in the SDSS DR4: II. halo occupation statistics
- The fourth data release of the Kilo-Degree Survey: ugri imaging and nine-band optical-IR photometry over 1000 square degrees
- Systematics in the X-ray Cluster Mass Estimators
- The FLAMINGO project: cosmological hydrodynamical simulations for large-scale structure and galaxy cluster surveys
- Galaxy And Mass Assembly (GAMA): Data Release 4 and the z < 0.1 total and z < 0.08 morphological galaxy stellar mass functions
- Analytic models of plausible gravitational lens potentials
- Large-scale dark matter simulations
- Dark matter halo properties of GAMA galaxy groups from 100 square degrees of KiDS weak lensing data
- The galaxy-halo connection from a joint lensing, clustering and abundance analysis in the CFHTLenS/VIPERS field
- Hydrodynamical simulations of the galaxy population: enduring successes and outstanding challenges
- SWIFT: A modern highly-parallel gravity and smoothed particle hydrodynamics solver for astrophysical and cosmological applications
- Galaxy and Mass Assembly (GAMA): The halo mass of galaxy groups from maximum-likelihood weak lensing
- Dark Energy Survey Year 1 Results: Calibration of Cluster Mis-centering in the redMaPPer Catalogs
- KiDS-1000: cosmic shear with enhanced redshift calibration
- The eROSITA Final Equatorial-Depth Survey (eFEDS): X-ray Properties and Scaling Relations of Galaxy Clusters and Groups
- KiDS-1000: Cosmology with improved cosmic shear measurements
- KiDS-Legacy calibration: unifying shear and redshift calibration with the SKiLLS multi-band image simulations
- Weak lensing in the Horizon-AGN simulation lightcone. Small scale baryonic effects
- Constraining the masses of high-redshift clusters with weak lensing: Revised shape calibration testing for the impact of stronger shears and increased blending
- How to Interpret Measurements of Diffuse Light in Stacked Observations of Groups and Clusters of Galaxies
- Chandra follow up of the Hectospec Cluster Survey: Comparison of Caustic and Hydrostatic Masses and Constraints on the Hydrostatic Bias
- MaNGA DynPop -- IV. Stacked total density profile of galaxy groups and clusters from combining dynamical models of integral-field stellar kinematics and galaxy-galaxy lensing