3 papers
astro-ph.CO2026
Calibrating optical galaxy cluster projection effects with sparse spectroscopic samples: A clustering redshift approach
Lei Yang, Hao-Yi Wu, Tesla Jeltema +3
Wide-field optical imaging surveys are efficient at identifying galaxy clusters, but optically identified clusters suffer from projection effects--physically unassociated galaxies…
astro-ph.CO2025
Association between optically identified galaxy clusters and the underlying dark matter halos
DES Collaboration, Shulei Cao, Hao-Yi Wu +10
Clusters of galaxies trace massive dark matter halos in the Universe, but they can include multiple halos projected along lines of sight. As a case study, we quantify the propertie…
astro-ph.CO2025
Optical galaxy cluster mock catalogs with realistic projection effects: Validations with the SDSS clusters
Andy Lee, Hao-Yi Wu, Andrés N. Salcedo +9
Galaxy clusters identified in optical imaging surveys suffer from projection effects: Physically unassociated galaxies along a cluster's line of sight can be counted as its members…