2021/01/29 by C. Schimd, M. Sereno
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics #Boundary (topology) #Cluster (spacecraft) #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy cluster #Mathematical analysis #Minkowski space #Morphology (biology) #Physics #Quantum mechanics #Statistical physics #Stellar, planetary, and galactic studies #astro-ph.CO
paper · pdf · doi:10.1093/mnras/stab274
12 pages, 10 figures. Accepted for publication in MNRAS
arxiv created 2021/01/29 · openalex publication_date 2021/01/29 · arxiv updated 2021/02/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
ABSTRACT Galaxy clusters exhibit a rich morphology during the early and intermediate stages of mass assembly, especially beyond their boundary. A classification scheme based on shapefinders deduced from the Minkowski functionals is examined to fully account for the morphological diversity of galaxy clusters, including relaxed and merging clusters, clusters fed by filamentary structures, and cluster-pair bridges. These configurations are conveniently treated with idealized geometric models and analytical formulas, some of which are novel. Examples from CLASH and LC2 clusters and observed cluster-pair bridges are discussed.