The evolution of high-density cores of the BOSS Great Wall superclusters (original) (raw)

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BOSS Great Wall: morphology, luminosity, and mass Cover Page

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Discovery of a massive supercluster system atz~ 0.47 Cover Page

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The Sloan Great Wall. Morphology and Galaxy Content Cover Page

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Structure and dynamics of the supercluster of galaxies SC0028-0005 Cover Page

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The dynamical evolution of stellar superclusters Cover Page

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The clustering of massive galaxies at z~ 0 5 from the first semester of BOSS data Cover Page

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Superclusters of galaxies in the 2dF redshift survey Cover Page

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Superclusters of galaxies in the 2dF redshift survey. 3. The properties of galaxies in superclusters Cover Page

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BOSS DR12 combined galaxy sample: The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: On the measurement of growth rate using galaxy correlation functions Cover Page

Supercluster A2142 and collapse in action: infalling and merging groups and galaxy transformations

Astronomy & Astrophysics, 2018

Context. Superclusters with collapsing cores represent dynamically evolving environments for galaxies, galaxy groups, and clusters.Aims. We study the dynamical state and properties of galaxies and groups in the supercluster SCl A2142 that has a collapsing core, to understand its possible formation and evolution.Methods. We find the substructure of galaxy groups using normal mixture modelling. We have used the projected phase space (PPS) diagram, spherical collapse model, clustercentric distances, and magnitude gap between the brightest galaxies in groups to study the dynamical state of groups and to analyse group and galaxy properties. We compared the alignments of groups and their brightest galaxies with the supercluster axis.Results. The supercluster core has a radius of about 8h−1Mpc and total massMtot≈ 2.3 × 1015h−1M⊙and is collapsing. Galaxies in groups on the supercluster axis have older stellar populations than off-axis groups, with median stellar ages 4 − 6 and < 4 Gyr, c...

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Supercluster A2142 and collapse in action: infalling and merging groups and galaxy transformations Cover Page