Author ORCID Identifier
Document Type
Article
Publication Date
12-1-2016
Abstract
The Candidate Cluster and Protocluster Catalog (CCPC) is a list of objects at redshifts z > 2 composed of galaxies with spectroscopically confirmed redshifts that are coincident on the sky and in redshift. These protoclusters are identified by searching for groups in volumes corresponding to the expected size of the most massive protoclusters at these redshifts. In CCPC1 we identified 43 candidate protoclusters among 14,000 galaxies between 2.74 < z < 3.71. Here we expand our search to more than 40,000 galaxies with spectroscopic redshifts z > 2.00, resulting in an additional 173 candidate structures. The most significant of these are 36 protoclusters with overdensities δ gal > 7. We also identify three large proto-supercluster candidates containing multiple protoclusters at z = 2.3, 3.5 and z = 6.56. Eight candidates with N ≥ 10 galaxies are found at redshifts z > 4.0. The last system in the catalog is the most distant spectroscopic protocluster candidate known to date at z = 6.56.
Keywords
galaxies: clusters: general, galaxies: high-redshift supporting material: figure set, machine-readable tables
Language
English
Publication Title
Astrophysical Journal
Rights
© The American Astronomical Society. All rights reserved. This content is free to access, download, and share. For all other uses, you must obtain permission to reuse content: https://journals.aas.org/article-charges-and-copyright/#AAS_material
Recommended Citation
J. R. Franck and S. S. McGaugh 2016. The Candidate Cluster and Protocluster Catalog (CCPC). II. Spectroscopically Identified Structures Spanning 2 < z < 6.6. ApJ 833 15
Manuscript Version
Final Publisher Version