A systematic search for galaxy proto-cluster cores at z ∼ 2

@article{Ando2020ASS,
  title={A systematic search for galaxy proto-cluster cores at z ∼ 2},
  author={Makoto Ando and Kazuhiro Shimasaku and Rieko Momose},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2020}
}
A proto-cluster core is the most massive dark matter halo (DMH) in a given proto-cluster. To reveal the galaxy formation in core regions, we search for proto-cluster cores at z ∼ 2 in ${\sim}1.5\, \mathrm{deg}^{2}$ of the COSMOS field. Using pairs of massive galaxies [log (M*/M⊙) ≥ 11] as tracers of cores, we find 75 candidate cores, among which 54 per cent are estimated to be real. A clustering analysis finds that these cores have an average DMH mass of $2.6_{-0.8}^{+0.9}\times 10^{13… 
View PDF on arXiv
6 Citations
Background Citations
2
Methods Citations
1

6 Citations

A Search for Massive Galaxy Population in a Protocluster of LAEs at z = 2.39 near the Radio Galaxy 53W002
We searched for massive galaxy population in the known large-scale high-density structure of Lyα emitters (LAEs) at z = 2.39 near the radio galaxy 53W002 by using imaging data from B,V,i′,J,H,andKs…
DETECTIFz galaxy groups in the REFINE survey – I. Group detection and quenched fraction evolution at z < 2.5
We use a large K-selected sample of 299 961 galaxies from the REFINE survey, consisting of a combination of data from three of the deepest near-infrared surveys, UKIDSS UDS, COSMOS/UltraVISTA, and…
Protocluster detection in simulations of HSC–SSP and the 10-yr LSST forecast, using PCcones
The progenitors of present-day galaxy clusters give important clues about the evolution of the large scale structure, cosmic mass assembly, and galaxy evolution. Simulations are a major tool for…
Comprehensive Gas Characterization of a z = 2.5 Protocluster: A Cluster Core Caught in the Beginning of Virialization?
In order to connect galaxy clusters to their progenitor protoclusters, we must constrain the star formation histories within their member galaxies and the timescale of virial collapse. In this paper…
The Corona Borealis supercluster: connectivity, collapse, and evolution
We present a study of the Corona Borealis (CB) supercluster. We determined the high-density cores of the CB and the richest galaxy clusters in them, and studied their dynamical state and galaxy…
Accelerated Galaxy Growth and Environmental Quenching in a Protocluster at z = 3.24
We present a multiwavelength study of galaxies around D4UD01, a spectroscopically confirmed protocluster at z = 3.24, to investigate environmental trends. 450 galaxies are selected based on K S band…

References

SHOWING 1-10 OF 93 REFERENCES
Galaxy Proto-Cluster Cores at z ∼
  • 2017
Statistical analysis of catalogs of extragalactic objects. VI. The galaxy distribution in the Jagellonian field
Spectroscopic confirmation of a mature galaxy cluster at a redshift of 2
TLDR
Optical spectroscopic observations of XLSSC 122 are reported and photometry is used to determine a mean, dust-free stellar age of 2.98 billion years, indicating that star formation commenced in these galaxies at a mean redshift of 12, when the Universe was only 370 million years old.
Large-scale Structures in the CANDELS Fields: The Role of the Environment in Star Formation Activity
We present a robust method, weighted von Mises kernel density estimation, along with boundary correction to reconstruct the underlying number density field of galaxies. We apply this method to…
The Roles of Mass and Environment in the Quenching of Galaxies. II.
We study the roles of stellar mass and environment in quenching the star formation activity of a large set of simulated galaxies by taking advantage of an analytic model coupled to the merger tree…
On the Infall of Matter into Clusters of Galaxies and Some Effects on Their Evolution
Statistical analysis of catalogs of extragalactic objects. VII. Two- and three-point correlation functions for the high-resolution Shane-Wirtanen catalog of galaxies
We present estimates of the two- and three-point angular correlation functions for the high-resolution (10') Shane-Wirtanen catalog of galaxies. Special attention is given to statistical corrections…
Galaxy morphology in rich clusters: Implications for the formation and evolution of galaxies
A study of the galaxy populations in 55 rich clusters is presented together with a discussion of the implications for the formation and/or evolution of different morphological types. A well-defined…
Bias and variance of angular correlation functions
We present a general method for calculating the bias and variance of estimators for w(θ) based on galaxy-galaxy (DD), random-random (RR), and galaxy-random (DR) pair counts and describe a procedure…
The clustering of faint galaxies
Deep images of the sky reveal a population of faint blue objects that may be protogalaxies at redshifts of more than approximately 1. The faint galaxies are surprisingly weakly clustered. There are…
...
...