The role of environment in galaxy evolution in the SERVS Survey I: density maps and cluster candidates

Abstract

We use photometric redshifts derived from new $u$-band through 4.5$\mu$m Spitzer IRAC photometry in the 4.8\,deg${}^2$ of the XMM-LSS field to construct surface density maps in the redshift range 0.1-1.5. Our density maps show evidence for large-scale structure in the form of filaments spanning several tens of Mpc. Using these maps, we identify 339 overdensities that our simulated lightcone analysis suggests are likely associated with dark matter haloes with masses, $M_{\mathrm{halo}}$, log($M_{\mathrm{halo}}/M_{\odot })>$13.7. From this list of overdensities we recover 43 of 70 known X-ray detected and spectroscopically confirmed clusters. The missing X-ray clusters are largely at lower redshifts and lower masses than our target log($M_{\mathrm{halo}}/M_{\odot })>$13.7. The bulk of the overdensities are compact, but a quarter show extended morphologies which include likely projection effects, clusters embedded in apparent filaments as well as at least one potential cluster merger (at $z\sim 1.28$). The strongest overdensity in our highest redshift slice (at $z\sim 1.5$) shows a compact red galaxy core potentially implying a massive evolved cluster.

26 pages, 12 figures, accepted for publication in ApJ

References in corpus (14)

• Cosmic Star Formation History
• Mass and environment as drivers of galaxy evolution in SDSS and zCOSMOS and the origin of the Schechter function
• EAZY: A Fast, Public Photometric Redshift Code
• The VIMOS Ultra-Deep Survey: ~10,000 galaxies with spectroscopic redshifts to study galaxy assembly at early epochs 2<z<~6
• The speed of the `bullet' in the merging galaxy cluster 1E0657-56
• The VIMOS Public Extragalactic Redshift Survey (VIPERS): Galaxy segregation inside filaments at $z\simeq 0.7$
• A Comparative Study of Density Field Estimation for Galaxies: New Insights into the Evolution of Galaxies with Environment in COSMOS out to z~3
• Photometric redshifts for the next generation of deep radio continuum surveys - I: Template fitting
• HELP: A catalogue of 170 million objects, selected at 0.36-4.5 $\mu$m, from 1270 deg.${}^2$ of prime extragalactic fields
• XMM-LSS discovery of a z=1.22 galaxy cluster
• The XMM-LSS survey: the Class 1 cluster sample over the extended 11 deg${}^2$ and its spatial distribution
• An Application of Multi-band Forced Photometry to One Square Degree of SERVS: Accurate Photometric Redshifts and Implications for Future Science
• Spectroscopic follow-up of a cluster candidate at z = 1.45
• Environmental dependence of the galaxy stellar mass function in the Dark Energy Survey Science Verification Data

Cited by in corpus (10)

• A Spitzer survey of Deep Drilling Fields to be targeted by the Vera C. Rubin Observatory Legacy Survey of Space and Time
• Protocluster detection in simulations of HSC-SSP and the 10-year LSST forecast, using PCcones
• Questioning Planck-selected star-forming high-redshift galaxy protoclusters and their fate
• The Spitzer Coverage of HSC-Deep with IRAC for Z studies (SHIRAZ) I: IRAC mosaics
• Cluster candidates with massive quiescent galaxies at $z\sim 2$
• $Spitzer$-selected $z>1.3$ protocluster candidates in the LSST Deep Drilling Fields
• Effects of Environment on the Size Evolution of Quiescent Galaxies: Comparing Galaxies in Clusters and in the Field at Two Rest-frame Wavelengths
• The environment of QSO triplets at 1 $\lesssim$ z $\lesssim$ 1.5
• Lack of influence of the environment in the earliest stages of massive galaxy formation
• Properties of Polarized Radio Sources in the Wide Chandra Deep Field South from 2 to 4GHz