Understanding X-ray and optical selection of galaxy clusters: A comparison of the XXL and CAMIRA cluster catalogues obtained in the common XXL-HSC SSP area

Abstract

Large samples of galaxy clusters provide knowledge of both astrophysics in the most massive virialised environments and the properties of the cosmological model that defines our Universe. However, an important issue that affects the interpretation of galaxy cluster samples is the role played by the selection waveband and the potential for this to introduce a bias in the physical properties of clusters thus selected. We aim to investigate waveband-dependent selection effects in the identification of galaxy clusters by comparing the X-ray Multi-Mirror (XMM) Ultimate Extra-galactic Survey (XXL) and Subaru Hyper Suprime-Cam (HSC) CAMIRA cluster samples identified from a common 22.6 deg2 sky area. We compare 150 XXL and 270 CAMIRA clusters in a common parameter space defined by X-ray aperture brightness and optical richness. We find that 71/150 XXL clusters are matched to the location of a CAMIRA cluster, the majority of which (67/71) display richness values N>15 that exceed the CAMIRA catalogue richness threshold. We find that 67/270 CAMIRA clusters are matched to the location of an XXL cluster (defined within XXL as an extended X-ray source). Of the unmatched CAMIRA clusters, the majority display low X-ray fluxes consistent with the lack of an XXL counterpart. However, a significant fraction (64/107) CAMIRA clusters that display high X-ray fluxes are not asociated with an extended source in the XXL catalogue. We demonstrate that this disparity arises from a variety of effects including the morphological criteria employed to identify X-ray clusters and the properties of the XMM PSF.

arXiv comment15 pages, 14 figures, MNRAS accepted

References in corpus (57)

• Cosmological Parameters from Observations of Galaxy Clusters
• The Hyper Suprime-Cam SSP Survey: Overview and Survey Design
• redMaPPer I: Algorithm and SDSS DR8 Catalog
• A New Method For Galaxy Cluster Detection I: The Algorithm
• First Data Release of the Hyper Suprime-Cam Subaru Strategic Program
• Second Data Release of the Hyper Suprime-Cam Subaru Strategic Program
• Photometric Redshifts for Hyper Suprime-Cam Subaru Strategic Program Data Release 1
• Planck 2015 results. XXVII. The Second Planck Catalogue of Sunyaev-Zeldovich Sources
• Galaxy clusters discovered with a Sunyaev-Zel'dovich effect survey
• The Atacama Cosmology Telescope: Sunyaev Zel'dovich Selected Galaxy Clusters at 148 GHz in the 2008 Survey
• The Palomar Distant Cluster Survey: I. The Cluster Catalog
• Galaxy clusters discovered via the Sunyaev-Zel'dovich effect in the first 720 square degrees of the South Pole Telescope survey
• The XXL Survey: I. Scientific motivations - XMM-Newton observing plan - Follow-up observations and simulation programme
• The ROSAT-ESO Flux Limited X-Ray (REFLEX) Galaxy Cluster Survey I: The Construction of the Cluster Sample
• The first-year shear catalog of the Subaru Hyper Suprime-Cam SSP Survey
• Searching for Cool Core Clusters at High redshift
• A cluster finding algorithm based on the multiband identification of red sequence galaxies
• An optically-selected cluster catalog at redshift 0.1<z<1.1 from the Hyper Suprime-Cam Subaru Strategic Program S16A data
• First Results On Shear-Selected Clusters From the Deep Lens Survey: Optical Imaging, Spectroscopy, and X-ray Followup
• redMaPPer II: X-ray and SZ Performance Benchmarks for the SDSS Catalog
• LoCuSS: the connection between brightest cluster galaxy activity, gas cooling and dynamical disturbance of X-ray cluster cores
• The XXL Survey. II. The bright cluster sample: catalogue and luminosity function
• The bright-star masks for the HSC-SSP survey
• The fraction of cool-core clusters in X-ray vs. SZ samples using Chandra observations
• The XXL Survey XX: The 365 cluster catalogue
• The cool core state of Planck SZ-selected clusters versus X-ray selected samples: evidence for cool core bias
• Extended Hot Halos Around Isolated Galaxies Observed in the ROSAT All-Sky Survey
• The XMM Large Scale Structure survey: The X-ray pipeline and survey selection function
• Weak-Lensing Mass Calibration of ACTPol Sunyaev-Zel'dovich Clusters with the Hyper Suprime-Cam Survey
• AMICO galaxy clusters in KiDS-DR3: sample properties and selection function
• Closing the Loop: A Self-Consistent Model of Optical, X-ray, and SZ Scaling Relations for Clusters of Galaxies
• Comparing Masses in Literature (CoMaLit)-I. Bias and scatter in weak lensing and X-ray mass estimates of clusters
• Weak lensing survey of galaxy clusters in the CFHTLS Deep
• Searching for dark matter halos in the Suprime-Cam 2 sq deg field
• Dark Energy Survey Year 1 Results: Calibration of Cluster Mis-centering in the redMaPPer Catalogs
• Source Selection for Cluster Weak Lensing Measurements in the Hyper Suprime-Cam Survey
• Weak lensing Analysis of X-Ray-selected XXL Galaxy Groups and Clusters with Subaru HSC Data
• CoMaLit III. Literature Catalogs of weak Lensing Clusters of galaxies (LC^2)
• Distant Cluster Hunting II: A comparison of X-ray and optical cluster detection techniques and catalogs from the ROX Survey
• The cosmological analysis of X-ray cluster surveys: II- Application of the CR-HR method to the XMM archive
• A large sample of shear selected clusters from the Hyper Suprime-Cam Subaru Strategic Program S16A wide field mass maps
• HICOSMO - Cosmology with a complete sample of galaxy clusters: II. Cosmological results
• The XMM-LSS survey: the Class 1 cluster sample over the extended 11 deg${}^2$ and its spatial distribution
• CoMaLit-V. Mass forecasting with proxies. Method and application to weak lensing calibrated samples
• CoMaLit - II. The scaling relation between mass and Sunyaev-Zel'dovich signal for Planck selected galaxy clusters
• The XXL Survey: XXVII. The 3XLSS point source catalogue
• XXL Survey groups and clusters in the Hyper Suprime-Cam Survey. Scaling relations between X-ray properties and weak lensing mass
• The XXL survey XV: Evidence for dry merger driven BCG growth in XXL-100-GC X-ray clusters
• Spectroscopic Quantification of Projection Effects in the SDSS redMaPPer Galaxy Cluster Catalogue
• The X-CLASS - redMaPPer galaxy cluster comparison: I. Identification procedures
• The XXL survey XXXV. The role of cluster mass in AGN activity
• A New X-ray Selected Sample of Very Extended Galaxy Groups from the ROSAT All-Sky Survey
• Euclid preparation III. Galaxy cluster detection in the wide photometric survey, performance and algorithm selection
• The XXL Survey XXIV. The final detection pipeline
• The XXL Survey XIX. A realistic population of simulated X-ray AGN: Comparison of models with observations
• X-ray versus infrared selection of distant galaxy clusters: A case study using the XMM-LSS and SpARCS cluster samples
• The XXL Survey: XXXVIII. Scatters and correlations of X-ray proxies in the bright XXL cluster sample

Cited by in corpus (12)

• The eROSITA Final Equatorial-Depth Survey (eFEDS): Identification and characterization of the counterparts to the point-like sources
• The SRG/eROSITA all-sky survey: Cosmology constraints from cluster abundances in the western Galactic hemisphere
• The eROSITA Final Equatorial-Depth Survey (eFEDS): Optical confirmation, redshifts, and properties of the cluster and group catalog
• The eROSITA Final Equatorial-Depth Survey (eFEDS): X-ray properties of Subaru optically-selected clusters
• The eROSITA Final Equatorial-Depth Survey (eFEDS): A complete census of X-ray properties of Subaru Hyper Suprime-Cam weak lensing shear-selected clusters in the eFEDS footprint
• A comparison of millisecond pulsar populations between globular clusters and the Galactic field
• Miscentering of Optical Galaxy Clusters Based on Sunyaev-Zeldovich Counterparts
• The XXL Survey XLV. Linking the ages of optically selected groups to their X-ray emission
• Atacama Large Aperture Submillimeter Telescope (AtLAST) Science: Resolving the Hot and Ionized Universe through the Sunyaev-Zeldovich effect
• HSC-XXL : Baryon budget of the 136 XXL Groups and Clusters
• The eROSITA Final Equatorial-Depth Survey (eFEDS): X-ray stacking analysis of Subaru's optically selected clusters spanning low richness regime
• Catalogs of optically-selected clusters and photometric luminous red galaxies from the Hyper Suprime-Cam Subaru Strategic Program final year dataset