The clustering of radio galaxies at z~0.55 from the 2SLAQ LRG survey

Abstract

We examine the clustering properties of low-power radio galaxies at redshift 0.4<z<0.8, using data from the 2SLAQ Luminous Red Galaxy (LRG) survey. We find that radio-detected LRGs (with optical luminosities of 3-5L* and 1.4GHz radio powers between 1e24 and 1e26 W/Hz) are significantly more clustered than a matched sample of radio-quiet LRGs with the same distribution in optical luminosity and colour. The measured scale length of the 2pt auto-correlation function, r0, is 12.3+/-1.2 1/h Mpc and 9.02+/-0.52 1/h Mpc for the radio-detected and radio-quiet samples respectively. Using the halo model framework we demonstrate that the radio-loud LRGs have typical halo masses of 10.1+/-1.4 x10^13 1/h M_sun compared to 6.44+/-0.32 x10^13 1/h M_sun for the radio-quiet sample. A model in which the radio-detected LRGs are almost all central galaxies within haloes provides the best fit, and we estimate that at least 30% of LRGs with the same clustering amplitude as the radio-detected LRGs are currently radio-loud. Our results imply that radio-loud LRGs typically occupy more massive haloes than other LRGs of the same optical luminosity, so the probability of finding a radio-loud AGN in a massive galaxy at z~0.55 is influenced by the halo mass in addition to the dependence on optical luminosity. If we model the radio-loud fraction of LRGs, F_rad, as a function of halo mass M, then the data are well-fitted by a power law of the form F_rad \propto M^(0.65+/-0.23). The relationship between radio emission and clustering strength could arise either through a higher fuelling rate of gas onto the central black holes of galaxies in the most massive haloes (producing more powerful radio jets) or through the presence of a denser IGM (providing a more efficient working surface for the jets, thus boosting their radio luminosity).

arXiv commentAccepted for publication in MNRAS

References in corpus (36)

• The Sloan Digital Sky Survey: Technical Summary
• The Structure of Cold Dark Matter Halos
• Simulating the joint evolution of quasars, galaxies and their large-scale distribution
• The many lives of active galactic nuclei: cooling flows, black holes and the luminosities and colours of galaxies
• Large scale bias and the peak background split
• The broken hierarchy of galaxy formation
• The 2dF Galaxy Redshift Survey: Spectra and redshifts
• Halo Models of Large Scale Structure
• Analytic model for galaxy and dark matter clustering
• Halo occupation numbers and galaxy bias
• The Halo Occupation Distribution: Towards an Empirical Determination of the Relation Between Galaxies and Mass
• The host galaxies of radio-loud AGN: mass dependencies, gas cooling and AGN feedback
• How Many Galaxies Fit in a Halo? Constraints on Galaxy Formation Efficiency from Spatial Clustering
• The relation between accretion rate and jet power in X-ray luminous elliptical galaxies
• Spatial correlation function and pairwise velocity dispersion of galaxies: CDM models versus the Las Campanas Survey
• SUMSS: A Wide-Field Radio Imaging Survey of the Southern Sky. I. Science goals, survey design and instrumentation
• A 20cm VLA Survey of Abell Clusters of Galaxies VI. Radio/Optical Luminosity Functions
• Hot and cold gas accretion and feedback in radio-loud active galaxies
• Radiative feedback from massive black holes in elliptical galaxies. AGN flaring and central starburst fueled by recycled gas
• Radio sources in the 6dFGS: Local luminosity functions at 1.4 GHz for star-forming galaxies and radio-loud AGN
• Deriving the Nonlinear Cosmological Power Spectrum and Bispectrum from Analytic Dark Matter Halo Profiles and Mass Functions
• The Colours of Satellite Galaxies in Groups and Clusters
• A sample of radio-loud AGN in the Sloan Digital Sky Survey
• AGN-controlled cooling in elliptical galaxies
• Analysis of Systematic Effects and Statistical Uncertainties in Angular Clustering of Galaxies from Early SDSS Data
• The Intermediate-Scale Clustering of Luminous Red Galaxies
• The 2dF-SDSS LRG and QSO (2SLAQ) Luminous Red Galaxy Survey
• The 2dF-SDSS LRG and QSO survey: Evolution of the Luminosity Function of Luminous Red Galaxies to z=0.6
• The 2dF-SDSS LRG and QSO survey: evolution of the clustering of luminous red galaxies since z = 0.6
• Halo masses for optically-selected and for radio-loud AGN from clustering and galaxy-galaxy lensing
• Radio Sources in Galaxy Clusters: Radial Distribution, and 1.4 GHz and K-band Bivariate Luminosity Function
• Radio galaxies in the 2SLAQ Luminous Red Galaxy Survey: I. The evolution of low-power radio galaxies to z~0.7
• Quantifying angular clustering in wide-area radio surveys
• Angular clustering in the SUMSS radio survey
• Radio galaxies in the 2SLAQ Luminous Red Galaxy survey: II. The stellar populations of radio-loud and radio-quiet LRGs
• Enabling Rapid Development of Parallel Tree Search Applications

Cited by in corpus (62)

• What Drives the Growth of Black Holes?
• Host galaxies, clustering, Eddington ratios, and evolution of radio, X-ray, and infrared-selected AGNs
• Gravity and Large-Scale Non-local Bias
• Quasar Clustering from SDSS DR5: Dependences on Physical Properties
• Cosmological Constraints from a Combination of Galaxy Clustering and Lensing -- I. Theoretical Framework
• The LABOCA Survey of the Extended Chandra Deep Field South: Clustering of submillimetre galaxies
• Galaxy clustering in the NEWFIRM Medium Band Survey: the relationship between stellar mass and dark matter halo mass at 1 < z < 2
• The evolution of active galactic nuclei and their spins
• The clustering of galaxies at z~0.5 in the SDSS-III Data Release 9 BOSS-CMASS sample: a test for the LCDM cosmology
• X-ray groups and clusters of galaxies in the Subaru-XMM Deep Field
• Clustering of obscured and unobscured quasars in the Bootes field: Placing rapidly growing black holes in the cosmic web
• Cross-Correlation of SDSS DR7 Quasars and DR10 BOSS Galaxies: The Weak Luminosity Dependence of Quasar Clustering at z~0.5
• Radio Continuum Surveys with Square Kilometre Array Pathfinders
• A Cross-Correlation Analysis of Mg II Absorption Line Systems and Luminous Red Galaxies from the SDSS DR5
• Clustering of Radio Galaxies and Quasars
• The Ubiquitous Radio Continuum Emission from the Most Massive Early-Type Galaxies
• Covariance of cross-correlations: towards efficient measures for large-scale structure
• The Halo Occupation Distribution of SDSS Quasars
• The XMM Cluster Survey: The interplay between the brightest cluster galaxy and the intra-cluster medium via AGN feedback
• The Chandra Deep Protocluster Survey: Point-Source Catalogs for a 400 ks Observation of the z = 3.09 Protocluster in SSA22
• Spectral Energy Distribution of Radio Sources in Nearby Clusters of Galaxies: Implications for Sunyaev-Zel'dovich Effect Surveys
• PRIMUS + DEEP2: Clustering of X-ray, Radio and IR-AGN at z~0.7
• A Deep 1.2 mm Map of the Lockman Hole North Field
• TheHaloMod: An online calculator for the halo model
• The spatial clustering of ROSAT All-Sky Survey Active Galactic Nuclei IV. More massive black holes reside in more massive dark matter halos
• Tracing the evolution of Active Galactic Nuclei host galaxies over the last 9 Gyrs of Cosmic time
• Radio Galaxy Zoo: The Distortion of Radio Galaxies by Galaxy Clusters
• Galaxy and Mass Assembly (GAMA): The evolution of bias in the radio source population to z ~ 1.5
• The clustering properties of radio-selected AGN and star-forming galaxies up to redshifts z~3
• The Halo Occupation Distribution of X-ray-Bright Active Galactic Nuclei: A Comparison with Luminous Quasars
• Probing the Radio Loud/Quiet AGN dichotomy with quasar clustering
• Galaxy And Mass Assembly (GAMA): The environments of high- and low- excitation radio galaxies
• Towards Accurate Modelling of Galaxy Clustering on Small Scales: Testing the Standard $\Lambda \mathrm{CDM}$ + Halo Model
• Large scale environments of z<0.4 active galaxies
• AGN environments at z<1.5 in the UKIDSS Ultra-Deep Survey
• Clustering analysis of high-redshift Luminous Red Galaxies in Stripe 82
• The environmental properties of radio-emitting AGN
• A census of radio-selected AGN on the COSMOS field and of their FIR properties
• On the occupation of X-ray selected galaxy groups by radio AGN since z=1.3
• Evidence for Merger-Driven Activity in the Clustering of High Redshift Quasars
• Non-Gaussianity of secondary anisotropies from ACTPol and Planck
• An Improved Statistical Point-Source Foreground Model for the Epoch of Reionization
• A Direct Measurement of the Mean Occupation Function of Quasars: Breaking Degeneracies between Halo Occupation Distribution Models
• Satellites of Radio AGN in SDSS: Insights into AGN Triggering and Feedback
• The Clustering Of Galaxies Around Radio-Loud AGNs
• The Halo Occupation Distribution of Obscured Quasars: Revisiting the Unification Model
• Evolution in the clustering strength of radio galaxies
• Evolution of the Most Massive Galaxies to z ~ 0.6: II. The link between radio AGN activity and star formation
• The Chandra COSMOS Legacy Survey: clustering dependence of Type 2 AGN on host galaxy properties
• Clustering of gamma-ray selected 2LAC Fermi Blazars
• Clustering of Extremely Red Objects in Elais-N1 from the UKIDSS DXS with optical photometry from Pan-STARRS1 and Subaru
• The Dark Matter Haloes and Host Galaxies of MgII Absorbers at z~1
• Early Science Result from the Japanese Virtual Observatory: AGN and Galaxy Clustering at z = 0.3 to 3.0
• Quasars at intermediate redshift are not special; but they are often satellites
• Impact of radio sources and cosmic infrared background on thermal Sunyaev-Zel'dovich - gravitational lensing cross correlation
• Impact of extragalactic point sources on the low-frequency sky spectrum and cosmic dawn global 21-cm measurements
• Scaling of the 1-halo terms with bias
• Mean Occupation Function of High Redshift Quasars from the Planck Cluster Catalog
• Counting quasar--radio source pairs to derive the millijansky radio luminosity function and clustering strength to z=3.5
• The non-thermal secondary CMB anisotropies from a cosmic distribution of radio galaxy lobes
• MIGHTEE: The dark matter haloes, duty cycle and mechanical feedback from radio-AGN up to $z\sim 2.5$
• Hosts and environments: a (large-scale) radio history of AGN and star-forming galaxies