The XMM-Newton wide-field survey in the COSMOS field II: X-ray data and the logN-logS

Abstract

We present the data analysis and the X-ray source counts for the first season of XMM-Newton observations in the COSMOS field. The survey covers ~2 deg^2 within the region of sky bounded by 9^h57.5^m<R.A.<10^h03.5^m; 1^d27.5^m<DEC<2^d57.5^m with a total net integration time of 504 ks. A maximum likelihood source detection was performed in the 0.5-2 keV, 2-4.5 keV and 4.5-10 keV energy bands and 1390 point-like sources were detected in at least one band. Detailed Monte Carlo simulations were performed to fully test the source detection method and to derive the sky coverage to be used in the computation of the logN-logS relations. The 0.5--2 keV and 2--10 keV differential logN-logS were fitted with a broken power-law model which revealed a Euclidean slope (alpha~2.5) at the bright end and a flatter slope (alpha~1.5) at faint fluxes. In the 5--10 keV energy band a single power-law provides an acceptable fit to the observed source counts with a slope alpha~2.4. A comparison with the results of previous surveys shows good agreement in all the energy bands under investigation in the overlapping flux range. We also notice a remarkable agreement between our logN-logS relations and the most recent model of the XRB. The slightly different normalizations observed in the source counts of COSMOS and previous surveys can be largely explained as a combination of low counting statistics and cosmic variance introduced by the large scale structure.

12 Pages, 10 figures. Accepted for publication for the COSMOS APJS

References in corpus (12)

• The Cosmic Evolution Survey (COSMOS) -- Overview
• The synthesis of the cosmic X-ray background in the Chandra and XMM-Newton era
• X-ray spectral properties of AGN in the Chandra Deep Field South
• The XMM-Newton wide-field survey in the COSMOS field: I. Survey description
• The XMM-Newton wide-field survey in the COSMOS field: VI. Statistical properties of clusters of galaxies
• The XMM-Newton wide-field survey in the COSMOS field: III. optical identification and multiwavelength properties of a large sample of X-ray selected sources
• The XMM-Newton wide-field survey in the COSMOS field. IV: X-ray spectral properties of Active Galactic Nuclei
• The XMM-Newton survey of the ELAIS-S1 field. I: Number counts, angular correlation function and X-ray spectral properties
• The angular correlations of galaxies in the COSMOS field
• Spatial Correlation Function of the Chandra Selected Active Galactic Nuclei
• The XMM-Newton wide-field survey in the COSMOS field: V. Angular Clustering of the X-ray Point Sources
• The soft X-ray Cluster-AGN spatial cross-correlation function in the ROSAT-NEP survey

Cited by in corpus (49)

• The Cosmic Evolution Survey (COSMOS) -- Overview
• The Chandra Deep Field-South Survey: 7 Ms Source Catalogs
• The XMM-Newton Serendipitous Survey. V. The Second XMM-Newton Serendipitous Source Catalogue
• The Chandra COSMOS Survey, I: Overview and Point Source Catalog
• Bright AGN Source List from the First Three Months of the Fermi Large Area Telescope All-Sky Survey
• Photometric redshift and classification for the XMM-COSMOS sources
• The XMM-Newton wide-field survey in the COSMOS field: I. Survey description
• The XMM-Newton wide-field survey in the COSMOS field: VI. Statistical properties of clusters of galaxies
• The XMM-Newton wide-field survey in the COSMOS field. The point-like X-ray source catalogue
• The Fermi-LAT high-latitude Survey: Source Count Distributions and the Origin of the Extragalactic Diffuse Background
• The Subaru/XMM-Newton Deep Survey (SXDS): III. X-Ray Data
• The XMM-Newton wide-field survey in the COSMOS field: III. optical identification and multiwavelength properties of a large sample of X-ray selected sources
• A new method for determining the sensitivity of X-ray imaging observations and the X-ray number counts
• CANDELS Multiwavelength Catalogs: Source Identification and Photometry in the CANDELS COSMOS Survey Field
• A new method to separate star forming from AGN galaxies at intermediate redshift: The submillijansky radio population in the VLA-COSMOS survey
• The Chandra COSMOS-Legacy survey: Source X-ray spectral properties
• The eROSITA Final Equatorial-Depth Survey (eFEDS): Catalog of galaxy clusters and groups
• Detailed Shape and Evolutionary Behavior of the X-ray Luminosity Function of Active Galactic Nuclei
• The XMM-Newton wide-field survey in the COSMOS field. IV: X-ray spectral properties of Active Galactic Nuclei
• The spatial clustering of X-ray selected AGN in the XMM-COSMOS field
• High redshift quasars in the COSMOS survey: the space density of z>3 X-ray selected QSOs
• High precision X-ray logN-logS distributions: implications for the obscured AGN population
• XMM-Newton observations of the Lockman Hole: X-ray source catalogue and number counts
• BAT X-ray Survey - III: X-ray Spectra and Statistical Properties
• The Cosmic Evolution Survey (COSMOS): a large-scale structure at z=0.73 and the relation of galaxy morphologies to local environment
• The OPTX Project I: The Flux and Redshift Catalogs for the CLANS, CLASXS, and CDF-N fields
• The XMM-Newton wide-field survey in the COSMOS field: V. Angular Clustering of the X-ray Point Sources
• Chandra Observations of the Cl1604 Supercluster at z=0.9: Evidence for an Overdensity of Active Galactic Nuclei
• OTELO Survey: Deep BVRI broadband photometry of the Groth strip. II Properties of X-ray Emitters
• Multi-wavelength properties of radio and machine-learning identified counterparts to submillimeter sources in S2COSMOS
• A large, deep 3 deg${}^2$ survey of H$\alpha$, [OIII], and [OII] emitters from LAGER: constraining luminosity functions
• Brightest X-ray clusters of galaxies in the CFHTLS wide fields: Catalog and optical mass estimator
• The deep Chandra survey in the SDSS J1030+0524 field
• A $Chandra-Swift$ View of Point Sources in Hickson Compact Groups: High AGN fraction but a dearth of strong AGNs
• AGN triggering in the infall regions of distant X-ray luminous galaxy clusters at 0.9 < z <~ 1.6
• The NuSTAR Extragalactic Survey of the James Webb Space Telescope North Ecliptic Pole Time-Domain Field
• The Next Generation X-ray Galaxy Survey with eROSITA
• PEARLS: NuSTAR and XMM-Newton Extragalactic Survey of the JWST North Ecliptic Pole Time-Domain Field II
• GALFIT-ing AGN Host Galaxies in COSMOS: HST vs. Subaru
• AGN and Star Formation at Cosmic Noon: Comparison of Data to Theoretical Models
• Optical Selection of Faint AGN in the COSMOS Field
• Extragalactic Surveys: AGN physics and evolution
• X-ray Redshifts for Obscured Active Galactic Nuclei with AXIS Deep and Intermediate Surveys
• A comprehensive study of H$\alpha$ emitters at $z\sim$ 0.62 in the DAWN survey: the need for deep and wide regions
• On the Origin of the Strong Optical Variability of Emission-line Galaxies
• Host galaxy and nuclear properties of IR-selected AGNs with and without outflow signatures
• A High-resolution Far-infrared Survey to Probe Black Hole-Galaxy Co-evolution
• X-ray source counts in the COSMOS field
• Low star-formation activity and low gas content of quiescent galaxies at $z=$ 3.5-4.0 constrained with ALMA