Radio Observations of the 13hr XMM/ROSAT Deep X-ray Survey Area

Abstract

In order to determine the relationship between the faint X-ray and faint radio source populations, and hence to help understand the X-ray and radio emission mechanisms in those faint source populations, we have made a deep 1.4GHz Very Large Array radio survey of the 13h +38deg XMM/ROSAT X-ray Survey Area. From a combined data set of 10hours B configuration data and 14hours A configuration data, maps with 3.35'' resolution and a noise limit of 7.5uJy were constructed. A complete sample of 449 sources was detected within a 30' diameter region above a 4sigma detection limit of 30uJy, at the map centre, making this one of the deepest radio surveys at this frequency. The differential source count shows a significant upturn at sub-milliJansky flux densities, similar to that seen in other deep surveys at 1.4GHz (eg the Phoenix survey), but larger than that seen in the HDF which may have been selected to be under-dense. This upturn is well modelled by the emergence of a population of medium redshift starforming galaxies which dominate at faint flux densities. The brighter source counts are well modelled by AGNs.

13 pages, 5 figures (one only available from http://www2.iap.fr/users/seymour/ due to size), 2 tables, accepted for publication in MNRAS

References in corpus (13)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• Deep radio imaging of the SCUBA 8-mJy survey fields: sub-mm source identifications and redshift distribution
• The Phoenix Deep Survey: The 1.4 GHz microJansky catalogue
• The VLA-VIRMOS Deep Field I. Radio observations probing the microJy source population
• The Diversity of Extremely Red Objects
• The Local Hole in the Galaxy Distribution: Evidence from 2MASS
• The Radio/Mid-Infrared Correlation and the Contribution of 15-micron Galaxies to the 1.4-GHz Source Counts
• Star Formation History and Other Properties of the Northern HDF
• Two 100 Mpc-scale structures in the 3-D distribution of radio galaxies and their implications
• The clustering of sub-mJy radio sources in The Bootes Deep Field
• X-ray and optical properties of X-ray sources in the 13hr XMM-Newton/Chandra deep survey
• A medium deep Chandra and Subaru survey of the 13hr XMM/ROSAT deep survey area
• Radio observations of the XMM-Newton/Chandra 13hr deep survey field

Cited by in corpus (65)

• On the evolution of star forming galaxies
• A semi-empirical simulation of the extragalactic radio continuum sky for next generation radio telescopes
• Radio and Millimeter Continuum Surveys and their Astrophysical Implications
• The Very Large Array Low-frequency Sky Survey Redux (VLSSr)
• The VLA-COSMOS Survey. IV. Deep Data and Joint Catalog
• Radio imaging of the Subaru/XMM-Newton Deep Field - I. The 100-microJy catalogue, optical identifications, and the nature of the faint radio source population
• The Star Formation History of the Universe as Revealed by Deep Radio Observations
• A new method to separate star forming from AGN galaxies at intermediate redshift: The submillijansky radio population in the VLA-COSMOS survey
• Deep multi-frequency radio imaging in the Lockman Hole using the GMRT and VLA: I. The nature of the sub-mJy radio population
• The VLA-COSMOS Survey: III. Further Catalog Analysis and the Radio Source Counts
• Characterizing Foreground for redshifted 21-cm radiation: 150 MHz GMRT observations
• Radio imaging of the Subaru/XMM-Newton Deep Field - III. Evolution of the radio luminosity function beyond z=1
• A catalogue of micro-Jy radio sources in northern legacy fields
• LeMMINGs. I. The eMERLIN legacy survey of nearby galaxies. 1.5-GHz parsec-scale radio structures and cores
• The VLA Survey of the Chandra Deep Field South: I. Overview of the Radio Data
• Radio Observations of the Hubble Deep Field South Region II: The 1.4 GHz Catalogue and Source Counts
• High-resolution VLA Imaging of SDSS Stripe 82 at 1.4 GHz
• The LABOCA survey of the Extended Chandra Deep Field South - radio and mid-infrared counterparts to submillimetre galaxies
• A model for the cosmological evolution of low frequency radio sources
• The accretion history of the Universe with the SKA
• The luminosity-dependent high-redshift turnover in the steep spectrum radio luminosity function: clear evidence for downsizing in the radio-AGN population
• The Lockman Hole Project: new constraints on the sub-mJy source counts from a wide-area 1.4 GHz mosaic
• A Combined EIS-NVSS Survey Of Radio Sources (CENSORS) III: Spectroscopic observations
• Obscuring Active Galactic Nuclei with Nuclear Starburst Disks
• Investigating the Far-IR/Radio Correlation of Star Forming Galaxies to z=3
• A 610-MHz survey of the ELAIS-N1 field with the Giant Metrewave Radio Telescope - Observations, data analysis and source catalogue
• The Phoenix Deep Survey: spectroscopic catalog
• The distribution of polarized radio sources $>$15$\mu$Jy in GOODS-N
• ATLAS 1.4 GHz Data Release 2 -- I. Observations of the CDF-S and ELAIS-S1 fields and methods for constructing differential number counts
• ATLAS 1.4 GHz Data Release 2 -- II. Properties of the faint polarized sky
• The VLA Survey of the Chandra Deep Field South. II. Identification and host galaxy properties of submillijansky sources
• The Deep SWIRE Field. IV. First properties of the sub-mJy galaxy population: redshift distribution, AGN activity and star formation
• An Ultra-deep Multi-band VLA Survey of the Faint Radio Sky (COSMOS-XS): Source Catalog and Number Counts
• A 610-MHz survey of the Lockman Hole with the Giant Metrewave Radio Telescope - I. Observations, data reduction and source catalogue for the central 5 square degrees
• 325-MHz observations of the ELAIS-N1 field using the Giant Metrewave Radio Telescope
• A tale of two feedbacks: star-formation in the host galaxies of radio-AGN
• X-ray spectra of sources in the 13H XMM-Newton / Chandra deep field
• An evolution of the IR-Radio correlation at very low flux densities?
• The Far-Infrared Luminosity Function from GOODS-N: Constraining the Evolution of Infrared Galaxies for z \leq 1
• Completing the Census of AGN in GOODS-S/HUDF: New Ultra-Deep Radio Imaging and Predictions for JWST
• Science with the Murchison Widefield Array: Phase I Results and Phase II Opportunities
• Constraints on submicrojansky radio number counts based on evolving VLA-COSMOS luminosity functions
• Deep 610-MHz Giant Metrewave Radio Telescope observations of the Spitzer extragalactic First Look Survey field - III. The radio properties of Infrared-Faint Radio Sources
• XMM-Newton 13H Deep field - I. X-ray sources
• Prospects for detecting the 326.5 MHz redshifted 21 cm HI signal with the Ooty Radio Telescope (ORT)
• A search for distant radio galaxies from SUMSS and NVSS: II. Optical Spectroscopy
• Radio Weak Gravitational Lensing with VLA and MERLIN
• The ATLAS 5.5 GHz survey of the Extended Chandra Deep Field South: Catalogue, Source Counts and Spectral Indices
• Radio Observations of the Hubble Deep Field South Region IV: Optical Properties of the Faint Radio Population
• Constraints on the distribution of absorption in the X-ray selected AGN population found in the 13H XMM-Newton/Chandra deep field
• The cosmic radio background from 150 MHz--8.4 GHz, and its division into AGN and star-forming galaxy flux
• A deep 1.4 GHz survey of the J1030 equatorial field: a new window on radio source populations across cosmic time
• COLDz: Deep 34 GHz Continuum Observations and Free-free Emission in High-redshift Star-forming Galaxies
• VLBA+GBT observations of the COSMOS field and radio source counts at 1.4 GHz
• The Contribution of Active Galactic Nuclei to the Microjansky Radio Population
• The ATLAS 9.0 GHz Survey of the Extended Chandra Deep Field South: The Faint 9.0 GHz Radio Population
• The radio properties of optically obscured Spitzer sources
• Weak Lensing Measurements in Simulations of Radio Images
• HerMES: Disentangling active galactic nuclei and star formation in the radio source population
• Infrared-Faint Radio Sources in the SERVS deep fields: Pinpointing AGNs at high redshift
• Are Active Galactic Nuclei the Solution to the Excess Cosmic Radio Background at 1.4 GHz?
• Probing the Wind Component of Radio Emission in Luminous High-Redshift Quasars
• The Phoenix Deep Survey: Extremely Red Galaxies and Cluster Candidates
• The VVDS-VLA Deep Field: III. GMRT observations at 610 MHz and the radio spectral index properties of the sub-mJy population
• AGN in deep radio/X-ray surveys: hunting the earliest massive galaxies