The Evolutionary Map of the Universe Pilot Survey

Abstract

We present the data and initial results from the first Pilot Survey of the Evolutionary Map of the Universe (EMU), observed at 944 MHz with the Australian Square Kilometre Array Pathfinder (ASKAP) telescope. The survey covers 270 \sqdeg of an area covered by the Dark Energy Survey, reaching a depth of 25--30 \ujybm\ rms at a spatial resolution of $\sim$ 11--18 arcsec, resulting in a catalogue of $\sim$ 220,000 sources, of which $\sim$ 180,000 are single-component sources. Here we present the catalogue of single-component sources, together with (where available) optical and infrared cross-identifications, classifications, and redshifts. This survey explores a new region of parameter space compared to previous surveys. Specifically, the EMU Pilot Survey has a high density of sources, and also a high sensitivity to low surface-brightness emission. These properties result in the detection of types of sources that were rarely seen in or absent from previous surveys. We present some of these new results here.

Accepted by PASA

References in corpus (23)

• Second ROSAT all-sky survey (2RXS) source catalogue
• Diffuse Radio Emission from Galaxy Clusters
• CRATES: An All-Sky Survey of Flat-Spectrum Radio Sources
• Radio sources in the 6dFGS: Local luminosity functions at 1.4 GHz for star-forming galaxies and radio-loud AGN
• Observations of extended radio emission in clusters
• The CatWISE2020 Catalog
• The 400 square degrees ROSAT PSPC galaxy cluster survey: Catalog and statistical calibration
• Deep ATLAS radio observations of the CDFS-SWIRE field
• The Radio Spectral Energy Distribution and Star Formation Rate Calibration in Galaxies
• The VLA-COSMOS Survey: III. Further Catalog Analysis and the Radio Source Counts
• WISE x SuperCOSMOS photometric redshift catalog: 20 million galaxies over 3pi steradians
• Galaxy Evolution in the Radio Band: The Role of Starforming Galaxies and Active Galactic Nuclei
• Galaxy and Mass Assembly (GAMA): Exploring the WISE Cosmic Web in G12
• Search and modelling of remnant radio galaxies in the LOFAR Lockman Hole field
• The Radio Continuum-Star Formation Rate Relation in WSRT SINGS Galaxies
• Remnant radio-loud AGN in the Herschel-ATLAS field
• Extragalactic Radio Continuum Surveys and the Transformation of Radio Astronomy
• The ATESP 5 GHz radio survey I. Source counts and spectral index properties of the faint radio population
• Quasar and galaxy classification in Gaia Data Release 2
• RAiSE II: resolved spectral evolution in radio AGN
• The non-linear infrared-radio correlation of low-z galaxies: implications for redshift evolution, a new radio SFR recipe, and how to minimize selection bias
• The clustering and bias of radio-selected AGN and star-forming galaxies in the COSMOS field
• Fokker-Planck Models for M15 without a Central Black Hole: The Role of the Mass Function