1. The Evolutionary Map of the Universe pilot survey
- Author
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E. J. Crawford, Elizabeth K. Mahony, Ray P. Norris, G. Gürkan, Kieran J. Luken, Andrew M. Hopkins, Michael J. I. Brown, Neeraj Gupta, Andrew O'Brien, J. Marvil, David Parkinson, John D. Bunton, Jacobo Asorey, Stanislav S. Shabala, C. J. Riseley, Syed Faisal ur Rahman, Jordan D. Collier, Anna D. Kapińska, C. L. Hale, Maxim Voronkov, C. E. Jacka, Baerbel Koribalski, Kim HyeongHan, Martin Bell, Tessa Vernstrom, M. Huynh, Wasim Raja, M. James Jee, Umberto Maio, M. Pandey-Pommier, Emil Lenc, James R. Allison, I. Prandoni, Matthew Whiting, Marcus Brüggen, Tim J. Galvin, Vanessa A. Moss, Lewis Ball, Lawrence Rudnick, Aidan Hotan, Yjan A. Gordon, Jaimie R. Sheil, Peter J. Macgregor, Thomas H. Reiprich, Christy Anderson, Heinz Andernach, Jayanne English, and Miroslav Filipovic
- Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO) ,FOS: Physical sciences ,01 natural sciences ,law.invention ,Telescope ,law ,0103 physical sciences ,Surface brightness ,Instrumentation and Methods for Astrophysics (astro-ph.IM) ,010303 astronomy & astrophysics ,Image resolution ,Physics ,010308 nuclear & particles physics ,Astronomy ,Astronomy and Astrophysics ,Extragalactic astronomy ,Redshift ,Pathfinder ,13. Climate action ,Space and Planetary Science ,astro-ph.CO ,Dark energy ,Astrophysics - Instrumentation and Methods for Astrophysics ,astro-ph.IM ,Astrophysics - Cosmology and Nongalactic Astrophysics ,Radio astronomy - 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
- Published
- 2021
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