The Evolutionary Map of the Universe pilot survey

Ray P. Norris, Joshua Marvil, J. D. Collier, Anna D. Kapińska, Andrew N. O'Brien, L. Rudnick, Heinz Andernach, Jacobo Asorey, Michael J.I. Brown, Marcus Brüggen, Evan Crawford, Jayanne English, Syed Faisal Ur Rahman, Miroslav D. Filipović, Yjan Gordon, Gülay Gürkan, Catherine Hale, Andrew M. Hopkins, Minh T. Huynh, Kim HyeongHanM. James Jee, Bärbel S. Koribalski, Emil Lenc, Kieran Luken, David Parkinson, Isabella Prandoni, Wasim Raja, Thomas H. Reiprich, Christopher J. Riseley, Stanislav S. Shabala, Jaimie R. Sheil, Tessa Vernstrom, Matthew T. Whiting, James R. Allison, C. S. Anderson, Lewis Ball, Martin Bell, John Bunton, T. J. Galvin, Neeraj Gupta, Aidan Hotan, Colin Jacka, Peter J. MacGregor, Elizabeth K. Mahony, Umberto Maio, Vanessa Moss, M. Pandey-Pommier, Maxim A. Voronkov

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

We present the data and initial results from the first pilot survey of the EvolutionaryMap of the Universe (EMU), observed at 944MHz with the Australian Square Kilometre Array Pathfinder (ASKAP) telescope. The survey covers 270 deg2 of an area covered by the Dark Energy Survey, reaching a depth of 25-30 μJy beam-1 rms at a spatial resolution of ~11-18 arcsec, resulting in a catalogue of ~220 000 sources, of which ~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.

Original languageEnglish
Article numbere046
JournalPublications of the Astronomical Society of Australia
Volume38
DOIs
Publication statusPublished - 2021

Bibliographical note

Funding Information:
Acknowledgements. We thank an anonymous referee for valuable feedback on an earlier iteration of this paper. The Australian SKA Pathfinder is part of the Australia Telescope National Facility which is managed by CSIRO. Operation of ASKAP is funded by the Australian Government with support from the National Collaborative Research Infrastructure Strategy. Establishment of the Murchison Radio-astronomy Observatory was funded by the Australian Government and the Government of Western Australia. ASKAP uses advanced supercomputing resources at the Pawsey Supercomputing Centre. We acknowledge the Wajarri Yamatji people as the traditional owners of the Observatory site. This work makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. It also makes use of data from the European Space Agency (ESA) mission Gaia, and we acknowledge the institutions listed on https:// gea.esac.esa.int/archive/documentation/GEDR3/Miscellaneous/sec/_acknowl/ It also uses public archival data from the DES and we acknowledge the institutions listed on https://www.darkenergysurvey.org/the-des-project/ data-access/. This research has made use of the ‘Aladin sky atlas’ developed at CDS, Strasbourg Observatory, France (Boch & Fernique 2014). This research uses services or data provided by the Astro Data Lab at NSF’s National Optical-Infrared Astronomy Research Laboratory. NOIRLab is operated by the Association of Universities for Research in Astronomy (AURA), Inc. under a cooperative agreement with the National Science Foundation. Partial support for LR comes from US National Science Foundation Grant AST 17-14205 to the University of Minnesota. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. CLH acknowledges support from the Leverhulme Trust through an Early Career Research Fellowship. IP acknowledges support from CSIRO under its Distinguished Research Visitor Programme, and from INAF through the SKA/CTA PRIN “FORECaST” and the PRIN MAIN STREAM “SAuROS” projects. MJJ acknowledges support from the National Research Foundation of Korea under the program nos. 2017R1A2B2004644 and 2017R1A4A1015178. CJR acknowledges financial support from the ERC Starting Grant ‘DRANOEL’, number 714245. HA benefited from grant CIIC 174/2021 of Universidad de Guanajuato.

Funding Information:
We thank an anonymous referee for valuable feedback on an earlier iteration of this paper. The Australian SKA Pathfinder is part of the Australia Telescope National Facility which is managed by CSIRO. Operation of ASKAP is funded by the Australian Government with support from the National Collaborative Research Infrastructure Strategy. Establishment of the Murchison Radio-astronomy Observatory was funded by the AustralianGovernment and the Government ofWestern Australia. ASKAP uses advanced supercomputing resources at the Pawsey Supercomputing Centre. We acknowledge the Wajarri Yamatji people as the traditional owners of the Observatory site. This work makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. It also makes use of data from the European Space Agency (ESA) mission Gaia, and we acknowledge the institutions listed on https:// gea.esac.esa.int/archive/documentation/GEDR3/Miscellaneous/sec/_acknowl/ It also uses public archival data from the DES and we acknowledge the institutions listed on https://www.darkenergysurvey.org/the-des-project/ data-access/. This research has made use of the 'Aladin sky atlas' developed at CDS, Strasbourg Observatory, France (Boch & Fernique 2014). This research uses services or data provided by the Astro Data Lab at NSF's National Optical-Infrared Astronomy Research Laboratory. NOIRLab is operated by the Association of Universities for Research in Astronomy (AURA), Inc. under a cooperative agreement with the National Science Foundation. Partial support for LR comes from US National Science Foundation Grant AST 17-14205 to the University of Minnesota. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. CLH acknowledges support from the Leverhulme Trust through an Early Career Research Fellowship. IP acknowledges support from CSIRO under its Distinguished Research Visitor Programme, and from INAF through the SKA/CTA PRIN "FORECaST" and the PRIN MAIN STREAM "SAuROS" projects. MJJ acknowledges support from the National Research Foundation of Korea under the program nos. 2017R1A2B2004644 and 2017R1A4A1015178. CJR acknowledges financial support from the ERC Starting Grant 'DRANOEL', number 714245. HA benefited from grant CIIC 174/2021 of Universidad de Guanajuato.

Publisher Copyright:
© The Author(s), 2021.

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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