Deep ASKAP EMU Survey of the GAMA23 field: Properties of radio sources

Gülay Gürkan; I. Prandoni; A. O'Brien; W. Raja; L. Marchetti; M. Vaccari; S. Driver; E. Taylor; T. Franzen; M. J. I. Brown; S. Shabala; H. Andernach; A. M. Hopkins; R. P. Norris; D. Leahy; M. Bilicki; H. Farajollahi; T. Galvin; G. Heald; B. S. Koribalski; T. An; K. Warhurst

doi:10.1093/mnras/stac880

Deep ASKAP EMU Survey of the GAMA23 field: Properties of radio sources

Gülay Gürkan, I. Prandoni, A. O'Brien, W. Raja, L. Marchetti, M. Vaccari, S. Driver, E. Taylor, T. Franzen, M. J. I. Brown, S. Shabala, H. Andernach, A. M. Hopkins, R. P. Norris, D. Leahy, M. Bilicki, H. Farajollahi, T. Galvin, G. Heald, B. S. KoribalskiT. An, K. Warhurst

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Abstract

We present the Australian Square Kilometre Array Pathfinder (ASKAP) observations of the Galaxy and Mass Assembly (GAMA)-23h field. The survey was carried out at 887.5 MHz and covers a 83 square degree field. We imaged the calibrated visibility data, taken as part of the Evolutionary Mapping of Universe (EMU) Early Science Programme, using the latest version of the ASKAPSoft pipeline. The final mosaic has an angular resolution of 10 arcsec and a central rms noise of around 38 $\mu$Jy beam$^{-1}$. The derived radio source catalogue has 39812 entries above a peak flux density threshold of 5$\sigma$. We searched for the radio source host galaxy counterparts using the GAMA spectroscopic (with an i-band magnitude limit of 19.2 mag) and multi-wavelength catalogues that are available as part of the collaboration. We identified hosts with GAMA spectroscopic redshifts for 5934 radio sources. We describe the data reduction, imaging, and source identification process, and present the source counts. Thanks to the wide area covered by our survey, we obtain very robust counts down to 0.2 mJy. ASKAP's exceptional survey speed, providing efficient, sensitive and high resolution mapping of large regions of the sky in conjunction with the multi-wavelength data available for the GAMA23 field, allowed us to discover 63 giant radio galaxies. The data presented here demonstrate the excellent capabilities of ASKAP in the pre-SKA era.

Original language	English
Number of pages	18
Journal	Monthly Notices of the Royal Astronomical Society (MNRAS)
Volume	512
Issue number	4
DOIs	https://doi.org/10.1093/mnras/stac880
Publication status	Published - 11 Apr 2022

Keywords

astro-ph.GA
astro-ph.CO

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10.1093/mnras/stac880Licence: CC BY

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© 2022 The Author(s).Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommonsorg/licenses/by/4.0/).
Final published version, 3.24 MBLicence: CC BY

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Gürkan, G., Prandoni, I., O'Brien, A., Raja, W., Marchetti, L., Vaccari, M., Driver, S., Taylor, E., Franzen, T., Brown, M. J. I., Shabala, S., Andernach, H., Hopkins, A. M., Norris, R. P., Leahy, D., Bilicki, M., Farajollahi, H., Galvin, T., Heald, G., ... Warhurst, K. (2022). Deep ASKAP EMU Survey of the GAMA23 field: Properties of radio sources. Monthly Notices of the Royal Astronomical Society (MNRAS), 512(4). https://doi.org/10.1093/mnras/stac880

@article{e30e4e104f954c70b8c563a12be81ffe,

title = "Deep ASKAP EMU Survey of the GAMA23 field: Properties of radio sources",

abstract = "We present the Australian Square Kilometre Array Pathfinder (ASKAP) observations of the Galaxy and Mass Assembly (GAMA)-23h field. The survey was carried out at 887.5 MHz and covers a 83 square degree field. We imaged the calibrated visibility data, taken as part of the Evolutionary Mapping of Universe (EMU) Early Science Programme, using the latest version of the ASKAPSoft pipeline. The final mosaic has an angular resolution of 10 arcsec and a central rms noise of around 38 $\mu$Jy beam$^{-1}$. The derived radio source catalogue has 39812 entries above a peak flux density threshold of 5$\sigma$. We searched for the radio source host galaxy counterparts using the GAMA spectroscopic (with an i-band magnitude limit of 19.2 mag) and multi-wavelength catalogues that are available as part of the collaboration. We identified hosts with GAMA spectroscopic redshifts for 5934 radio sources. We describe the data reduction, imaging, and source identification process, and present the source counts. Thanks to the wide area covered by our survey, we obtain very robust counts down to 0.2 mJy. ASKAP's exceptional survey speed, providing efficient, sensitive and high resolution mapping of large regions of the sky in conjunction with the multi-wavelength data available for the GAMA23 field, allowed us to discover 63 giant radio galaxies. The data presented here demonstrate the excellent capabilities of ASKAP in the pre-SKA era.",

keywords = "astro-ph.GA, astro-ph.CO",

author = "G{\"u}lay G{\"u}rkan and I. Prandoni and A. O'Brien and W. Raja and L. Marchetti and M. Vaccari and S. Driver and E. Taylor and T. Franzen and Brown, {M. J. I.} and S. Shabala and H. Andernach and Hopkins, {A. M.} and Norris, {R. P.} and D. Leahy and M. Bilicki and H. Farajollahi and T. Galvin and G. Heald and Koribalski, {B. S.} and T. An and K. Warhurst",

note = "{\textcopyright} 2022 The Author(s).Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommonsorg/licenses/by/4.0/).",

year = "2022",

month = apr,

day = "11",

doi = "10.1093/mnras/stac880",

language = "English",

volume = "512",

journal = "Monthly Notices of the Royal Astronomical Society (MNRAS)",

issn = "0035-8711",

publisher = "Oxford University Press (OUP)",

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Gürkan, G, Prandoni, I, O'Brien, A, Raja, W, Marchetti, L, Vaccari, M, Driver, S, Taylor, E, Franzen, T, Brown, MJI, Shabala, S, Andernach, H, Hopkins, AM, Norris, RP, Leahy, D, Bilicki, M, Farajollahi, H, Galvin, T, Heald, G, Koribalski, BS, An, T & Warhurst, K 2022, 'Deep ASKAP EMU Survey of the GAMA23 field: Properties of radio sources', Monthly Notices of the Royal Astronomical Society (MNRAS), vol. 512, no. 4. https://doi.org/10.1093/mnras/stac880

TY - JOUR

T1 - Deep ASKAP EMU Survey of the GAMA23 field: Properties of radio sources

AU - Gürkan, Gülay

AU - Prandoni, I.

AU - O'Brien, A.

AU - Raja, W.

AU - Marchetti, L.

AU - Vaccari, M.

AU - Driver, S.

AU - Taylor, E.

AU - Franzen, T.

AU - Brown, M. J. I.

AU - Shabala, S.

AU - Andernach, H.

AU - Hopkins, A. M.

AU - Norris, R. P.

AU - Leahy, D.

AU - Bilicki, M.

AU - Farajollahi, H.

AU - Galvin, T.

AU - Heald, G.

AU - Koribalski, B. S.

AU - An, T.

AU - Warhurst, K.

N1 - © 2022 The Author(s).Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommonsorg/licenses/by/4.0/).

PY - 2022/4/11

Y1 - 2022/4/11

N2 - We present the Australian Square Kilometre Array Pathfinder (ASKAP) observations of the Galaxy and Mass Assembly (GAMA)-23h field. The survey was carried out at 887.5 MHz and covers a 83 square degree field. We imaged the calibrated visibility data, taken as part of the Evolutionary Mapping of Universe (EMU) Early Science Programme, using the latest version of the ASKAPSoft pipeline. The final mosaic has an angular resolution of 10 arcsec and a central rms noise of around 38 $\mu$Jy beam$^{-1}$. The derived radio source catalogue has 39812 entries above a peak flux density threshold of 5$\sigma$. We searched for the radio source host galaxy counterparts using the GAMA spectroscopic (with an i-band magnitude limit of 19.2 mag) and multi-wavelength catalogues that are available as part of the collaboration. We identified hosts with GAMA spectroscopic redshifts for 5934 radio sources. We describe the data reduction, imaging, and source identification process, and present the source counts. Thanks to the wide area covered by our survey, we obtain very robust counts down to 0.2 mJy. ASKAP's exceptional survey speed, providing efficient, sensitive and high resolution mapping of large regions of the sky in conjunction with the multi-wavelength data available for the GAMA23 field, allowed us to discover 63 giant radio galaxies. The data presented here demonstrate the excellent capabilities of ASKAP in the pre-SKA era.

AB - We present the Australian Square Kilometre Array Pathfinder (ASKAP) observations of the Galaxy and Mass Assembly (GAMA)-23h field. The survey was carried out at 887.5 MHz and covers a 83 square degree field. We imaged the calibrated visibility data, taken as part of the Evolutionary Mapping of Universe (EMU) Early Science Programme, using the latest version of the ASKAPSoft pipeline. The final mosaic has an angular resolution of 10 arcsec and a central rms noise of around 38 $\mu$Jy beam$^{-1}$. The derived radio source catalogue has 39812 entries above a peak flux density threshold of 5$\sigma$. We searched for the radio source host galaxy counterparts using the GAMA spectroscopic (with an i-band magnitude limit of 19.2 mag) and multi-wavelength catalogues that are available as part of the collaboration. We identified hosts with GAMA spectroscopic redshifts for 5934 radio sources. We describe the data reduction, imaging, and source identification process, and present the source counts. Thanks to the wide area covered by our survey, we obtain very robust counts down to 0.2 mJy. ASKAP's exceptional survey speed, providing efficient, sensitive and high resolution mapping of large regions of the sky in conjunction with the multi-wavelength data available for the GAMA23 field, allowed us to discover 63 giant radio galaxies. The data presented here demonstrate the excellent capabilities of ASKAP in the pre-SKA era.

KW - astro-ph.GA

KW - astro-ph.CO

U2 - 10.1093/mnras/stac880

DO - 10.1093/mnras/stac880

M3 - Article

SN - 0035-8711

VL - 512

JO - Monthly Notices of the Royal Astronomical Society (MNRAS)

JF - Monthly Notices of the Royal Astronomical Society (MNRAS)

IS - 4

ER -

Deep ASKAP EMU Survey of the GAMA23 field: Properties of radio sources

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