The XXL Survey XVIII. ATCA 2.1 GHz radio source catalogue and source counts for the XXL-South field
Artikel i vetenskaplig tidskrift, 2018
The 2.1 GHz radio source catalogue of the 25 deg(2) ultimate XMM extragalactic survey south (XXL-S) field, observed with the Australia Telescope Compact Array (ATCA), is presented. The final radio mosaic achieved a resolution of similar to 4.8" and a median rms noise of sigma approximate to 41 mu Jy/beam. To date, this is the largest area radio survey to reach this flux density level. A total of 6350 radio components above 5 sigma are included in the component catalogue, 26.4% of which are resolved. Of these components, 111 were merged together to create 48 multiple-component radio sources, resulting in a total of 6287 radio sources in the source catalogue, 25.9% of which were resolved. A survival analysis revealed that the median spectral index of the Sydney University Molonglo Sky Survey (SUMSS) 843 MHz sources in the field is alpha = 0.75, consistent with the values of -0.7 to -0.8 commonly used to characterise radio spectral energy distributions of active galactic nuclei. The 2.1 GHz and 1.4 GHz di ff erential radio source counts are presented and compared to other 1.4 GHz radio surveys. The XXL-S source counts show good agreement with the other surveys.
galaxies: evolution
catalogs
galaxies: active
galaxies: general
surveys
radio continuum: galaxies
Författare
Andrew Butler
University of Western Australia
Minh Huynh
Commonwealth Scientific and Industrial Research Organisation (CSIRO)
University of Western Australia
Jacinta Delhaize
Sveučilište u Zagrebu
Vernesa Smolcic
Sveučilište u Zagrebu
Anna Kapinska
University of Western Australia
Dinko Milakovic
Sveučilište u Zagrebu
Mladen Novak
Sveučilište u Zagrebu
Nikola Baran
Sveučilište u Zagrebu
Andrew O'Brien
Western Sydney University
Lucio Chiappetti
IASF Milano
Shantanu Desai
IIT Hyderabad
Sotiria Fotopoulou
Université de Genève
Cathy Horellou
Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik
Chris Lidman
Australian Astronomical Observatory
Marguerite Pierre
Université Paris-Saclay
Astronomy and Astrophysics
0004-6361 (ISSN) 1432-0746 (eISSN)
Vol. 620 A3Ämneskategorier
Acceleratorfysik och instrumentering
Astronomi, astrofysik och kosmologi
Signalbehandling
DOI
10.1051/0004-6361/201630129