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: general

radio continuum: galaxies


galaxies: active

galaxies: evolution



Andrew Butler

University of Western Australia

Minh Huynh

CSIRO Astronomy and Space Science

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 A3


Acceleratorfysik och instrumentering

Astronomi, astrofysik och kosmologi




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