The XXL Survey
In: Astronomy and Astrophysics-A&A Astronomy and Astrophysics-A&A, 2018, 620, pp.A11. ⟨10.1051/0004-6361/201833616⟩ Astronomy and Astrophysics-A&A, EDP Sciences, 2018, 620, pp.A11. ⟨10.1051/0004-6361/201833616⟩ Astronomy and Astrophysics Volume 620 Astronomy & astrophysics, 2018, Vol.620, pp.A11 [Peer Reviewed Journal]; (2018-12-01)
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Zugriff:
In this paper we present the optical, near-infrared (NIR) and X-ray identifications of the 6287 radio sources detected in the 2.1 GHz deep radio survey down to a median rms of ~ 41microJy/beam obtained with the Australia Telescope Compact Array (ATCA) in the XXL-S field. The goal of this paper is to provide a multi wavelength catalogue of the counterparts of the radio sources to be used in further studies. For the optical and NIR identification of the radio sources, we used the likelihood ratio (LR) technique, slightly modified in order to take into account the presence of a large number of relatively bright counterparts close to the radio sources. This procedure led to the identification of optical/NIR counterparts for 4770 different radio sources (~77% of the whole radio sample), 414 of which also have an X-ray counterpart. This fraction of identification is in agreement with previous radio-optical association studies at a similar optical magnitude depth, but is relatively low in comparison to recent work conducted in other radio fields using deeper optical and NIR data. The analysis of optical and NIR properties of radio sources shows that, regardless of the radio flux limit of a radio survey, the nature of the identified sources is strongly dependent on the depth of the optical/NIR used in the identification process. Only with deep enough optical/NIR data will we be able to identify a significant fraction of radio sources with red (z_{DEC}-K) counterparts whose radio emission is dominated by nuclear activity rather than starburst activity.
Comment: 11 pages, 11 figures, Accepted for publication in A&A
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The XXL Survey
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| Autor/in / Beteiligte Person: | Chiappetti, L. ; Huynh, Minh ; Ciliegi, Paolo ; Delhaize, J. ; Jurlin, N. ; Iovino, A. ; Butler, A. ; Smolčić, Vernesa ; Fotopoulou, Sotiria ; Pierre, Marguerite ; INAF - Osservatorio Astronomico di Bologna (OABO) ; Istituto Nazionale di Astrofisica (INAF) ; University of Zagreb ; International Centre for Radio Astronomy Research (ICRAR) ; The University of Western Australia (UWA)-Government of Western Australia-Curtin University [Perth] ; Planning and Transport Research Centre (PATREC)-Planning and Transport Research Centre (PATREC) ; Department of Physics [Durham University] ; University, Durham ; CSIRO Astronomy and Space Science ; Commonwealth Scientific and Industrial Research Organisation [Canberra] (CSIRO) ; INAF - Osservatorio Astronomico di Brera (OAB) ; INAF - Osservatorio Astronomico di Milano (OAM) ; Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)) ; Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS) ; The Saclay group acknowledges long-term support from the Centre National d’Études Spatiales (CNES). ; XXL ; XMM Very Large Programme ; European Project: 337595,EC:FP7:ERC,ERC-2013-StG,COSMASS(2014) ; European Project: 333654,EC:FP7:PEOPLE,FP7-PEOPLE-2012-CIG,AGN FEEDBACK(2013) ; Government of Western Australia-The University of Western Australia (UWA)-Curtin University [Perth] ; Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)) ; Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7) |
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| Quelle: | Astronomy and Astrophysics-A&A Astronomy and Astrophysics-A&A, 2018, 620, pp.A11. ⟨10.1051/0004-6361/201833616⟩ Astronomy and Astrophysics-A&A, EDP Sciences, 2018, 620, pp.A11. ⟨10.1051/0004-6361/201833616⟩ Astronomy and Astrophysics Volume 620 Astronomy & astrophysics, 2018, Vol.620, pp.A11 [Peer Reviewed Journal]; (2018-12-01) |
| Veröffentlichung: | HAL CCSD, 2018 |
| Medientyp: | unknown |
| ISSN: | 0004-6361 (print) ; 1432-0746 (print) |
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