Reference : Search for gravitational lens candidates in the XMM-LSS/CFHTLS common field
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/218281
Search for gravitational lens candidates in the XMM-LSS/CFHTLS common field
English
Elyiv, A. [Institut d'Astrophysique et de Géophysique, Université de Liège, 4000 Liège, Belgium; Main Astronomical Observatory, Academy of Sciences of Ukraine, 27 Akademika Zabolotnoho St, 03680 Kyiv, Ukraine;]
Melnyk, O. [Institut d'Astrophysique et de Géophysique, Université de Liège, 4000 Liège, Belgium; Astronomical Observatory, Kyiv National University, 3 Observatorna St, 04053 Kyiv, Ukraine]
Finet, F. [Institut d'Astrophysique et de Géophysique, Université de Liège, 4000 Liège, Belgium]
Pospieszalska-Surdej, A. [Institut d'Astrophysique et de Géophysique, Université de Liège, 4000 Liège, Belgium]
Chiappetti, L. [INAF, IASF Milano, via Bassini 15, I-20133 Milano, Italy]
Pierre, M. [Laboratoire AIM, CEA/ DSM/Irfu/SAp, CEA-Saclay, F-91191 Gif-sur-Yvette Cedex, France > > > >]
Sadibekova, T. [Laboratoire AIM, CEA/ DSM/Irfu/SAp, CEA-Saclay, F-91191 Gif-sur-Yvette Cedex, France]
Surdej, Jean mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
1-Oct-2013
Monthly Notices of the Royal Astronomical Society
Blackwell Publishing
434
3305-3309
Yes (verified by ORBi)
International
0035-8711
1365-2966
Oxford
United Kingdom
[en] gravitational lensing: strong
[en] Our aim was to identify gravitational lens candidates among some 5500 optical counterparts of the X-ray point-like sources in the medium-deep ˜11 deg[SUP]2[/SUP] XMM-LSS survey. We have visually inspected the optical counterparts of each QSOs/AGN using CFHTLS T006 images. We have selected compact pairs and groups of sources which could be multiply imaged QSO/AGN. We have measured the colours and characterized the morphological types of the selected sources using the multiple point spread function fitting technique. We found three good gravitational lens candidates: J021511.4-034306, J022234.3-031616 and J022607.0-040301 which consist of pairs of point-like sources having similar colours. On the basis of a colour-colour diagram and X-ray properties we could verify that all these sources are good QSO/AGN candidates rather than stars. Additional secondary gravitational lens candidates are also reported.
Researchers ; Professionals
http://hdl.handle.net/2268/218281
10.1093/mnras/stt1255
http://esoads.eso.org/abs/2013MNRAS.434.3305E

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