Search for gravitational lens candidates in the XMM-LSS/CFHTLS common field

Elyiv, Andrii; Melnyk, Olga; Finet, François; Pospieszalska-Surdej, Anna; Chiappetti, L.; Pierre, M.; Sadibekova, T.; Surdej, Jean

doi:10.1093/mnras/stt1255

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Article (Scientific journals)

Search for gravitational lens candidates in the XMM-LSS/CFHTLS common field

Elyiv, Andrii; Melnyk, Olga; Finet, François et al.

2013 • In Monthly Notices of the Royal Astronomical Society, 434, p. 3305-3309

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https://hdl.handle.net/2268/218281

DOI
10.1093/mnras/stt1255

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Keywords :

gravitational lensing: strong

Abstract :

[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.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Elyiv, Andrii ; 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, Olga ; Institut d'Astrophysique et de Géophysique, Université de Liège, 4000 Liège, Belgium ; Astronomical Observatory, Kyiv National University, 3 Observatorna St, 04053 Kyiv, Ukraine

Finet, François ; Institut d'Astrophysique et de Géophysique, Université de Liège, 4000 Liège, Belgium

Pospieszalska-Surdej, Anna ; 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 ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)

Language :

English

Title :

Search for gravitational lens candidates in the XMM-LSS/CFHTLS common field

Publication date :

01 October 2013

Journal title :

Monthly Notices of the Royal Astronomical Society

ISSN :

0035-8711

eISSN :

1365-2966

Publisher :

Blackwell Publishing, Oxford, United Kingdom

Volume :

434

Pages :

3305-3309

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

http://esoads.eso.org/abs/2013MNRAS.434.3305E

Available on ORBi :

since 15 January 2018

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