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Multi-wavelength study of the gravitational lens system RXS J113155.4-123155: I. Multi-epoch optical and near infrared imaging
D. Sluse, J. -F. Claeskens, B. Altieri +6
(abridged) Aims: RXS J113155.4-123155 (z=0.66) is a quadruply imaged lensed quasar with a resolved Einstein Ring. The goal of this paper is to provide a full characterization of th…
The XMM Large-Scale Structure Survey: An initial sample of galaxy groups and clusters to a redshift z<0.6
J. P. Willis, F. Pacaud, I. Valtchanov +14
We present X-ray and optical spectroscopic observations of twelve galaxy groups and clusters identified within the XMM Large-Scale Structure (LSS) survey. Groups and clusters are s…
Photometric monitoring of the doubly imaged quasar UM673: possible evidence for chromatic microlensing
Th. Nakos, F. Courbin, J. Poels +12
We present the results of two-band CCD photometric monitoring of the gravitationally lensed quasar Q 0142-100 (UM 673).The data, obtained at ESO-La Silla with the 1.54 m Danish tel…
The XMM-LSS survey: The XMDS/VVDS 4 sigma catalogue
L. Chiappetti, M. Tajer, G. Trinchieri +15
We present a first catalogue of X-ray sources resulting from the central area of the XMM-LSS (Large Scale Structure survey). We describe the reduction procedures and the database t…
Reconstruction of the microlensing light curves of the Einstein Cross, QSO2237+0305: possible evidence of an accretion disk with a central hole
Dong-Wook Lee, J. Surdej, O. Moreau +2
Recent OGLE (Optical Gravitational Lensing Experiment) and GLITP (Gravitational Lens International Time Project) monitoring data for QSO 2237+0305 (Huchra et al.) have been analyze…