Christophe Benoist

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This paper presents new five passbands (UBV RI) optical wide-field imaging data accumulated as part of the DEEP Public Survey (DPS) carried out as a public survey by the ESO Imaging Survey (EIS) project. Out of the 3 square degrees originally proposed, the survey covers 2.75 square degrees, in at least one band ( normally R), and 1.00 square degrees in five(More)
1 European Southern Observatory, Karl-Schwarzschild-Str. 2, D–85748 Garching b. München, Germany 2 Observatoire de la Côte d’Azur, BP 229, 06304 Nice cedex 4, France 3 Max-Planck Institut für Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching b. München, Germany 4 Universidade Estadual de Feira de Santana, Campus Universitário, Feira de Santana, BA,(More)
Jan Klein 1'2, Christophe Benoist 3, Chella S. David 4, Peter Demant s, Kirsten Fischer Lindahl 6, Lorraine Flaherty 7, Richard A. Flavell s, Ulrich H/imnlerling 9, Leroy E. Hood 1°, Stephen W. Hunt III n, Patricia P. Jones x2, Philippe Kouriisky 13, Hugh O. McDevitt a4, Daniel Meruelo is, Donal B. Murphy 16, Stanley G. Nathenson 17, David H. Sachs is,(More)
We perform a fractal analysis of the Southern Sky Redshift Survey 2, following the methods prescribed by Pietronero and collaborators, to check their claim that the galaxy distribution is fractal at all scales, and we discuss and explain the reasons of some controversial points, through tests on both galaxy samples and simulations. We confirm that the(More)
We investigate the variation of galaxy clustering with luminosity using the recently completed SSRS2 sample. Clustering measurements based on the two-point correlation function and the variance of counts in cells reveal a strong dependence of clustering on luminosity for galaxies brighter than L∗, while no significant variation is detected for fainter(More)
The XMM Cluster Survey (XCS) is a serendipitous search for galaxy clusters using all publicly available data in the XMM–Newton Science Archive. Its main aims are to measure cosmological parameters and trace the evolution of X-ray scaling relations. In this paper we present the first data release from the XMM Cluster Survey (XCS-DR1). This consists of 503(More)
We report on low-resolution multi-object spectroscopy of 30 faint targets (R ≃ 24 − 25) in the HDF-S and AXAF deep field obtained with the VLT Focal Reducer/low dispersion Spectrograph (FORS1). Eight high-redshift galaxies with 2.75 < z < 4 have been identified. The spectroscopic redshifts are in good agreement with the photometric ones with a dispersion σz(More)
In this paper the list of candidate clusters identified from the I-band data of the ESO Imaging Survey (EIS) is completed using the images obtained over a total area of about 12 square degrees. Together with the data reported earlier the total I-band coverage of EIS is 17 square degrees, which has yielded a sample of 252 cluster candidates in the redshift(More)
This paper presents preliminary results of a search for distant clusters of galaxies using the recently released I-band data obtained by the ESO Imaging Survey (EIS), covering about 3 square degrees. A matched filter algorithm is applied to the galaxy catalogs extracted from the two sets of frames that contiguously cover the whole surveyed area. From these(More)
Context. The star HD 87643, exhibiting the “B[e] phenomenon”, has one of the most extreme infrared excesses for this object class. It harbours a large amount of both hot and cold dust, and is surrounded by an extended reflection nebula. Aims. One of our major goals was to investigate the presence of a companion in HD87643. In addition, the presence of close(More)