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Physical properties of two low-luminosity z ~ 1.9 galaxies behind the lensing cluster AC 114
M. Lemoine-Busserolle, T. Contini, R. Pello +3
We present VLT/ISAAC near-infrared spectroscopy of two gravitationally-lensed z ~ 1.9 galaxies, A2 and S2, located behind the cluster AC 114. Thanks to large magnification factors,…
Data analysis methods for XMM-Newton observations of extended sources. Application to bright massive clusters of galaxies at z=0.2
Philippe B. Marty, Jean-Paul Kneib, Rachida Sadat +2
In this paper, a review is given of methods useful for XMM-Newton EPIC data analysis of extended sources, along with some applications to a bright massive cluster of galaxies at z=…
The Submillimeter Properties of Extremely Red Objects
E. H. Wehner, A. J. Barger, J. -P. Kneib
We use deep near-infrared and submillimeter observations of three massive lensing cluster fields, A370, A851, and A2390, to determine the average submillimeter properties of a K'-s…
Evidence for tidal stripping of dark matter halos in massive cluster-lenses
Priyamvada Natarajan, Jean-Paul Kneib, Ian Smail
In this letter, we present the results of our study of galaxy-galaxy lensing in massive cluster-lenses spanning to 0.58, utilizing high-quality archival {\it Hubble Spac…
Constraints on the Collisional Nature of the Dark Matter from Gravitational Lensing in the Cluster A2218
Priyamvada Natarajan, Abraham Loeb, Jean-Paul Kneib +1
The detailed distribution of mass within clusters of galaxies can be used to probe the nature of dark matter. We show that constraints on the extent of the mass distribution around…
Constraints on (Omega_M0, Omega_Lambda) from strong lensing in AC 114
G. Golse, J. -P. Kneib, G. Soucail
We use a strong lensing inversion in the cluster of galaxies AC 114 to derive constraints on the cosmological parameters Omega_M0 and Omega_Lambda. If it is possible to measure spe…