48 citations · 127 across the 10 of their papers we have counts for
5 papers · 1 filter
Constraining from weak lensing in clusters: the triplet method
L. Gautret, B. Fort, Y. Mellier
We present a new geometrical method which uses weak gravitational lensing effects in clusters to constrain the cosmological parameters Omega and Lambda. On each background galaxy,…
NGC 5907 revisited: a stellar halo formed by cannibalism?
J. Lequeux, F. Combes, M. Dantel-Fort +3
We report on further observations of the luminous halo of NGC 5907. New V, I and B deep photometry confirms the existence of an extended stellar halo redder than the disk. Our data…
The Redshift Distribution of Distant Sources from Gravitational Depletion in Clusters
Y. Mellier
Gravitational lensing can be used to analyze the redshift distribution of faint galaxies. In particular the magnification bias modifies locally the galaxy number density of lensed…
Gravitational Lensing and Tests of the Cosmological Constant
B. Fort, Y. Mellier
The case for a flat Cold Dark Matter model with a positive cosmological constant has been recently strongly advocated by some theoreticians. In this paper we give the observers…
Dark Matter and Gravitational Lensing
Y. Mellier, F. Bernardeau, L. van Waerbeke
The last decade has shown a considerable development of gravitational lensing for cosmology because it probes the amount and the nature of dark matter, and provides information on…