3 papers
astro-ph2000
A Numerical Study of Cosmic Shear Statistics
A. Thion, Y. Mellier, F. Bernardeau +3
We explore the stability of the variance and skewness of the cosmic gravitational convergence field, using two different approaches: first we simulate a whole MEGACAM survey (100 s…
astro-ph2000
First Detection of Molecular Gas in the Shells of CenA
V. Charmandaris, F. Combes, J. M. van der Hulst
Shells are faint arc-like stellar structures, which have been observed around early type galaxies and are thought to be the result of an interaction. HI gas has recently been detec…
astro-ph1996
Gravitational Lensing and the Redshift Distribution of galaxies
Y. Mellier
In addition to the determination of the mass distribution of lenses (see P. Schneider, this conference), strong and weak lensing can also be powerfull tools to analyse the redshift…