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Tidal Tails around 20 Galactic Globular Clusters
Georges Meylan, Stephane Leon, Francoise Combes
We present our study of the 2-D structures of the tidal tails associated with 20 galactic globular clusters, structures obtained by using the wavelet transform to detect weak struc…
N-body simulations of globular cluster tides
F. Combes, S. Leon, G. Meylan
We present N-body simulations of globular clusters, in orbits around the Galaxy, in order to study quantitatively and geometrically the tidal effects they encounter. The clusters a…
Time Delay of PKS1830-211 Using Molecular Absorption Lines
T. Wiklind, F. Combes
The use of molecular absorption lines in deriving the timde delay in PKS1830-211 is described, as well as results from a three year monitoring campaign. The time delay and the impl…
Gas and Dust in Protogalaxies
F. Combes
The study of high-redshift objects is rapidly developing, allowing to build the star formation history of the Universe. Since most of the flux from starbursts comes out in the FIR…
Formation of Gaseous Shells
F. Combes, V. Charmandaris
HI observations have revealed in several shell galaxies the presence of gaseous shells slightly displaced from the stellar shells radially, in the outward direction. We propose a m…
Bar-driven Galaxy Evolution and Time-scales to Feed AGN
F. Combes
Recent progress in the understanding of the role of bars and gravitational instabilities in galaxy disks is reviewed. It has been proposed that bars can produce mass transfer towar…