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ce-61: a Tidal Dwarf Galaxy in the Hercules cluster?
W. van Driel, P. -A. Duc, P. Amram +9
A candidate Tidal Dwarf Galaxy, ce-61, was identified in the merger system IC 1182 in the Hercules supercluster. The multi-wavelength data we obtained so far do not prove, however,…
Polar Ring Galaxies and the Tully-Fisher relation
Magda Arnaboldi, Enrica Iodice, Frederick Bournaud +4
We have investigated the Tully-Fisher relation for Polar Ring Galaxies (PRGs), based on near infrared, optical and HI data available for a sample of these peculiar objects. Many PR…
The large extent of dark matter haloes probed by the formation of tidal dwarf galaxies
F. Bournaud, P. -A. Duc, F. Masset
In several interacting systems, gas accumulations as massive as 10^9 solar masses are observed near the tip of tidal tails, and are thought to be possible progenitors of Tidal Dwar…
Formation of polar ring galaxies
F. Bournaud, F. Combes
Polar ring galaxies are peculiar systems in which a gas rich, nearly polar ring surrounds an early-type or elliptical host galaxy. Two formation scenarios for these objects have be…