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Tidal dwarf galaxies as laboratories of star formation and cosmology

Published online by Cambridge University Press:  01 August 2006

Pierre-Alain Duc ,
Frédéric Bournaud  and
Médéric Boquien
Pierre-Alain Duc
Affiliation:
AIM – Unité Mixte de Recherche CEA – CNRS – Université Paris VII – UMR n° 7158 Service d'Astrophysique, CEA–Saclay, 91191 Gif-sur-Yvette, France email: paduc@cea.fr
Frédéric Bournaud
Affiliation:
AIM – Unité Mixte de Recherche CEA – CNRS – Université Paris VII – UMR n° 7158 Service d'Astrophysique, CEA–Saclay, 91191 Gif-sur-Yvette, France email: paduc@cea.fr
Médéric Boquien
Affiliation:
AIM – Unité Mixte de Recherche CEA – CNRS – Université Paris VII – UMR n° 7158 Service d'Astrophysique, CEA–Saclay, 91191 Gif-sur-Yvette, France email: paduc@cea.fr
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Abstract

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Star formation may take place in a variety of locations in interacting systems: in the dense core of mergers, in the shock regions at the interface of the colliding galaxies and even within the tidal debris expelled into the intergalactic medium. Along tidal tails, objects may be formed with masses ranging from those of super-star clusters to dwarf galaxies: the so-called Tidal Dwarf Galaxies (TDGs). Based on a set of multi-wavelength observations and extensive numerical simulations, we show how TDGs may simultaneously be used as laboratories to study the process of star-formation (SFE, IMF) in a specific environment and as probes of various cosmological properties, such as the distribution of dark matter and satellites around galaxies.

Keywords

galaxies: dwarfgalaxies: starburstgalaxies: formationgalaxies: interactions
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S237: Triggered Star Formation in a Turbulent ISM , August 2006 , pp. 323 - 330
Copyright
Copyright © International Astronomical Union 2007

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