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Tidal Dwarf Galaxies

Published online by Cambridge University Press:  25 May 2016

P.-A. Duc
Affiliation:
ESO, Karl-Schwarzschild Strasse 2, D-85748 Garching bei München, Germany,
I.F. Mirabel
Affiliation:
CEA, SAp, C.E. Saclay, 91191 Gif/Yvette Cedex, France, & Instituto de Astronomía y, Física del Espacio, Argentina,

Abstract

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We review the observational evidences for tidal dwarf galaxies, a class of small galaxies formed out of the tidal debris of collisions between massive galaxies. Tidal dwarfs are found far from the interacting parent galaxies, associated with massive clouds of atomic hydrogen located at the tip of long tidal tails. These newly formed galaxies are among the best cases for the study of galaxy formation in the nearby Universe.