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Part of the book series: Astrophysics and Space Science Library ((ASSL,volume 178))

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Abstract

This short review is restricted to some recent work on the domain of galaxy interactions. First, I will make a brief point on dynamical friction at large distance, and show that it is difficult to predict the sinking rates of ellipticals and spirals. The Chandrasekhar approach gives resonable orders of magnitude, but does not include all the essential physics: it sometimes over- and sometimes under-estimates the relative decay rates of two galaxies. I will then describe the direct evidence of tides between spheroidal systems, and show that these tides are relatively well understood. The phenomenon of shells in ellipticals will not be discussed here (see the review by Prieur, 1990). Then I will address some of the complex problems relative to spiral galaxies; the complexity comes from the gas dynamics and the multi-components: stability, spiral waves, resonances, rings. I will then consider tidal interactions with dwarfs and the evidence of gas infall on galaxies. Groups and clusters will not be mentioned here, recent reviews can be found by White (1990) and Tremaine (1990).

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© 1992 Springer Science+Business Media Dordrecht

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Combes, F. (1992). Interactions: Weak. In: Longo, G., Capaccioli, M., Busarello, G. (eds) Morphological and Physical Classification of Galaxies. Astrophysics and Space Science Library, vol 178. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2522-2_22

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  • DOI: https://doi.org/10.1007/978-94-011-2522-2_22

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-5113-2

  • Online ISBN: 978-94-011-2522-2

  • eBook Packages: Springer Book Archive

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