Status of Shell Galaxies

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Dynamics and Interactions of Galaxies

Abstract

“Shells” or “ripples” around galaxies have been known for a few decades. A set of peculiar galaxies classified as “shell galaxies” appeared in Arp’s catalogue (Arp, 1966). But only recently has special attention has been drawn to them. The improvement of photographic emulsions, and the application of new photographic techniques such as “unsharp masking” and “contrast enhancement” by Malin (1977, 1981) has led to the discovery of shells and other peculiar features in a substantial fraction of early-type galaxies. The publication of Malin and Carter’s (1983) catalogue of 137 shell galaxies found in the SRC/ESO Southern Sky Survey clearly established the importance of this phenomenon and showed that about 10% of ellipticals are surrounded by shells. They define this class of objects as: “These galaxies appear at first sight to be normal ellipticals, but closer inspection reveals one or more edged-brightened structures”.

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© 1990 Springer-Verlag Berlin Heidelberg

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Prieur, JL. (1990). Status of Shell Galaxies. In: Wielen, R. (eds) Dynamics and Interactions of Galaxies. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-75273-5_11

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  • DOI: https://doi.org/10.1007/978-3-642-75273-5_11

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-75275-9

  • Online ISBN: 978-3-642-75273-5

  • eBook Packages: Springer Book Archive

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