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Shells and Encounters of Disk Galaxies with Ellipticals

Published online by Cambridge University Press:  04 August 2017

Tsvi Piran
Affiliation:
Racah Institute for Physics, Hebrew University, Jerusalem, Israel & the Institute for Advanced Study, Princeton, NJ 08540, USA
Jens Verner Villumsen
Affiliation:
California Institute of Technology, Pasadena, CA 91125, USA

Extract

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Faint shells have been found around a large number of ellipticals (Malin and Carter 1980, 1983; Schweizer, 1980). Quinn (1984) has suggested that shells form around ellipticals when a small disk galaxy is tidally disrupted in a near radial orbit. According to this mechanism the remnants of the nearly two-dimensional disk maintain their dimensionality and form sheets. These sheets will phasewrap around the elliptical, and the shells are seen when the line of sight is tangent to one of these surfaces (Quinn 1984, Hernquist and Quinn 1986a,b,c).

Type
Posters
Copyright
Copyright © Reidel 1987 

References

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