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Minor Mergers and the Formation of Shell Galaxies
Published online by Cambridge University Press: 12 April 2016
Abstract
We present a new mechanism which can explain the observed radial displacement between the stellar and gaseous shells observed around early type galaxies. Our model is based on the well-known phasewrapping process taking into account that a fraction of the interstellar medium is clumpy and consequently it experiences a low dynamical friction during a merging event. Moreover, our recent detection of cold molecular gas associated with the outer shells of Centaurus A is in agreement with the proposed model. This suggests that a considerable fraction of molecular gas in minor mergers may be distributed away from the nuclear regions and remain undetected.
- Type
- Part 3. Numerical Simulations
- Information
- International Astronomical Union Colloquium , Volume 174: Small Galaxy Groups , 2000 , pp. 273 - 276
- Copyright
- Copyright © Astronomical Society of the Pacific 2000
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