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Type:
Abstract
Title:
Dynamical friction and galaxy rotation - Should mergers lead to slow rotation?
Authors:
Kashlinsky, A.
Affiliation:
AA(Cambridge University, Cambridge, England)
Journal:
Royal Astronomical Society, Monthly Notices (ISSN 0035-8711), vol. 208, June 1, 1984, p. 623-631. (MNRAS Homepage)
Publication Date:
06/1984
Origin:
STI
Aabstract Copyright:
Bibliographic Code:
1984MNRAS.208..623K
Doc-summary/Abstract:
The evolution of the orbital angular momentum of a heavy particle that is subject to the dynamical friction force will generally be such that its spin will increase. Attention is given to the importance of this consequence in determining the final spin of the merger remnant, and it is shown that if the core radius of the merged halo is small, the spin will increase as initially spiral galaxies sink to the center and merge into a single unit. It would in this case be difficult to identify the merger remnant as a slowly rotating elliptical galaxy, although if the core radius is large, the spin will increase by a smaller amount. The present results are applied to other astrophysical systems.
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