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Settling of Gas Disks in Elliptical Galaxies

Published online by Cambridge University Press:  04 August 2017

T.Y. Steiman-Cameron
Affiliation:
J.I.L.A., U. of Colorado, Boulder, CO 80309
R.H. Durisenr
Affiliation:
Astronomy Dept., Indiana U, Bloomington, IN 47405

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Prominent gas disks and dust lanes are found in a number of elliptical galaxies. It is widely believed that these disks are the result of the tidal capture of material from a nearby galaxy or the accretion of a gas rich companion into a larger galaxy. While a captured gas disk will ultimately settle into a steady-state orientation (“preferred plane”), the disk will initially be time varying due to precessional and viscous forces. We have developed methods for modeling the evolution of such inclined dissipative galactic gas disks (Steiman-Cameron 1984, Ph.D. dissertation, Indiana U.; Steiman-Cameron and Durisen 1986, Ap.J., in press, hereafter SCD), and we here present some of the results of this work.

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Copyright
Copyright © Reidel 1987