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The Dynamical Evolution of Centaurus A

Published online by Cambridge University Press:  25 May 2016

S.G. Vine  and
R.C. Thomson
S.G. Vine
Affiliation:
Institute of Astronomy, Madingley Road, Cambridge, CB3 0HA. UK
R.C. Thomson
Affiliation:
Institute of Astronomy, Madingley Road, Cambridge, CB3 0HA. UK

Extract

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Centaurus A (NGC 5128) is a nearby Giant Elliptical (3.5Mpc, 1012 Solar Masses). It has a prominent dust-lane which has an axis of rotation orientated differently from that of the underlying galaxy. Close to it are two galaxies: NGC 5237 – a dwarf elliptical, and Fourcade-Figueroa – a low surface brightness irregular. We are investigating whether these three objects are the resulting components of a grazing interaction between a Giant Elliptical and a less massive spiral galaxy. We have conducted n-body simulations, modelling all components of the two original interacting galaxies. Preliminary results show that Cen A, its dust-lane, and NGC 5237 are consistent with this simulation model. Centaurus A exhibits many other features which are also indicative of a past interaction.

Type
Poster Papers
Information
Symposium - International Astronomical Union , Volume 171: New Light on Galaxy Evolution , 1996 , pp. 463
Copyright
Copyright © Kluwer 1996