Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.257..689t&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 257, no. 4, Aug. 15, 1992, p. 689-698.
Astronomy and Astrophysics
Astronomy
20
Active Galaxies, Computerized Simulation, Galactic Mass, Interacting Galaxies, Irregular Galaxies, Spiral Galaxies, Elliptical Galaxies, Galactic Clusters, Galactic Structure
Scientific paper
Numerical simulations of galaxy shredding are presented together with a case study of the nearby active galaxy Centaurus A. It is suggested that a shred-forming encounter with a spiral galaxy (about the same size as the Milky Way) took place some 5 x 10 exp 8 yr ago. The captured disk material now forms the conspicuous ring of gas and dust which girdles Centaurus A, and probably provides the fuel that powers the radio emission seen today. The present shredding model provides a consistent picture of many aspects of the Centaurus A system, including: the relative positions and velocities of Centaurus A, NGC 5237, and the Fourcade-Figueroa shred; the orientation and sense of rotation of the dust lane in Centaurus A; the peculiar nature of the interacting dwarf elliptical galaxy NGC 5237; and the orientation and observed nonrotation of the Fourcade-Figueroa shred.
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