Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...153..189h&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 153, no. 1, Dec. 1985, p. 189-198.
Astronomy and Astrophysics
Astrophysics
7
Elliptical Galaxies, Galactic Structure, Gravitational Effects, Halos, Astronomical Models, Circular Orbits, Collision Parameters, Disk Galaxies, Three Body Problem
Scientific paper
Shells around elliptical galaxies are assumed to be the result of the interaction between a massive parent galaxy and a light disk satellite. The effect of orbital eccentricity and the ellipticity of the parent potential are separated and the results discussed in relation to observations. Some shell formations are interpreted in terms of an azimuthally travelling wave whose time behaviour is the result of a beating between the rotational and epicyclic frequencies of the debris stripped from the satellite whereas others are the result of local gravitational effects of the companion mass and the strong vertical accelerations that can occur about the equatorial plane of parent galaxies of large ellipticity. The simulation is a restricted three-body calculation.
Huang Shizhen
Stewart Paul
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