Statistics – Computation
Scientific paper
Mar 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.243..199h&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 243, March 15, 1990, p. 199-208.
Statistics
Computation
21
Computational Astrophysics, Galactic Structure, Interacting Galaxies, Energy Distribution, Three Body Problem, Velocity Distribution
Scientific paper
Numerical simulations are carried out to study the tidal disruption of a satellite galaxy on a bound near-radial orbit through a larger system. This process is thought to give rise to the highly symmetric shell systems seen in galaxies like NGC 1344 and 3923. Shells exist over a wide range of radii in these objects, reflecting a broad distribution of binding energies for the stars of the erstwhile satellite. The manner in which this distribution is related to the structure of the satellite and to its manner of disruption is investigated. It is found that a fully self-consistent treatment of disruption is crucial for obtaining the correct binding energy distribution. The most extensive shell systems are formed for satellites of relatively high mass with mean densities similar to that of the primary. During such encounters the surviving satellite core can transfer a substantial amount of energy to the particles it loses, and so shrink its orbit significantly.
Heisler Julia
White Simon D. M.
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