An application of sphere of activity in three-body model of interacting galaxies |
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| Authors: | Bulin Liu |
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| Institution: | (1) Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing, China |
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| Abstract: | The sphere of activity which be considered in the test stars of both central galaxies and satellite galaxies is used in three-body model to study the orbital decay of interacting galaxies. It can take account of both  semi-restrictedN-body program (Lin and Tremaine, 1983) and multiple three-body algorithm (Borne, 1984) at the same time. The merger time is calculated accurately. The orbital decay of satellite galaxy is characterized. Energy and angular momentum which are carried away by escaping star are computed, too. |
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