Evolution of star clusters in arbitrary tidal fields

Renaud, F, Gieles, M and Boily, C (2011) Evolution of star clusters in arbitrary tidal fields Monthly Notices of the Royal Astronomical Society.

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Abstract

We present a novel and flexible tensor approach to computing the effect of a time-dependent tidal field acting on a stellar system. The tidal forces are recovered from the tensor by polynomial interpolation in time. The method has been implemented in a direct-summation stellar dynamics integrator (NBODY6) and test-proved through a set of reference calculations: heating, dissolution time and structural evolution of model star clusters are all recovered accurately. The tensor method is applicable to arbitrary configurations, including the important situation where the background potential is a strong function of time. This opens up new perspectives in stellar population studies reaching to the formation epoch of the host galaxy or galaxy cluster, as well as for star-burst events taking place during the merger of large galaxies. A pilot application to a star cluster in the merging galaxies NGC 4038/39 (the Antennae) is presented.

Item Type:	Article
Authors :	Name Email ORCID Renaud, F Gieles, M m.gieles@surrey.ac.uk Boily, C
Date :	28 July 2011
Identification Number :	10.1111/j.1365-2966.2011.19531.x
Related URLs :	Author
Depositing User :	Symplectic Elements
Date Deposited :	17 May 2017 12:40
Last Modified :	17 May 2017 15:05
URI:	http://epubs.surrey.ac.uk/id/eprint/836262

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