Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998larm.confe.101c&link_type=abstract
"IX Latin American Regional IAU Meeting, "Focal Points in Latin American Astronomy", held in Tonantzintla, Mexico, Nov 9-13, 199
Astronomy and Astrophysics
Astronomy
Scientific paper
We present results of a set on N-body simulations of 10^5 particles King models, in the presence of a realistic galactic tidal field; the runs span 10 galactic periods and we explore 3 different perigalactica and 4 orbital eccentricities. The tidal effect over the cluster is dominated by two processes differentiated by the way they produce mass loss in the system. The first one is Roche lobe overflow, which depends directly on the ratio of cluster to Roche lobe size. The second process is the tidal heating produced by the time varying part of the galactic tide, which injects energy directly on the orbits of the stars inside the cluster. Whereas Roche lobe overflow is self-limiting and stops when the cluster is contained withing the Roche lobe, tidal heating continues pump energy into the cluster driving in to eventualy to destruction. Our destruction rates are higher than those reported previously by Aguilar, Hut and Ostriker (1988) and Gnedin and Ostriker (1997), who used a semianalytical model and Fokker Planck calculation respectively.
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