Dynamical friction and tidal disruption are effective mechanisms of evolution of globular cluster systems, especially in nonaxisymmetric galaxies with a central compact nucleus. With a semi-analytical approach based on a knowledge of the dependence of the dynamical friction and tidal disruption effects on the relevant parameters, we are able to follow the time evolution of the globular cluster system in a model or a triaxial galaxy and give its observable properties to compare with observational data. An important result is that the flatter distribution of the globular cluster system compared with that of the stellar bulge, as observed in many galaxies, can be explained by the evolution of the globular cluster system, starting from the same density profile.
Evolution of the globular cluster system of a triaxial galaxy / CAPUZZO DOLCETTA, Roberto Angelo; Tesseri, A.. - In: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. - ISSN 0035-8711. - STAMPA. - 292:(1997), pp. 808-812.
Evolution of the globular cluster system of a triaxial galaxy
CAPUZZO DOLCETTA, Roberto Angelo;
1997
Abstract
Dynamical friction and tidal disruption are effective mechanisms of evolution of globular cluster systems, especially in nonaxisymmetric galaxies with a central compact nucleus. With a semi-analytical approach based on a knowledge of the dependence of the dynamical friction and tidal disruption effects on the relevant parameters, we are able to follow the time evolution of the globular cluster system in a model or a triaxial galaxy and give its observable properties to compare with observational data. An important result is that the flatter distribution of the globular cluster system compared with that of the stellar bulge, as observed in many galaxies, can be explained by the evolution of the globular cluster system, starting from the same density profile.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
