Physics – Fluid Dynamics
Scientific paper
Jan 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ap%26ss..46..205a&link_type=abstract
Astrophysics and Space Science, vol. 46, Jan. 1977, p. 205-214. Research supported by the Consiglio Nazionale delle Ricerche.
Physics
Fluid Dynamics
3
Astronomical Models, Dynamic Models, Globular Clusters, Anisotropy, Cores, Density Distribution, Fluid Dynamics, Relaxation Time, Star Clusters, Stellar Mass, Velocity Distribution
Scientific paper
Test calculations have been carried out on the evolution of star clusters using the fluid-dynamical method devised by Larson (1970). Large systems of stars have been considered with special attention given to globular clusters. With reference to the analogous 'standard' model of Larson, the effect of varying in turn the different free parameters (cluster mass, star mass, tidal radius, mass concentration of the initial model) has been studied. Furthermore, partial modification of some simplifying assumptions with regard to the relaxation time and distribution of the 'target' stars has been considered. The change of the structural properties is discussed, and the variation of the evolutionary time scale is outlined. Good agreement is tentatively found between the results obtained and structural properties of globular clusters as deduced from previous theoretical models.
Angeletti Lucio
Giannone Pietro
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