Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...301..407d&link_type=abstract
Astronomy and Astrophysics, v.301, p.407
Astronomy and Astrophysics
Astrophysics
45
Chaotic Phenomena, Celestial Mechanics, Stellar Dynamics, Galaxy: Kinematics And Dynamics, Galaxy: Open Clusters And Associations: General, Stars: Luminosity Function, Mass Function
Scientific paper
The influence of the initial mass function (IMF) on the evolution of open clusters is analyzed using numerical integrations of N-body systems which include tidal effects and formation of multiple systems. Five different IMFs are used for generating stellar masses. The results confirm significant differences with single mass models and allow us to distinguish between the standard power law models and modern ones. An approximate analytic expression for the escape rate is derived in order to fit the data obtained. The population of multiple systems is discussed briefly and some questions concerning multicomponent clusters, such as preferential evaporation of light stars, are reviewed.
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