Chatterjee, S. ; Kumar, Brijesh ; Ram Sagar, (2002) On mass and velocity distributions in members of star clusters : an analytical approach Bulletin of the Astronomical Society of India, 30 (4). pp. 951-971. ISSN 0304-9523
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Abstract
Dynamical evolution of stellar mass distribution in star clusters is analysed by considering simultaneously the effects of dynamical friction, stochastic heating and the gravitational potential due to mass distribution in the clusters. A simple expression is suggested for the dynamical friction which adequately describes it in both high and low velocity ranges and the effect of mass distribution in the cluster on the dynamics of a test mass can be described by an anharmonic potential. With the help of energy considerations we describe the dispersions in position and in velocity for stars of different masses showing how the slowing down and mass segregation of stars evolve in the cluster. Results are presented with the parameters for the star clusters of our Galaxy.
Item Type: | Article |
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Source: | Copyright of this article belongs to Astronomical Society of India. |
Keywords: | Star Clusters; Dynamical Friction; Dynamical Evolution |
ID Code: | 65949 |
Deposited On: | 20 Oct 2011 06:21 |
Last Modified: | 18 May 2016 13:43 |
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