Monte Carlo simulation of distribution of orbital parameters for globular clusters in the Galaxy

Details Monte Carlo simulation of distribution of orbital parameters for globular clusters in the Galaxy Monte Carlo simulation of distribution of orbital parameters for globular clusters in the Galaxy

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003acasn..44..147w&link_type=abstract

Acta Astronomica Sinica, vol. 44, no. 2, p. 147-155

Astronomy and Astrophysics

Astronomy

Globular Clusters: Individual: Ngc4590, Ngc6121, Ngc6341, Globular Clusters: General, Methods: Statistical

Scientific paper

On the base of previous work, we investigate the effect of orbital parameters of 3 globular clusters on the uncertainties of initial observational data. The uncertainties associated with the observational data were derived in a Monte Carlo approach, and the orbital parameters are calculated using the simulation data for 3 globular clusters. The results show that the distribution morphologies of the orbital parameters which are produced by simulation data are separated into three types: Gaussian profile, semi-Gaussian profile and non- Gaussian profile. The influence of uncertainties of initial observational data on the orbital parameters is related to the selection of the sample clusters and the types of the orbital parameters. Besides, considering the differences of the galactic gravitational potential models, there is different influence for the distribution morphologies of all of the orbital parameters of the selected sample clusters. The results of this work make contributions to the researches of kinematics and dynamics of globular clusters.

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