Distribution of Galactic globular clusters

Document Type : Research Paper

Authors

Assistant Prof., Energy Engineering and physics Dept., Amirkabir Univ. of Tech.

Abstract

Globular Clusters are the oldest populations of stars of our Galaxy which their stars have unique characteristics. Similar initial mass, equal age and equal distance from us are common characteristics of stars of a cluster. Distribution of the globular clusters is very interesting. Most of them are in galactic halo and specially in halo near to the galactic center. Globular clusters nearer to central part of our galaxy have different evolution respect to others, due to external force of Galactic center. Because of the subject Cluster M13 respect to Omega Centaurs are nearer to galactic center and it has less number and smaller size. In this work we obtained distribution of the globular clusters in galactic coordinates. Meanwhile a list of 133 Globular clusters from 150 ones is presented and the most luminous ones in the north and south sky which are observable by naked eye, and their general characteristics are studied.

Keywords

References

[1] N. A. Sharp, “M22, NGC6656”, REU Program/NOAO/AURA/NSF (2006).
[2] https://en.wikipedia.org/wiki/Globular_cluster.
[3] http://www.atlasoftheuniverse.com/globular.html.
[4] W. E. Harris, “Catalog of parameters for milky way Globular Clusters”,
Astronomical Journal 112 1487 (1996).
[5] W. E. Harris, G. L. H. Harris, M. Alessi, “A Catalog of Globular Cluster
Systems: What Determines the Size of a Galaxy's Globular Cluster Population?”,
The Astrophysical Journal 722 82H (2013).
[6] W. E. Harris, S. van den Bergh, “The distant globular clusters Palomar 14 and
Palomar 15”, Astronomical Journal 89 1816H (1984).
[7] http://www.astronomy-mall.com/Adventures.In.Deep.Space/palglob.htm.

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History

  • Receive Date: 26 January 2016
  • Revise Date: 08 May 2018
  • Accept Date: 19 May 2018

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