Stability of Hickson Groups of Galaxies

Authors : İbrahim Selim And Naseer IQBAL

Pages : 133-137

Doi:10.3906/sag-1211-21

View : 16 | Download : 8

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :In this work we have used the Viril theorem to investigate the dynamical stability of Hickson compact groups of galaxies. The average luminous mass of the galaxies member is approximately 1.3 \times 011 M\odot and average total luminous mass of group is approximately 4.6 \times 011 M\odot. The virial theorem has used to estimate the virial mass. The average Virial mass of group of galaxies is approximately 6.3 \times 013 M\odot This is attributed to the presence of large amount of dark matter which is more than 90% in this group. Hickson compact groups of galaxies are unstable system due to the virial to luminous masses ratio.
Keywords : Galaxies, compact groups, luminosity, masses