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Galaxy Distribution in Clusters of Galaxies

Published online by Cambridge University Press:  25 May 2016

T. Okamoto ,
S. Yachi  and
A. Habe
T. Okamoto
Affiliation:
Division of Physics, Hokkaido University Sapporo 060 Japan
S. Yachi
Affiliation:
Division of Physics, Hokkaido University Sapporo 060 Japan
A. Habe
Affiliation:
Division of Physics, Hokkaido University Sapporo 060 Japan

Extract

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Galaxy distribution in clusters maybe affected by dynamical evolution of clusters and merging process of their member galaxies. In oreder to studey the effect, we study formation and evolution of galaxies in clusters by using N-body simulation. To identify galaxy size dark halos, we use the adaptive friends-of-friends algorithm (van Kampen 1995) at several red-shifts. At the same time, we treat galaxy merging and dark matter accretion to the galaxies by using the simple merging model. In this model we assume that galaxies have the merging cross section proportional to and if they encounter in small relative velocity (< Vmerge), they merge into one galaxy.

Type
IV. Structure Formation and Dark Matter
Information
Symposium - International Astronomical Union , Volume 183: Cosmological Parameters and the Evolution of the Universe , 1999 , pp. 262
Copyright
Copyright © Kluwer 1999 

References

Smith, R., Driver, S., Phillips, S. 1997, MNRAS, 287, 415 CrossRefGoogle Scholar
van Kampen, E. 1995, MNRAS, 273, 295 Google Scholar