The Bulletin of The Korean Astronomical Society (천문학회보)
- Volume 41 Issue 1
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- Pages.69.1-69.1
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- 2016
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- 1226-2692(pISSN)
Comparison between the Pair Fractions of Dark Matter Halos and Galaxies in Cosmological Simulations
- An, Sung-Ho (Department of Astronomy & Center for Galaxy Evolution Research, Yonsei University) ;
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Kim, Juhan
(Korea Institute for Advanced Study) ;
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Yoon, Suk-Jin
(Department of Astronomy & Center for Galaxy Evolution Research, Yonsei University)
- Published : 2016.04.12
Abstract
We investigate the pair fractions of dark matter halos and galaxies in cosmological simulations. The cosmological simulations are performed by a tree-particle-mesh code GOTPM (Grid-of-Oct-Tree-Particle-Mesh) and the dark matter halos are identified by a halo finding algorithm PSB (Physically Self-Bound). The 'galaxy' pair fractions are obtained from galaxy catalogues of L-Galaxies semi-analytical galaxy formation runs in the Millennium database. We present and compare the pair fractions of the dark matter halos and galaxies as functions of redshifts, halo masses and ambient environments.
Keywords