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The halo occupation distribution (HOD) is a parameter of the halo model of galaxy clustering.〔 ''Note: See section 7.8: Halo Model of Galaxy Clustering''〕 The halo model provides one view of the large scale structure of the universe as clumps of dark matter, while the HOD provides a view of how galactic matter is distributed within each of the dark matter clumps. The HOD is used to describe three related properties of the halo model: the probability distribution relating the mass of a dark matter halo to the number of galaxies that form within that halo; the distribution in space of galactic matter within a dark matter halo; the distribution of velocities of galactic matter relative to dark matter within a dark matter halo.〔 〕 ==See also== * Dark matter * Large-scale structure of the cosmos * Galaxy formation and evolution 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Halo occupation distribution」の詳細全文を読む スポンサード リンク
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