{"paper":{"title":"The Halo Occupation Distribution and the Physics of Galaxy Formation","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) Ohio State University, (3) California Institute of Technology, (4) University of Durham, (5) University of Arizona, (6) University of Massachusetts, 7) ((1) CfCP, (7) Observatoire de Lyon), Adrian Jenkins (4), Andreas A. Berlind (1), Andrew J. Benson (3), Carlos S. Frenk (4), Carlton M. Baugh (4), Cedric G. Lacey (4, David H. Weinberg (2), Neal Katz (6), Romeel Dav\\'e (5), Shaun Cole (4), University of Chicago","submitted_at":"2002-12-16T21:21:34Z","abstract_excerpt":"The halo occupation distribution (HOD) describes the bias between galaxies and dark matter by specifying (a) the probability P(N|M) that a halo of virial mass M contains N galaxies of a particular class and (b) the relative distributions of galaxies and dark matter within halos. We calculate predicted HODs for a Lambda-CDM cosmological model using an SPH hydrodynamic simulation and a semi-analytic (SA) galaxy formation model. Although the two methods predict different galaxy mass functions, their HOD predictions agree remarkably well. For mass-selected samples, the mean occupation <N(M)> exhib"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0212357","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}