Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 459, Issue 3, Pages 3040-3058Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stw845
Keywords
galaxies: distances and redshifts; galaxies: haloes; galaxies: statistics; cosmology: observations; cosmology: theory; large-scale structure of Universe
Categories
Funding
- 973 Programme [2015CB857003]
- 100 Talents Program of the Chinese Academy of Sciences
- NSF [AST-1208891]
- NASA [NNX14AC89G]
- Giacconi Fellowship
- STFC [ST/L00075X/1]
- European Research Council through ERC Starting Grant [DEGAS-259586]
- CWRU ACES+ ADVANCE Opportunity Grant
- Spanish MICINNs Consolider-Ingenio Programme [MultiDark CSD2009-00064]
- MINECO Centro de Excelencia Severo Ochoa Programme [SEV-2012-0249]
- MINECO [AYA2014-60641-C2-1-P]
- MINECO (Spain) [AYA2012-31101, FPA2012-34694]
- Center for High Performance Computing at the University of Utah
- Spanish MultiDark Consolider Project [CSD2009-00064]
- Alfred P. Sloan Foundation
- National Science Foundation
- US Department of Energy
- National Aeronautics and Space Administration
- Japanese Monbukagakusho
- Max Planck Society
- Higher Education Funding Council for England
- American Museum of Natural History
- Astrophysical Institute Potsdam
- University of Basel
- University of Cambridge
- Case Western Reserve University
- University of Chicago
- Drexel University
- Fermilab
- Institute for Advanced Study
- Japan Participation Group
- Johns Hopkins University
- Joint Institute for Nuclear Astrophysics
- Kavli Institute for Particle Astrophysics and Cosmology
- Korean Scientist Group
- Chinese Academy of Sciences (LAMOST)
- Los Alamos National Laboratory
- Max-Planck-Institute for Astronomy (MPIA)
- Max-Planck-Institute for Astrophysics (MPA)
- New Mexico State University
- Ohio State University
- University of Pittsburgh
- University of Portsmouth
- Princeton University
- United States Naval Observatory
- University of Washington
- [NSFC-11543003]
- STFC [ST/L00075X/1] Funding Source: UKRI
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1208891] Funding Source: National Science Foundation
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We model the luminosity-dependent projected and redshift-space two-point correlation functions (2PCFs) of the Sloan Digital Sky Survey (SDSS) Data Release 7 Main galaxy sample, using the halo occupation distribution (HOD) model and the subhalo abundance matching (SHAM) model and its extension. All the models are built on the same high-resolution N-body simulations. We find that the HOD model generally provides the best performance in reproducing the clustering measurements in both projected and redshift spaces. The SHAM model with the same halo-galaxy relation for central and satellite galaxies (or distinct haloes and subhaloes), when including scatters, has a best-fitting chi(2)/dof around 2-3. We therefore extend the SHAM model to the subhalo clustering and abundance matching (SCAM) by allowing the central and satellite galaxies to have different galaxy-halo relations. We infer the corresponding halo/subhalo parameters by jointly fitting the galaxy 2PCFs and abundances and consider subhaloes selected based on three properties, the mass M-acc at the time of accretion, the maximum circular velocity V-acc at the time of accretion, and the peak maximum circular velocity V-peak over the history of the subhaloes. The three subhalo models work well for luminous galaxy samples (with luminosity above L-*). For low-luminosity samples, the V-acc model stands out in reproducing the data, with the V-peak model slightly worse, while the M-acc model fails to fit the data. We discuss the implications of the modelling results.
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