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The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Modeling the clustering and halo occupation distribution of BOSS-CMASS galaxies in the Final Data Release | | Sergio A. Rodríguez-Torres
; Francisco Prada
; Chia-Hsun Chuang
; Hong Guo
; Anatoly Klypin
; Peter Behroozi
; Chang Hoon Hahn
; Johan Comparat
; Gustavo Yepes
; Antonio D. Montero-Dorta
; Joel R. Brownstein
; Claudia Maraston
; Cameron K. McBride
; Jeremy Tinker
; Stefan Gottlöber
; Ginevra Favole
; Yiping Shu
; Francisco-Shu Kitaura
; Adam Bolton
; Román Scoccimarro
; Lado Samushia
; David Schlegel
; Donald P. Schneider
; Daniel Thomas
; | | Date: |
Mon, 21 Sep 2015 21:16:41 GMT (1812kb,D) | | Abstract: | We present a study of the clustering and halo occupation distribution of BOSS
CMASS galaxies in the redshift range 0.43 < z < 0.7 drawn from the Final
SDSS-III Data Release. We compare the BOSS results with the predictions of a
halo abundance matching (HAM) clustering model that assigns galaxies to dark
matter halos selected from the large BigMultiDark N-body simulation of a flat
$Lambda$CDM Planck cosmology. We compare the observational data with the
simulated ones on a light-cone constructed from 20 subsequent outputs of the
simulation. Observational effects such as incompleteness, geometry, veto masks
and fiber collisions are included in the model, which reproduces within
1-$sigma$ errors the observed monopole of the 2-point correlation function at
all relevant scales{: --} from the smallest scales, 0.5 $h^{-1}$Mpc , up to
scales beyond the Baryonic Acoustic Oscillation feature. This model also agrees
remarkably well with the BOSS galaxy power spectrum (up to $ksim1$ $h$
Mpc$^{-1}$), and the three-point correlation function. The quadrupole of the
correlation function presents some tensions with observations. We discuss
possible causes that can explain this disagreement, including target selection
effects. Overall, the standard HAM model describes remarkably well the
clustering statistics of the CMASS sample. We compare the stellar to halo mass
relation for the CMASS sample measured using weak lensing in the CFHT Stripe 82
Survey with the prediction of our clustering model, and find a good agreement
within 1-$sigma$. The BigMD-BOSS light-cone catalogue including properties of
BOSS galaxies such as stellar masses, M/L ratios, luminosities, velocity
dispersion and halo properties is made publicly available. | | Source: | arXiv, 1509.6404 | | Services: | Forum | Review | PDF | Favorites | |
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