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The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Mock galaxy catalogues for the final BOSS Data Release | | Francisco-Shu Kitaura
; Sergio Rodriguez-Torres
; Chia-Hsun Chuang
; Cheng Zhao
; Francisco Prada
; Hector Gil-Marin
; Hong Guo
; Gustavo Yepes
; Anatoly Klypin
; Claudia G. Scoccola
; Jeremy Tinker
; Cameron McBride
; Beth Reid
; Ariel G. Sanchez
; Salvador Salazar-Albornoz
; Jan Niklas Grieb
; Mariana Vargas-Magana
; Antonio J. Cuesta
; Mark Neyrinck
; Florian Beutler
; Johan Comparat
; Will Percival
; Ashley Ross
; | | Date: |
21 Sep 2015 | | Abstract: | We reproduce the galaxy clustering catalogue from the SDSS-III Baryon
Oscillations Spectroscopic Survey Data Release 12 (BOSS DR12) with high
fidelity on all relevant scales in order to allow a robust analysis of baryon
acoustic oscillations and redshift space distortions. We have generated 12,288
MultiDark patchy light-cones corresponding to an effective volume of ~192,000
[Gpc/h]^3 (the largest ever simulated volume), including cosmic evolution in
the range from 0.15 to 0.75. The mocks have been calibrated using a reference
galaxy catalogue based on the Halo Abundance Matching modelling of the BOSS
DR12 galaxy clustering data and on the data themselves. The production of the
MultiDark PATCHY BOSS DR12 mocks follows three steps. First, we apply the
PATCHY-code to generate a dark matter field and an object distribution
including nonlinear stochastic galaxy bias. Second, we run the halo/stellar
distribution reconstruction HADRON-code to assign masses to the various
objects. This step uses the mass distribution as a function of local density
and non-local indicators (i.e., tidal-field tensor eigenvalues and relative
halo-exclusion separation for massive objects) from the reference simulation
applied to the corresponding PATCHY dark matter and galaxy distribution.
Finally, in consistency with the observed catalogues, we apply the SUGAR-code
to build the light-cones. Thus, we reproduce the number density, clustering
bias, selection function, and survey geometry of the different BOSS galaxy
samples. The resulting MultiDark PATCHY mock light-cones reproduce, in general
within 1-sigma, the power spectrum and two-point correlation functions up to k
= 0.3 h/Mpc and down to a few Mpc scales, respectively, and the three-point
statistics of the BOSS DR12 galaxy samples, for arbitrary stellar mass bins. | | Source: | arXiv, 1509.6400 | | Services: | Forum | Review | PDF | Favorites | |
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