Matches in SemOpenAlex for { <https://semopenalex.org/work/W4289704893> ?p ?o ?g. }
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- W4289704893 abstract "ABSTRACT SubHalo Abundance Matching (SHAM) is an empirical method for constructing galaxy catalogues based on high-resolution N-body simulations. We apply SHAM on the UNIT simulation to simulate SDSS BOSS/eBOSS luminous red galaxies (LRGs) within a wide redshift range of 0.2 < $z$ < 1.0. Besides the typical SHAM scatter parameter σ, we include $v$smear and Vceil to take into account the redshift uncertainty and the galaxy incompleteness, respectively. These two additional parameters are critical for reproducing the observed 2PCF multipoles on 5–25$, h^{-1}, {rm Mpc}$. The redshift uncertainties obtained from the best-fitting $v$smear agree with those measured from repeat observations for all SDSS LRGs except for the LOWZ sample. We explore several potential systematics but none of them can explain the discrepancy found in LOWZ. Our explanation is that the LOWZ galaxies might contain another type of galaxies that needs to be treated differently. The evolution of the measured σ and Vceil also reveals that the incompleteness of eBOSS galaxies decreases with the redshift. This is the consequence of the magnitude lower limit applied in eBOSS LRG target selection. Our SHAM also set upper limits for the intrinsic scatter of the galaxy–halo relation, given a complete galaxy sample: σint < 0.31 for LOWZ at 0.2 < $z$ < 0.33, σint < 0.36 for LOWZ at 0.33 < $z$ < 0.43, and σint < 0.46 for CMASS at 0.43 < $z$ < 0.51. The projected 2PCFs of our SHAM galaxies also agree with the observational ones on the 2PCF fitting range." @default.
- W4289704893 created "2022-08-04" @default.
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- W4289704893 date "2022-08-03" @default.
- W4289704893 modified "2023-09-30" @default.
- W4289704893 title "Model BOSS and eBOSS luminous red galaxies at 0.2 < <i>z</i> < 1.0 using SubHalo Abundance Matching with three parameters" @default.
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