The Completed SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: GLAM-QPM mock galaxy catalogs for the Emission Line Galaxy Sample

Abstract

We present 2000 mock galaxy catalogs for the analysis of baryon acoustic oscillations in the Emission Line Galaxy (ELG) sample of the Extended Baryon Oscillation Spectroscopic Survey Data Release 16 (eBOSS DR16). Each mock catalog has a number density of 6.7 × 10 −4 h 3 Mpc −3 , covering a redshift range from 0.6 to 1.1. The mocks are calibrated to small-scale eBOSS ELG clustering measurements at scales of around 10 h −1 Mpc. The mock catalogs are generated using a combination of GaLAxy Mocks (GLAM) simulations and the Quick Particle-Mesh (QPM) method. GLAM simulations are used to generate the density field, which is then assigned dark matter halos using the QPM method. Halos are populated with galaxies using a halo occupation distribution (HOD). The resulting mocks match the survey geometry and selection function of the data, and have slightly higher number density which allows room for systematic analysis. The large-scale clustering of mocks at the baryon acoustic oscillation (BAO) scale is consistent with data and we present the correlation matrix of the mocks.

The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Large-scale structure catalogues for cosmological analysis

“…The equivalent analyses of the quasar sample are presented in Hou et al (2020), Neveux et al (2020), and Smith et al (2020). The ELG catalogues are presented and analysed in Raichoor et al (2020), further analysed in Tamone et al (2020), de Mattia et al (2020), and supported by simulations of the data presented in Alam et al (2020b) and Lin (2020). Multitracer analysis utilizing the overlapping volume between the LRG and ELG samples is presented in Wang et al (2020) and Zhao et al (2020b).…”