Current and future large redshift surveys, as the Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Survey (SDSS-IV/eBOSS) or the Dark Energy Spectroscopic Instrument (DESI), will use emission-line galaxies (ELG) to probe cosmological models by mapping the large-scale structure of the Universe in the redshift range 0.6<z<1.7. With current data, we explore the halo-galaxy connection by measuring three clustering properties of g-selected ELGs as matter tracers in the redshift range 0.6<z<1: (i) the redshift-space two-point correlation function using spectroscopic redshifts from the BOSS ELG sample and VIPERS; (ii) the angular two-point correlation function on the footprint of the CFHT-LS; (iii) the galaxy-galaxy lensing signal around the ELGs using the CFHTLenS. We interpret these observations by mapping them onto the latest high-resolution MultiDark Planck N-body simulation, using a novel (Sub)Halo-Abundance Matching technique that accounts for the ELG incompleteness. ELGs at z∼0.8 live in halos of (1±0.5)×1012h−1M⊙ and 22.5±2.5% of them are satellites belonging to a larger halo. The halo occupation distribution of ELGs indicates that we are sampling the galaxies in which stars form in the most efficient way, according to their stellar-to-halo mass ratio.
@article{arxiv.1507.04356,
title = {Clustering properties of $g$-selected galaxies at $z\sim0.8$},
author = {Ginevra Favole and Johan Comparat and Francisco Prada and Gustavo Yepes and Eric Jullo and Anna Niemiec and Jean-Paul Kneib and Sergio A. Rodríguez-Torres and Anatoly Klypin and Ramin A. Skibba and Cameron K. McBride and Daniel J. Eisenstein and David J. Schlegel and Sebastián E. Nuza and Chia-Hsun Chuang and Timothée Delubac and Christophe Yèche and Donald P. Schneider},
journal= {arXiv preprint arXiv:1507.04356},
year = {2016}
}