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We investigate the luminosity and colour dependence of clustering of CMASSgalaxies in the Sloan Digital Sky Survey-III Baryon Oscillation SpectroscopicSurvey Tenth Data Release. The halo occupation distribution framework isadopted to model the projected two-point correlation function measurements onsmall and intermediate scales (from $0.02$ to $60\,h^{-1}{\rm {Mpc}}$) and tointerpret the observed trends and infer the connection of galaxies to darkmatter halos. We find that luminous red galaxies reside in massive halos ofmass $M{\sim}10^{13}$--$10^{14}\,h^{-1}{\rm M_\odot}$ and more luminousgalaxies are more clustered and hosted by more massive halos. The strongsmall-scale clustering requires a fraction of these galaxies to be satellitesin massive halos, with the fraction at the level of 5--8 per cent anddecreasing with luminosity. The characteristic mass of a halo hosting onaverage one satellite galaxy above a luminosity threshold is about a factor$8.7$ larger than that of a halo hosting a central galaxy above the samethreshold. At a fixed luminosity, progressively redder galaxies are morestrongly clustered on small scales, which can be explained by having a largerfraction of these galaxies in the form of satellites in massive halos. Ourclustering measurements on scales below $0.4\,h^{-1}{\rm {Mpc}}$ allow us tostudy the small-scale spatial distribution of satellites inside halos. Whilethe clustering of luminosity-threshold samples can be well described by aNavarro-Frenk-White (NFW) profile, that of the reddest galaxies prefers asteeper or more concentrated profile. Finally, we also use galaxy samples ofconstant number density at different redshifts to study the evolution ofluminous galaxies, and find the clustering to be consistent with passiveevolution in the redshift range of $0.5 \lesssim z \lesssim 0.6$.

monthly notices of the royal astronomical society

The clustering of galaxies in the SDSS-III Baryon Oscillation  Spectroscopic Survey: modeling of the luminosity and colour dependence in the  Data Release 10