J/A+A/646/A71ivo://CDS.VizieR/J/A+A/646/A71doi:10.26093/cds/vizier.36460071CDSSimon P.Hilbert S.2021-09-06T11:51:09Z2021-02-10T09:06:13ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frastronomical-modelsgravitational-lensinggalaxiesredshiftedGalaxy models predict a tight relation between the clustering of galaxies and dark matter on cosmological scales, but predictions differ notably in the details. We used this opportunity and tested two semi-analytic models by the Munich and Durham groups with data from the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS). For the test we measured the scale-dependent galaxy bias factor b(k) and correlation factor r(k) from linear to non-linear scales of k=~10h/Mpc at two redshifts z{bar}=0.35, 0.51 for galaxies with stellar mass between 5x10^9^ and 3x10^11^h_70_^-2^M_{sun|_. Our improved gravitational lensing technique accounts for the intrinsic alignment of sources and the magnification of lens galaxies for better constraints for the galaxy-matter correlation r(k). Galaxy bias in CFHTLenS increases with k and stellar mass; it is colour-dependent, revealing the individual footprints of galaxy types. Despite a reasonable model agreement for the relative change with both scale and galaxy properties, there is a clear conflict for b(k) with no model preference: the model galaxies are too weakly clustered. This may flag a model problem at z>~0.3 for all stellar masses. As in the models, however, there is a high correlation r(k) between matter and galaxy density on all scales, and galaxy bias is typically consistent with a deterministic bias on linear scales. Only our blue and low-mass galaxies of about 7x10^9^h_70_^-2^M_{sun}_ at z{bar}=0.51 show, contrary to the models, a weak tendency towards a stochastic bias on linear scales where rls=0.75+/-0.14(stat.)+/-0.06(sys.). This result is of interest for cosmological probes, such as EG, that rely on a deterministic galaxy bias. We provide Monte Carlo realisations of posterior constraints for b(k) and r(k) in CFHTLenS for every galaxy sample in this paper at the CDS.2021A&A...646A..71Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/646/A71CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/584/A53 : Code for trispectrum of halo model (Kuntz, 2015)J/A+A/627/A137 : Cosmology from galaxy lensing and clustering (Jullo+, 2019)J/MNRAS/452/1171 : Extended X-ray sources in CFHTLenS footprint (Wilcox+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/646/A71https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/646/A71http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/646/A71https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/646/A71https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/646/A71http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/646/A71GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/646/A71/listList of filesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSampleSamplesrc.samplecharzbinPhotometric redshift bins (low-z (<z>~0.35) or high-z (<z>~0.51)src.redshiftcharTypegalaxy bias or redshift distributionmeta.codecharFileNameName of the filemeta.id;meta.filechar