{"paper":{"title":"The last 6 Gyr of dark matter assembly in massive galaxies from the Kilo Degree Survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"C. Tortora, F. Getman, G. A. Verdoes Kleijn, K. H. Kuijken, L. V. E. Koopmans, M. Radovich, N. R. Napolitano, N. Roy","submitted_at":"2017-09-11T18:49:17Z","abstract_excerpt":"We study the dark matter (DM) assembly in the central regions of massive early-type galaxies up to $z\\sim 0.65$. We use a sample of $\\sim 3800$ massive ($\\log M_{\\rm \\star}/M_{\\rm \\odot} > 11.2$) galaxies with photometry and structural parameters from 156 sq. deg. of the Kilo Degree Survey, and spectroscopic redshifts and velocity dispersions from SDSS. We obtain central total-to-stellar mass ratios, $M_{\\rm dyn}/M_{\\rm \\star}$, and DM fractions, by determining dynamical masses, $M_{\\rm dyn}$, from Jeans modelling of SDSS aperture velocity dispersions and stellar masses, $M_{\\rm \\star}$, from "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.03542","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}