{"paper":{"title":"The SLUGGS Survey: Dark matter fractions at large radii and assembly epochs of early-type galaxies from globular cluster kinematics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Aaron J. Romanowsky, Adebusola B. Alabi, Anna Ferr\\'e-Mateu, Christopher Usher, Duncan A. Forbes, Jay Strader, Jean P. Brodie, Joachim Janz, Lee R. Spitler, Sabine Bellstedt","submitted_at":"2017-01-20T19:00:05Z","abstract_excerpt":"We use globular cluster kinematics data, primarily from the SLUGGS survey, to measure the dark matter fraction ($f_{\\rm DM}$) and the average dark matter density ($\\left< \\rho_{\\rm DM} \\right>$) within the inner 5 effective radii ($R_{\\rm e}$) for 32 nearby early--type galaxies (ETGs) with stellar mass log $(M_*/\\rm M_\\odot)$ ranging from $10.1$ to $11.8$. We compare our results with a simple galaxy model based on scaling relations as well as with cosmological hydrodynamical simulations where the dark matter profile has been modified through various physical processes.\n  We find a high $f_{\\rm"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.05904","kind":"arxiv","version":2},"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"}