{"paper":{"title":"A comparison of the most massive quiescent galaxies from $z \\sim 3$ to the present: slow evolution in size, and spheroid-dominated","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"2), (2) Pomona College, (3) Texas A&M, (4) UCO/Lick, 5) ((1) Carnegie Observatories, (5) Uber), Bradford P. Holden (4), Rik J. Williams (1, Ryan F. Quadri (3), Shannon G. Patel (1), Yu Xuan Hong (1","submitted_at":"2017-04-06T18:00:04Z","abstract_excerpt":"We use Hubble Space Telescope imaging to study the structural properties of ten of the most massive ($M \\geq 10^{11.25}$ Msun) quiescent galaxies (QGs) in the UKIDSS UDS at $2.5<z<3.0$. The low spatial density of these galaxies required targeted WFC3 $H_{160}$ imaging, as such systems are rare in existing surveys like CANDELS. We fit Sersic models to the 2D light profiles and find that the median half-light radius is $R_e \\sim 3$ kpc, a factor of $\\sim 3$ smaller than QGs with similar masses at $z \\sim 0$. Complementing our sample with similarly massive QGs at lower redshifts, we find that the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.01969","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"}