{"paper":{"title":"The discrepancy between dynamical and stellar masses in massive compact galaxies traces non-homology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"I. Trujillo, J. Falc\\'on-Barroso, L. Peralta de Arriba, M. Balcells","submitted_at":"2013-07-16T19:00:01Z","abstract_excerpt":"For many massive compact galaxies, their dynamical masses ($M_\\mathrm{dyn} \\propto \\sigma^2 r_\\mathrm{e}$) are lower than their stellar masses ($M_\\star$). We analyse the unphysical mass discrepancy $M_\\star / M_\\mathrm{dyn} > 1$ on a stellar-mass-selected sample of early-type galaxies ($M_\\star \\gtrsim 10^{11} \\ \\mathrm{M_\\odot}$) at redshifts $z \\sim 0.2$ to $z \\sim 1.1$. We build stacked spectra for bins of redshift, size and stellar mass, obtain velocity dispersions, and infer dynamical masses using the virial relation $M_\\mathrm{dyn} \\equiv K \\ \\sigma_\\mathrm{e}^2 r_\\mathrm{e} / G$ with $"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.4376","kind":"arxiv","version":4},"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"}