{"paper":{"title":"The evolution of field early-type galaxies to z~0.7","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) Space Telescope Science Institute, (3) European Southern Observatories, (4) Universita' di Milano), G. Bertin (4) ((1) California Institute of Technology, M. Stiavelli (2), P. M{\\o}ller (3), S. Casertano (2), T. Treu (1)","submitted_at":"2001-11-27T16:19:59Z","abstract_excerpt":"We have measured the Fundamental Plane (FP) parameters for a sample of 30 field early-type galaxies (E/S0) in the redshift range 0.1<z<0.66. We find that: i) the FP is defined and tight out to the highest redshift bin; ii) the intercept \\gamma evolves as d\\gamma/dz=0.58+0.09-0.13 (for \\Omega=0.3, \\Omega_{\\Lambda}=0.7), or, in terms of average effective mass to light ratio, as d\\log(M/L_B)/dz=-0.72+0.11-0.16, i.e. faster than is observed for cluster E/S0 -0.49+-0.05. In addition, we detect [OII] emission >5\\AA in 22% of an enlarged sample of 42 massive E/S0 in the range 0.1<z<0.73, in contrast "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0111504","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"}