{"paper":{"title":"The stellar orbit distribution in present-day galaxies inferred from the CALIFA survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Aaron A. Dutton, Andrea V. Maccio, Aura Obreja, Dandan Xu, Facundo A. G\\'omez, Glenn van de Ven, Hans-Walter Rix, Jakob C. Walcher, Jes\\'us Falc\\'on-Barroso, Ling Zhu, Marie Martig, Mariya Lyubenova, Remco van den Bosch, Robert J. J. Grand, Rub\\'en Garc\\'ia-Benito, Sebastian F. S\\'anchez, Shude Mao, Stefano Zibetti, Yunpeng Jin","submitted_at":"2017-11-17T21:13:09Z","abstract_excerpt":"Galaxy formation entails the hierarchical assembly of mass, along with the condensation of baryons and the ensuing, self-regulating star formation. The stars form a collisionless system whose orbit distribution retains dynamical memory that can constrain a galaxy's formation history. The ordered-rotation dominated orbits with near maximum circularity $\\lambda_z \\simeq1$ and the random-motion dominated orbits with low circularity $\\lambda_z \\simeq0$ are called kinematically cold and kinematically hot, respectively. The fraction of stars on `cold' orbits, compared to the fraction of stars on `ho"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.06728","kind":"arxiv","version":3},"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"}