{"paper":{"title":"Reconciling extragalactic star formation efficiencies with theory: insights from PHANGS","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Adam K. Leroy, Annie Hughes, Antonio Usero, Arjen van der Wel, Damian R. Gleis, Dario Colombo, Dyas Utomo, Eric Emsellem, Eric J. Murphy, Erik Rosolowsky, Eva Schinnerer, Frank Bigiel, Jiayi Sun, Jindra Gensior, Jonathan D. Henshaw, Kathryn Grasha, Lukas Neumann, Miguel Querejeta, Oleg Y. Gnedin, Oscar Agertz, Ralf S. Klessen, Rowan J. Smith, Sharon E. Meidt, Simon C. O. Glover, Thomas G. Williams","submitted_at":"2025-05-26T11:11:12Z","abstract_excerpt":"New extragalactic measurements of the cloud population-averaged star formation (SF) efficiency per freefall time $\\rm\\epsilon_{\\rm ff}$ from PHANGS show little sign of theoretically predicted dependencies on cloud-scale virial level or velocity dispersion. We explore ways to bring theory into consistency with observations, highlighting systematic variations in internal density structure that must happen together with an increase in virial level typical towards galaxy centers. To introduce these variations into conventional turbulence-regulated SF models we adopt three adjustments motivated by "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.19832","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2505.19832/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}