{"paper":{"title":"Constraining the major merger history of $z \\sim 3-9$ galaxies using JADES: dominant in-situ star formation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Andrew J. Bunker, Benjamin D. Johnson, Brant Robertson, Charlotte Simmonds, Christina C. Williams, Christopher N. A. Willmer, Chris Willott, Daniel J. Eisenstein, D\\'avid Pusk\\'as, Francesco D'Eugenio, Gareth C. Jones, Hannah \\\"Ubler, Joris Witstok, Kevin Hainline, Marcia Rieke, Pierluigi Rinaldi, Qiao Duan, Roberto Maiolino, Sandro Tacchella, Santiago Arribas, Stacey Alberts, Stefano Carniani, St\\'ephane Charlot, William M. Baker, William McClymont, Zhiyuan Ji","submitted_at":"2025-02-03T19:00:00Z","abstract_excerpt":"We present a comprehensive analysis of galaxy close-pair fractions and major merger rates to evaluate the importance of mergers in the hierarchical growth of galaxies over cosmic time. This study focuses on the previously poorly understood redshift range of $z \\approx 3-9$ using JADES observations. Our mass-complete sample includes primary galaxies with stellar masses of ${\\rm log}(M_\\star/{\\rm M_\\odot}) = [8, 10]$, having major companions (mass ratio $\\geq 1/4$) selected by $5-30$ pkpc projected separation and redshift proximity criteria. Pair fractions are measured using a statistically robu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.01721","kind":"arxiv","version":2},"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/2502.01721/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"}