{"paper":{"title":"Spatially resolved H$\\alpha$ emission in B14-65666: compact starbursts, ionizing efficiency and gas kinematics in an advanced merger at the Epoch of Reionization","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Alonso-Herrero, A. Bik, A. Crespo G\\'omez, A. Eckart, A. Labiano, C. Prieto-Jim\\'enez, D. Langeroodi, E. Iani, F. Pei{\\ss}ker, F. Walter, G. \\\"Ostlin, I. Jermann, J. \\'Alvarez-M\\'arquez, J. Hjorth, J. Melinder, J.P. Pye, K. I. Caputi, L. Boogaard, L. Colina, L. Costantin, M. Garc\\'ia-Mar\\'in, M. G\\\"udel, P.G. P\\'erez-Gonz\\'alez, P.Rinaldi, P. van der Werf, S. Gillman, T. Hashimoto, T. Henning, T. Moutard, T.V. Tikkanen, Y. Sugahara","submitted_at":"2025-07-09T12:28:51Z","abstract_excerpt":"We present MIRI/JWST medium resolution spectroscopy (MRS) and imaging (MIRIM) of B14-65666, a Lyman-break and interacting galaxy at redshift $z$=7.15. We detect the H$\\alpha$ line emission in this system, revealing a spatially-resolved structure of the H$\\alpha$ emitting gas, which consists of two distinct galaxies, E and W, at a projected distance of 0.4\". Galaxy E is very compact in the rest-frame UV, while W galaxy is more extended, showing a clumpy structure reminiscent of a tidal tail. The total H$\\alpha$ luminosity implies that the system is forming stars at a Star Formation Rate (SFR) o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.06793","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/2507.06793/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"}