{"paper":{"title":"Pushing ALMA to the limit: 140 pc resolution observations of a z=6.6 quasar-galaxy merger resolve strikingly different morphologies of dust continuum and [CII] 158 um emission","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Bram Venemans, Fabian Walter, Marcel Neeleman, Roberto Decarli, Romain A. Meyer","submitted_at":"2024-12-10T12:44:12Z","abstract_excerpt":"We present $0.\"026$ $(140\\ \\rm{pc})$ resolution ALMA observations of [C II] $158\\ \\mu\\rm{m}$ and dust continuum emission of the $z=6.6$ quasar J0305--3150, resolved over $\\sim 300-400$ independent resolution elements. The dust continuum emission is compact with $\\sim 80\\%$ recovered within $r<0.\"3$ $(1.6\\ \\rm{kpc})$, whereas the [C II] emission profile is composed of a central Gaussian ($r<0.\"4$, i.e. $<2.2\\ \\rm{kpc}$) and an extended component (detected up to $\\sim 10\\ \\rm{kpc}$ at $>3\\sigma$). We infer a direct contribution of the quasar to the observed 260\\ \\rm{GHz} continuum $S_{\\nu,\\rm{QS"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.07474","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/2412.07474/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"}