{"paper":{"title":"A spectroscopic map of the Galactic centre: Integrated light and dynamical modelling","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Triaxial orbit modelling of integrated-light kinematic maps recovers the mass of the Milky Way's central black hole.","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Feldmeier-Krause, G. van de Ven, I. Breda, P. Jethwa, S. Thater, T. I. Maindl","submitted_at":"2026-05-06T08:27:29Z","abstract_excerpt":"The centre of the Milky Way is occupied by a nuclear star cluster that contains the supermassive black hole Sgr A*. The cluster is embedded in the larger surrounding nuclear stellar disc. These three components dominate the mass budget of the Galactic centre at different radial scales. The mass distribution of the Galactic centre has been studied extensively using observations of individual bright stars and various dynamical modelling approaches. The situation differs for external galaxies, where observations are often limited to the integrated line-of-sight kinematics. For such systems, triax"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We recover the correct mass of Sgr A*, and our stellar mass distributions are in agreement with the literature, albeit with larger uncertainties.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The modelling assumes the gravitational potential is time-independent and that the observed kinematics can be reproduced by a steady-state orbit library in a triaxial potential whose parameters are adjusted to fit the data.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Triaxial dynamical modelling of the Galactic centre recovers the known mass of Sgr A* and shows the nuclear structures are mildly triaxial with radially varying orbit populations dominated by hot/warm orbits inside a few parsecs and cold orbits farther out.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Triaxial orbit modelling of integrated-light kinematic maps recovers the mass of the Milky Way's central black hole.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"aad647df204ae193fa47fb1d1434ae3a71ef9d07fb15e5c7147848fd36c96395"},"source":{"id":"2605.04633","kind":"arxiv","version":2},"verdict":{"id":"9239f35d-32ab-4028-bba7-92c8ea2ecf36","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-08T17:37:05.962097Z","strongest_claim":"We recover the correct mass of Sgr A*, and our stellar mass distributions are in agreement with the literature, albeit with larger uncertainties.","one_line_summary":"Triaxial dynamical modelling of the Galactic centre recovers the known mass of Sgr A* and shows the nuclear structures are mildly triaxial with radially varying orbit populations dominated by hot/warm orbits inside a few parsecs and cold orbits farther out.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The modelling assumes the gravitational potential is time-independent and that the observed kinematics can be reproduced by a steady-state orbit library in a triaxial potential whose parameters are adjusted to fit the data.","pith_extraction_headline":"Triaxial orbit modelling of integrated-light kinematic maps recovers the mass of the Milky Way's central black hole."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.04633/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"ai_meta_artifact","ran_at":"2026-05-20T11:36:30.490139Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_title_agreement","ran_at":"2026-05-19T22:31:19.941757Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T14:17:34.053353Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"c2d583cb772e9359562e448bdb888f413423b892bc0f8128f70e072130d7ff29"},"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"}