{"paper":{"title":"CCD () photometry of the open cluster NGC 6793 and its dynamical evolution","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Charles Bonatto, Ey\\\"up Kaan \\\"Ulgen, \\.Inci Akkaya Oralhan, Orhan G\\\"une\\c{s}, Raul Michel Murillo, Y\\\"uksel Karata\\c{s}, Zahra Al","submitted_at":"2026-05-18T17:10:03Z","abstract_excerpt":"We present new astrophysical parameters for the open cluster NGC~6793 based on new CCD $UBV(RI)_{KC}$ photometry. We derived a reddening of $E(B-V) = 0.24 \\pm 0.02$~mag and a heavy element abundance of $Z = 0.024$ ($[Fe/H] = +0.20$~dex). Padova isochrone fitting to the $V \\times (B-V)$ colour-magnitude diagram yields an intermediate age of $525 \\pm 51$~Myr and a distance modulus of $\\mu = 8.80 \\pm 0.05$~mag, corresponding to a distance of $d = 575 \\pm 58$~pc from the Sun. The core radius of NGC~6793 appears to be shrinking due to advanced dynamical evolution ($\\log\\tau_{2} = 1.13$), driven by "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.18665","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/2605.18665/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"claim_evidence","ran_at":"2026-05-20T00:01:59.144756Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"7b2e1f6af3b52a02d16e730ef1c8a7dd7699303fd81382f6a130e710f023e562"},"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"}