{"paper":{"title":"The age of 47Tuc from self-consistent isochrone fits to colour-magnitude diagrams and the eclipsing member V69","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"A. P. Milone, A. Thygesen, D. A. VandenBerg, F. Grundahl, K. Brogaard, L. R. Bedin","submitted_at":"2017-02-11T12:43:12Z","abstract_excerpt":"Our aim is to derive a self-consistent age, distance and composition for the globular cluster $47\\,$Tucanae ($47\\,$Tuc; NGC104). First, we reevaluate the reddening towards the cluster resulting in a nominal $E(B-V)=0.03\\pm0.01$ as the best estimate. The $T_{\\rm eff}$ of the components of the eclipsing binary member V69 is found to be $5900\\pm72$ K from both photometric and spectroscopic evidence. This yields a true distance modulus $(m-M)_0=13.21\\pm0.06$(random)$ \\pm0.03 $(systematic) to $47\\,$Tuc when combined with existing measurements of V69 radii and luminosity ratio. We then present a new"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.03421","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":""},"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"}