{"paper":{"title":"The blue straggler V106 in NGC6791: A prototype progenitor of old single giants masquerading as young","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Geller, A. Miglio, D. A. VandenBerg, D. Stello, E. L. Sandquist, F. Grundahl, G. A. Feiden, H. Bruntt, I. Platais, J. A. Orosz, J. Jessen-Hansen, K. Brogaard, M. Shetrone, N. Ryde, R. G. Izzard, R. Mathieu, S. Frandsen, S. M. Christiansen, S. Meibom, T. Arentoft, T. M. Tauris","submitted_at":"2018-09-03T19:56:25Z","abstract_excerpt":"We determine the properties of the binary star V106 in the old open cluster NGC6791. We identify the system to be a blue straggler cluster member by using a combination of ground-based and Kepler photometry and multi-epoch spectroscopy. The properties of the primary component are found to be $M_{\\rm p}\\sim1.67 \\rm M_{\\odot}$, more massive than the cluster turn-off, with $R_{\\rm p}\\sim1.91 \\rm R_{\\odot}$ and $T_{\\rm eff}=7110\\pm100$ K. The secondary component is highly oversized and overluminous for its low mass with $M_{\\rm s}\\sim0.182 \\rm M_{\\odot}$, $R_{\\rm s}\\sim0.864 \\rm R_{\\odot}$ and $T_"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.00705","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"}