{"paper":{"title":"Evidences on secular dynamical evolution of detached active binary orbits and contact binary formation","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"O. Demircan, S. Bilir, Y. Karatas, Z. Eker","submitted_at":"2006-07-04T16:34:40Z","abstract_excerpt":"Evidence of secular dynamical evolution for detached active binary orbits are presented. First order decreasing rates of orbital angular momentum (OAM), systemic mass ($M=M_{1}+M_{2}$) and orbital period of detached active binaries have been determined as $\\dot J/J = -3.48 \\times 10^{-10}$yr$^{-1}$, $\\dot M/M = -1.30 \\times 10^{-10}$yr$^{-1}$ and $\\dot P/P = -3.96\\times 10^{-10}$yr$^{-1}$ from the kinematical ages of 62 field detached systems. The ratio of $d \\log J/ d \\log M = 2.68$ implies that either there are mechanisms which amplify AM loss $\\delta=2.68$ times with respect to isotropic AM"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0607057","kind":"arxiv","version":3},"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/astro-ph/0607057/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"}