{"paper":{"title":"Asteroseismic modelling of the subgiant {\\mu} Herculis using SONG data: lifting the degeneracy between age and model input parameters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Dennis Stello, Hans Kjeldsen, J{\\o}rgen Christensen-Dalsgaard, Licai Deng, Tanda Li, Timothy R. Bedding","submitted_at":"2018-10-30T21:44:05Z","abstract_excerpt":"We model the oscillations of the SONG target $\\mu$ Herculis to estimate the parameters of the star. The $\\ell$ = 1 mixed modes of $\\mu$ Her provide strong constraints on stellar properties. The mass and age given by our asteroseismic modelling are 1.10$^{+0.11}_{-0.06}$ M$_{\\odot}$ and 7.55$^{+0.96}_{-0.79}$ Gyr. The initial helium abundance is also constrained at around $Y_{\\rm{init}}$ = 0.28, suggesting a ratio in the elements enrichment law ($\\Delta Y/\\Delta Z$) around 1.3, which is closed to the solar value. The mixing-length parameter converges to about 1.7, which is $\\sim$ 10\\% lower tha"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.13015","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"}