{"paper":{"title":"The solar-like \"Second Spectrum\" and the polarised metal lines in emission of the post-AGB binary 89 Herculis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Ghedina, C. Scalia, F. Leone, M. Cecconi, M. Gangi, M. Giarrusso, M. Munari, R. Cosentino, S. Scuderi","submitted_at":"2018-04-23T06:32:31Z","abstract_excerpt":"We studied the polarised spectrum of the post-AGB binary system 89\\,Herculis on the basis of data collected with the high resolution \\emph{Catania Astrophysical Observatory Spectropolarimeter}, \\emph{HArps-North POlarimeter} and \\emph{Echelle SpectroPolarimetric Device for the Observation of Stars}. We find the existence of linear polarisation in the strongest metal lines in absorption and with low excitation potentials. Signals are characterized by complex Q and U morphologies varying with the orbital period. As possible origin of this \"Second Solar Spectrum\"-like behaviour, we rule out magne"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.08255","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"}