{"paper":{"title":"The Henize sample of S stars. I. The technetium dichotomy","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Jorissen (1) ((1) Universite Libre de Bruxelles, Belgium), S. Van Eck (1)","submitted_at":"1999-03-16T11:14:47Z","abstract_excerpt":"This paper is the first one in a series investigating the properties of the S stars belonging to the Henize sample (205 S stars with delta<-25 deg. and R<10.5) in order to derive the respective properties (like galactic distribution and relative frequencies) of intrinsic (i.e. genuine asymptotic giant branch) S stars and extrinsic (i.e. post mass-transfer binary) S stars. High-resolution (R=30 000 to 60 000) spectra covering the range 4230-4270AA have been obtained for 76 S stars, 8 M stars and 2 symbiotic stars. The 4262AA and 4238AA blends involving a Tc I line were analysed separately and y"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9903241","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"}