{"paper":{"title":"Mapping the Milky Way with LAMOST III: Complicated spatial structure in the outer disc","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Chao Liu, Hai-Feng Wang, Jun-Chen Wan, Licai Deng, Yan Xu","submitted_at":"2018-04-27T13:11:21Z","abstract_excerpt":"We present {complexity} of the Galactic outer disc {by fitting the stellar volume densities of the red giant branch stars with a two-disc component model}. {The discs are confirmed to} extend to $R\\sim19$\\,kpc. The radial density profile of the discs shows {two breaks at $R\\sim11$ and $\\sim14$\\,kpc, respectively, which} separate the radial profile into three segments with different scale lengths of $2.12\\pm0.26$, $1.18\\pm0.08$, and $2.72$\\,kpc at $R<11$, $11\\leq R\\leq14$, and $R>14$\\,kpc, respectively. The first {break} is likely due to the sudden drop in the radial profile of the thin disc, w"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.10485","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"}