{"paper":{"title":"On the kinematic signature of the Galactic warp as revealed by the LAMOST-TGAS data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Bingqiu Chen, Chun Wang, Haibo Yuan, Huawei Zhang, Maosheng Xiang, R. Sch\\\"onrich, Xiaowei Liu, Yang Huang, Zhijia Tian","submitted_at":"2018-07-09T02:51:01Z","abstract_excerpt":"Using a sample of about 123,000 stars with accurate 3D velocity measurements from the LAMOST-TGAS data, we confirm the kinematic signature of the Galactic warp found by Sch\\\"onrich & Dehnen recently. The data reveal a clear trend of increasing mean vertical velocity $\\overline{V_{z}}$ as a function of absolute vertical angular momentum $L_{z}$ and azimuthal velocity $V_{\\phi}$ for guiding center radius $R_{g}$ between 6.0 and 10.5 kpc. The trend is consistent with a large-scale Galactic warp. Similar to Sch\\\"onrich & Dehnen, we also find a wave-like pattern of $\\overline{V_{z}}$ versus $L_{z}$"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.02920","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"}