{"paper":{"title":"Local Stellar Kinematics and Oort Constants from the LAMOST A-type Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"B.-Q. Chen, C. Wang, F. Wang, H.-F. Wang, H.-W. Zhang, Y. Huang","submitted_at":"2021-03-18T13:09:15Z","abstract_excerpt":"We estimate the solar peculiar velocities and Oort constants using a sample of 5,627 A-type stars with $d<0.6\\,\\rm kpc$ and $|z|<0.1\\,\\rm kpc$, selected from the LAMOST surveys. The radial and tangential velocities of these A-type stars are fitted by using a non-axisymmetric model. The best-fitting result yields the solar peculiar velocities $(U_\\odot,V_\\odot,W_\\odot)=(11.69\\pm0.68, 10.16\\pm0.51, 7.67\\pm0.10)\\,\\rm km\\,s^{-1}$ and Oort constants $A=16.31\\pm0.89\\,\\rm km\\,s^{-1}\\,kpc^{-1}$, $B=-11.99\\pm0.79\\,\\rm km\\,s^{-1}\\,kpc^{-1}$, $C=-3.10\\pm0.48\\,\\rm km\\,s^{-1}\\,kpc^{-1}$, $K=-1.25\\pm1.04\\,\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.10232","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2103.10232/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}