{"paper":{"title":"The GALAH Survey: Velocity fluctuations in the Milky Way using red clump giants","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Borja Anguiano, Daniel B. Zucker, David M. Nataf, Gayandhi De Silva, Geraint F. Lewis, Jane Lin, Janez Kos, Jeffrey D. Simpson, Jonathan Horner, Joss Bland-Hawthorn, Ly Duong, Martin Asplund, Michael Hayden, Prajwal R. Kafle, Robert A. Wittenmyer, Rosemary F.G. Wyse, Sanjib Sharma, Sarah Martell, Shourya Khanna, Sven Buder, Thomas Nordlander, Tomaz Zwitter, Yuan-Sen Ting","submitted_at":"2018-04-19T15:11:42Z","abstract_excerpt":"If the Galaxy is axisymmetric and in dynamical equilibrium, we expect negligible fluctuations in the residual line-of-sight velocity field. Recent results using the \\apg{} survey find significant fluctuations in velocity for stars in the midplane ($|z|<$0.25 kpc) out to 5 kpc, suggesting that the dynamical influence of non-axisymmetric features i.e., the Milky Way's bar, spiral arms and merger events extends out to the Solar neighborhood. Their measured power spectrum has a characteristic amplitude of 11 \\kms{} on a scale of 2.5 kpc. The existence of such large-scale streaming motions has impo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.07217","kind":"arxiv","version":2},"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"}