{"paper":{"title":"The GALAH survey: Co-orbiting stars and chemical tagging","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Andrew R. Casey, Daniel B. Zucker, David M. Nataf, Gary Da Costa, Gayandhi M. De Silva, Geraint F. Lewis, Jane Lin, Janez Kos, Jeffrey D. Simpson, Jonathan Horner, Joss Bland-Hawthorn, Karin Lind, Katharine J. Schlesinger, Ken C. Freeman, Klemen \\v{C}otar, Ly Duong, Martin Asplund, Melissa K. Ness, Peter L. Cottrell, Prajwal R. Kafle, Sanjib Sharma, Sarah L. Martell, Sven Buder, Thomas Nordlander, Toma\\v{z} Zwitter, Valentina D'Orazi, Yuan-Sen Ting","submitted_at":"2018-04-16T18:55:31Z","abstract_excerpt":"We present a study using the second data release of the GALAH survey of stellar parameters and elemental abundances of 15 pairs of stars identified by Oh et al 2017. They identified these pairs as potentially co-moving pairs using proper motions and parallaxes from Gaia DR1. We find that 11 very wide (>1.7 pc) pairs of stars do in fact have similar Galactic orbits, while a further four claimed co-moving pairs are not truly co-orbiting. Eight of the 11 co-orbiting pairs have reliable stellar parameters and abundances, and we find that three of those are quite similar in their abundance patterns"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.05894","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"}