{"paper":{"title":"The Geometry of Sagittarius Stream from Pan-STARRS1 3$\\pi$ RR Lyrae","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Branimir Sesar, David Martinez-Delgado, Eugene Magnier, Hans-Walter Rix, Kenneth C. Chambers, Klaus Hodapp, Nick Kaiser, Nicolas F. Martin, Nigel Metcalfe, Nina Hernitschek, Peter W. Draper, Richard Wainscoat, Rolf-Peter Kudritzki, Vasily Belokurov","submitted_at":"2017-10-25T19:49:58Z","abstract_excerpt":"We present a comprehensive and precise description of the Sagittarius (Sgr) stellar stream's 3D geometry as traced by its old stellar population. This analysis draws on the sample of ${\\sim}44,000$ RR Lyrae (RRab) stars from the Pan-STARRS1 (PS1) 3$\\pi$ survey (Hernitschek et al. 2016,Sesar et al. 2017b), which is ${\\sim}80\\%$ complete and ${\\sim}90\\%$ pure within 80~kpc, and extends to ${\\gtrsim} 120$~kpc with a distance precision of ${\\sim} 3\\%$. A projection of RR Lyrae stars within $|\\tilde{B}|_{\\odot}<9^\\circ$ of the Sgr stream's orbital plane reveals the morphology of both the leading an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.09436","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"}