{"paper":{"title":"A Short Scale Length for the \\alpha-Enhanced Thick Disk of the Milky Way: Evidence from Low-Latitude SEGUE Data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Audrey Simmons, Benjamin A. Weaver, Constance M. Rockosi, Daniel Oravetz, Dmitry Bizyaev, Donald P. Schneider, Elena Malanushenko, Heather L. Morrison, Judy Y. Cheng, Kaike Pan, Katharine J. Schlesinger, Paul Harding, Timothy C. Beers, Viktor Malanushenko, Young Sun Lee","submitted_at":"2012-04-23T20:00:01Z","abstract_excerpt":"We examine the \\alpha-element abundance ratio, [\\alpha/Fe], of 5620 stars, observed by the Sloan Extension for Galactic Understanding and Exploration survey in the region 6 kpc < R < 16 kpc, 0.15 kpc < |Z| < 1.5 kpc, as a function of Galactocentric radius R and distance from the Galactic plane |Z|. Our results show that the high-\\alpha\\ thick disk population has a short scale length (L_thick ~ 1.8 kpc) compared to the low-\\alpha population, which is typically associated with the thin disk. We find that the fraction of high-\\alpha\\ stars in the inner disk increases at large |Z|, and that high-\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.5179","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"}