{"paper":{"title":"Live Fast, Die $\\alpha$-Enhanced: The Mass-Metallicity-$\\alpha$ Relation of the Milky Way's Disrupted Dwarf Galaxies","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Ana Bonaca, Benjamin D. Johnson, Charlie Conroy, Dennis Zaritsky, Jiwon Jesse Han, Joshua S. Speagle, Nelson Caldwell, Phillip A. Cargile, Rohan P. Naidu, Turner Woody, Vedant Chandra, Yuan-Sen Ting","submitted_at":"2022-04-19T18:00:00Z","abstract_excerpt":"The Milky Way's satellite galaxies (\"surviving dwarfs\") have been studied for decades as unique probes of chemical evolution in the low-mass regime. Here we extend such studies to the \"disrupted dwarfs\", whose debris constitutes the stellar halo. We present abundances ([Fe/H], [$\\alpha$/Fe]) and stellar masses for nine disrupted dwarfs with $M_{\\star}\\approx10^{6}-10^{9}M_{\\odot}$ from the H3 Survey (Sagittarius, $Gaia$-Sausage-Enceladus, Helmi Streams, Sequoia, Wukong/LMS-1, Cetus, Thamnos, I'itoi, Orphan/Chenab). The surviving and disrupted dwarfs are chemically distinct: at fixed mass, the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.09057","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/2204.09057/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"}