{"paper":{"title":"The Arecibo Legacy Fast ALFA Survey: The ALFALFA Extragalactic HI Source Catalog","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Aileen O'Donoghue, Brian R. Kent, Carlo Giovanardi, Crystal Moorman, David A. Kornreich, David Stark, David W. Craig, Derek Fertig, Elizabeth A. K. Adams, Emmanouil Papastergis, G. Lyle Hoffman, Gregory Hallenbeck, Jeffrey R. Miller, Jessica O'Connor, Kelley M. Hess, Li Xiao, Lukas Leisman, Martha P. Haynes, Michael G. Jones, Parker Troischt, Rebecca A. Koopmann, Riccardo Giovanelli, Rose Finn, Shan Huang, Thomas J. Balonek","submitted_at":"2018-05-29T14:28:46Z","abstract_excerpt":"We present the catalog of ~31500 extragalactic HI line sources detected by the completed ALFALFA survey out to z < 0.06 including both high signal-to-noise ratio (> 6.5) detections and ones of lower quality which coincide in both position and recessional velocity with galaxies of known redshift. We review the observing technique, data reduction pipeline, and catalog construction process, focusing on details of particular relevance to understanding the catalog's compiled parameters. We further describe and make available the digital HI line spectra associated with the catalogued sources. In add"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.11499","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"}