{"paper":{"title":"Discovery and Spectroscopic Confirmation of Aquarius III: A Low-Mass Milky Way Satellite Galaxy","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A.B. Pace, A. Chaturvedi, A. Chiti, A. Doliva-Dolinsky, A. Drlica-Wagner, A.H. Riley, A.K. Vivas, A.P. Ji, B. Mutlu-Pakdil, C.E. Mart\\'inez-V\\'azquez, C.R. Bom, C.Y. Tan, D.J. James, D.J. Sand, D.L. Nidever, D. Mart\\'inez-Delgado, E.F. Bell, E.J. Tollerud (DELVE Collaboration), G.E. Medina, G. Limberg, G.S. Stringfellow, I.U. Roederer, J.A. Carballo-Bello, J.D. Sakowska, J.D. Simon, J.L. Carlin, L. Santana-Silva, M. Adam\\'ow, M. Geha, M. Navabi, N.E.D. No\\\"el, N.F. Sherman, O.Y. Gnedin, P. Massana, P.S. Ferguson, S. Mau, T.S. Li, V.M. Placco, W. Cerny, Y. Choi","submitted_at":"2024-10-01T18:10:15Z","abstract_excerpt":"We present the discovery of Aquarius III, an ultra-faint Milky Way satellite galaxy identified in the second data release of the DECam Local Volume Exploration (DELVE) survey. Based on deeper follow-up imaging with DECam, we find that Aquarius III is a low-luminosity ($M_V = -2.5^{+0.3}_{-0.5}$; $L_V = 850^{+380}_{-260} \\ L_{\\odot}$), extended ($r_{1/2} = 41^{+9}_{-8}$ pc) stellar system located in the outer halo ($D_{\\odot} = 85 \\pm 4$ kpc). From medium-resolution Keck/DEIMOS spectroscopy, we identify 11 member stars and measure a mean heliocentric radial velocity of $v_{\\rm sys} = -13.1^{+1."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2410.00981","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/2410.00981/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"}