{"paper":{"title":"Eridanus IV: an Ultra-Faint Dwarf Galaxy Candidate Discovered in the DECam Local Volume Exploration Survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. B. Pace, A. Drlica-Wagner, A. H. Riley, A. K. Vivas, A. Pieres, A. Smercina, A. Zenteno, B. Mutlu-Pakdil, C. E. Mart\\'inez-V\\'azquez, C. R. Bom, D. Erkal, D. Hernandez-Lang, D. J. James, D. J. Sand, D. L. Tucker, D. Mart\\'inez-Delgado, E. J. Tollerud, G. S. Stringfellow, J. D. Sakowska, J. D. Simon, J. L. Carlin, K. A. G. Olsen, L. Santana-Silva, M. Adam\\'ow, N. Kuropatkin, P. S. Ferguson, R. R. Munoz, S. E. Koposov, S. Mau, T. S. Li, W. Cerny, Y. Choi","submitted_at":"2021-07-19T18:00:05Z","abstract_excerpt":"We present the discovery of a candidate ultra-faint Milky Way satellite, Eridanus IV (DELVE J0505$-$0931), detected in photometric data from the DECam Local Volume Exploration survey (DELVE). Eridanus IV is a faint ($M_V = -4.7 \\pm 0.2$), extended ($r_{1/2} = 75^{+16}_{-13}$ pc), and elliptical ($\\epsilon = 0.54 \\pm 0.1$) system at a heliocentric distance of $76.7^{+4.0}_{-6.1}$ kpc, with a stellar population that is well-described by an old, metal-poor isochrone (age of $\\tau \\sim 13.0$ Gyr and metallicity of ${\\rm [Fe/H] \\lesssim -2.1}$ dex). These properties are consistent with the known po"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.09080","kind":"arxiv","version":2},"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/2107.09080/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"}