{"paper":{"title":"RR Lyrae stars in the newly discovered ultra-faint dwarf galaxy Centaurus I","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"A. B. Pace, A. Drlica-Wagner, A. H. Riley, A. K. Vivas, A. P. Ji, A. R. Walker, B. Mutlu-Pakdil, C. E. Mart\\'inez-V\\'azquez, D. J. Sand, D. L. Nidever, D. L. Tucker, D. Mart\\'inez-Delgado, G. S. Stringfellow (DELVE Collaboration), J. D. Sakowska, J. D. Simon, J. L. Carlin, M. Adam\\'ow, N. Kuropatkin, P. S. Ferguson, R. R. Mu\\~noz, S. Allam, S. Mau, T. S. Li, W. Cerny, Y. Choi","submitted_at":"2021-07-12T18:56:35Z","abstract_excerpt":"We report the detection of three RR Lyrae (RRL) stars (two RRc and one RRab) in the ultra-faint dwarf (UFD) galaxy Centaurus I (CenI) and two Milky Way (MW) $\\delta$ Scuti/SX Phoenicis stars based on multi-epoch $giz$ DECam observations. The two RRc stars are located within 2 times the half-light radius (r$_h$) of Cen I, while the RRab star (CenI-V3) is at $\\sim6$ r$_h$. The presence of three distant RRL stars clustered this tightly in space represents a 4.7$\\sigma$ excess relative to the smooth distribution of RRL in the Galactic halo. Using the newly detected RRL stars, we obtain a distance "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.05688","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/2107.05688/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"}