{"paper":{"title":"An X-ray and optical study of the cluster A33","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Antonelli, A. Wolter, C.R. Mullis, F. Fiore, F. Matteucci, I.M. Gioia, J. Kaastra, P. Mazzotta, R. Fusco-Femiano, R. Mewe, S. Colafrancesco (1), T. Maccacaro, V. Antonuccio-Delogu, Y. Rephaeli","submitted_at":"2000-02-10T12:32:17Z","abstract_excerpt":"We report the first detailed X-ray and optical observations of the medium-distant cluster A33 obtained with the Beppo-SAX satellite and with the UH 2.2m and Keck II telescopes at Mauna Kea. The information deduced from X-ray and optical imaging and spectroscopic data allowed us to identify the X-ray source 1SAXJ0027.2-1930 as the X-ray counterpart of the A33 cluster. The faint, $F_{2-10 keV} \\approx 2.4 \\times 10^{-13} \\ergscm2$, X-ray source 1SAXJ0027.2-1930, $\\sim 2$ arcmin away from the optical position of the cluster as given in the Abell catalogue, is identified with the central region of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0002224","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/astro-ph/0002224/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"}