{"paper":{"title":"The Frontier Fields: Survey Design","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"A. Koekemoer, A. Zitrin, B. Hilbert, B. Porterfield, B. Robertson, B. Sunnquist, B. T. Soifer, D. Borncamp, D. Coe, D. C. Taylor, E. A. Barker, G. Brammer, H. Gunning, H. Jenkner, H. Khandrika, J. Anderson, J. Bullock, J. Mack, J. MacKenty, J. M. Lotz, J. Richard, J. Surace, J. Tumlinson, K. Flanagan, K. Sembach, L. J. Smith, L. J. Storrie-Lombardi, M. Dickinson, M. Durbin, M. Mountain, M. Robberto, N. Grogin, N. Reid, P. Capak, P. Natarajan, P. Royle, R. A. Lucas, R. Avila, R. Williams, S. Finkelstein, S. Ogaz, Z. Levay","submitted_at":"2016-05-21T01:15:44Z","abstract_excerpt":"The Frontier Fields are a director's discretionary time campaign with HST and the Spitzer Space Telescope to see deeper into the universe than ever before. The Frontier Fields combine the power of HST and Spitzer with the natural gravitational telescopes of massive high-magnification clusters of galaxies to produce the deepest observations of clusters and their lensed galaxies ever obtained. Six clusters - Abell 2744, MACSJ0416.1-2403, MACSJ0717.5+3745, MACSJ1149.5+2223, Abell S1063, and Abell 370 - were selected based on their lensing strength, sky darkness, Galactic extinction, parallel fiel"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.06567","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"}