{"paper":{"title":"ULTRACAM z'-band Detection of the Secondary Eclipse of WASP-12b","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"C. M. Copperwheat, D. F\\\"ohring, Nikku Madhusudhan, Richard W. Wilson, S. P. Littlefair, T. R. Marsh, V. S. Dhillon","submitted_at":"2013-08-01T20:00:05Z","abstract_excerpt":"We present z'-band secondary eclipse photometry of the highly irradiated hot Jupiter WASP-12b using ULTRACAM on the 4.2m William Herschel Telescope. We measure a decrease in flux of \\delta = 0.130+/-0.013% during the passage of the planet behind the star, which is significantly deeper than the previous measurement at this wavelength (0.082+/-0.015%, L\\'opez-Morales et al. 2010). Our secondary eclipse is best fit with a mid-eclipse phase, \\phi, that is compatible with a circular orbit \\phi = 0.501+/-0.002, in agreement with previous results (Croll et al. 2011). In combination with existing data"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.0337","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"}