{"paper":{"title":"Dark skies of the slightly eccentric WASP-18 b from its optical-to-infrared dayside emission","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. Bonfanti, A. Brandeker, A. C. M. Correia, A. Collier Cameron, A. Deline, A. Derekas, A. Erikson, A. E. Simon, A. Fortier, A. Heitzmann, A. Lecavelier des \\'Etangs, A. M. S. Smith, B. Edwards, B. Mer\\'in, B.-O. Demory, C. Broeg, Ch. Helling, C. Mordasini, C. M. Persson, D. Barrado Navascues, D. Ehrenreich, D. Gandolfi, D. Kitzmann, D. Magrin, D. Piazza, D. Pollacco, D. Queloz, D. S\\'egransan, E. Pall\\'e, E. Villaver, F. Ratti, G. Bruno, G. Olofsson, G. Peter, G. Piotto, G. Scandariato, Gy. M. Szab\\'o, H. Rauer, I. Pagano, I. Ribas, J. Hasiba, J. Korth, J. Laskar, J. Venturini, K. Gazeas, K. G. Isaak, K. Westerdorff, K. W. F. Lam, L. Borsato, L. Carone, L. Delrez, L. Fossati, L. Kreidberg, L. L. Kiss, M. B. Davies, M. Bergomi, M.-D. Busch, M. Deleuil, M. Farnir, M. Fridlund, M. Gillon, M. G\\\"udel, M. Lendl, M. N. G\\\"unther, M. Stalport, N. A. Walton, N. Billot, N. C. Santos, N. Iro, N. Rando, O. D. S. Demangeon, P. E. Cubillos, P. F. L. Maxted, R. Alonso, R. Ottensamer, R. Ragazzoni, S. C. C. Barros, S. G. Sousa, S. Sulis, S. Udry, Sz. Csizmadia, T. B\\'arczy, T. G. Wilson, V. Nascimbeni, V. Singh, V. Van Grootel, W. Baumjohann, W. Benz, Y. Alibert","submitted_at":"2025-05-02T19:11:31Z","abstract_excerpt":"We performed a joint analysis of phase-curve observations of the ultra-hot Jupiter WASP-18 b from the visible to the mid-infrared, using data from CHEOPS, TESS and Spitzer. We aim to characterise the planetary atmosphere with a consistent view over the large wavelength range covered using GCMs and retrieval analyses, and including JWST data. We obtained new ephemerides with unprecedented precisions of 1 second and 1.4 millisecond on the time of inferior conjunction and orbital period, respectively. We computed a planetary radius of $R_p = 1.1926 \\pm 0.0077 R_J$ with a precision of 0.65% (or 55"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.01544","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/2505.01544/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"}