{"paper":{"title":"An Analysis of Spitzer Phase Curves for WASP-121b and WASP-77Ab","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Brian Davenport, Eliza M.-R. Kempton, Emily Rauscher, E.M. May, Isaac Malsky, Jacob L. Bean, Kevin B. Stevenson, Megan Weiner Mansfield, Thomas Kennedy","submitted_at":"2025-03-16T14:34:49Z","abstract_excerpt":"We present analyses of Spitzer InfraRed Array Camera (IRAC) 3.6 $\\mu$m and 4.5 $\\mu$m phase curve observations of hot Jupiters WASP-77Ab and WASP-121b. For WASP-121b, we find amplitudes of 1771 $\\pm$ 95 ppm (3.6 $\\mu$m) and 2048 $\\pm$ 109 ppm (4.5 $\\mu$m), and near-zero offsets of -0.78 $\\pm$ 1.87$^{\\circ}$ (3.6 $\\mu$m) and 0.42 $\\pm$ 1.74$^{\\circ}$ (4.5 $\\mu$m), consistent within 2.2$\\sigma$ and 1.3$\\sigma$, respectively, with JWST NIRSpec results. For WASP-77Ab, we find amplitudes of 535 $\\pm$ 52 ppm (3.6 $\\mu$m) and 919 $\\pm$ 40 ppm (4.5 $\\mu$m), and offsets of 33.45 $\\pm$ 2.79$^{\\circ}$ (3"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.12521","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/2503.12521/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"}