{"paper":{"title":"The GAPS programme at TNG ?. TOI-1533: a compact system hosting a super-Neptune-mass pair with disparate radii","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. Bignamini, A. Fukui, A. Ghedina, A. Ruggieri, A. Savel, A. Shporer, C. D. Dressing, C. Guerra, D. Gandolfi, D. Nardiello, D. Polychroni, D. Watanabe, E. Palle, F. Amadori, F. Murgas, G. Mantovan, G. Piotto, G. Scandariato, G. Srdoc, H. Parviainen, J. de Leon, J. Higuera, J. J. Lissauer, J. Korth, K. A. Collins, Kawauchi, K. Biazzo, K. Ikuta, K. Stassun, L. Affer, L. Borsato, L. Malavolta, L. Mancini, L. Naponiello, M. Baratella, M. Damasso, M. D'Arpa, M. E. Everett, M. Mori, N. Narita, P. Leonardi, R. P. Schwarz, R. Zambelli, S. Colombo, S. Desidera, S. Giacalone, Stockdale, S.W. Yee, T. Azevedo Silva, T. Zingales, V. Lorenzi, V. Nascimbeni","submitted_at":"2026-06-29T18:22:15Z","abstract_excerpt":"The present-day architecture of planetary systems contains information about their formation and migration histories. The origin of hot Jupiters (HJs, P $\\lesssim$ 10 d, $R_{\\rm p} > 8 R_\\oplus$) has long been a matter of debate. While most of them are found to be ``lonely'', there is a rare population of HJs hosting small companions on inner orbits (eight known as of May 2026). Their peculiar architecture suggests a gentle disc-migration mechanism. In this study, we present the discovery and characterisation of the multi-planet system TOI-1533, comprising an inner sub-Neptune (TOI-1533 b, $P_"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.30799","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/2606.30799/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"}