{"paper":{"title":"The GAPS Programme at TNG XLII. A characterisation study of the multi-planet system around the 400 Myr-old star HD 63433 (TOI-1726)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"A. Bignamini, A. Fiorenzano, A. F. Lanza, A. Harutyunyan, A. Maggio, A. S. Bonomo, A. Sozzetti, A. W. Mann, D. Locci, D. Nardiello, E. Covino, E. Molinari, E. Poretti, F. Borsa, F. Marzari, G. Micela, G. Piotto, G. Scandariato, H. Stoev, I. Pagano, J. Maldonado, K. Biazzo, L. Borsato, L. Mancini, M. Baratella, M. Cecconi, M. Damasso, M. Mallonn, M. Molinaro, M. Pedani, M. Pinamonti, R. Capuzzo Dolcetta, R. Claudi, R. Cosentino, S. Benatti, S. Desidera, V. D'Orazi","submitted_at":"2023-03-27T14:26:46Z","abstract_excerpt":"For more than two years, we monitored with the HARPS-N spectrograph the 400 Myr-old star HD\\,63433, which hosts two close-in (orbital periods $P_b\\sim7.1$ and $P_c\\sim20.5$ days) sub-Neptunes detected by the TESS space telescope, and it was announced in 2020. Using radial velocities and additional TESS photometry, we aim to provide the first measurement of their masses, improve the measure of their size and orbital parameters, and study the evolution of the atmospheric mass-loss rate due to photoevaporation. We tested state-of-the-art analysis techniques and different models to mitigate the do"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.15242","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/2303.15242/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"}