{"paper":{"title":"TESS and HARPS-N unveil two planets transiting TOI-1453. A super-Earth and one of the lowest mass sub-Neptunes","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. F. Mart\\'inez Fiorenzano, A. Fukui, A. Leleu, A. Mortier, A. M. Silva, A. Sozzetti, A. Vanderburg, C. N. Watkins, C. Ziegler, D. Baker, D. R. Ciardi, D. W. Latham, E. B. Ting, E. Poretti, F. Murgas, G. Andreuzzi, J.A. Egger, J. Lillo-Box, J. M. Jenkins, J. N. Winn, K. A. Collins, L. A. Buchhave, L. Di Fabrizio, L. Malavolta, M. Cretignier, M. Damasso, M. L\\'opez-Morales, M. Pedani, M. Pinamonti, M. Stalport, N. Narita, P. Lewin, R. Haywood, R. P. Schwarz, S. B. Howell, S. N. Quinn, S. Seager, S. Udry, W. Boschin, X. Dumusque","submitted_at":"2025-03-10T16:57:09Z","abstract_excerpt":"We report on the validation and characterisation of two transiting planets around TOI-1453, a K-dwarf star in the TESS northern continuous viewing zone. In addition to the TESS data, we used ground-based photometric, spectroscopic, and high-resolution imaging follow-up observations to validate the two planets. We obtained 100 HARPS-N high-resolution spectra over two seasons and used them together with the TESS light curve to constrain the mass, radius, and orbit of each planet.\n  TOI-1453 b is a super-Earth with an orbital period of $P_b$=4.314 days, a radius of $R_b$=1.17$\\pm$0.06$R_{\\oplus}$"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.07529","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/2503.07529/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"}