{"paper":{"title":"HD152843 b & c: the masses and orbital periods of a sub-Neptune and a super-puff Neptune","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. Collier Cameron, A. F. Mart\\'inez Fiorenzano, A. Gehdina, A. Harutyunyan, A. Mortier, A. Sozzetti, B. A. Nicholson, D. W. Latham, E. Molinari, J. Owen, J. Taylor, K. Rice, L. Affer, L. Di Fabrizio, L. Kaye, M. Cretignier, M. Damasso, M. Lopez-Morales, M. Pedani, M. Pinamonti, N. L. Eisner, O. Barrag\\'an, S. Aigrain, V. DiTomasso, V. Lorenzi, W. Boschin, X. Dumusque","submitted_at":"2023-10-23T16:16:51Z","abstract_excerpt":"We present the characterisation of the two transiting planets around HD 152843 (TOI 2319, TIC 349488688) using an intensive campaign of HARPS-N radial velocities, and two sectors of TESS data. These data reveal a unique and fascinating system: HD 152843 b and c have near equal masses of around 9 M$_\\oplus$ but differing radii of $3.05 \\pm 0.11$ R$_\\oplus$ and $5.94^{+0.18}_{-0.16}$ R$_\\oplus$ , respectively, and orbital periods of $11.62071^{+9.6e-05}_{-0.000106}$ days and $19.502104^{+7.4e-05}_{-8.5e-05}$ days. This indicates that HD 152843 c is in the lowest fifth percentile in density of th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2310.15068","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/2310.15068/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"}