{"paper":{"title":"Radial velocity follow-up of GJ1132 with HARPS. A precise mass for planet 'b' and the discovery of a second planet","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. W\\\"unsche, C. Lovis, D. Charbonneau, E. Newton, F. Bouchy, F. Murgas, F. Pepe, J. Dittmann, J. Irwin, J.-M. Almenara, K. Menou, M. Mayor, N. Astudillo-Defru, N. C. Santos, R. Cloutier, R. Doyon, R. F. D\\'iaz, S. Udry, T. Forveille, X. Bonfils, X. Delfosse, Z. Berta-Thompson","submitted_at":"2018-06-11T09:21:33Z","abstract_excerpt":"GJ1132 is a nearby red dwarf known to host a transiting Earth-size planet. After its initial detection, we pursued an intense follow-up with the HARPS velocimeter. We now confirm the detection of GJ1132b with radial velocities only. We refined its orbital parameters and, in particular, its mass ($m_b = 1.66\\pm0.23 M_\\oplus$), density ($\\rho_b = 6.3\\pm1.3$ g.cm$^{-3}$) and eccentricity ($e_b < 0.22 $; 95\\%). We also detect at least one more planet in the system. GJ1132c is a super-Earth with period $P_c = 8.93\\pm0.01$ days and minimum mass $m_c \\sin i_c = 2.64\\pm0.44~M_\\oplus$. Receiving about "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.03870","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":""},"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"}