{"paper":{"title":"K2-111: an old system with two planets in near-resonance","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. Cabral, A. Collier Cameron, A. Fiorenzano, A. Ghedina, A. Harutyunyan, A. Manescau, A. Mehner, A. Mortier, A.S. Bonomo, A. Sozzetti, A. Su\\'arez Mascare\\~no, A. Vanderburg, B. Lavie, C. Allende Prieto, C.A. Watson, C.J.A.P. Martins, C. Lovis, D. Charbonneau, D. Ehrenreich, D. M\\'egevand, D. Phillips, D. Sasselov, D.W. Latham, E. Delgado Mena, E. Molinari, E. Palle, E. Poretti, F.A. Pepe, F. Bouchy, G. Lo Curto, G. Micela, G. Piotto, J. Haldemann, J.I. Gonz\\'alez Hern\\'andez, J. Lillo-Box, J. Maldonado, K. Rice, L. Affer, L. Buchhave, L. Malavolta, M. Lopez-Morales, M. Mayor, M. Oshagh, M. Pinamonti, M. Riva, M.R. Zapatero Osorio, N.C. Santos, N. J. Nunes, O. D. S. Demangeon, P. Di Marcantonio, P. Figueira, P. Molaro, R. Cosentino, R.D. Haywood, R.G. West, R. Rebolo, S. Benatti, S.C.C. Barros, S. Cristiani, S.G. Sousa, S. Udry, T. G. Wilson, V. Adibekyan, V. D'Odorico, W. Boschin, X. Dumusque, Y. Alibert","submitted_at":"2020-10-05T13:27:38Z","abstract_excerpt":"This paper reports on the detailed characterisation of the K2-111 planetary system with K2, WASP, and ASAS-SN photometry as well as high-resolution spectroscopic data from HARPS-N and ESPRESSO. The host, K2-111, is confirmed to be a mildly evolved ($\\log g=4.17$), iron-poor ([Fe/H]$=-0.46$), but alpha-enhanced ([$\\alpha$/Fe]$=0.27$), chromospherically quiet, very old thick disc G2 star. A global fit, performed by using PyORBIT shows that the transiting planet, K2-111b, orbits with a period $P_b=5.3518\\pm0.0004$ d, and has a planet radius of $1.82^{+0.11}_{-0.09}$ R$_\\oplus$ and a mass of $5.29"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.01993","kind":"arxiv","version":2},"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/2010.01993/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"}