{"paper":{"title":"Characterization of the K2-38 planetary system. Unraveling one of the densest planets known to date","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"A. Bianco, A. Cabral, A. Fragoso, A. Manescau, A. Mehner, A. Modigliani, A. Oliveira, A. Segovia, A. Sozzetti, A. Su\\'arez Mascare\\~no, A. Zanutta, B. Delabre, B. Lavie, B. Toledo-Padr\\'on, C. Allende Prieto, C. Broeg, C. Cumani, C. J. A. P. Martins, C. Lovis, C. Maire, D. Alves, D. Bossini, D. Ehrenreich, D. M\\'egevand, D. Sosnowska, E. Mueller, E. Pall\\'e, E. Poretti, E. Redaelli, F. A. Pepe, F. Bouchy, F. Tenegi, F. Zerbi, G. Avila, G. Calderone, G. Cupani, G. Lo Curto, G. Micela, G. Pariani, H. Dekker, H. M. Tabernero, I. Coretti, I. Hughes, J. Coelho, J. I. Gonz\\'alez Hern\\'andez, J. Knudstrup, J. Lillo-Box, J. L. Lizon, J. L. Rasilla, L. Genolet, L. Oggioni, L. Pasquini, M. Abreu, M. Affolter, M. Aliverti, M. Amate, M. A. Monteiro, M. Damasso, M. Genoni, M. J. P. F. G. Monteiro, M. Landoni, M. Moschetti, M. Oshagh, M. Riva, M. R. Zapatero Osorio, N. C. Santos, N. J. Nunes, O. Demangeon, O. Iwert, P. Conconi, P. Di Marcantonio, P. Figueira, P. Molaro, P. Santin, P. Santos, P. Span\\`o, R. Allart, R. Cirami, R. G\\'enova Santos, R. Rebolo, S. Benatti, S. C. C. Barros, S. Cristiani, S. Deiries, S. G. Sousa, S. Santana Tschudi, S. Udry, T. Bandy, V. Adibekyan, V. Baldini, V. D'Odorico, W. Benz, Y. Alibert","submitted_at":"2020-07-02T13:13:16Z","abstract_excerpt":"We characterized the transiting planetary system orbiting the G2V star K2-38 using the new-generation echelle spectrograph ESPRESSO. We carried out a photometric analysis of the available K2 photometric light curve of this star to measure the radius of its two known planets. Using 43 ESPRESSO high-precision radial velocity measurements taken over the course of 8 months along with the 14 previously published HIRES RV measurements, we modeled the orbits of the two planets through a MCMC analysis, significantly improving their mass measurements. Using ESPRESSO spectra, we derived the stellar para"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.01081","kind":"arxiv","version":5},"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/2007.01081/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"}