{"paper":{"title":"K2-66b and K2-106b: Two extremely hot sub-Neptune-size planets with high densities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Andrew W. Howard, Benjamin J. Fulton, Bjoern Benneke, Brad M. S. Hansen, Courtney D. Dressing, David R. Ciardi, Erica Gonzales, Erik A. Petigura, Evan Sinukoff, Heather A. Knutson, Howard Isaacson, Ian J. M. Crossfield, Jessie L. Christiansen, John H. Livingston, John M. Brewer, Joshua E. Schlieder, Justin R. Crepp, Lauren M. Weiss, Lea Hirsch, Leslie A. Rogers, Molly Kosiarek, Sebastien Lepine, Thomas P. Greene","submitted_at":"2017-05-09T19:03:51Z","abstract_excerpt":"We report precise mass and density measurements of two extremely hot sub-Neptune-size planets from the K2 mission using radial velocities, K2 photometry, and adaptive optics imaging. K2-66 harbors a close-in sub-Neptune-sized (2.49$^{+0.34}_{-0.24} R_\\oplus$) planet (K2-66b) with a mass of 21.3 $\\pm$ 3.6 $M_\\oplus$. Because the star is evolving up the sub-giant branch, K2-66b receives a high level of irradiation, roughly twice the main sequence value. K2-66b may reside within the so-called \"photoevaporation desert\", a domain of planet size and incident flux that is almost completely devoid of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.03491","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"}