{"paper":{"title":"KOI-54: The Kepler Discovery of Tidally-Excited Pulsations and Brightenings in a Highly Eccentric Binary","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Andrej Prsa, Bill Wohler, Christopher Allen, Conny Aerts, David G. Koch, David W. Latham, Douglas A. Caldwell, D. W. Kurtz, Erik Brugamyer, Geoffrey W. Marcy, Howard Isaacson, Jerome A. Orosz, Jon M. Jenkins, Joyce Ann Guzik, Khadeejah A. Ibrahim, K. Kinemuchi, Lars A. Buchhave, Martin Still, Natalie M. Batalha, Rachel Street, Ronald L. Gilliland, Samuel N. Quinn, Steve B. Howell, Steve Bryson, Thomas N. Gautier III, Timothy M. Brown, William D. Cochran, William F. Welsh, William J. Borucki, Wolfgang Zima","submitted_at":"2011-02-08T21:06:59Z","abstract_excerpt":"Kepler observations of the star HD 187091 (KID 8112039, hereafter KOI-54) revealed a remarkable light curve exhibiting sharp periodic brightening events every 41.8 days with a superimposed set of oscillations forming a beating pattern in phase with the brightenings. Spectroscopic observations revealed that this is a binary star with a highly eccentric orbit, e=0.83. We are able to match the Kepler light curve and radial velocities with a nearly face-on (i=5.5 degree) binary star model in which the brightening events are caused by tidal distortion and irradiation of nearly identical A stars dur"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.1730","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":""},"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"}